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Ko J, Rustia S, Alkharafi L, Ganguly R, Yen SLK, Oberoi S. Comparison of Alveolar Bone Grafting Outcomes using CBCT in Individuals with UCLP Based on the Presurgical Orthodontic Treatment Methods. Cleft Palate Craniofac J 2024; 61:791-800. [PMID: 36748327 PMCID: PMC10981178 DOI: 10.1177/10556656221143945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVE The purpose is to evaluate outcomes of alveolar bone grafting based on the pre-grafting orthodontic preparation methods. DESIGN Retrospective analysis of individuals with unilateral cleft lip and palate. SUBJECTS AND SETTINGS 28 individuals with non-syndromic UCLP from two craniofacial centers, 14 individuals each from XXXX and XXXX. INTERVENTIONS The alignment group underwent maxillary expansion with incisors alignment while the non-alignment group underwent only maxillary expansion for presurgical orthodontic preparation. METHODS Initial and post-surgical CBCT scans were compared to observe changes in angulation of the incisor adjacent to the cleft site, alveolar bony root coverage, and bone graft outcomes. RESULTS In the alignment group, the buccolingual rotation decreased by 32.35 degrees (p = .0002), the anteroposterior inclination increased by 14.01 degrees (p = .0004), and the mesiodistal angulation decreased by 17.88 degrees (p = .0001). Alveolar bony coverage did not change after bone graft in both groups, and no difference was observed between the groups. Chelsea scale showed satisfactory bone graft outcome (category A, C) in 12 cases (85.71%) in the alignment group and 11 cases (78.51%) in the non-alignment group. The volumetric measurement showed the alignment group had better bone fill of 69.85% versus 51.45% in the non-alignment group (p = .0495). CONCLUSIONS Alveolar bony coverage on the tooth adjacent to cleft sites did not change with alveolar bone grafting surgery in either of the alignment and non-alignment group. Presurgical orthodontic alignment does not induce root exposure nor poorer bone grafting outcome.
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Affiliation(s)
- Jaemin Ko
- Craniofacial and Special Care Orthodontics, Division of Dentistry, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - Samantha Rustia
- School of Dentistry, University of California, San Francisco, CA, USA
| | - Lateefa Alkharafi
- Program in Craniofacial Biology and Division of Craniofacial Anomalies, Department of Orofacial Sciences, University of California, San Francisco, CA, USA
| | - Rumpa Ganguly
- Oral and Maxillofacial Radiology, Department of Orofacial Sciences, University of California, San Francisco, CA, USA
| | - Stephen L-K Yen
- Craniofacial and Special Care Orthodontics, Division of Dentistry, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - Snehlata Oberoi
- Program in Craniofacial Biology and Division of Craniofacial Anomalies, Department of Orofacial Sciences, University of California, San Francisco, CA, USA
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Elshazly TM, Bourauel C, Aldesoki M, Salvatori D, Alhotan A, Keilig L, Ghoneima A. Effect of attachment configuration and trim line design on the force system of orthodontic aligners: A finite element study on the upper central incisor. Orthod Craniofac Res 2024. [PMID: 38459802 DOI: 10.1111/ocr.12779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2024] [Indexed: 03/10/2024]
Abstract
OBJECTIVES To use the finite element method (FEM) to investigate the effect of various attachment configurations and trimming line designs of orthodontic aligners on their biomechanical performance. METHOD A 3D upper jaw model was imported into 3D design software. The upper right central incisor tooth (Tooth 11) was made mobile, and its periodontal ligament (PDL) and bone structures were designed. Aligners were modelled with three distinct attachment configurations: No attachment, rectangular horizontal, rectangular vertical, and two trimming line designs; scalloped and straight extended, with a homogeneous thickness of 0.6 mm. These models were then imported into an FE software. Simulations were conducted for three different movements, including facial translation, distalization, and extrusion. RESULTS Forces were recorded at 1.3-2.6 N during facial translation, 1.4-5.9 N in distalization, and 0.0-2.0 N in extrusion. The straight extended trimming line consistently generated higher forces than the scalloped design. Attachments had no significant impact on force components during facial translation but were more effective in distalization and extrusion. The combination of a straight extended trimming line with horizontal attachments exhibited the least stresses at the apical third during distalization, and the highest stresses during extrusion, suggesting superior retention. CONCLUSIONS Rectangular attachments offer limited benefits in facial translation, but horizontal rectangular attachments can intensify load in distalization and are crucial for force generation in extrusion. Horizontal attachments are preferred over vertical options. Additionally, the straight extended trim line enhances control of tooth movement and can replace attachments in certain cases. CLINICAL RELEVANCE These findings provide biomechanical evidence and an optimal protocol to guide clinical practice in planning diverse teeth movements. The emphasis is on the influence of attachment utilization and the specific design of aligner trimming lines to enhance control over tooth movement.
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Affiliation(s)
- Tarek M Elshazly
- Oral Technology, Dental School, University Hospital Bonn, Bonn, Germany
- Department of Orthodontics and Pediatric Dentistry, Hamdan Bin Mohammed College of Dental Medicine (HBMCDM), Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai, United Arab Emirates
| | | | - Mostafa Aldesoki
- Oral Technology, Dental School, University Hospital Bonn, Bonn, Germany
| | | | - Abdulaziz Alhotan
- Department of Dental Health, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ludger Keilig
- Oral Technology, Dental School, University Hospital Bonn, Bonn, Germany
- Department of Dental Prosthetics, Propaedeutics and Materials Science, Dental School, University Hospital Bonn, Bonn, Germany
| | - Ahmed Ghoneima
- Department of Orthodontics and Pediatric Dentistry, Hamdan Bin Mohammed College of Dental Medicine (HBMCDM), Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai, United Arab Emirates
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AlMogbel AA, Alasmary S, Alfarraj S, Alenazi R, Albuti R. Orthodontics and Endodontics Clinical Practice Correlation: A Narrative Review. Cureus 2024; 16:e56821. [PMID: 38654793 PMCID: PMC11037287 DOI: 10.7759/cureus.56821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2024] [Indexed: 04/26/2024] Open
Abstract
Research on the connection between endodontic therapy and orthodontics is lacking. This overview of the literature synthesizes the findings from the fields of orthodontics and endodontics and explains how they are related. Beginning with the diagnosis, treating the patient at the appropriate time, moving endodontically treated teeth and traumatized teeth, resorbing roots by orthodontic mechanics, and managing traumatized teeth with orthodontic therapy. Multiple electronic databases were utilized including (PubMed, Scopus, Science Direct, and Web of Science) to perform manual literature searches. A total of 31 articles were reviewed and summarized in this paper in keywords like "Endodontically Treated Teeth and Orthodontic Treatment," "Endodontically Treated Tooth and Orthodontic Movement," "Orthodontic Treatment in RCT Teeth," "Root Canal Treatment with Orthodontic Movement," "Trauma with Orthodontic Movement," "Orthodontic and Endodontic." Orthodontic treatment of endodontically treated and traumatized teeth is a subject of controversy. The lack of research on the topic makes it a hard decision to make when to treat these teeth. Especially given that both orthodontic and endodontic treatments have multiple consequences on each other's outcomes. Thus, it is crucial for clinicians to understand how they integrate and have a guideline to refer to during decision-making. Successful orthodontic tooth movement could be carried out immediately after endodontic treatment. However, traumatized teeth need a follow-up period before initiating orthodontic movement, which ranges from three months to 12 months depending on the type of trauma and severity. Careful radiographic and clinical follow-up should be done during the healing period. Collaborative teamwork is important between orthodontists and endodontists for the success of treatment, and to achieve satisfactory outcomes.
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Affiliation(s)
- AbdulMajeed A AlMogbel
- Department of Orthodontics and Pediatric Dentistry, College of Dentistry, Qassim University, Buraydah, SAU
| | - Shatha Alasmary
- Department of Dentistry, King Saud Bin Abdulaziz University for Health Sciences, College of Dentistry, Riyadh, SAU
| | - Shaden Alfarraj
- Department of Dentistry, King Saud Bin Abdulaziz University for Health Sciences, College of Dentistry, Riyadh, SAU
| | - Raya Alenazi
- Department of Orthodontics and Pediatric Dentistry, College of Dentistry, Qassim University, Buraydah, SAU
| | - Rawan Albuti
- Department of Orthodontics and Pediatric Dentistry, College of Dentistry, Qassim University, Buraydah, SAU
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Alam MK, Alahmari B. Accelerated Orthodontic Treatment Using Photobiomodulation: A Randomized Clinical Trial. J Pharm Bioallied Sci 2024; 16:S543-S545. [PMID: 38595506 PMCID: PMC11000983 DOI: 10.4103/jpbs.jpbs_853_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 04/11/2024] Open
Abstract
Background Orthodontic treatment (OT) aims to align and correct teeth positions. However, conventional treatment methods often require a considerable amount of time. Photobiomodulation (PBM) has emerged as a potential solution to OT. Materials and Methods The study included 60 patients, divided equally into two groups: the PBM group and the control group. Patients in the PBM group received light therapy sessions applied directly to the OT area during each visit. Both groups underwent regular orthodontic adjustments. Treatment duration, changes in tooth alignment, and patient discomfort were evaluated. Statistical analysis was performed to compare the outcomes between the groups. Results The results of the study indicated that the PBM group experienced a statistically significant reduction in treatment duration compared to the control group. Moreover, there were noticeable improvements in tooth alignment in both groups. Patients in the PBM group reported minimal discomfort during the treatment process. These findings suggest that PBM has the potential to expedite OT without compromising its effectiveness. Conclusion In conclusion, this randomized clinical trial demonstrates that PBM can be an effective approach to accelerate OT. The technique led to a significant reduction in treatment duration and was well-tolerated by patients.
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Affiliation(s)
- Mohammad K. Alam
- Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
- Department of Dental Research Cell, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College and Hospitals, Chennai, Tamil Nadu, India
- Department of Public Health, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Balqees Alahmari
- Consultant, Department of Orthodontics, Dental Centre, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
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Naoumova J, Olofsson R, Almståhl A, Cevik-Aras H. Salivary levels of Osteoprotegerin and receptor activator of nuclear factor-kappa ligand during orthodontic tooth movement-A prospective pilot study. Orthod Craniofac Res 2024; 27:78-83. [PMID: 37381979 DOI: 10.1111/ocr.12687] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 05/03/2023] [Accepted: 06/15/2023] [Indexed: 06/30/2023]
Abstract
OBJECTIVES The aim of this study was to monitor changes in Osteoprotegerin (OPG) and receptor activator of nuclear factor-kappa ligand (RANKL) levels in the saliva during orthodontic tooth movement (OTM). MATERIALS AND METHODS Nine healthy females (15-20 y of age) with four pre-molar extractions and fixed appliance were included. In total, 134 stimulated and 134 unstimulated saliva samples were collected: at baseline and then every 6-8 weeks at follow-up appointments during the whole orthodontic treatment. Twelve age-matched females with no active orthodontic treatment served as a control group. Saliva samples were analysed by enzyme-linked immunosorbent assay (Elisa). The mean levels of OPG and RANKL were calculated according to the different orthodontic treatment stages: alignment, space closure and finishing. A mixed model analysis was used to compare the means of treatment stages. Baseline OPG levels were compared with the control group using an independent t-test. OPG levels were measured in stimulated saliva due to low levels in unstimulated saliva. RESULTS No significant difference was observed between baseline OPG values and the control group. OPG increased significantly at all treatment stages: alignment, space closure and finishing compared with baseline (P = 0.002, P = 0.039, P ≤ 0.001, respectively). The salivary levels of OPG increased gradually, except during space closure, reaching peak levels at finishing. RANKL was undetectable in stimulated and unstimulated saliva by sandwich Elisa during OTM. CONCLUSIONS This novel approach shows the changes in the levels of OPG in OTM and indicates how and when to sample saliva during orthodontic treatment to analyse bone remodelling.
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Affiliation(s)
- Julia Naoumova
- Department of Orthodontics, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
- Specialist Clinic for Orthodontics, Gothenburg, Public Dental Service, Region Västra Götaland, Sweden
| | - Richard Olofsson
- Specialist Clinic for Orofacial Medicine, Uddevalla Hospital, Public Dental Service, Region Västra Götaland, Sweden
| | - Annica Almståhl
- Department of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
- Section 4- Oral Health, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Hülya Cevik-Aras
- Department of Oral Pathology and Medicine, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
- Specialist Clinic for Orofacial Medicine, Norra Älvsborg County Hospital, Trollhättan, Public Dental Service, Region Västra Götaland, Sweden
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Mendes Ribeiro SM, Aragón MLSDC, Espinosa DDSG, Shibasaki WMM, Normando D. Orthodontic aligners: between passion and science. Dental Press J Orthod 2024; 28:e23spe6. [PMID: 38198351 PMCID: PMC10768648 DOI: 10.1590/2177-6709.28.6.e23spe6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/10/2023] [Indexed: 01/12/2024] Open
Abstract
INTRODUCTION The benefits and safety of using orthodontic aligners have been reported more by clinical experience and expert opinion than by scientific evidence. Another important aspect is that aligners are constantly evolving. It is important to obtain evidence that allows for new updates in manufacturing technology, in the development of new movement planning protocols, in the incorporation and design of attachments, and in the aid of skeletal anchorage. METHODS Evidence retrieved from six electronic databases (CINAHL, MEDLINE, EMBASE, Psych Info, the Cochrane Library and the Joanna Briggs Library) is presented by means of questions and answers. CONCLUSIONS There is evidence that the aligners presented different levels of difficulty in performing each type of movement, with rotational and vertical movements being the most difficult to perform. Regarding perception of pain due to tooth movement, it seems to have less impact at the beginning of treatment; but dealing with more phonoarticulatory changes seems to require more treatment time in more complex cases. Aligners do not prevent the occurrence of root resorption, although the incidence and severity of resorption may be reduced, making oral hygiene easier and accepting the risk of white spots, caries and periodontal disease. Given the conflicting evidence, the release of bisphenol-A from the aligner cannot be denied. Solutions must be found to reduce the environmental impact of aligners disposal. There is an urgent need for well-designed randomized controlled trials.
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Affiliation(s)
| | | | | | | | - David Normando
- Universidade Federal do Pará (UFPA), Departamento de Ortodontia (Belém/PA, Brazil)
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Ammar AM, Al-Sabbagh R, Hajeer MY. Evaluation of the effectiveness of the platelet-rich plasma compared to the injectable platelet-rich fibrin on the rate of maxillary canine retraction: a three-arm randomized controlled trial. Eur J Orthod 2024; 46:cjad056. [PMID: 37796117 DOI: 10.1093/ejo/cjad056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
BACKGROUND Blood-derived materials have been used recently to accelerate orthodontic tooth movement, but there are conflicting reports on their effectiveness. OBJECTIVE To evaluate the potential effect of local injection of platelet-rich plasma (PRP) and injectable platelet-rich fibrin (i-PRF) on the rate of orthodontic tooth movement. TRIAL DESIGN A single-center, three-arm, parallel-group randomized controlled trial. MATERIALS AND METHODS The sample consisted of 60 patients aged between 18 and 25 years (mean age: 21.1 ± 2.2 years) with Class II division 1 malocclusion requiring anterior retraction. Using a computer-generated list of random numbers, patients were assigned to three groups of canine retraction: (i) assisted with PRP injection (PRP group), (ii) assisted with i-PRF group, and (iii) conventional treatment with no injections (Cont. group). In the interventional groups, injections were done immediately and at 8 weeks after the onset of canine. Transpalatal arches (TPAs) were used to reinforce anchorage. The upper canines were distalized on 0.019 × 0.025-inch stainless archwires using coil springs with a force of 150 g. The primary outcome was the amount of canine retraction, whereas the secondary outcomes were canine rotation and anchoring loss. Assessment was done at five-time points: the beginning of tooth movement (T0) and at 4, 8, 12, and 16 weeks following T0 on three-dimensional superimposed digital models. RESULTS Sixty patients were randomized and included in this study (20 patients in each group), there were no dropouts. The rate of canine retraction was faster in the experimental groups. The PRP group showed a significantly slower movement in the second and fourth months than the i-PRF group while in the first and third months, there were nonsignificant differences between the two experimental groups. LIMITATIONS Blinding was not possible during the clinical stage of this trial. CONCLUSIONS PRP and i-PRF were found to be effective in accelerating orthodontic tooth movement during canine retraction. However, the effect of i-PRF was longer than that of PRP. TRIAL REGISTRATION ClinicalTrials.gov (ID: NCT05335824).
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Affiliation(s)
- Ali Mohsen Ammar
- Department of Orthodontics, Arab Private University for Science and Technology, Hama, Syria
| | - Rabab Al-Sabbagh
- Department of Orthodontics, University of Hama Dental School, Hama, Syria
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Arango-Piloneta EV, Plaza-Ruiz SP, Quiroga P, León-Lara DF. Simplifying two-vector mechanics calculations for challenging tooth movements. Comput Methods Biomech Biomed Engin 2024; 27:15-23. [PMID: 36625711 DOI: 10.1080/10255842.2023.2165392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/31/2022] [Indexed: 01/11/2023]
Abstract
The purpose of this article was to describe a simple graphical driven method for determining the necessary two-vector mechanics (TVM) as an alternative solution to the ideal or single force. In orthodontics, some tooth movements are difficult to achieve, mainly because of the impossibility of getting the point of application for the necessary force system. Given two points in biomechanically accessible areas, adding together two vectors applied to those points will result in an equivalent force system. The method was developed based on previous research, 3,880 hypothetical cases were analyzed to determine the trends between the resulting forces and their relative locations. A graphical driven TVM method (GTVM) for establishing the necessary TVM is presented in a manner that combine different procedures from the traditional method that simplify the analysis and may allow the user to perform more complex orthodontic cases making easier to compare systems of force equivalents.
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Affiliation(s)
- E V Arango-Piloneta
- Orthodontic Department, Fundación Universitaria CIEO-UniCIEO, Bogotá, Colombia
| | - S P Plaza-Ruiz
- Orthodontic Department, Fundación Universitaria CIEO-UniCIEO, Bogotá, Colombia
| | - P Quiroga
- Center for Studies in Structrures and Materials, Civil Engineering Department, Escuela Colombiana de Ingenieros Julio Garavito, Bogotá, Colombia
| | - D F León-Lara
- Escuela Colombiana de Ingenieros Julio Garavito, Bogotá, Colombia
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Alemran MA, Abbassy MA, Bakry AS, Alsaggaf DH, Abu Haimed TS, Zawawi KH. The effect of salbutamol sulphate inhalation (an anti-asthmatic medication) on the surfaces of orthodontic Archwires. Orthod Craniofac Res 2023. [PMID: 38153199 DOI: 10.1111/ocr.12749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 12/29/2023]
Abstract
OBJECTIVES This study aimed to compare the surface roughness and friction of different orthodontic archwires after exposure to salbutamol sulphate inhalation, an anti-asthmatic medication. METHODS Orthodontic archwires (stainless-steel [StSt], nickel-titanium [NiTi], beta-titanium [β-Ti], and copper-NiTi [Cu-NiTi]) were equally divided into two groups. The exposed groups were subjected to 20 mg salbutamol sulphate for 21 days and kept in artificial saliva. The control groups were only kept in artificial saliva. Surface changes were visualized using scanning electron microscopy (SEM). The average surface roughness (Ra) was evaluated using atomic force microscopy (AFM), and friction resistance forces were assessed using a universal testing machine. Statistical analyses were performed using t-tests and ANOVA followed by post hoc tests. RESULTS Salbutamol sulphate did not change the surface roughness of StSt and NiTi archwires (p > .05). However, the change in the surfaces of β-Ti and Cu-NiTi archwires was significant (p < .001). The frictional forces of exposed StSt, NiTi, and Cu-NiTi archwires did not change (p > .05). However, the frictional forces of β-Ti archwires increased significantly after exposure to salbutamol sulphate (p = .021). Brushing with fluoride after exposure to salbutamol sulphate increased the frictional forces of β-Ti only (p = .002). CONCLUSIONS Salbutamol sulphate inhalation significantly affected the surface texture of β-Ti and Cu-NiTi orthodontic archwires and increased the friction of β-Ti archwires. These deteriorating effects were not detected on the surface of StSt and NiTi archwires. Therefore, we suggest that β-Ti and copper titanium archwires should be used cautiously in individuals under salbutamol sulphate inhalation treatment.
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Affiliation(s)
- Majd A Alemran
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mona A Abbassy
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
- Dental Department, Alexandria University Hospital, Alexandria University, Alexandria, Egypt
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ahmed S Bakry
- Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
- Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Doaa H Alsaggaf
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tariq S Abu Haimed
- Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Khalid H Zawawi
- Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
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Mao B, Tian Y, Xiao Y, Liu J, Liu D, Zhou Y, Li J. Effect of Different Anchorage Reinforcement Methods on Long-Term Maxillary Whole Arch Distalization with Clear Aligner: A 4D Finite Element Study with Staging Simulation. Bioengineering (Basel) 2023; 11:3. [PMID: 38275571 PMCID: PMC10813679 DOI: 10.3390/bioengineering11010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/20/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
The objective of this study was to examine how various anchorage methods impact long-term maxillary whole arch distalization using clear aligners (CAs) through an automated staging simulation. Three different anchorage reinforcement methods, namely, Class II elastics, buccal temporary anchorage device (TAD), and palatal TAD, were designed. Orthodontic tooth movement induced by orthodontic forces was simulated using an iterative computation method. Additionally, the automatic adjustment of the CA was simulated through the application of the thermal expansion method. The results indicated that the palatal TAD group had the largest retraction of incisors, followed by the buccal TAD group and the Class II elastic group, while the least was in the control group. The largest distal displacements and efficiency of molar distalization for the first and the second molars were noticed in the palatal TAD group. Arch width increased at the molar and premolar levels in all groups. The FEM results suggested palatal TAD had the best performance considering anterior teeth anchorage maintenance, both sagittally and vertically. However, attention should be paid to the possible increasement of arch width.
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Affiliation(s)
- Bochun Mao
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Beijing 100081, China; (B.M.); (Y.X.); (J.L.); (D.L.); (Y.Z.)
| | - Yajing Tian
- Center of Stomatology, China–Japan Friendship Hospital, Beijing 100013, China;
| | - Yujia Xiao
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Beijing 100081, China; (B.M.); (Y.X.); (J.L.); (D.L.); (Y.Z.)
| | - Jiayi Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Beijing 100081, China; (B.M.); (Y.X.); (J.L.); (D.L.); (Y.Z.)
| | - Dawei Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Beijing 100081, China; (B.M.); (Y.X.); (J.L.); (D.L.); (Y.Z.)
| | - Yanheng Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Beijing 100081, China; (B.M.); (Y.X.); (J.L.); (D.L.); (Y.Z.)
| | - Jing Li
- Department of Orthodontics, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Beijing 100081, China; (B.M.); (Y.X.); (J.L.); (D.L.); (Y.Z.)
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Inchingolo AM, Inchingolo AD, Carpentiere V, Del Vecchio G, Ferrante L, Di Noia A, Palermo A, Di Venere D, Dipalma G, Inchingolo F. Predictability of Dental Distalization with Clear Aligners: A Systematic Review. Bioengineering (Basel) 2023; 10:1390. [PMID: 38135981 PMCID: PMC10740623 DOI: 10.3390/bioengineering10121390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/02/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
The current review aims to evaluate the scientific evidence relating to the effectiveness of treatment with clear aligners (CAs) in controlling distalization orthodontic tooth movement. "Orthodontics, aligners" and "distalization" were the search terms used on the Scopus, Web of Science and Pubmed databases with the Boolean operator "AND". The results of the last ten years of research were 146 studies; of these, 19 publications were included for this review. The distalization movement is possible with invisible masks alone, but the risk of losing anchorage in the anterior sectors is very probable. The stability of the results and the reduction of unwanted effects can be guaranteed by the use of skeletal anchoring devices and interproximal enamel reduction (IPR), with which compensations are obtained to reduce the initial overjet. Temporary anchorage devices (TADs) can be used to manage posterior anchorage after distalization of maxillary molars with aligners. This hybrid approach has demonstrated the greatest orthodontic success. TADs are useful aids to provide direct and indirect skeletal anchorage. The opposite effect must be considered when planning dental distalization, especially of the molars, in patients with large overjet, and corrective measures or the use of auxiliaries may be necessary to prevent midcourse corrections. This systematic review provides a critical evidence-based assessment of the predictability of dental distalization with CAs, an ever-evolving orthodontic technique.
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Affiliation(s)
- Angelo Michele Inchingolo
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
| | - Alessio Danilo Inchingolo
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
| | - Vincenzo Carpentiere
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
| | - Gaetano Del Vecchio
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
| | - Laura Ferrante
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
| | - Angela Di Noia
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
| | - Andrea Palermo
- College of Medicine and Dentistry, Birmingham B4 6BN, UK;
| | - Daniela Di Venere
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
| | - Gianna Dipalma
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro, 70124 Bari, Italy; (A.M.I.); (A.D.I.); (V.C.); (G.D.V.); (L.F.); (A.D.N.); (D.D.V.); (F.I.)
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Suchak D, Kamble R, Agarwal N, Shirbhate U, Talla R. Accelerated Orthodontics: Getting Ahead of Ourselves With Corticotomy. Cureus 2023; 15:e50858. [PMID: 38249225 PMCID: PMC10798877 DOI: 10.7759/cureus.50858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 12/20/2023] [Indexed: 01/23/2024] Open
Abstract
Corticotomy-assisted orthodontics is an emerging technique that combines orthodontic treatment with selective alveolar corticotomy to accelerate tooth movement and optimize treatment outcomes. This case report presents the successful application of corticotomy-assisted orthodontics in the management of a complex malocclusion. Following a comprehensive orthodontic assessment and treatment planning, corticotomy-assisted orthodontics was selected as the treatment approach. The surgical procedure involved selective alveolar corticotomy in the affected regions, followed by initiation of orthodontic mechanics. The case was closely monitored at regular intervals, and treatment progress was assessed using clinical examination and radiographs. The combined approach led to significantly accelerated tooth movement, a reduction in treatment time, and improved patient satisfaction. This case report underscores the potential benefits of corticotomy-assisted orthodontics in complex cases, providing clinicians with valuable insights into its successful application and the considerations involved in treatment planning and execution. Further research and long-term follow-up are warranted to elucidate the long-term stability and outcomes of this approach.
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Affiliation(s)
- Dhwani Suchak
- Orthodontics, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Ranjit Kamble
- Orthodontics, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Nishu Agarwal
- Orthodontics, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Unnati Shirbhate
- Periodontics, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Renuka Talla
- Orthodontics, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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Arqub SA, Nedjat-Haiem M, Einbinder M, Azami N, Kuo CL, Hariharan A, Uribe F. Characterizing orthodontic tooth movement in real time using dental monitoring scans: A pilot study. Orthod Craniofac Res 2023; 26 Suppl 1:82-91. [PMID: 37776068 DOI: 10.1111/ocr.12717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 09/07/2023] [Accepted: 09/17/2023] [Indexed: 10/01/2023]
Abstract
OBJECTIVES This pilot study aimed to quantify the magnitude and type of tooth movement occurring in short time intervals within the regular monthly orthodontic visits for patients with fixed appliances and undergoing maxillary canine retraction. Additionally, this pilot study aimed to provide a descriptive evaluation for the accuracy and reliability of the Dental Monitoring (DM)-captured scans to those of an iTero digital scans in an extraction space closure model. SETTINGS AND SAMPLE POPULATION 3D intraoral photographic scans (DM) for 12 patients with maxillary first premolar extractions in a single-centre academic institution. MATERIALS AND METHODS Twelve patients treated with fixed appliances and undergoing space closure for maxillary premolar extraction(s) were included. Nickel-titanium (200 g) closing coil springs were used for canine retraction. At initiation of space closure (T1), iTero scans were acquired, and patients were instructed to take DM scans every 4-5 days until their next visit in 4-5 weeks (T2). At T2, a final iTero scan in addition to a DM scan was taken. The number of patients who did the scans regularly as instructed declined as time elapsed. Stereolithography (STL) files generated from the DM scans were superimposed with the STL files from the iTero scans using GOM Inspect software to determine the accuracy of the DM 3D models. To assess rate, type and direction of tooth movement, each of the 3D image STL files generated from the DM scans, taken every 4-5 days by each patient, was superimposed on the previously captured scan. The rate of tooth movement for the maxillary molars and canines was calculated in the 3 planes of space (X, Y, Z) at each time point, until the end of the experiment. RESULTS Preliminary results indicated that the maxillary canines appeared to be displaced the greatest amount in the first 4-5 days with initial distolateral movement. As time elapsed, the rate of tooth movement decreased, and the tooth started moving distolingually. CONCLUSIONS Dental monitoring software provides a high-tech platform to monitor tooth movement in a 'real-time' approach. Accuracy of the photographic scans in relationship to the intraoral scans appears promising. There seems to be some evidence that the greatest amount of movement occurs initially in the first few days after activation, dropping thereafter to become a slower constant rate of tooth movement.
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Affiliation(s)
- Sarah Abu Arqub
- Department of Orthodontics, University of Florida, Gainesville, Florida, USA
| | - Michael Nedjat-Haiem
- Division of Orthodontics, School of Dental Medicine, University of Connecticut Health, Farmington, Connecticut, USA
| | - Max Einbinder
- School of Dental medicine, University of Connecticut Health, Farmington, Connecticut, USA
| | - Niloufar Azami
- Division of Orthodontics, School of Dental Medicine, University of Connecticut Health, Farmington, Connecticut, USA
| | - Chia-Ling Kuo
- Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health, Farmington, Connecticut, USA
| | - Amirtha Hariharan
- Division of Orthodontics, School of Dental Medicine, University of Connecticut Health, Farmington, Connecticut, USA
| | - Flavio Uribe
- Division of Orthodontics, School of Dental Medicine, University of Connecticut Health, Farmington, Connecticut, USA
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Rocha AS, Gonçalves M, Oliveira AC, Azevedo RMS, Pinho T. Efficiency and Predictability of Coronal Maxillary Expansion Repercussion with the Aligners System: A Retrospective Study. Dent J (Basel) 2023; 11:258. [PMID: 37999022 PMCID: PMC10670576 DOI: 10.3390/dj11110258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/29/2023] [Accepted: 10/31/2023] [Indexed: 11/25/2023] Open
Abstract
The Invisalign® system (SmartForce® G8) aims to guarantee aesthetics and provide good orthodontic treatment results. Dentoalveolar expansion is possible with clear aligners and can be used to correct dentoalveolar crossbite, resolve crowding or modify the arch shape. Despite the treatment's effectiveness, there is still disagreement among professionals concerning its true clinical potential. This study aimed to analyze the effectiveness and predictability of coronal tooth expansion movement in permanent dentition in patients who had completed the first phase of treatment with Invisalign® orthodontic aligners. MATERIALS AND METHODS The tooth movement tables of 75 previously selected cases were analyzed in terms of dental-arch width and expansion efficiency, through the Invisalign® platform, considering the pre-treatment (T0), planned treatment (TP) and post-treatment models (T1) using ClinCheck Pro® 6.0 software. All patients were treated by an orthodontic specialist and Invisalign® Diamond Provider in a private practice (T.P.). RESULTS Difference between T1 and T0: for each maxillary and mandibular measurement, there was a statistically significant difference between pre- and post-aligner treatment values. The greatest amount of expansion occurred in both the upper and the lower premolars. Difference between TP and T1: for each maxillary measurement, statistically significant differences were verified for the molar and canine. At the mandibular level, statistically significant differences were only verified in the first molar. CONCLUSIONS The Invisalign® clear aligners are effective for simultaneous intra-arch expansion in both jaws.
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Affiliation(s)
- Ana Sofia Rocha
- Oral Pathology and Rehabilitation Research Unit (UNIPRO)—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Science (IUCS), CESPU, 4585-116 Gandra, Portugal; (A.S.R.); (A.C.O.)
| | - Maria Gonçalves
- TOXRUN—Toxicology Research Unit, University Institute of Health Sciences (IUCS), CESPU, CRL, 4585-116 Gandra, Portugal; (M.G.)
| | - Ana Catarina Oliveira
- Oral Pathology and Rehabilitation Research Unit (UNIPRO)—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Science (IUCS), CESPU, 4585-116 Gandra, Portugal; (A.S.R.); (A.C.O.)
| | - Rui M. S. Azevedo
- TOXRUN—Toxicology Research Unit, University Institute of Health Sciences (IUCS), CESPU, CRL, 4585-116 Gandra, Portugal; (M.G.)
| | - Teresa Pinho
- Oral Pathology and Rehabilitation Research Unit (UNIPRO)—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Science (IUCS), CESPU, 4585-116 Gandra, Portugal; (A.S.R.); (A.C.O.)
- IBMC—Molecular and Cellular Biology Institute, i3S—Health Innovation and Research Institute, University of Porto, 4200-135 Porto, Portugal
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15
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Xu B, Yang K. Changes in alveolar bone structure during orthodontic tooth movement in adolescent and adult rats: A microcomputed tomography study. Orthod Craniofac Res 2023; 26:568-575. [PMID: 36866954 DOI: 10.1111/ocr.12646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/16/2023] [Accepted: 02/27/2023] [Indexed: 03/04/2023]
Abstract
BACKGROUND Increasing number of adults are willing to seek orthodontic treatment, but treatment duration for them is commonly longer. Although there have been studies on molecular biological changes during tooth movement, few have focused on microstructural changes in alveolar bone. OBJECTIVE This study aims to compare the microstructural changes in alveolar bone during orthodontic tooth movement in adolescent and adult rats. METHODS 25 6-week-old and 25 8-month-old male Sprague-Dawley (SD) rats were used to build orthodontic tooth-movement models. On Days 0, 1, 3, 7 and 14, the rats were sacrificed. Microcomputed tomography was used to evaluate tooth movement, alveolar crest height loss and microstructural parameters of alveolar bone (bone volume fraction, trabecular thickness, trabecular separation and trabecular number). RESULTS Tooth movement in the adult group was slower than in the adolescent group. Alveolar bone crest height in adults was lower than it was in adolescents on Day 0. Under orthodontic force, the alveolar crest in both groups decreased and the degree of decrease are higher at early stage in adolescents. The microstructural parameters indicated that the alveolar bone was originally denser in the adult rats. With orthodontic force, it tended to be looser. CONCLUSIONS Under orthodontic force, changes in alveolar bone differ between adolescent and adult rats. Tooth movements in adults are slower, and the decrease in alveolar bone density are more severe.
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Affiliation(s)
- Bowen Xu
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Kai Yang
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
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16
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Chen X, Shi Y, Yuan J, Li Y, Chen W. Factors influencing the efficacy of invisalign in molar distalization and tooth movement. Front Bioeng Biotechnol 2023; 11:1215169. [PMID: 37954021 PMCID: PMC10634526 DOI: 10.3389/fbioe.2023.1215169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 09/28/2023] [Indexed: 11/14/2023] Open
Abstract
Introduction: The work aims to establish and analyze the factors influencing the efficacy of Invisalign in molar distalization and tooth movement. Objectives of the study: 1) identify factors contributing to molar distalization and tooth movement; 2) analyze the effectiveness of Invisalign technology in molar distalization and tooth movement. Methods: The study was conducted in 2020-2022 in Baoding (PRC) based on Baoding's first central hospital. Forty patients (mean age 28.5 ± 1.5 years, 18-35 years; 20 women and 20 men) participated in the study. Results: All patients had mild to moderate degrees of tooth crowding, with an angle class II malocclusion, as well as maxillary third molars. Before and after the therapy, the condition of the alveolar bone, soft tissues, and facial height were measured. Fixation of the anterior teeth was performed. Calculations of the distal molar movement were performed. For orthodontic procedures, the second M of the upper jaw were moved, and then the first molars were moved. Discussion: Distalization of the upper molars was found to be an effective movement, with an efficiency of about 83% when vertical rectangular attachments were used. The first molar was moved distally by 2.85 mm without significant tilt or movement in the vertical plane.
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Affiliation(s)
- Xiaowen Chen
- Department of Stomatology, Baoding First Central Hospital, Baoding, China
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Abstract
The advantages of Clear Aligners Therapy (CAT) include the braces being virtually invisible, comfortable to wear, and removable for eating and brushing; that way, CAT can be used to treat a wide range of orthodontic issues. In 1999, the company Align Technology introduced the frst commercial clear aligner system called Invisalign. The Invisalign system was initially only available to orthodontists, but later became available to general dentists as well. The system quickly gained popularity among patients who were looking for a more discreet and comfortable alternative to traditional braces. In 2000, Align Technology received FDA clearance for the Invisalign system, which further increased its popularity. The biomechanics of clear aligners involve the use of custom-made tooth aligners that are specifcally shaped to guide teeth into desired positions. These aligners are typically made from flexible materials such as polyurethane or ethylene vinyl acetate and are adjusted to apply the necessary forces for tooth movement. Attachment devices, such as power ridges or buttons, are often used to enhance or assist in specifc tooth movements and for retention of the aligner. The use of attachments allows for the exertion of desired force on the teeth, which is crucial for the success of Clear Aligner Therapy. CAT should be used if patients are concerned about the esthetic appearances of their teeth-for example, actors and other individuals that rely on their appearances in public in a professional context-and if the misalignment is not severe, so that clear aligners can still work. One should not use CAT in cases of severe crowding or spacing issues that require extractions. If the patient has complex jaw discrepancies or skeletal issues or if teeth need to be moved extensively in multiple directions, CAT is likely not going to be strong enough. In conclusion, Clear Aligner Therapy is a safe, effective, and convenient orthodontic treatment option that offers patients a virtually invisible way to achieve a straighter, more beautiful smile. With continued advancements in technology and a growing body of research supporting its effectiveness, the future of Clear Aligner Therapy looks bright.
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Affiliation(s)
- AbdulMajeed AlMogbel
- Department of Orthodontics and Pediatric Dentistry, College of Dentistry, Qassim University, Buraydah 52571, Saudi Arabia
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Oliveira AC, Rocha AS, Leitão R, Maia M, Pinho T. Coronal Repercussions of the Maxillary Central Incisor Torque in the First Set of Aligners: A Retrospective Study. Dent J (Basel) 2023; 11:186. [PMID: 37623282 PMCID: PMC10453348 DOI: 10.3390/dj11080186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/17/2023] [Accepted: 07/31/2023] [Indexed: 08/26/2023] Open
Abstract
Coronal torque is one of the key factors in orthodontic treatment. An adequate torque value has an impact on aesthetics and soft tissue profile. The aim of this quantitative, comparative and observational longitudinal cohort study was to analyze the efficacy of the maxillary central incisor coronal torque in the Invisalign® system and evaluate the relation between coronal torque movement and patient's facial biotype. In total, 27 patients were selected. The planned movements (TP) were obtained from the Invisalign Doctor Site® using mathematical formulas that consider the T0 measurements. Pre-treatment (T0) and after full use of the first set of aligners (T1) scanners were evaluated using Geomagic® Control X TM by superimposing T0 and T1 models using a transverse plane and the long axis of the tooth crown. IBM® SPSS® software was used for statistical purposes. We found statistically significant differences between T0 and T1 in pro-inclination and retro-inclination, as well as between achieved and planned values in pro-inclination (p = 0.011). We verified that hyperdivergent clinical cases presented higher mean values of coronal torque, and hypodivergent cases presented lower values. In pro-inclination, the differences between the planned and achieved values were greater in hypodivergent cases and smaller in hyperdivergent cases. In retro-inclination, the differences between the planned and achieved values were greater in normodivergent cases and smaller in hypodivergent cases. This study highlights that inefficacy is more accentuated in pro-inclination. Aligners are an effective tool for producing coronal repercussions of torque movement, being more effective in retro-inclination.
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Affiliation(s)
- Ana Catarina Oliveira
- UNIPRO—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Science (IUCS), CESPU, 4585-116 Gandra, Portugal; (A.C.O.); (A.S.R.); (R.L.)
| | - Ana Sofia Rocha
- UNIPRO—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Science (IUCS), CESPU, 4585-116 Gandra, Portugal; (A.C.O.); (A.S.R.); (R.L.)
| | - Rita Leitão
- UNIPRO—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Science (IUCS), CESPU, 4585-116 Gandra, Portugal; (A.C.O.); (A.S.R.); (R.L.)
| | - Manuela Maia
- IPMAIA—Instituto Politécnico da Maia, Avenida Carlos de Oliveira Campos, Castêlo da Maia, 4475-690 Maia, Portugal;
| | - Teresa Pinho
- UNIPRO—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Science (IUCS), CESPU, 4585-116 Gandra, Portugal; (A.C.O.); (A.S.R.); (R.L.)
- IBMC—Molecular and Cellular Biology Institute, i3S—Health Innovation and Research Institute, University of Porto, 4200-135 Porto, Portugal
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Subramanian M, Selvaraj KK, Jagannathan R, Rajendran S, Rajendran D, Madapusi BT. Potential Uses of Adhatoda Vasica in Orthodontics. J Pharm Bioallied Sci 2023; 15:S40-S45. [PMID: 37654366 PMCID: PMC10466604 DOI: 10.4103/jpbs.jpbs_74_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 09/02/2023] Open
Abstract
Plaque control, pain control, and modulation of inflammatory mediators to accelerate or stabilize tooth movements are hot issues in orthodontics. The recent advent of phytochemicals as biological mediators has opened new vistas in the aforementioned areas of orthodontics. Adhatoda vasica has caught the attention of investigators due to multiple properties related to orthodontics. This study addresses the potential areas of use of A. vasica in orthodontics, which provide ideas for further investigations. A. vasica possesses antibacterial activity, antifungal activity, anti-oxidant effect, anti-inflammatory activity, analgesic effect, osteogenic, and osteoclastic activities. A. vasica has huge potential in orthodontics, whereas all these vistas need careful and methodical testing before use in clinical orthodontics. In the future, investigators can focus on these aspects of the use of A. vasica to develop products.
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Affiliation(s)
- Murukesan Subramanian
- Department of Orthodontics, Sree Balaji Dental College and Hospital, Chennai, Tamil Nadu, India
| | - Kishore Kumar Selvaraj
- Department of Orthodontics, Sree Balaji Dental College and Hospital, Chennai, Tamil Nadu, India
| | - Raghunathan Jagannathan
- Department of Periodontology, Tagore Dental College and Hospital, Chennai, Tamil Nadu, India
| | | | - Deepika Rajendran
- Consultant Endodontist, Craniofacial Clinic (P) Ltd, Chennai, Tamil Nadu, India
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Gonçalves A, Collard A, Monteiro F, Matos D, Carvalho Ó, Azevedo R, Silva FS, Pinho T. Accuracy of Invisalign ® on Upper Incisors: A Systematic Review. Turk J Orthod 2023; 36:126-133. [PMID: 37346374 PMCID: PMC10318852 DOI: 10.4274/turkjorthod.2022.2021.0254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 06/04/2022] [Indexed: 02/22/2023]
Abstract
The current systematic review appraises the effectiveness of the types of tooth movements performed with Invisalign® clear aligner on the maxillary incisors. An electronic literature search of published trials was performed through PubMed, LILACS, Scopus, Cochrane Library, and Web of Science databases, and selected journals, from 2009 to 2020. Out of 291 references, five relevant publications were identified for analysis: four studies were performed retrospectively and one prospectively, all non-randomized. Despite the limited set of selected articles, the sample size is significant, with 148 subjects included in the reviewed studies involving the orthodontic treatment of upper incisors. We concluded that movements with the Invisalign® clear aligner on the upper incisors present distinct accuracy, possibly related with movement complexity; intrusion of the incisors has low accuracy (in some cases, 0% of accuracy was reported when the tooth extruded), while incisor extrusion exhibit some of the highest accuracy values reported in the included studies (45%-142%, when the achieved movement was greater than the predicted). Besides, axial (i.e., torque and tip) and horizontal (i.e., translation and rotation) movements are usually effective, with accuracy values between 39%-156% and 42%-79%, respectively. Overall, we determined that the efficiency of aligner to reach the desired movements in the upper incisors was low, as often refinements were required in the included studies. The use of aligner features must be more often considered to improve movement accuracy.
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Affiliation(s)
- Aline Gonçalves
- UNIPRO - Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), CESPU, Gandra, Portugal
- Center for Microelectromechanical Systems (CMEMS), University of Minho, Campus Azurém, Guimarães, Portugal
| | - Athénaïs Collard
- UNIPRO - Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), CESPU, Gandra, Portugal
| | - Francisca Monteiro
- Center for Microelectromechanical Systems (CMEMS), University of Minho, Campus Azurém, Guimarães, Portugal
- Life and Health Sciences Research Institute (ICVS), Medical School, University of Minho, Campus Gualtar, Braga, Portugal
- LABBELS - Associate Laboratory, Braga, Guimarães, Portugal
| | - David Matos
- UNIPRO - Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), CESPU, Gandra, Portugal
| | - Óscar Carvalho
- Center for Microelectromechanical Systems (CMEMS), University of Minho, Campus Azurém, Guimarães, Portugal
- LABBELS - Associate Laboratory, Braga, Guimarães, Portugal
| | - Rui Azevedo
- TOXRUN, Toxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, Gandra, Portugal
| | - Filipe S. Silva
- Center for Microelectromechanical Systems (CMEMS), University of Minho, Campus Azurém, Guimarães, Portugal
- LABBELS - Associate Laboratory, Braga, Guimarães, Portugal
| | - Teresa Pinho
- UNIPRO - Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), CESPU, Gandra, Portugal
- IBMC - Instituto Biologia Molecular e Celular, i3S - Inst. Inovação e Investigação em Saúde, Universidade do Porto, Porto, Portugal
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Hakami Z, Marghalani HY, Hedad I, Khawaji M, Abutaleb G, Hakami A, Almoammar S, Alshehri A. Comparison of Tooth Color and Enamel and Dentinal Thickness between Orthodontically Treated and Untreated Individuals. Diagnostics (Basel) 2023; 13:2066. [PMID: 37370961 DOI: 10.3390/diagnostics13122066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/08/2023] [Accepted: 06/10/2023] [Indexed: 06/29/2023] Open
Abstract
This study compared tooth color and enamel and dentinal thickness between orthodontically treated and untreated individuals. (1) Methods: A matched case-control study was conducted. The sample included 26 patients who had received orthodontic treatment and 31 matched controls. The color assessment was performed subjectively using the VITA 3D-Master (VM) shade guide and objectively using the VITA Easyshade (VE) spectrophotometer. Differences in L*, a*, and b* (lightness, red/green, and blue/yellow) were calculated. The color change was evaluated using ΔE*ab and the whiteness index (WID). Tooth structure thickness (labiolingual, labial enamel, and labial dentin) was evaluated using cone-beam computerized tomography. The correlations between overall tooth color and tooth structure thickness were evaluated. (2) Results: A total of 228 teeth were evaluated. Color assessment using VM showed significant differences between orthodontically treated and untreated teeth (p < 0.001), while VE revealed no significant differences. Both groups showed no difference in tooth enamel and dentinal thickness. Significant differences in tooth color (p < 0.05) were observed between genders. Both VM and VE showed weak to moderate correlations with tooth color and enamel and dentinal thickness (p < 0.05). (3) Conclusions: Orthodontic treatment may demonstrate visually perceptible but acceptable and clinically undetectable tooth color alteration.
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Affiliation(s)
- Zaki Hakami
- Division of Orthodontics, Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia
| | - Hussain Ya Marghalani
- Orthodontic Department, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Ismaeel Hedad
- Jazan Dental Specialists Center, Ministry of Health, Jazan 82943, Saudi Arabia
| | - Mazen Khawaji
- Prince Fahd Bin Sultan Primary Care, Ministry of Health, Tabuk 47311, Saudi Arabia
| | - Ghadah Abutaleb
- Samtah General Hospital, Ministry of Health, Jazan 23437, Saudi Arabia
| | - Amjad Hakami
- Private Dental Center, Jazan 84521, Saudi Arabia
| | - Salem Almoammar
- Department of Orthodontics and Pediatric Dentistry, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia
| | - Abdulrahman Alshehri
- Division of Orthodontics, Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia
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Alkadhimi A, Ahmed F. Clear Aligner Orthodontics: What is the Evidence for their Efficacy? Prim Dent J 2023; 12:69-75. [PMID: 37313874 DOI: 10.1177/20501684231174122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Orthodontic treatment with the Invisalign® appliance (and other clear aligners) may be more aesthetically appealing to most adult patients when compared with conventional fixed appliances. When the first clear aligner systems were introduced into the market some 20 years ago, they were very basic in their mode of force delivery. In the last ten years, the Invisalign® system has undergone some remarkable changes and refinements in order to deliver more predictable treatment outcomes and allow for the treatment of more complex malocclusions. However, there remains an issue in terms of differences between the predicted and achieved tooth movements. Some tooth movements are more difficult to achieve than others. This article aims to examine the evidence of effectiveness and predictability of Invisalign® appliances for the correction of different tooth movements.
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Affiliation(s)
- Aslam Alkadhimi
- Aslam Alkadhimi BDentSc.(Hons.), FDS (Orth) RCS(Eng), MOrth RCS(Eng), MClinDent(UCL), MFD RCS(Ire), MFDS RCS(Eng) Consultant Orthodontist, Health Service Executive, Dublin, Ireland
- Farooq Ahmed BDS, MSC, MDPH, MFDS, MORTH, FDSRCS (Orth), AFHEA Consultant Orthodontist, Department of Orthodontics, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Farooq Ahmed
- Aslam Alkadhimi BDentSc.(Hons.), FDS (Orth) RCS(Eng), MOrth RCS(Eng), MClinDent(UCL), MFD RCS(Ire), MFDS RCS(Eng) Consultant Orthodontist, Health Service Executive, Dublin, Ireland
- Farooq Ahmed BDS, MSC, MDPH, MFDS, MORTH, FDSRCS (Orth), AFHEA Consultant Orthodontist, Department of Orthodontics, Guy's and St Thomas' NHS Foundation Trust, London, UK
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23
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Zong C, Van Holm W, Bronckaers A, Zhao Z, Čokić S, Akta MK, Castro AB, Van Meerbeek B, Braem A, Willems G, de Llano-Pérula MC. Biomimetic Periodontal Ligament Transplantation Activated by Gold Nanoparticles Protects Alveolar Bone. Adv Healthc Mater 2023:e2300328. [PMID: 37114680 DOI: 10.1002/adhm.202300328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/29/2023] [Indexed: 04/29/2023]
Abstract
Stem cell therapy might be a promising method to stimulate alveolar bone regeneration, which is currently a major clinical challenge. However, its therapeutic features largely depend on pretreatment and transplantation preparation. Herein, a novel biomimetic periodontal ligament transplantation composed of human periodontal ligament stem cells (hPDLSCs) pretreated with gold nanocomplexes (AuNCs) and embedded in a type-I collagen hydrogel scaffold is developed to protect alveolar bone from resorption. AuNCs were readily absorbed by primary hPDLSCs, with limited cytotoxicity, and promoted osteogenic differentiation of hPDLSCs effectively in vitro. In addition, the AuNCs-induced hPDLSCs were encapsulated with type-I collagen hydrogel scaffold to mimic their native physiological niche, and then transplanted into a rat model of alveolar bone resorption. Both micro-computed tomography (micro-CT) and immunohistochemical assays demonstrated that alveolar bone loss was significantly prevented. Furthermore, the underlying therapeutic mechanism was elucidated, in which transplantation-activated osteogenesis was associated with autophagy, which enabled bone remodeling and regeneration. This study provides critical insight into the role of PDLSCs in bone homeostasis and proposes an innovative AuNCs-based strategy for stem cell therapy in bone regeneration. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Chen Zong
- KU Leuven (University of Leuven), Department of Oral Health Sciences, Orthodontics and UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
| | - Wannes Van Holm
- KU Leuven, Department of Oral Health Sciences, Periodontology & Oral Microbiology and UZ Leuven, Dentistry, Leuven, Belgium
| | - Annelies Bronckaers
- University of Hasselt, Faculty of Life Sciences, Biomedical Research Institute, Diepenbeek, Belgium
| | - Zuodong Zhao
- KU Leuven (University of Leuven), Department of Oral Health Sciences, Orthodontics and UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
| | - Stevan Čokić
- Department of Oral Health Sciences-BIOMAT, University of Leuven (KU Leuven) and UZ Leuven, Dentistry, Leuven, Belgium
| | - Merve Kübra Akta
- KU Leuven, Department of Materials Engineering (MTM), Biomaterials and Tissue Engineering Research Group, Leuven, Belgium
| | - Ana Belén Castro
- KU Leuven, Department of Oral Health Sciences, Periodontology & Oral Microbiology and UZ Leuven, Dentistry, Leuven, Belgium
| | - Bart Van Meerbeek
- Department of Oral Health Sciences-BIOMAT, University of Leuven (KU Leuven) and UZ Leuven, Dentistry, Leuven, Belgium
| | - Annabel Braem
- KU Leuven, Department of Materials Engineering (MTM), Biomaterials and Tissue Engineering Research Group, Leuven, Belgium
| | - Guy Willems
- KU Leuven (University of Leuven), Department of Oral Health Sciences, Orthodontics and UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
| | - Maria Cadenas de Llano-Pérula
- KU Leuven (University of Leuven), Department of Oral Health Sciences, Orthodontics and UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
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Laganà G, Paoloni V, Pavoni C, Palmacci D, Malara A. Tridimensional Changes in Mandibular Arch after Rapid Maxillary Expansion Therapy: A Clinical Study. Children (Basel) 2023; 10:children10050775. [PMID: 37238323 DOI: 10.3390/children10050775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/08/2023] [Accepted: 04/23/2023] [Indexed: 05/28/2023]
Abstract
Aim: The upper jaw transverse deficit is certainly one of the most common clinical issues in the orthodontic field. It can be due to skeletal or dental factors, and its etiology may be both genetic and environmental. Rapid maxillary expanders (RMEs) are certainly the most effective appliance for upper transverse deficiency correction. The aim of this study was to evaluate the changes that occurred in the mandibular arch during treatment with RMEs in growing subjects by analyzing tridimensional lower digital casts. Materials and Methods: The study group (SG) consisted of 20 subjects (10 M, 10 F; mean age 9.4 ± 2.8 years old) randomly selected at the Department of Orthodontics at the University of Rome, "Tor Vergata". The inclusion criteria were negative posterior transverse interarch discrepancy ≥ 4 mm, mixed dentition phase with first permanent molars erupted, and prepubertal skeletal maturation stage (CS1-2), evaluated on a lateral radiograph through the Cervical Vertebral Maturation method. The SG was compared to an untreated control group (CG) of 20 subjects (10 M, 10 F, mean age 8.7 ± 2.3 years old) enrolled with the same inclusion criteria. The SG was treated by using RMEs. Dental casts of the lower arch were taken at two different times (T0-T1 = 6 months). All the dental casts were scanned with an OrthoXscan (Dentaurum 6mmbh E Co., Ispringen, Germany) and twenty points on the mandibular arch were digitized using Viewbox software. A Student t-test was used to compare the means of the quantitative variables associated with the effect of the device over time T0 and T1. Results: The results show a statistically significant increase (p < 0.05) in the intercanine and the intermolar diameters between the times T0 and T1 when compared to the CG. Conclusions: Rapid maxillary orthopedic expansion may achieve an increase in mandibular intercanine and intermolar diameter.
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Affiliation(s)
- Giuseppina Laganà
- Department of Systems Medicine, University of Rome 'Tor Vergata', Viale Oxford 81, 00133 Rome, Italy
- UniCamillus-Saint Camillus International University of Health Sciences, Via S. Alessandro, 8, 00131 Rome, Italy
| | - Valeria Paoloni
- Department of Systems Medicine, University of Rome 'Tor Vergata', Viale Oxford 81, 00133 Rome, Italy
| | - Chiara Pavoni
- Department of Systems Medicine, University of Rome 'Tor Vergata', Viale Oxford 81, 00133 Rome, Italy
- UniCamillus-Saint Camillus International University of Health Sciences, Via S. Alessandro, 8, 00131 Rome, Italy
| | - Daniel Palmacci
- Department of Systems Medicine, University of Rome 'Tor Vergata', Viale Oxford 81, 00133 Rome, Italy
| | - Arianna Malara
- Department of Systems Medicine, University of Rome 'Tor Vergata', Viale Oxford 81, 00133 Rome, Italy
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Yildirim HS, Ates M, Gun IO, Kuru B, Cakirer B, Kuru L. Osteocalcin and cross-linked C-terminal telopeptide of type I collagen in gingival crevicular fluid during piezocision accelerated orthodontic tooth movement: A randomized split-mouth study. Niger J Clin Pract 2023; 26:470-477. [PMID: 37203112 DOI: 10.4103/njcp.njcp_539_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Background Piezocision, a minimally invasive surgical procedure, has been used to accelerate tooth movement'' is appropriate as a background to the abstract section. Aim The aim of this randomized split-mouth study was to evaluate gingival crevicular fluid (GCF) osteocalcin (OC) and type I collagen cross-linked C-terminal telopeptide (ICTP) levels during canine distalization with and without piezocision acceleration. Material and Methods Fifteen systemically healthy subjects (M:F 7:8, 16.27 ± 1.14 years) requiring extraction of maxillary first premolars before retraction of canines were included in the study. Piezocisions were randomly carried out on one of the maxillary canines while bilateral canines served as controls. Canine distalization was conducted using closed-coil springs applying a force of 150 g/side by using miniscrews as anchorage. GCF sampling was performed from maxillary canine mesial and distal sites at baseline, 1, 7, 14, and 28 days. The GCF levels of OC and ICTP were detected by enzyme-linked immunosorbent assay (ELISA). The rate of tooth movement was evaluated at 2-week intervals. Results The amounts of canine distalization from baseline to 14 and 28 days in the piezocision group were significantly higher than the control group (P < 0.05). The GCF OC level of the piezocision group on the tension side and the ICTP level of the same group on the compression side were higher than the respective sides of the control group on day 14 (P < 0.05). Conclusions Piezocision was found to be an effective treatment procedure for accelerating canine distalization accompanied by increased levels of OC and ICTP.
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Affiliation(s)
- H S Yildirim
- Department of Periodontology, Dental Faculty, Marmara University, Istanbul, Turkey
| | - M Ates
- Private Practitioner in Orthodontics, Istanbul, Turkey
| | - I O Gun
- Private Practitioner in Orthodontics, Istanbul, Turkey
| | - B Kuru
- Department of Periodontology, Dental Faculty, Yeditepe University, Istanbul, Turkey
| | - B Cakirer
- Department of Orthodontics, Dental Faculty, Okan University, Istanbul, Turkey
| | - L Kuru
- Department of Periodontology, Dental Faculty, Marmara University, Istanbul, Turkey
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Jedliński M, Mazur M, Greco M, Belfus J, Grocholewicz K, Janiszewska-Olszowska J. Attachments for the Orthodontic Aligner Treatment-State of the Art-A Comprehensive Systematic Review. Int J Environ Res Public Health 2023; 20:4481. [PMID: 36901488 PMCID: PMC10001497 DOI: 10.3390/ijerph20054481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/25/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND In recent years the burden of aligner treatment has been growing. However, the sole use of aligners is characterized by limitations; thus attachments are bonded to the teeth to improve aligner retention and tooth movement. Nevertheless, it is often still a challenge to clinically achieve the planned movement. Thus, the aim of this study is to discuss the evidence of the shape, placement and bonding of composite attachments. METHODS A query was carried out in six databases on 10 December 2022 using the search string ("orthodontics" OR "malocclusion" OR "Tooth movement techniques AND ("aligner*" OR "thermoformed splints" OR "invisible splint*" AND ("attachment*" OR "accessor*" OR "auxill*" AND "position*"). RESULTS There were 209 potential articles identified. Finally, twenty-six articles were included. Four referred to attachment bonding, and twenty-two comprised the influence of composite attachment on movement efficacy. Quality assessment tools were used according to the study type. CONCLUSIONS The use of attachments significantly improves the expression of orthodontic movement and aligner retention. It is possible to indicate sites on the teeth where attachments have a better effect on tooth movement and to assess which attachments facilitate movement. The research received no external funding. The PROSPERO database number is CRD42022383276.
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Affiliation(s)
- Maciej Jedliński
- Department of Interdisciplinary Dentistry, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
- Department of Dental and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy
| | - Marta Mazur
- Department of Interdisciplinary Dentistry, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
- Department of Dental and Maxillofacial Sciences, Sapienza University of Rome, 00161 Rome, Italy
| | - Mario Greco
- Department of Paediatric Dentistry, University of L’Aquila, 67100 L’Aquila, Italy
| | - Joyce Belfus
- Faculty of Dentistry, Universidad de los Andes, Santiago 7620001, Chile
| | - Katarzyna Grocholewicz
- Department of Interdisciplinary Dentistry, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
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Wagh SS, Nehete A, Gulve N, Aher S, Patil D, Tambe M. Comparative Evaluation of Effect of Micro-Osteoperforation and Mechanical Vibration on Rate of Orthodontic Tooth Movement in Young Adults With Bimaxillary Protrusion. Cureus 2023; 15:e36636. [PMID: 37155450 PMCID: PMC10122870 DOI: 10.7759/cureus.36636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2023] [Indexed: 05/10/2023] Open
Abstract
AIM To evaluate and compare the rate of orthodontic tooth movement and root resorption by micro-osteoperforation (MOP) and mechanical vibration in young adults with bimaxillary protrusion. METHOD Twenty patients having class I bimaxillary protrusion who required all first premolar extraction were allocated into two groups MOP (Group A) and mechanical vibration (Group B), with a 1:1 allocation ratio. After leveling alignment MOP was performed on either side of the arch, and vibration was applied on the contralateral side 20 mins per day. Canines were retracted with nickel-titanium coil springs, and Alginate impressions were taken every four weeks till 4 months. RESULT The mean rate of retraction of canines of Group A was more than Group B. There was a statistically significant difference between Group A and Group B. (p=0.0120) Conclusion: The mean rate of retraction of canines treated by MOP was 1.15 mm per 4 weeks, and by mechanical vibration, 0.8mm per 4 weeks.
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Affiliation(s)
- Supriya S Wagh
- Orthodontics and Dentofacial Orthopaedics, Mahatma Gandhi Vidyamandir's Karmaveer Bhausaheb Hiray Dental College & Hospital, Nashik, IND
| | - Amit Nehete
- Orthodontics and Dentofacial Orthopaedics, Mahatma Gandhi Vidyamandir's Karmaveer Bhausaheb Hiray Dental College & Hospital, Nashik, IND
| | - Nitin Gulve
- Orthodontics and Dentofacial Orthopaedics, Mahatma Gandhi Vidyamandir's Karmaveer Bhausaheb Hiray Dental College & Hospital, Nashik, IND
| | - Shivpriya Aher
- Orthodontics and Dentofacial Orthopaedics, Mahatma Gandhi Vidyamandir's Karmaveer Bhausaheb Hiray Dental College & Hospital, Nashik, IND
| | - Digvijay Patil
- Orthodontics and Dentofacial Orthopaedics, Mahatma Gandhi Vidyamandir's Karmaveer Bhausaheb Hiray Dental College & Hospital, Nashik, IND
| | - Mukul Tambe
- Orthodontics and Dentofacial Orthopaedics, Mahatma Gandhi Vidyamandir's Karmaveer Bhausaheb Hiray Dental College & Hospital, Nashik, IND
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Zhang Y, Cai P. Association between alveolar bone height changes in mandibular incisors and three-dimensional tooth movement in non-extraction orthodontic treatment with Invisalign. Orthod Craniofac Res 2023; 26:91-99. [PMID: 35491965 DOI: 10.1111/ocr.12583] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 04/14/2022] [Accepted: 04/20/2022] [Indexed: 01/07/2023]
Abstract
OBJECTIVE The purpose of this study was to investigate associations between alveolar bone height changes on the labial and lingual sides in mandibular incisors and three-dimensional orthodontic tooth movement, involving apex displacement, tooth inclination, and angulation. MATERIALS AND METHODS The samples consisted of 43 adult patients treated with Invisalign aligners. All subjects were skeletal Class I patients without extraction in mandible. Pre-treatment and post-treatment cone-beam computed tomographic images were obtained to measure labial and lingual alveolar bone height and bone thickness at apex level in four mandibular incisors. An x, y, z coordinate system, superimposing on mandibular body, was established to analyse three-dimensional apex movement and tooth inclination and angulation changes. Multiple linear regression was applied to identify the determining factors of marginal bone changes during orthodontic treatment. RESULTS Three directions of apex movement (anteroposterior, vertical, transverse) significantly associated with alveolar bone height changes. Inclination changes had a strong effect on lingual marginal bone, while tooth angulation had no significant effect on alveolar bone height. Incisors with lingual bodily movement were more susceptible to lingual marginal bone recession compared with lingual tipping movement. CONCLUSIONS Alveolar bone height changes on the labial and lingual sides were associated with three-dimensional apex movement, inclination changes, and movement patterns. Appropriate tooth movement should be considered to avoid excessive marginal bone loss around mandibular incisors.
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Affiliation(s)
- Yishan Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Ping Cai
- Department of Orthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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Muacevic A, Adler JR, B R, M H, M A, NR J. An Assessment and Comparison of Root Resorption With Two Different Corticotomy Techniques During Anterior Teeth Retraction: A Split Mouth Prospective Clinical Study. Cureus 2023; 15:e33431. [PMID: 36751229 PMCID: PMC9899329 DOI: 10.7759/cureus.33431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/05/2023] [Indexed: 01/09/2023] Open
Abstract
Aim The aim of this prospective split-mouth clinical study is to determine the apical root resorption of anterior teeth in patients with two different methods of corticotomy namely indentation and vertical corticotomy techniques. Methods Sixteen adult patients with bimaxillary protrusion requiring the need for extraction of the first premolars were included in the study. For each patient, the particular method of corticotomy technique was assigned randomly along with the side and the procedure was performed following which retraction forces were applied with the help of a closed coil Niti spring. The root resorption was recorded during the stage of space closure for which two cone beam computed tomography (CBCT) were taken, one before the retraction forces could be applied (T1) and one CBCT (T2) after the space closure had occurred. The apical root resorption was assessed and analyzed both linearly and volumetrically using the CBCT taken at T1 and T2. Results There was root resorption present after the space closure was complete in both the maxillary and mandibular arches. The amount of root resorption that occurred in the indentation technique was slightly lesser as compared to the vertical corticotomy technique. Conclusion Indentation corticotomy cuts for accelerated tooth movement are considered to be a much safer, more effective method, lesser invasive to the surrounding tissues, technique sensitive, and good regional acceleratory phenomenon (RAP), with a Rapid healing process compared to the vertical corticotomy technique.
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Li W, Zheng J, Xu Y, Niu W, Guo D, Cui J, Bian W, Wang X, Niu J. Remodeling of the periodontal ligament and alveolar bone during axial tooth movement in mice with type 1 diabetes. Front Endocrinol (Lausanne) 2023; 14:1098702. [PMID: 36755916 PMCID: PMC9900130 DOI: 10.3389/fendo.2023.1098702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/09/2023] [Indexed: 01/24/2023] Open
Abstract
OBJECTIVES To observe the elongation of the axial tooth movement in the unopposed rodent molar model with type 1 diabetes mellitus and explore the pathological changes of periodontal ligament and alveolar bone, and their correlation with tooth axial movement. METHODS The 80 C57BL/6J mice were randomly divided into the streptozotocin(STZ)-injected group (n = 50) and the control group (n = 30). Mice in the streptozotocin(STZ)-injected group were injected intraperitoneal with streptozotocin (STZ), and mice in the control group were given intraperitoneal injection of equal doses of sodium citrate buffer. Thirty mice were randomly selected from the successful models as the T1DM group. The right maxillary molar teeth of mice were extracted under anesthesia, and allowed mandibular molars to super-erupt. Mice were sacrificed at 0, 3, 6,9, and 12 days. Tooth elongation and bone mineral density (BMD) were evaluated by micro-CT analysis(0,and 12 days mice). Conventional HE staining, Masson staining and TRAP staining were used to observe the changes in periodontal tissue(0, 3, 6, 9, and 12 days mice). The expression differences of SPARC, FGF9, BMP4, NOGGIN, and type I collagen were analyzed by RT-qPCR. RESULTS After 12 days of tooth extraction, our data showed significant super-eruption of mandibular mouse molars of the two groups. The amount of molar super-eruption in the T1DM group was 0.055mm( ± 0.014mm), and in the control group was 0.157( ± 0.017mm). The elongation of the T1DM mice was less than that of the control mice(P<0.001). It was observed that the osteoclasts and BMD increased gradually in both groups over time. Compared with the control group, the collagen arrangement was more disordered, the number of osteoclasts was higher (P<0.05), and the increase of bone mineral density was lower(2.180 ± 0.007g/cm3 vs. 2.204 ± 0.006g/cm3, P<0.001) in the T1DM group. The relative expression of SPARC, FGF9, BMP4, and type I collagen in the two groups increased with the extension of tooth extraction time while NOGGIN decreased. The relative expression of all of SPARC, FGF9, BMP4, and type I collagen in the T1DM group were significantly lower, and the expression of NOGGIN was higher than that in the control group (P<0.05). CONCLUSION The axial tooth movement was inhibited in type 1 diabetic mice. The result may be associated with the changes of periodontal ligament osteoclastogenic effects and alveolar bone remodeling regulated by the extracellular matrix and osteogenesis-related factors.
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Affiliation(s)
- Wenjin Li
- Department of Stomatology, 2nd Hospital, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jing Zheng
- School of Basic Medicine, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yao Xu
- Stomatological Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Weiran Niu
- Department of Mental Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Dong Guo
- Stomatological Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jianing Cui
- Medical Imaging Department of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Wenjin Bian
- Medical Imaging Department of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xiaohui Wang
- School of Basic Medicine, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jinliang Niu
- Department of Radiology, 2nd Hospital, Shanxi Medical University, Taiyuan, Shanxi, China
- *Correspondence: Jinliang Niu,
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Küchler EC, Schröder A, Spanier G, Thedei G, Carvalho Ribeiro de Oliveira MB, de Menezes-Oliveira MAH, Proff P, Kirschneck C. Influence of Single-Nucleotide Polymorphisms on Vitamin D Receptor Expression in Periodontal Ligament Fibroblasts as a Response to Orthodontic Compression. Int J Mol Sci 2022; 23:ijms232415948. [PMID: 36555589 PMCID: PMC9787981 DOI: 10.3390/ijms232415948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
This study aimed to evaluate if single-nucleotide polymorphisms (SNPs) in the vitamin D receptor (VDR) gene are associated with gene expression in human periodontal ligament (hPDL) fibroblasts under simulated orthodontic compressive force. hPDL samples from 57 patients were used. A physiological compressive strain was performed to simulate orthodontic tooth movement in pressure areas under cell culture conditions. The RNA from hPDL fibroblasts was isolated to determine the relative gene expression (mRNA) of the VDR. The DNA was also isolated for the genotyping analysis of five SNPs in the VDR gene: BglI (rs739837, G/T), BsmI (rs1544410, T/C), ApaI (rs7975232, A/C), FokI (rs2228570, A/G), and TaqI (rs731236, A/G). Real-time polymerase chain reaction was used for both analyses. Kruskal−Wallis tests were used to compare VDR expression among genotypes of each SNP. A linear regression analysis was performed to evaluate SNP−SNP interaction. An established alpha of 5% was used. The relative mRNA VDR expression according to the genotypes in the SNPs BglI, BsmI, ApaI, FokI, and TaqI was not statistically significantly different (p > 0.05). The SNP−SNP interaction evaluated by regression analysis did not demonstrate any statistically significant association. No association was observed (p > 0.05). In conclusion, the SNPs BglI (rs739837), BsmI (rs1544410), ApaI (rs7975232), FokI (rs2228570), and TaqI (rs731236) did not show an impact on VDR gene expression in hPDL fibroblasts under simulated orthodontic compressive force.
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Affiliation(s)
- Erika Calvano Küchler
- Department of Orthodontics, University of Regensburg, 93047 Regensburg, Germany
- Department of Biomaterials, University of Uberaba, Uberaba 38010-200, Brazil
| | - Agnes Schröder
- Department of Orthodontics, University of Regensburg, 93047 Regensburg, Germany
| | - Gerrit Spanier
- Department of Maxillofacial Surgery, University of Regensburg, 93047 Regensburg, Germany
| | - Geraldo Thedei
- Department of Biomaterials, University of Uberaba, Uberaba 38010-200, Brazil
| | | | | | - Peter Proff
- Department of Orthodontics, University of Regensburg, 93047 Regensburg, Germany
| | - Christian Kirschneck
- Department of Orthodontics, University of Regensburg, 93047 Regensburg, Germany
- Correspondence: ; Tel.:+49-941/944-6095/6093; Fax: +49-941/944-6169
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e Alves Cardoso CA, Valerio CS, de Carvalho Carmelo *J, Rodrigues LG, Vespasiano Silva AI, Manzi FR. Impact of orthodontic correction of dental crowding with pre-molar extraction in the anterior mandible evaluated by cone-beam computed tomography. J Orthod Sci 2022; 11:47. [PMID: 36411807 PMCID: PMC9674933 DOI: 10.4103/jos.jos_190_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 05/07/2022] [Accepted: 05/26/2022] [Indexed: 11/27/2022] Open
Abstract
INTRODUCTION: To evaluate, by cone-beam computed tomography (CBCT), the change in thickness and height of the alveolar bone and interdental septum in the anterior mandible after orthodontic treatment for dental crowding using tooth extraction. MATERIAL AND METHODS: The sample consisted of 48 mandibular incisors from adult patients who presented with Class I malocclusion and required orthodontic treatment with the extraction of mandibular premolars. CBCT images were taken before starting the treatment (T1) and three months after treatment (T2). The following measurements were evaluated: width and height of the alveolar bone and the interdental septum, the distance between the cementoenamel junction and the bone ridges (F-CEJ-MBC and L-CEJ-MBC), as well as the vertical positioning and inclination of the incisor, using the Lingual Plane as the reference point. The paired Student's t-test and Pearson correlation were used with a significance level of 5%. RESULTS: A significant increase was observed in the distance L-CEJ-MBC, which shows the appearance of bone dehiscence. The degree of dental crowding was not a risk factor for the development of dehiscence. The decrease in the incisor inclination and intrusion was related to the formation of dehiscence on the lingual surface. CONCLUSION: The variation in the incisor's inclination and intrusion during the treatment of dental crowding using tooth extraction are related to the formation of bone dehiscence on its lingual surface.
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Affiliation(s)
- Cláudia Assunção e Alves Cardoso
- Department of Dentistry, Pontifical Catholic University of Minas Gerais, Av. Dom José Gaspar, 500 - Prédio 45, CEP: 30535-901, Belo Horizonte, Minas Gerais, Brazil
| | - Claudia Scigliano Valerio
- Department of Orthodontics, Faculdade Arnaldo, Praça João Pessoa, 200 - Funcionários, CEP: 30310-360, Belo Horizonte, Minas Gerais, Brazil
| | - *Juliana de Carvalho Carmelo
- Department of Dentistry, Pontifical Catholic University of Minas Gerais, Av. Dom José Gaspar, 500 - Prédio 45, CEP: 30535-901, Belo Horizonte, Minas Gerais, Brazil,Address for correspondence: Prof. Juliana de Carvalho Carmelo, Department of Oral Radiology, School of Dentistry, Pontifical Catholic University of Minas Gerais. Av. Dom José Gaspar, 500 - Prédio 45, CEP: 30535-901, Belo Horizonte, Minas Gerais, Brazil. E-mail:
| | - Lizandra Gonzaga Rodrigues
- Department of Dentistry, Pontifical Catholic University of Minas Gerais, Av. Dom José Gaspar, 500 - Prédio 45, CEP: 30535-901, Belo Horizonte, Minas Gerais, Brazil
| | - Amaro Ilídio Vespasiano Silva
- Department of Dentistry, Pontifical Catholic University of Minas Gerais, Av. Dom José Gaspar, 500 - Prédio 45, CEP: 30535-901, Belo Horizonte, Minas Gerais, Brazil
| | - Flávio Ricardo Manzi
- Department of Dentistry, Pontifical Catholic University of Minas Gerais, Av. Dom José Gaspar, 500 - Prédio 45, CEP: 30535-901, Belo Horizonte, Minas Gerais, Brazil
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Schuldt L, von Brandenstein K, Jacobs C, Symmank J. Oleic acid-related anti-inflammatory effects in force-stressed PdL fibroblasts are mediated by H3 lysine acetylation associated with altered IL10 expression. Epigenetics 2022; 17:1892-1904. [PMID: 35763686 DOI: 10.1080/15592294.2022.2090654] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The initiation of a spatially and temporally limited inflammation is essential for tissue and bone remodelling by the periodontal ligament (PdL) located between teeth and alveolar bone. Nutritional components may cause alterations in the inflammatory response of PdL fibroblasts to mechanical stress such as those occurring during orthodontic tooth movement (OTM). Recently, we reported an attenuated pro-inflammatory response of human PdL fibroblasts (HPdLFs) to compressive forces when stimulated with oleic acid (OA), a monounsaturated fatty acid particularly prominent in the Mediterranean diet. Fatty acids could serve as alternative source of acetyl-CoA, thereby affecting epigenetic histone marks, such as histone 3 lysine acetylation (H3Kac) in a lipid metabolism-dependent manner. In this study, we aimed to investigate the extent to which OA exerts its anti-inflammatory effect in compressed HPdLFs via changes in H3Kac. Six-hour compressed HPdLFs showed increased H3Kac when cultured with OA. Inhibition of histone deacetylases resulted in a comparable IL10-increase as observed in compressed OA-cultures. In contrast, inhibition of histone acetyltransferases, particularly p300/CBP, in compressed HPdLFs exposed to OA normalized the inflammatory response to control levels. OA-dependent increased association of H3Kac to IL10 promoter regions in compressed HPdLFs further strengthened the assumption that OA exhibits its anti-inflammatory properties via modulation of this epigenetic mark. In conclusion, our study strongly suggests that nutritional components can directly affect PdL cells via changes in their epigenetic code. Since epigenetic inhibitors are already widely used clinically, they may hold promise for novel approaches for personalized orthodontic treatment that incorporates nutritional and metabolism-related changes.
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Affiliation(s)
- Lisa Schuldt
- Department of Orthodontics, University Hospital Jena, Jena, Germany
| | | | - Collin Jacobs
- Department of Orthodontics, University Hospital Jena, Jena, Germany
| | - Judit Symmank
- Department of Orthodontics, University Hospital Jena, Jena, Germany
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D’Antò V, Bucci R, De Simone V, Huanca Ghislanzoni L, Michelotti A, Rongo R. Evaluation of Tooth Movement Accuracy with Aligners: A Prospective Study. Materials (Basel) 2022; 15:ma15072646. [PMID: 35407978 PMCID: PMC9000684 DOI: 10.3390/ma15072646] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/28/2022] [Accepted: 04/02/2022] [Indexed: 01/05/2023]
Abstract
Background. Clear aligners treatment (CAT) is a common solution in orthodontics to treat both simple and complex malocclusions. This study aimed to evaluate the predictability of CAT, comparing the virtually planned and the achieved tooth movement at the end of stage 15, which is often the time of first refinement. Methods. Seventeen patients (mean age: 28.3 years) were enrolled in the study. Torque, tip and rotation were analyzed in 238 maxillary teeth on digital models at Pre-treatment (T0), at the end of stage 15 (T15) and at virtually planned stage 15 (T15i). Prescription, Achieved movement and performance values were calculated to compare the virtually planned and the clinical tooth position. Data were analyzed by means of Student’s t test with a level of significance set at p < 0.05. Results. The largest iper-performance was the torque correction of the second molars (+2.3° ± 3.1°), the greatest under-performance was the tip correction of the first molars (−2.3° ± 3.3°), while rotation corrections of all the teeth showed more accurate performance. No significant differences were found between mean Prescription and mean Achieved movement for all the assessed movements (p < 0.05). Conclusions. An accurate evaluation of CAT after the 15th aligner is fundamental in order to individuate the movements that are not matching the digital set-up.
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Affiliation(s)
- Vincenzo D’Antò
- Department of Neuroscience, Reproductive Sciences and Oral Sciences, University of Naples “Federico II”, 80138 Naples, Italy; (R.B.); (V.D.S.); (A.M.); (R.R.)
- Correspondence:
| | - Rosaria Bucci
- Department of Neuroscience, Reproductive Sciences and Oral Sciences, University of Naples “Federico II”, 80138 Naples, Italy; (R.B.); (V.D.S.); (A.M.); (R.R.)
| | - Vincenzo De Simone
- Department of Neuroscience, Reproductive Sciences and Oral Sciences, University of Naples “Federico II”, 80138 Naples, Italy; (R.B.); (V.D.S.); (A.M.); (R.R.)
| | | | - Ambrosina Michelotti
- Department of Neuroscience, Reproductive Sciences and Oral Sciences, University of Naples “Federico II”, 80138 Naples, Italy; (R.B.); (V.D.S.); (A.M.); (R.R.)
| | - Roberto Rongo
- Department of Neuroscience, Reproductive Sciences and Oral Sciences, University of Naples “Federico II”, 80138 Naples, Italy; (R.B.); (V.D.S.); (A.M.); (R.R.)
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Nam YS, Yang DW, Moon JS, Kang JH, Cho JH, Kim OS, Kim MS, Koh JT, Kim YJ, Kim SH. Sclerostin in Periodontal Ligament: Homeostatic Regulator in Biophysical Force-Induced Tooth Movement. J Clin Periodontol 2022; 49:932-944. [PMID: 35373367 DOI: 10.1111/jcpe.13624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 02/25/2022] [Accepted: 03/29/2022] [Indexed: 11/30/2022]
Abstract
AIM This study elucidates the role of sclerostin in periodontal ligament (PDL) as a homeostatic regulator in biophysical force-induced tooth movement (BFTM). MATERIALS AND METHODS BFTM was performed in rats, followed by microarray, immunofluorescence, in situ hybridization, and real-time PCR for detection and identification of the molecules. The periodontal space was analyzed via micro-computed tomography. Effects on osteoclastogenesis and bone resorption were evaluated in mouse bone marrow-derived cells. In vitro human PDL cells were subjected to biophysical forces. RESULTS In the absence of BFTM, sclerostin was hardly detected in the periodontium except the PDL and alveolar bone in the furcation region and apex of the molar roots. However, sclerostin was upregulated in the PDL in vivo by adaptable force, which induced typical transfiguration without changes in periodontal space as well as in vitro PDL cells under compression and tension. In contrast, the sclerostin level was unaffected by heavy force, which caused severe degeneration of the PDL and narrowed periodontal space. Sclerostin inhibited osteoclastogenesis and bone resorption, which corroborates the accelerated tooth movement by the heavy force. CONCLUSIONS Sclerostin in PDL may be a key homeostatic molecule in the periodontium and a biological target for the therapeutic modulation of BFTM. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yoo-Sung Nam
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Dong-Wook Yang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jung-Sun Moon
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jee-Hae Kang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Ok-Su Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Seok Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jeong-Tae Koh
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Young-Jun Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Sun-Hun Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
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Crawford D, Lau TC, Frost MC, Hatch NE. Control of Orthodontic Tooth Movement by Nitric Oxide Releasing Nanoparticles in Sprague-Dawley Rats. Front Dent Med 2022; 9:811251. [PMID: 36081866 PMCID: PMC9451041 DOI: 10.3389/fmats.2022.811251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023] Open
Abstract
UNLABELLED Orthodontic treatment commonly requires the need to prevent movement of some teeth while maximizing movement of other teeth. This study aimed to investigate the influence of locally injected nitric oxide (NO) releasing nanoparticles on orthodontic tooth movement in rats. MATERIALS AND METHODS Experimental tooth movement was achieved with nickel-titanium alloy springs ligated between the maxillary first molar and ipsilateral incisor. 2.2 mg/kg of silica nanoparticles containing S-nitrosothiol groups were injected into the mucosa just mesial to 1st molar teeth immediately prior to orthodontic appliance activation. NO release from nanoparticles was measured in vitro by chemiluminescence. Tooth movement was measured using polyvinyl siloxane impressions. Bones were analyzed by microcomputed tomography. Local tissue was assessed by histomorphometry. RESULTS Nanoparticles released a burst of NO within the first hours at approximately 10 ppb/mg particles that diminished by 10 × to approximately 1 ppb/mg particles over the next 1-4 days, and then diminished again by tenfold from day 4 to day 7, at which point it was no longer measurable. Molar but not incisor tooth movement was inhibited over 50% by injection of the NO releasing nanoparticles. Inhibition of molar tooth movement occurred only during active NO release from nanoparticles, which lasted for approximately 1 week. Molar tooth movement returned to control levels of tooth movement after end of NO release. Alveolar and long bones were not impacted by injection of the NO releasing nanoparticles, and serum cyclic guanosine monophosphate (cGMP) levels were not increased in animals that received the NO releasing nanoparticles. Root resorption was decreased and periodontal blood vessel numbers were increased in animals with appliances that were injected with the NO releasing nanoparticles as compared to animals with appliances that did not receive injections with the nanoparticles. CONCLUSION Nitric oxide (NO) release from S-nitrosothiol containing nanoparticles inhibits movement of teeth adjacent to the site of nanoparticle injection for 1 week. Additional studies are needed to establish biologic mechanisms, optimize efficacy and increase longevity of this orthodontic anchorage effect.
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Affiliation(s)
- Derrick Crawford
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, MI, United States
| | - Tommy C. Lau
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, MI, United States
| | - Megan C. Frost
- Department of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, MI, United States
| | - Nan E. Hatch
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of Michigan, Ann Arbor, MI, United States
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Türedi M, Yazıcıoğlu S. The Effects of Increased Maxillary Canine Bracket Angulation on Tooth Movement and Alignment Efficiency: A Prospective Clinical Study. Turk J Orthod 2022; 35:33-38. [PMID: 35370132 PMCID: PMC9128582 DOI: 10.5152/turkjorthod.2022.20143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 08/15/2021] [Indexed: 09/17/2023]
Abstract
OBJECTIVE This study aimed to evaluate the effects of a 10° angulation of a maxillary canine (Mx3) bracket on Mx3 and maxillary central incisor (Mx1) tooth movements and alignment efficiency in treatments involving maxillary premolar extraction. METHODS This split-mouth study included 29 individuals in a +10° angulation study group and a 0° angulation control group. The initial (T0) and 12th week (T1) orthodontic models were prepared and digitized with a three-dimensional scanner and superimposed using the OrthoAnalyzer analysis program. The movements of Mx3 and Mx1 were measured, and the alignment efficiency was assessed using Little's Irregularity Index. The Shapiro-Wilk test was used to test the data for a normal distribution. T1 and T0 measurements within the group and T1 and T0 differences between groups were compared using a paired samples t-test. The significance level was set to P < .05. RESULTS The linear movements of Mx3 in the distal direction significantly increased, and Little's Irregularity Index values statistically significantly decreased in both groups. Distal movements of Mx3 were significantly higher in the control group than in the study group (P< 0.01 and P< 0.05). The movements of Mx1 and Little's Irregularity Index measurements did not show statistically significant differences between the groups (P > 0.05). CONCLUSION A +10° Mx3 bracket angulation increased the inclination of Mx3 to the mesial, but it decreased the Mx3 distal linear movement and the retraction of Mx1, with no difference in terms of alignment efficiency between the+10° and 0° Mx3 bracket angulations.
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Affiliation(s)
| | - Sabahat Yazıcıoğlu
- Department of Orthodontics, Ondokuz Mayıs University Faculty of Dentistry, Samsun, Turkey
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Schröder A, Schöniger R, Oeldemann J, Spanier G, Proff P, Jantsch J, Kirschneck C, Ullrich N. An Evaluation of Different 3D Cultivation Models on Expression Profiles of Human Periodontal Ligament Fibroblasts with Compressive Strain. Int J Mol Sci 2022; 23:2029. [PMID: 35216145 DOI: 10.3390/ijms23042029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 11/17/2022] Open
Abstract
The effects of compressive strain during orthodontic treatment on gene expression profiles of periodontal ligament fibroblasts (PDLFs) have mostly been studied in 2D cell culture. However, cells behave differently in many aspects in 3D culture. Therefore, the effect of pressure application on PDLFs in different 3D structures was investigated. PDLFs were either conventionally seeded or embedded into different 3D structures (spheroids, Mebiol® gel, 3D scaffolds) and exposed to compressive force or incubated without pressure. For one 3D scaffold (POR), we also tested the effect of different compressive forces and application times. Expression of an angiogenic gene (VEGF), a gene involved in extracellular matrix synthesis (COL1A2), inflammatory genes (IL6, PTGS2), and genes involved in bone remodelling (OPG, RANKL) were investigated by RT-qPCR. Depending on the used 3D cell culture model, we detected different effects of compressive strain on expression profiles of PDLFs. COL1A2 was downregulated in all investigated 3D culture models. Angiogenetic and proinflammatory genes were regulated differentially between models. In 3D scaffolds, regulation of bone-remodelling genes upon compressive force was contrary to that observed in 3D gels. 3D cell culture models provide better approximations to in vivo physiology, compared with conventional 2D models. However, it is crucial which 3D structures are used, as these showed diverse effects on the expression profiles of PDLFs during mechanical strain.
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Lam Y, Seehra J, Abela S, Cobourne MT. A cross-sectional study of exposure across social media platforms for the British Orthodontic Society retention awareness campaign: #HoldthatSmile. J Orthod 2021; 49:56-63. [PMID: 34727756 PMCID: PMC8915220 DOI: 10.1177/14653125211054859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The use of media campaigns in health promotion has become more common in recent years. #HoldthatSmile is a British Orthodontic Society life-long retention awareness campaign aimed at the general public and dental profession launched in 2017. This study investigated #HoldthatSmile exposure on social media platforms over a 12-month period following campaign launch. DESIGN A cross-sectional content analysis. SETTING Public-facing, English-language posts tagged #HoldthatSmile on the Facebook, Instagram and Twitter social media platforms. METHODS Data were collected relating to a 12-month period, from September 2017 immediately following campaign launch, to the end of September 2018. The primary outcome was exposure to the #HoldthatSmile campaign on the different platforms through analysis of posts, measurement of audience reached and engagement. Secondary outcomes included demographics of user-types and content analysis of reactive comments on posts. RESULTS A total of 205 relevant posts with #HoldthatSmile were identified on Twitter (n=90, 43.9%), Facebook (n=64, 31.2%) and Instagram (n=51, 24.9%) with an overall calculated audience reach of 108,807 individuals. There were 1849 reactions across the three platforms. The percentage of reactions that generated comments was low at 3%, 6.1% and 5.7% for Twitter, Facebook and Instagram, respectively. Just over three-quarters of users were either Dental Surgeries (53%) or Professional Dental Bodies (28%) and the vast majority were from the United Kingdom. Overall, most comments were positive (46%, n=36) or neutral (44%, n=35) with only 10% (n=8) negative. The overriding theme was a person's name, with the user commonly typing a friend's name in order to bring their attention to the post. CONCLUSION There were a relatively low number of posts relevant to #HoldthatSmile on Twitter, Facebook and Instagram over the campaign's first 12 months. However, the majority of these did convey positive or neutral messages.
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Affiliation(s)
- Yung Lam
- Department of Orthodontics, Centre for Craniofacial Development & Regeneration, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Jadbinder Seehra
- Department of Orthodontics, Centre for Craniofacial Development & Regeneration, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Stefan Abela
- Department of Orthodontics, Centre for Craniofacial Development & Regeneration, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Martyn T Cobourne
- Department of Orthodontics, Centre for Craniofacial Development & Regeneration, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
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Ageel BM, Siraj EA, Zawawi KH, Afify AR. The Prevalence of Root Resorption after Orthodontic Treatment in Patients Attending a University Hospital Dental Clinic. J Pharm Bioallied Sci 2021; 13:S965-S968. [PMID: 35017908 PMCID: PMC8686961 DOI: 10.4103/jpbs.jpbs_82_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/19/2021] [Accepted: 04/09/2021] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION After orthodontic treatment, some teeth undergo external root resorption due to different factors, such as the root shape, oral habits, biological and genetic factor, gender, and age. Furthermore, extraction cases, long treatment duration, and the amount of force applied during the treatment might be related to root resorption. MATERIALS AND METHODS Panoramic radiographs for 226 patients treated in the orthodontic department were screened. The lower first permanent molars, lower second premolars, and lower first premolars were measured in centimeters on a ruler using ImageJ System. Teeth were measured from the cusp tip to the cementoenamel junction (CEJ) and from the CEJ to the root apex, and then, the tooth was measured as a whole before and after the treatment. RESULTS Multiple analysis of variance showed that there were no interactions between the root lengths of all teeth tested and either gender, treatment type, or treatment duration (P > 0.05). CONCLUSION Based on the results of this study, no statistically significance relationship between external apical root resorption and gender, type of treatment, and treatment duration was found.
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Affiliation(s)
- Basmah Mustafa Ageel
- Dental Intern, Dentistry Program, King Abdulaziz University, Jeddah, Saudi Arabia,Address for correspondence: Dr. Basmah Mustafa Ageel, King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi Arabia. E-mail:
| | | | - Khalid Hashim Zawawi
- Department of Orthodontic, King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi Arabia
| | - Ahmed Rami Afify
- Department of Orthodontic, King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi Arabia
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Koletsi D, Iliadi A, Eliades T. Predictability of rotational tooth movement with orthodontic aligners comparing software-based and achieved data: A systematic review and meta-analysis of observational studies. J Orthod 2021; 48:277-287. [PMID: 34176358 PMCID: PMC8385585 DOI: 10.1177/14653125211027266] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE To evaluate all available evidence on the prediction of rotational tooth movements with aligners. DATA SOURCES Seven databases of published and unpublished literature were searched up to 4 August 2020 for eligible studies. DATA SELECTION Studies were deemed eligible if they included evaluation of rotational tooth movement with any type of aligner, through the comparison of software-based and actually achieved data after patient treatment. DATA EXTRACTION AND DATA SYNTHESIS Data extraction was done independently and in duplicate and risk of bias assessment was performed with the use of the QUADAS-2 tool. Random effects meta-analyses with effect sizes and their 95% confidence intervals (CIs) were performed and the quality of the evidence was assessed through GRADE. RESULTS Seven articles were included in the qualitative synthesis, of which three contributed to meta-analyses. Overall results revealed a non-accurate prediction of the outcome for the software-based data, irrespective of the use of attachments or interproximal enamel reduction (IPR). Maxillary canines demonstrated the lowest percentage accuracy for rotational tooth movement (three studies: effect size = 47.9%; 95% CI = 27.2-69.5; P < 0.001), although high levels of heterogeneity were identified (I2: 86.9%; P < 0.001). Contrary, mandibular incisors presented the highest percentage accuracy for predicted rotational movement (two studies: effect size = 70.7%; 95% CI = 58.9-82.5; P < 0.001; I2: 0.0%; P = 0.48). Risk of bias was unclear to low overall, while quality of the evidence ranged from low to moderate. CONCLUSION Allowing for all identified caveats, prediction of rotational tooth movements with aligner treatment does not appear accurate, especially for canines. Careful selection of patients and malocclusions for aligner treatment decisions remain challenging.
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Affiliation(s)
- Despina Koletsi
- Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Anna Iliadi
- Department of Dental Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, Attica, Greece
| | - Theodore Eliades
- Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
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Şen S, Lux CJ, Erber R. A Potential Role of Semaphorin 3A during Orthodontic Tooth Movement. Int J Mol Sci 2021; 22:8297. [PMID: 34361063 DOI: 10.3390/ijms22158297] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/29/2021] [Accepted: 07/31/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Induced tooth movement during orthodontic therapy requires mechano-induced bone remodeling. Besides various cytokines and growth-factors, neuronal guidance molecules gained attention for their roles in bone homeostasis and thus, potential roles during tooth movement. Several neuronal guidance molecules have been implicated in the regulation of bone remodeling. Amongst them, Semaphorin 3A is particular interesting as it concurrently induces osteoblast differentiation and disturbs osteoclast differentiation. METHODS Mechano-regulation of Sema3A and its receptors PlexinA1 and Neuropilin (RT-qPCR, WB) was evaluated by applying compressive and tension forces to primary human periodontal fibroblasts (hPDLF) and alveolar bone osteoblasts (hOB). The association of the transcription factor Osterix (SP7) and SEMA3A was studied by RT-qPCR. Mechanisms involved in SEMA3A-mediated osteoblast differentiation were assessed by Rac1GTPase pull-downs, β-catenin expression analyses (RT-qPCR) and nuclear translocation assays (IF). Osteogenic markers were analyzed by RT-qPCR. RESULTS SEMA3A, PLXNA1 and NRP1 were differentially regulated by tension or compressive forces in hPDLF. Osterix (SP7) displayed the same pattern of regulation. Recombinant Sema3A induced the activation of Rac1GTPase, the nuclear translocation of β-catenin and the expression of osteogenic marker genes. CONCLUSION Sema3A, its receptors and Osterix are regulated by mechanical forces in hPDLF. SEMA3A upregulation was associated with Osterix (SP7) modulation. Sema3A-enhanced osteogenic marker gene expression in hOB might be dependent on a pathway involving Rac1GTPase and β-catenin. Thus, Semaphorin 3A might contribute to bone remodeling during induced tooth movement.
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Jiang N, He D, Ma Y, Su J, Wu X, Cui S, Li Z, Zhou Y, Yu H, Liu Y. Force-Induced Autophagy in Periodontal Ligament Stem Cells Modulates M1 Macrophage Polarization via AKT Signaling. Front Cell Dev Biol 2021; 9:666631. [PMID: 34124048 PMCID: PMC8187804 DOI: 10.3389/fcell.2021.666631] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/22/2021] [Indexed: 12/20/2022] Open
Abstract
Autophagy, a lysosomal degradation pathway, serves as a protective cellular mechanism in maintaining cell and tissue homeostasis under mechanical stimulation. As the mechanosensitive cells, periodontal ligament stem cells (PDLSCs) play an important role in the force-induced inflammatory bone remodeling and tooth movement process. However, whether and how autophagy in PDLSCs influences the inflammatory bone remodeling process under mechanical force stimuli is still unknown. In this study, we found that mechanical force stimuli increased the expression of the autophagy protein LC3, the number of M1 macrophages and osteoclasts, as well as the ratio of M1/M2 macrophages in the compression side of the periodontal ligament in vivo. These biological changes induced by mechanical force were repressed by the application of an autophagy inhibitor 3-methyladenine. Moreover, autophagy was activated in the force-loaded PDLSCs, and force-stimulated PDLSC autophagy further induced M1 macrophage polarization in vitro. The macrophage polarization could be partially blocked by the administration of autophagy inhibitor 3-methyladenine or enhanced by the administration of autophagy activator rapamycin in PDLSCs. Mechanistically, force-induced PDLSC autophagy promoted M1 macrophage polarization via the inhibition of the AKT signaling pathway. These data suggest a novel mechanism that force-stimulated PDLSC autophagy steers macrophages into the M1 phenotype via the AKT signaling pathway, which contributes to the inflammatory bone remodeling and tooth movement process.
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Affiliation(s)
- Nan Jiang
- Central Laboratory, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Danqing He
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yushi Ma
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Junxiang Su
- Department of Endodontics, Shanxi Medical University School and Hospital of Stomatology, Shanxi, China
| | - Xiaowen Wu
- Department of Endodontics, Shanxi Medical University School and Hospital of Stomatology, Shanxi, China
| | - Shengjie Cui
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Zixin Li
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yanheng Zhou
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Huajie Yu
- The Fourth Division, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yan Liu
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
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Lee SY, Moon JS, Yang DW, Yoo HI, Jung JY, Kim OS, Kim MS, Koh JT, Chung HJ, Kim SH. SLPI in periodontal Ligament is not sleepy during biophysical force-induced tooth movement. J Clin Periodontol 2021; 48:528-540. [PMID: 33370451 DOI: 10.1111/jcpe.13416] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/09/2020] [Accepted: 12/23/2020] [Indexed: 12/14/2022]
Abstract
AIM We aimed to identify a key molecule that maintains periodontal tissue homeostasis during biophysical force-induced tooth movement (BTM) by orchestrating alveolar bone (AB) remodelling. MATERIALS AND METHODS Differential display-PCR was performed to identify key molecules for BTM in rats. To investigate the localization and expression of the identified molecules, immunofluorescence, real-time RT-PCR and Western blotting were performed in rats and human periodontal ligament (PDL) cells. Functional test and micro-CT analysis were performed to examine the in vivo effects of the identified molecules on BTM. RESULTS Secretory leucocyte peptidase inhibitor (SLPI) in the PDL was revealed as a key molecule for BTM-induced AB remodelling. SLPI was enhanced in the PDL under both compression and tension, and downregulated by an adenyl cyclases inhibitor. SLPI induced osteoblastogenic genes including runt-related transcription factor 2 (Runx2) and synergistically augmented tension-induced Runx2 expression. SLPI augmented mineralization in PDL cells. SLPI induced osteoclastogenic genes including receptor activator of nuclear factor kappa-Β ligand (RANKL) and synergistically augmented the compression-induced RANKL and macrophage colony-stimulating factor (MCSF) expression. Finally, the in vivo SLPI application into the AB significantly augmented BTM. CONCLUSIONS SLPI or its inhibitors might serve as a biological target molecule for therapeutic interventions to modulate BTM.
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Affiliation(s)
- Su-Young Lee
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jung-Sun Moon
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Dong-Wook Yang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hong-Il Yoo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Korea
| | - Ji-Yeon Jung
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Ok-Su Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Seok Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jeong-Tae Koh
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hyun-Ju Chung
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Sun-Hun Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
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Guo D, Pan S, Mühlemann S, Zhou Y, E Jung R. The migration of neighboring and antagonist teeth three months after implant placement in healed single tooth-missing sites. Clin Oral Implants Res 2020; 32:233-241. [PMID: 33258186 DOI: 10.1111/clr.13694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/19/2020] [Accepted: 11/21/2020] [Indexed: 01/12/2023]
Abstract
OBJECTIVES To quantify the neighboring and antagonist teeth migration of a single posterior tooth-missing site within 3 months using digital scanning and measuring techniques. MATERIALS AND METHODS Intraoral scans (IOS) were made in 40 patients presenting a single posterior tooth-missing gap and receiving implant therapy. IOS were obtained at the day of and three months after implant surgery rendering a digital baseline model (BM) and a digital follow-up model (FM). Digital models were superimposed using the implant scan body as reference. Antagonist models were processed by the best fit alignment. Dimensional change between anatomical landmarks on neighboring teeth and that of featuring points on antagonistic teeth were measured using a three-dimensional analysis software. The Mann-Whitney U test was applied to compare the tooth-moving distance between the mesial and distal neighboring teeth. The Kruskal-Wallis one-way ANOVA was used to test the difference in dimensional change in tooth-missing site among age subgroups. RESULTS The mean dimensional change in the tooth-missing site was -37.62 ± 106.36 μm (median: -28.33 μm, Q25 -72.65/Q75 38.97) mesial-distally and -67.91 ± 42.37 μm (median: -61.50 μm, Q25 -88.25/Q75 -36.75) occlusal-gingivally. Eighteen out of 40 mesial neighboring teeth and 24 out of 40 distal neighboring teeth showed migration towards the implants. When patients were grouped according to age, the mesial-distal reduction in the tooth-missing site was significantly larger in patients younger than 30 years compared with those older than 50 years (p < .05). CONCLUSIONS The dimensions of posterior tooth-missing sites decreased over an observation period of 3 months.
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Affiliation(s)
- Danni Guo
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, Beijing, China
| | - Shaoxia Pan
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, Beijing, China
| | - Sven Mühlemann
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, Beijing, China
| | - Ronald E Jung
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
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Alqadasi B, Xia HY, Alhammadi MS, Hasan H, Aldhorae K, Halboub E. Three-dimensional assessment of accelerating orthodontic tooth movement-micro-osteoperforations vs piezocision: A randomized, parallel-group and split-mouth controlled clinical trial. Orthod Craniofac Res 2020; 24:335-343. [PMID: 33124098 DOI: 10.1111/ocr.12437] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/29/2020] [Accepted: 10/22/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To compare the effects of micro-osteoperforations (MOPs) vs piezocision (Piezo) in accelerating orthodontic tooth movement in adults. SETTING AND SAMPLE POPULATION In this randomized, single-blinded, parallel-group, split-mouth clinical trial, 24 patients aged 15-40 years were recruited. SUBJECTS AND METHODS Patients were randomly allocated into two groups: MOPs and Piezo groups. One side of the maxilla was allocated randomly for treatment with one of these techniques, and the other side was treated conventionally to act as a split-mouth control. The rate of canine retraction was evaluated up to 3 months by three-dimensional digital models using a conventional labial appliance. Root resorption and bone height were evaluated using cone beam computed tomography. RESULTS The MOPs and Piezo groups showed a significantly higher rate of tooth movement after 3 months on the experimental sides than the control sides. However, the net movements in the MOPs and Piezo groups did not reveal a higher rate of tooth movement. Similarly, the overall net movement was -0.32 ± 1.14 and -0.55 ± 0.89 mm for MOPs and Piezo, respectively (P = .606). Regarding root resorption, the overall changes in intra- or intergroup comparisons were insignificant. Decreased canine palatal bone height was reported on the experimental side of the Piezo group (P = .015) after 3 months, but the overall changes were insignificant. CONCLUSIONS The effect of MOPs and Piezo techniques in accelerating the orthodontic canine retraction was comparable to each other, and to the conventional methods. Neither technique caused root resorption or increased vertical bone loss.
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Affiliation(s)
- Basema Alqadasi
- Department of Orthodontics, Hospital of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hou Yu Xia
- Department of Orthodontics, Hospital of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Maged Sultan Alhammadi
- Department of Preventive Dental Sciences, Division of Orthodontics and Dentofacial Orthopedics, College of Dentistry, Jazan University, Jazan, Saudi Arabia.,Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Ibb University, Ibb, Yemen
| | - Hadeel Hasan
- College of Dentistry, Sana'a University, Sana'a, Yemen
| | - Khalid Aldhorae
- Orthodontic Department, College of Dentistry, Thamar University, Thamar, Yemen
| | - Esam Halboub
- Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia.,Department of Oral Medicine, Oral Pathology and Oral Radiology, Faculty of Dentistry, Sana'a University, Sana'a, Yemen
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Yang F, Wang XX, Li J, Nie FJ, Cui Q, Fu YJ, Zhang J. The effects of binge alcohol exposure on tooth movement and associated root resorption in rats. Alcohol 2020; 88:1-9. [PMID: 32574660 DOI: 10.1016/j.alcohol.2020.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 06/03/2020] [Accepted: 06/11/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Considering the increasing prevalence of alcohol use and the growing number of orthodontic patients, some orthodontic patients might engage in binge drinking during treatment. Nevertheless, little is known about the effect of alcohol use on orthodontic treatment. METHODS Male Wistar rats were divided into ethanol and control groups (n = 32). The rats received a single daily intraperitoneal injection of 20% (vol/vol) ethanol/saline solution at a dose of 3 g/kg of ethanol or saline for three consecutive days, and no injection was given during the remaining four days each week. All rats received orthodontic appliances to draw the maxillary first molar mesially. The rats were sacrificed at days 14 and 28, respectively. The amount of tooth movement was measured. Root resorption area was evaluated by scanning electron microscope. Hematoxylin and eosin (H&E) staining and tartrate-resistant acid phosphatase (TRAP) staining were conducted. Immunohistochemistry staining was performed to evaluate the expressions of nuclear factor kappa B ligand (RANKL), osteoprotegerin (OPG), and inducible nitric oxide synthase (iNOS). RESULTS There were no significant differences in tooth movement and root resorption between ethanol and control groups. The number of TRAP-positive cells was significantly higher in the ethanol group. The expression of RANKL was statistically increased in the ethanol group. In contrast, the expression of OPG was remarkably decreased in rats injected with ethanol. Moreover, the iNOS level was significantly up-regulated in the ethanol group. CONCLUSION The tooth movement and root resorption in rats were not affected by binge alcohol exposure.
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Affiliation(s)
- Fan Yang
- Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong Province, China; Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China
| | - Xu Xia Wang
- Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong Province, China; Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China
| | - Jing Li
- Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong Province, China; Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China
| | - Fu Jiao Nie
- Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong Province, China; Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China
| | - Qun Cui
- Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong Province, China; Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China
| | - Ya Jing Fu
- Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong Province, China; Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China
| | - Jun Zhang
- Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong Province, China; Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, Shandong Province, China.
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Abstract
Objective This study investigated the inhibitory effect of baicalin on orthodontically
induced inflammatory root resorption in rats. Methods Forty-five male Wistar rats were randomly divided into three groups of 15
rats each. Fifty grams of force was used to establish an orthodontic tooth
movement model. Baicalin (40 mg/kg) was locally injected into rats in the
baicalin group at 3-day intervals; concurrently, normal saline was injected
into rats in the negative control group. On the 21st day after orthodontic
treatment, the tooth movement distance and root resorption area ratio were
measured. Histomorphology changes were observed by hematoxylin and eosin
staining and immunohistochemistry. Results There was no significant difference in tooth movement distance between
groups. The root resorption area ratio was significantly lower in the
baicalin group than in the negative control group. Runx-2 expression was
significantly higher in the baicalin group than in the negative control
group, while tumor necrosis factor (TNF)-α expression was significantly
lower in the baicalin group than in the negative control group. Conclusions Baicalin inhibits orthodontically induced inflammatory root resorption by
enhancing the expression of Runx-2 and reducing the expression of TNF-α, but
does not affect tooth movement distance.
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Affiliation(s)
- Peng Lin
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Xin-Xing Guo
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Yi-Ling Wang
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Zhu-Liang Wei
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Hai-Yan Xin
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Tong-Bin Liu
- Department of Prosthodontics, Binzhou Medical University Hospital, Binzhou, P.R. China
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Yamashiro K, Ideguchi H, Aoyagi H, Yoshihara-Hirata C, Hirai A, Suzuki-Kyoshima R, Zhang Y, Wake H, Nishibori M, Yamamoto T, Takashiba S. High Mobility Group Box 1 Expression in Oral Inflammation and Regeneration. Front Immunol 2020; 11:1461. [PMID: 32760399 PMCID: PMC7371933 DOI: 10.3389/fimmu.2020.01461] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 06/04/2020] [Indexed: 12/14/2022] Open
Abstract
High mobility group box 1 (HMGB1) is a non-histone DNA-binding protein of about 30 kDa. It is released from a variety of cells into the extracellular milieu in response to inflammatory stimuli and acts on specific cell-surface receptors, such as receptors for advanced glycation end-products (RAGE), Toll-like receptor (TLR)2, TLR4, with or without forming a complex with other molecules. HMGB1 mediates various mechanisms such as inflammation, cell migration, proliferation, and differentiation. On the other hand, HMGB1 enhances chemotaxis acting through the C-X-C motif chemokine ligand (CXCL)12/C-X-C chemokine receptor (CXCR)4 axis and is involved in regeneration. In the oral cavity, high levels of HMGB1 have been detected in the gingival tissue from periodontitis and peri-implantitis patients, and it has been shown that secreted HMGB1 induces pro-inflammatory cytokine expression, such as interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α, which prolong inflammation. In contrast, wound healing after tooth extraction or titanium dental implant osseointegration requires an initial acute inflammation, which is regulated by secreted HMGB1. This indicates that secreted HMGB1 regulates angiogenesis and bone remodeling by osteoclast and osteoblast activation and promotes bone healing in oral tissue repair. Therefore, HMGB1 can prolong inflammation in the periodontal tissue and, conversely, can regenerate or repair damaged tissues in the oral cavity. In this review, we highlight the role of HMGB1 in the oral cavity by comparing its function and regulation with its function in other diseases. We also discuss the necessity for further studies in this field to provide more specific scientific evidence for dentistry.
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Affiliation(s)
- Keisuke Yamashiro
- Department of Periodontics and Endodontics, Okayama University Hospital, Okayama, Japan
| | - Hidetaka Ideguchi
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroaki Aoyagi
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Chiaki Yoshihara-Hirata
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Anna Hirai
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Risa Suzuki-Kyoshima
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yao Zhang
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hidenori Wake
- Department of Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Masahiro Nishibori
- Department of Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Tadashi Yamamoto
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Shogo Takashiba
- Department of Pathophysiology-Periodontal Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Yang H, Shan D, Jin Y, Liang H, Liu L, Guan Y, Chen C, Luo Q, Yang Y, Lai W, Long H. The Role of Acid-sensing Ion Channel 3 in the Modulation of Tooth Mechanical Hyperalgesia Induced by Orthodontic Tooth Movement. Neuroscience 2020; 442:274-85. [PMID: 32592826 DOI: 10.1016/j.neuroscience.2020.06.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 02/05/2023]
Abstract
This study aimed to explore the role of acid-sensing ion channel 3 (ASIC3) in the modulation of tooth mechanical hyperalgesia induced by orthodontic tooth movement. In male Sprague-Dawley rats, closed coil springs were ligated between mandibular incisors and molars to mimic orthodontic tooth movement. Bite force was assessed to evaluate tooth mechanical hyperalgesia. The alveolar bone, trigeminal ganglia, and trigeminal nucleus caudalis underwent immunohistochemical staining and immunoblotting for ASIC3. The inferior alveolar nerves were transected to explore the interaction between the periodontal sensory endings and trigeminal ganglia. The role of ASIC3 in trigeminal ganglia was further explored with lentivirus-mediated ASIC3 ribonucleic acid interference. Results showed that ASIC3 was expressed in the periodontal Ruffini endings and expression of ASIC3 protein was elevated in periodontal tissues, trigeminal ganglia, and trigeminal nucleus caudalis, following orthodontic tooth movement. ASIC3 agonists and antagonists significantly aggravated and mitigated tooth mechanical hyperalgesia, respectively. ASIC3 expression decreased after inferior alveolar nerve transection in periodontal tissues. Both in vitro and vivo, the lentivirus vector carrying ASIC3 shRNA inhibited ASIC3 expression and relieved tooth mechanical hyperalgesia. To conclude, ASIC3 is important in the modulation of tooth mechanical hyperalgesia induced by orthodontic tooth movement. Further, the role of ASIC3 in the modulation of pain in periodontal tissues is regulated by trigeminal ganglia. An adjuvant analgesic therapy targeting ASIC3 could alleviate orthodontic movement-associated mechanical hyperalgesia in rats.
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