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Pachiou A, Karakostas P, Roulias P, Naka O. Clinical parameters that affect performance and patient satisfaction of root-retained overdentures: A systematic review of randomised controlled clinical trials. Gerodontology 2024. [PMID: 38247020 DOI: 10.1111/ger.12739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/01/2024] [Indexed: 01/23/2024]
Abstract
OBJECTIVE To evaluate clinical parameters that affect the performance of root-supported overdentures (ROD) and to identify the possible factors that may affect it. BACKGROUND ROD still serve as an alternative and successful treatment plan nowadays for partially edentulous patients. Nonetheless, there is not yet conclusive evidence about their clinical evaluation. MATERIALS AND METHODS A search strategy was developed following a PIO (Population, Intervention, Outcome) framework including an electronic search in the following databases: PubMed, Cochrane Library and Scopus. The systematic search included only randomised controlled clinical trials (RCTs), published until January 2023 in English language and was performed by two independent reviewers. Quality assessment of the included studies was conducted according to the Cochrane Risk of Bias tool. RESULTS The final selection of studies included 11 RCTs. Clinically relevant variables derived from this search were: Complications, with caries being the most frequently reported, periodontal aspects and bone changes around abutment teeth. Additionally, methods and clinical suggestions for the maintenance of these restorations and patient-related outcomes were assessed. According to the risk of bias assessment, nine studies were considered of high risk, whereas only 2 of low risk. A meta-analysis was not feasible. CONCLUSION Within the limitations of this systematic review, ROD remain a viable treatment plan, offering better denture stability and bone preservation around abutment teeth and high patient satisfaction. Thorough oral hygiene and regular follow-ups are of utmost importance. Further well-designed RCTs are necessary for firmer conclusions.
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Affiliation(s)
- Aspasia Pachiou
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiotis Karakostas
- Department of Preventive Dentistry, Periodontology and Implant Biology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Panagiotis Roulias
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Olga Naka
- Department of Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Bruhnke M, Voß I, Sterzenbach G, Beuer F, Naumann M. Evaluating the prospective crown-root ratio after extrusion and crown lengthening procedures in vitro. Sci Rep 2023; 13:18899. [PMID: 37919362 PMCID: PMC10622524 DOI: 10.1038/s41598-023-46354-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 10/31/2023] [Indexed: 11/04/2023] Open
Abstract
For restoration of extensively damaged teeth preprosthetic treatment measures are necessary. Crown lengthening and extrusion affect the prospective crown-root ratio (CRR). The subject of this in vitro study was to compute CRRs for both treatment approaches. 120 human maxillary central extracted incisors were measured. Measurements were calculated for five treatment groups: C (control), E-2 mm (extrusion of 2 mm), E-4 mm (extrusion of 4 mm), CL-2 mm (crown lengthening of 2 mm), and CL-4 mm (crown lengthening of 4 mm). Tooth (TL), root (RL), and crown lengths (CL) were measured from mesial (m) and facial (f) cemento-enamel junction (CEJ), and respective anatomic (CRR) and effective crown-root ratios (eCRR) were calculated. Following CRR values were computed for C: CRR-m = 0.4 ± 0.1, CRR-f = 0.7 ± 0.1. All crown-root ratios were lower (more favourable) for extrusion compared to crown lengthening (p < 0.001). ECRRs were higher than anatomic CRRs. CRR at mesial CEJ was significantly lower than CRR with facial CEJ as reference (p < 0.001). Mesial measurement-based calculations of CRR typically based on radiographic images should be interpreted with caution as they underestimate the eCRR. CRR can be expected as lower, i.e. more favourable, when teeth are extruded than crown lengthened.
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Affiliation(s)
- Maria Bruhnke
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin and Berlin Institute of Health, Aßmannshauser Straße 4-6, 14197, Berlin, Germany.
| | - Isabelle Voß
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin and Berlin Institute of Health, Aßmannshauser Straße 4-6, 14197, Berlin, Germany
| | - Guido Sterzenbach
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin and Berlin Institute of Health, Aßmannshauser Straße 4-6, 14197, Berlin, Germany
| | - Florian Beuer
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin and Berlin Institute of Health, Aßmannshauser Straße 4-6, 14197, Berlin, Germany
| | - Michael Naumann
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin and Berlin Institute of Health, Aßmannshauser Straße 4-6, 14197, Berlin, Germany
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Naumann M, Adali U, Rosentritt M, Happe A, Frankenberger R, Sterzenbach G. Effect of apical root resection, orthodontic extrusion, and surgical crown lengthening on load capability. Clin Oral Investig 2023; 27:4379-4387. [PMID: 37162571 PMCID: PMC10415504 DOI: 10.1007/s00784-023-05057-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 04/30/2023] [Indexed: 05/11/2023]
Abstract
OBJECTIVES This study aims to investigate the load-to-fracture of procedures changing crown-to-root ratio (RCRR) aimed to restore severely damaged upper central incisors to avoid tooth extraction compared to implant placement. There is no evidence on load capability after apical root resection (AR), orthodontic extrusion (OE), and surgical crown lengthening (SCL) in respect to RCRR, respectively. MATERIAL AND METHODS Human maxillary central incisors were endodontically treated, decoronated, and divided into 4 groups (n = 48). The following specimen preparation was performed: (I) adhesive core-and-post build-up (control), (II) as (I) and 2 mm apical root resection (AR), (III) before adhesive core-and-post build-up teeth were shortened 2 mm coronally (OE) (IV) as (I), but specimens were embedded 4 mm instead of 2 mm below the CEJ (SCL), group (V) implant-borne restoration with individual all-ceramic abutments (n = 12; ∅4.1/l = 12 mm) (IBR). All specimens received all-ceramic crowns, thermo-mechanical (TML), and subsequent linear loading (LL) until failure. RCRR were calculated and log-rank, Kruskal-Wallis, Mann-Whitney U, ANOVA, and chi-square tests applied (p = 0.05). RESULTS Fracture loads after subsequent LL differed significantly (p = 0.001) between groups, while implants showed the highest values. Fmax median (min/max) were as follows: (I) 252 (204/542), (II) 293 (243/443), (III) 253 (183/371), (IV) 195 (140/274), and (V) 446 (370/539). Pair-wise comparison showed significant differences (p = 0.001) between group I/IV and group V, I, and IV (p = 0.045), II and IV (p = 0.001), and III compared to IV (p = 0.033), respectively. RCRR below 1 significantly increased load capability compared to RCRR = 1. CONCLUSIONS OE appears to preferably ensure biomechanical stability of teeth that are endodontically treated and receive core-and-post and crown placement compared to SCL. AR has no adverse biomechanical impact. RCRR < 1 is biomechanically beneficial. CLINICAL RELEVANCE For endodontically treated and restored teeth, orthodontic extrusion should be preferred compared to surgical crown lengthening prior single-crown restoration. As orthodontic extrusion, apical root resection has no adverse effect on load capability. Single-crown implant-borne restorations are most load capable.
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Affiliation(s)
- M Naumann
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular, Disorders, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany.
| | - U Adali
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular, Disorders, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - M Rosentritt
- Department of Prosthetic Dentistry, Regensburg University Medical Center, Regensburg, Germany
| | - A Happe
- Department of Prosthetic Dentistry, University of Ulm, Ulm, Germany
| | - R Frankenberger
- Department of Operative Dentistry and Endodontology, University of Marburg, Georg-Voigt-Str. 3, 35039, Marburg, Germany
| | - G Sterzenbach
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular, Disorders, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
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Watanabe C, Wada J, Mizutani K, Nagayama T, Uchida H, Shibata Y, Wakabayashi N. Radiographic predictive factors for 10-year survival of removable partial denture abutment teeth: Alveolar bone level and density. J Prosthodont Res 2023; 67:437-443. [PMID: 36418082 DOI: 10.2186/jpr.jpr_d_22_00034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
PURPOSE To determine postoperative periodontal and radiographic factors that predict the survival rates of abutments of removable partial dentures (RPDs). METHODS Patients who wore RPDs for > 10 years and received supportive periodontal therapy were included. Periodontal examinations and radiographic assessments were conducted on 83 abutment teeth in 35 patients at baseline, and five years after RPD insertion. In addition to conventional factors, such as tooth mobility at 5 years, radiographic factors, such as the crown-root ratio (ΔCR ratio) and gray-level changes reflecting changes in alveolar bone density (ΔABD), were evaluated. The impact of the covariables on the 10-year survival of abutment teeth was estimated using a multivariate Cox regression model, considering multicollinearity. RESULTS Patients were classified as having A2-B2 (45.7%) and B3-C2 (54.3%) tooth loss, according to the Eichner classification. A probing depth ≥ 4 mm, tooth mobility ≥ grade 1, and CR ratio ≥ 1 were found in 30.1%, 33.7%, and 51.8% of abutment teeth, respectively. The 10-year survival rate of abutment teeth was 86.7%. Multivariate analysis showed that the 10-year survival of abutment teeth was significantly associated with root canal treatment (P = 0.045, hazard ratio [HR] = 1.23), the 5-year ΔCR ratio (P = 0.022, HR = 3.20), and ΔABD on the edentulous side of the abutment teeth (P = 0.047, HR = 1.08). CONCLUSIONS In addition to root canal treatment, changes in the CR ratio and radiographic alveolar bone density at five years predicted the long-term survival rate of RPD abutments.
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Affiliation(s)
- Chie Watanabe
- Department of Conservative Dentistry, Division of Biomaterials and Engineering, Showa University School of Dentistry, Tokyo, Japan
| | - Junichiro Wada
- Department of Advanced Prosthodontics, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Koji Mizutani
- Department of Periodontology, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Tomiharu Nagayama
- Department of Advanced Prosthodontics, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Hirofumi Uchida
- Department of Advanced Prosthodontics, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Yo Shibata
- Department of Conservative Dentistry, Division of Biomaterials and Engineering, Showa University School of Dentistry, Tokyo, Japan
| | - Noriyuki Wakabayashi
- Department of Advanced Prosthodontics, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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Alshabib A, Abid Althaqafi K, AlMoharib HS, Mirah M, AlFawaz YF, Algamaiah H. Dental Fiber-Post Systems: An In-Depth Review of Their Evolution, Current Practice and Future Directions. Bioengineering (Basel) 2023; 10:bioengineering10050551. [PMID: 37237621 DOI: 10.3390/bioengineering10050551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
The field of dental medicine is constantly evolving and advancing toward minimally invasive techniques. Several studies have demonstrated that bonding to the tooth structure, particularly enamel, yields the most predictable results. In some instances, however, significant tooth loss, pulpal necrosis, or irreversible pulpitis may limit the options available to the restorative dentist. In these cases, placement of a post and core followed by a crown is the preferred treatment option, provided all requirements are met. This literature review provides an overview of the historical development of dental FRC post systems as well as a comprehensive examination of the currently available posts and their bonding requirements. In addition, it offers valuable insights for dental professionals seeking to understand the current state of the field and the prospects of dental FRC post systems.
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Affiliation(s)
- Abdulrahman Alshabib
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Khaled Abid Althaqafi
- Department of Restorative Dental Department, College of Dentistry, University of Umm Al Qura, Makkah 24211, Saudi Arabia
| | - Hani S AlMoharib
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Mahir Mirah
- Department of Restorative Dental Science, Dental College, and Hospital, Taibah University, Madinah 42353, Saudi Arabia
| | - Yasser F AlFawaz
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Hamad Algamaiah
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
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Calvert G, Cocozza PG, Elsayed Ahmed K. Clinical factors to consider in definitive treatment planning for patients with tooth wear. Br Dent J 2023; 234:375-384. [PMID: 36964358 DOI: 10.1038/s41415-023-5618-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 03/26/2023]
Abstract
Diagnosis, disease control and prevention are the precursors to successful definitive restorative treatment of pathological tooth wear. This case series illustrates how proposed key clinical features can influence treatment complexity and provide the clinician with a logical sequence of treatment options for definitive management of tooth wear.
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Affiliation(s)
- Gareth Calvert
- Glasgow Dental Hospital and School, Department of Restorative Dentistry, Glasgow, G2 3JZ, UK
| | - Paul Guerino Cocozza
- Glasgow Dental Hospital and School, Department of Restorative Dentistry, Glasgow, G2 3JZ, UK.
| | - Khaled Elsayed Ahmed
- School of Medicine and Dentistry, Griffith University, Queensland, 4215, Australia
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Mannocci F, Bitter K, Sauro S, Ferrari P, Austin R, Bhuva B. Present status and future directions: The restoration of root filled teeth. Int Endod J 2022; 55 Suppl 4:1059-1084. [PMID: 35808836 PMCID: PMC9796050 DOI: 10.1111/iej.13796] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 12/30/2022]
Abstract
This narrative review will focus on a number of contemporary considerations relating to the restoration of root filled teeth and future directions for research. Clinicians are now more than ever, aware of the interdependence of the endodontic and restorative aspects of managing root filled teeth, and how these aspects of treatment are fundamental to obtaining the best long-term survival. To obtain the optimal outcomes for patients, clinicians carrying out endodontic treatment should have a vested interest in the restorative phase of the treatment process, as well as an appreciation for the structural and biomechanical effects of endodontic-restorative procedures on restoration and tooth longevity. Furthermore, the currently available research, largely lacks appreciation of occlusal factors in the longevity of root filled teeth, despite surrogate outcomes demonstrating the considerable influence this variable has. Controversies regarding the clinical relevance of minimally invasive endodontic and restorative concepts are largely unanswered with respect to clinical data, and it is therefore, all too easy to dismiss these ideas due to the lack of scientific evidence. However, conceptually, minimally invasive endodontic-restorative philosophies appear to be valid, and therefore, in the pursuit of improved clinical outcomes, it is important that the efficacies of these treatment protocols are determined. Alongside an increased awareness of the preservation of tooth structure, developments in adhesive bonding, ceramic materials and the inevitable integration of digital dentistry, there is also a need to evaluate the efficacy of new treatment philosophies and techniques with well-designed prospective clinical studies.
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Affiliation(s)
- Francesco Mannocci
- Department of EndodonticsFaculty of Dentistry, Oral and Craniofacial SciencesKing's College LondonLondonUK
| | - Kerstin Bitter
- Department of Operative and Preventive DentistryCharité ‐ University Medicine BerlinBerlinGermany
| | - Salvatore Sauro
- Departamento de Odontología, Facultad de Ciencias de la SaludUniversidad CEU‐Cardenal Herrera ValenciaAlfara del PatriarcaSpain
| | - Paolo Ferrari
- Department of Operative DentistryUniversity of ParmaParmaItaly
| | - Rupert Austin
- Department of ProsthodonticsFaculty of Dentistry, Oral and Craniofacial SciencesKing's College LondonLondonUK
| | - Bhavin Bhuva
- Department of EndodonticsFaculty of Dentistry, Oral and Craniofacial SciencesKing's College LondonLondonUK
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Abdelfattah Mohamed AM, El Homossany MEMB, Abdelmoniem SM, Abdelrahman TY. Comparison of tensile bond strength of ball attachments made of different materials to root canal dentin after chewing simulation. BMC Oral Health 2022; 22:254. [PMID: 35751090 PMCID: PMC9229525 DOI: 10.1186/s12903-022-02282-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/10/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Debonding of ball attachments is one of the complications that annoy teeth supported overdenture wearers. The polyetheretherketone (PEEK) and polyetherketoneketone (PEKK) polymers are widely applied in the dental field. The purpose of the current study was to compare the tensile bond strength of ball attachments made of such materials and the commonly used titanium ones after 5 years of overdenture insertion and removal (5000 cycles) in addition to chewing simulation (1,200,000 cycle). METHODS Extracted mandibular canines (N = 60) were randomly allocated into three groups and received ball attachments; titanium (group TI; N = 20), PEEK (group PE; N = 20), PEKK (group PK; N = 20). In each group, the samples were divided into two subgroups whereas tensile bond strength was measured pre aging (T0; n = 10) and post aging (T1; n = 10). Tensile bond strength was measured by the Pull out test using the Universal testing machine. Failure mode analysis was determined by examination of the samples' surfaces under 65X stereomicroscope. The resulting data followed normal distribution and the significance level was set at (α = 0.05). RESULTS One Way Anova showed statistically significant difference between the three groups (P < .00001). PostHoc Tukey test showed statistically significant difference between the groups TI and PE, TI and PK and no statistically significant difference between the groups PE and PK. Paired t test showed statistically significant difference in the tensile bond strength pre and post aging in each group. CONCLUSIONS PEEK and PEKK ball attachments could be concluded to have a higher tensile bond strength compared to the titanium ones when bonded to root dentin. Tensile bond strength of such attachments may decrease with aging as well. Clinically, the higher tensile bond strength may have a lesser rate of debonding and thus reduced patient apprehension.
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Affiliation(s)
- Ahmed Mostafa Abdelfattah Mohamed
- Oral and Maxilofacial Prosthodontics Department, Faculty of Dentistry, AinShams University, Organization of African Unity Street, Cairo, 11561, Egypt.
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Ma J, Furuta M, Uchida K, Takeshita T, Kageyama S, Asakawa M, Takeuchi K, Suma S, Sakata S, Hata J, Sohn W, Ninomiya T, Yamashita Y. Yogurt product intake and reduction of tooth loss risk in a Japanese community. J Clin Periodontol 2022; 49:345-352. [PMID: 35066918 PMCID: PMC9305141 DOI: 10.1111/jcpe.13593] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/09/2021] [Accepted: 01/13/2022] [Indexed: 12/01/2022]
Abstract
Aim To evaluate the longitudinal association between yogurt product intake and oral health in a population‐based study. Materials and Methods This study included 1967 Japanese residents aged 40–79 years who underwent dental examinations in 2012. Among them, 1469 participants were followed up in 2017 for the incidence of tooth loss, which was defined as two or more teeth lost over 5 years. The intake of yogurt products, defined as yogurt and lactic acid beverages, was estimated using a semi‐quantitative food frequency questionnaire. The composition of the salivary microbiota was evaluated. Results The Poisson regression model showed that a higher intake of yogurt products was negatively associated with the incidence of tooth loss (p for trend = .020), adjusted for potential confounding factors. Mediation analysis confirmed that periodontal condition partly mediated the effect of yogurt product intake on tooth loss, while dental caries experience did not. Additionally, we confirmed the association of a high intake of yogurt products with a low percentage of the salivary microbiota pattern, which was associated with poor oral health. Conclusion These findings suggest that the intake of yogurt products is associated with a lower risk of tooth loss resulting from periodontal disease, probably via modulation of the oral microbiome composition.
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Affiliation(s)
- Jiale Ma
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Michiko Furuta
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Kazuhiro Uchida
- Department of Health Promotion, School of Health and Nutrition Science, Nakamura-Gakuin University, Fukuoka, Japan
| | - Toru Takeshita
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,OBT Research Center, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Shinya Kageyama
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Mikari Asakawa
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Kenji Takeuchi
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.,Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Shino Suma
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Satoko Sakata
- Department of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Jun Hata
- Department of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Woosung Sohn
- Discipline of Population Oral Health, University of Sydney School of Dentistry, Faculty of Medicine and Health, Sydney, Australia
| | - Toshiharu Ninomiya
- Department of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihisa Yamashita
- Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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10
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Yamada R, Nogawa T, Takayama Y, Iwata K, Saito M, Yokoyama A. Comparison of the prognosis of the remaining teeth between implant-supported fixed prostheses and removable partial dentures in partially edentulous patients: A retrospective study. Clin Implant Dent Relat Res 2022; 24:83-93. [PMID: 35019228 DOI: 10.1111/cid.13064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/21/2021] [Accepted: 12/24/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND There have been several reports about the prognosis of teeth adjacent to edentulous spaces for implant-supported fixed prostheses (ISFPs) and removable partial dentures (RPDs). However, there are few reports about the prognosis of the other remaining teeth comparing ISFPs with RPDs. PURPOSE The aim of this study was to evaluate and compare the prognosis of the remaining teeth for ISFPs and RPDs in terms of survival and complication-free rates. METHODS Subjects were partially edentulous patients with ISFPs or RPDs inserted in 2003-2016. Teeth adjacent to edentulous spaces (A-teeth), teeth not adjacent to edentulous spaces (R-teeth), and teeth opposing edentulous spaces (O-teeth) were investigated. The endpoints were tooth extraction and complications. A multivariate cox regression model was used to estimate the risk factors for survival of the investigated teeth. RESULTS A total of 233 (ISFP: 89, RPD: 144) patients were included in the statistical analyses. An IFSP prosthesis, when compared to an RPD prosthesis did not significantly decrease the tooth loss rate for A-teeth (hazard ratio [HR]: 0.76; 95% confidence interval [CI]: 0.30-1.92), for R-teeth (HR: 0.54; 95% CI: 0.28-1.05), or for O-teeth (HR: 0.45; 95% CI: 0.10-2.09). CONCLUSIONS In partially edentulous spaces, the difference between ISFPs and RPDs does not affect the prognosis of teeth adjacent to edentulous spaces, teeth not adjacent to edentulous spaces, and teeth opposing edentulous spaces. Namely, our findings suggest that it depends largely on the tooth type, jaw, endodontic therapy performed, not on the type of prostheses.
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Affiliation(s)
- Ryo Yamada
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Toshifumi Nogawa
- Department of Preventive Dentistry, Hokkaido University Hospital Sapporo, Sapporo, Hokkaido, Japan
| | - Yoshiyuki Takayama
- Department of Oral Rehabilitation, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Kai Iwata
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Faculty of Dental Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Masayasu Saito
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Faculty of Dental Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Atsuro Yokoyama
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Faculty of Dental Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
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11
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Association between Smoking during Pregnancy and Short Root Anomaly in Offspring. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182111662. [PMID: 34770175 PMCID: PMC8582870 DOI: 10.3390/ijerph182111662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/01/2021] [Accepted: 11/02/2021] [Indexed: 12/18/2022]
Abstract
Short root anomaly (SRA) is a dental anomaly with short dental roots and its pathogenesis is poorly understood. This study investigated the association between maternal smoking during pregnancy and SRA in offspring. A survey was conducted on 558 children aged 8–16 years from two public schools in Ulaanbaatar, Mongolia. SRA was diagnosed using cases with a root-crown ratio of maxillary central incisors of ≤1.0. A questionnaire survey was conducted to assess maternal lifestyle habits. Multiple logistic regression was used to analyse the association between maternal smoking during pregnancy and SRA in offspring after adjusting for possible confounders. The prevalence of SRA in these children was 14.2%. Children whose mothers smoked from pregnancy to date were found to be 4.95 times (95% confidence interval [CI]: 1.65–14.79) more likely to have SRA than those whose mothers never smoked, after adjusting for possible confounders. Additionally, children whose mothers had been exposed to passive smoking during pregnancy were found to be 1.86 times (95% CI: 1.02–3.40) more likely to have SRA than those whose mothers had not been exposed to passive smoke. Our population-based study suggests that maternal and passive smoking exposure during pregnancy can affect tooth root formation in children.
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Stalder A, Berger CH, Buser R, Wittneben J, Schimmel M, Abou-Ayash S. Biological and technical complications in root cap-retained overdentures after 3-15 years in situ: a retrospective clinical study. Clin Oral Investig 2021; 25:2325-2333. [PMID: 32895768 PMCID: PMC7966125 DOI: 10.1007/s00784-020-03555-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 08/27/2020] [Indexed: 10/25/2022]
Abstract
OBJECTIVES This retrospective clinical study investigates the frequency of biological and technical complications in patients rehabilitated by natural root-retained overdentures (RODs) with cast post-and-cores (root caps) wearing precision attachments and analyses factors influencing complication rates (e.g. oral hygiene routines). MATERIALS AND METHODS Patients formerly treated with RODs were invited for a cost-free clinical visit to evaluate their intraoral status. Furthermore, they were interviewed and patient records were screened for complications occurring since denture delivery. Statistical models include descriptive analyses, Fisher's exact test, odds ratios, and a multivariate regression model. RESULTS A total of 114 patients wearing 128 RODs with a total of 280 abutment teeth were evaluated (mean service time: 7.9 years). Technical complications occurred in 68.8% of the RODs, with matrix loosening being the most frequent complication (50.1%). Biological complications occurred in 53.9% of all RODs, with the presence of denture stomatitis being the most common biological complication (38.3%). The presence of denture stomatitis was significantly higher in the maxilla relative to the mandible (p = 0.0029), in subjects cleaning their dentures less than twice a day (p < 0.001), in subjects regularly using CHX-containing products (p = 0.036) and in subjects with a plaque index > 40% (p < 0.001). CONCLUSIONS Root cap-retained overdentures with precision attachments are a viable treatment option in partially dentate subjects, even over long-term periods. However, high complication rates should be expected. CLINICAL RELEVANCE Establishing good oral hygiene is a decisive factor in preventing complications in RODs. Furthermore, CHX-containing products may not be recommended for routine domestic use.
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Affiliation(s)
- Anja Stalder
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Camille Henriette Berger
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Ramona Buser
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Julia Wittneben
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Martin Schimmel
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Division of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland
| | - Samir Abou-Ayash
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland.
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13
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Takahashi T, Nozaki K, Gonda T, Ikebe K. A system for designing removable partial dentures using artificial intelligence. Part 1. Classification of partially edentulous arches using a convolutional neural network. J Prosthodont Res 2020; 65:115-118. [PMID: 32938860 DOI: 10.2186/jpr.jpor_2019_354] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE The purpose of this study was to develop a method for classifying dental arches using a convolutional neural network (CNN) as the first step in a system for designing removable partial dentures. METHODS Using 1184 images of dental arches (maxilla: 748 images; mandible: 436 images), arches were classified into four arch types: edentulous, intact dentition, arches with posterior tooth loss, and arches with bounded edentulous space. A CNN method to classify images was developed using Tensorflow and Keras deep learning libraries. After completion of the learning procedure, the diagnostic accuracy, precision, recall, F-measure and area under the curve (AUC) for each jaw were calculated for diagnostic performance of learning. The classification was also predicted using other images, and percentages of correct predictions (PCPs) were calculated. The PCPs were compared with the Kruskal-Wallis test (p = 0.05). RESULTS The diagnostic accuracy was 99.5% for the maxilla and 99.7% for the mandible. The precision, recall, and F-measure for both jaws were 0.25, 1.0 and 0.4, respectively. The AUC was 0.99 for the maxilla and 0.98 for the mandible. The PCPs of the classifications were more than 95% for all types of dental arch. There were no significant differences among the four types of dental arches in the mandible. CONCLUSIONS The results of this study suggest that dental arches can be classified and predicted using a CNN. Future development of systems for designing removable partial dentures will be made possible using this and other AI technologies.
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Affiliation(s)
- Toshihito Takahashi
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry
| | - Kazunori Nozaki
- Division of Medical Information, Osaka University Dental Hospital
| | - Tomoya Gonda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry
| | - Kazunori Ikebe
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry
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14
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Huang S, Chen PhD Y, Chen PhD Z. Relationship Between Crown to Root Ratio and Alveolar Bone Support in Patients With Unilateral Cleft Lip and Alveolus. Cleft Palate Craniofac J 2020; 58:215-221. [PMID: 32808559 DOI: 10.1177/1055665620950155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES To evaluate the tooth lengths, crown to root ratios (CRRs), and alveolar bone support (ABS) around cleft-adjacent maxillary central incisors (U1s) in patients with unilateral cleft lip and alveolus (UCLA) and to investigate the relationships between CRR and ABS. DESIGN This is a retrospective study. SETTING Cleft Lip and Palate Care Center of Shanghai Ninth People's Hospital, Shanghai, China. PATIENTS Fifty-eight Chinese patients with UCLA. MAIN OUTCOME MEASURE Cone beam computed tomography data from 58 nonsyndromic patients with UCLA (36 males, 22 females; mean age = 12.65 ± 3.64 years) were evaluated. Crown length and root length, alveolar bone thickness (ABT), and the distances between the cementoenamel junction and alveolar bone crest on 4 surfaces of cleft-adjacent U1 were measured and compared with those of noncleft side in the same patients. Crown to root ratio and frequency of dehiscence were calculated and comparisons were also made between cleft and noncleft sides. Regression analysis was performed to explore the association between CRR and ABS. RESULTS The CRR of cleft-adjacent U1 and alveolar bone crest heights (ACHs) on the 4 surfaces were significantly greater than those of noncleft side (P < .01). A 3 mm labial, all lingual, and apico-distal ABTs decreased on the cleft side (P < .01). A positive correlation was found between lingual ACH and CRR (R = 0.316, P < .05), between the 3 mm (R = 0.417, P < .05) and 6 mm labial (R = 0.448, P < .05) ABT and CRR. A negative correlation was found between the 3 mm and 6 mm labial ABTs and the root length. CONCLUSIONS It can be suggested that the CRR is related to ACH and ABT. The lingual ACH, the 3 mm, and 6 mm labial ABTs tend to increase with the increasing CRR.
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Affiliation(s)
- Sijing Huang
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, 56694Shanghai Jiao Tong University School of Medicine, Huangpu District, Shanghai, China.,National Clinical Research Center for Oral Disease, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yang Chen PhD
- National Clinical Research Center for Oral Disease, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China.,Department of Oral & Craniomaxillofacial Surgery, 56695Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Huangpu District, Shanghai, China
| | - Zhenqi Chen PhD
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, 56694Shanghai Jiao Tong University School of Medicine, Huangpu District, Shanghai, China.,National Clinical Research Center for Oral Disease, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
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15
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Berger CH, Arnold C, Stalder AK, Weber A, Abou-Ayash S, Schimmel M. Root-retained overdentures: Survival of abutment teeth with precision attachments on root caps depends on overdenture design. J Oral Rehabil 2020; 47:1254-1263. [PMID: 32697868 DOI: 10.1111/joor.13060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 07/13/2020] [Accepted: 07/16/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Root-retained overdentures (OD) are one treatment option for partially edentulous patients. However, the available evidence regarding factors influencing abutment survival in root-retained ODs is limited. PURPOSE This retrospective study included clinical examinations and evaluated the survival rate of roots restored with precision attachments soldered to post-and-core (gold cap) retained ODs, analysed with respect to various patient- and prosthesis-related factors. METHODS Patients receiving at least one OD with gold caps in the past were invited for comprehensive clinical examinations. The primary outcome parameter was the abutment survival rate over the observation period (2002-2016). Possible contributing factors (eg closed vs open OD design) were analysed. Analyses included Kaplan-Meier estimators, Cox regressions and hazard ratios (HR). RESULTS 114 patients with 128 ODs originally retained by 280 abutments, with a cumulative total exposure time of 2035.4 years, were examined. Twenty-seven abutment teeth (9.6%) were lost after a mean observation period of 7.9 ± 3.4 years. Significant factors associated with abutment loss were a closed, compared to an open OD design (HR 8.38 (95% CI 1.11-63.59), P = .040), which was independent of the number of abutments per OD. Furthermore, the loss rate was higher when the denture was not worn day-and-night (HR 3.52 (95% CI 1.32-9.40), P = .012). Oral hygiene behaviour was associated with higher HRs. CONCLUSIONS ODs remain a viable treatment option for patients with few teeth remaining in the dental arch. It is advisable to choose an open design for the OD, irrespective of the number of abutment teeth. Furthermore, gold cap-retained ODs should not be removed overnight.
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Affiliation(s)
| | - Caroline Arnold
- Department of Reconstructive Dentistry and Gerodontology, University of Bern, Bern, Switzerland
| | - Anja Katrin Stalder
- Department of Reconstructive Dentistry and Gerodontology, University of Bern, Bern, Switzerland
| | - Adrian Weber
- Department of Reconstructive Dentistry and Gerodontology, University of Bern, Bern, Switzerland
| | - Samir Abou-Ayash
- Department of Reconstructive Dentistry and Gerodontology, University of Bern, Bern, Switzerland
| | - Martin Schimmel
- Department of Reconstructive Dentistry and Gerodontology, University of Bern, Bern, Switzerland.,Division of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland
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16
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Bae MS, Oh WS, Park YH, Lee JJ. Digital Workflow for Retrofitting a Surveyed Crown Using a Removable Partial Denture as an Antagonist. J Prosthodont 2020; 29:542-545. [PMID: 32394458 DOI: 10.1111/jopr.13187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/16/2020] [Accepted: 05/04/2020] [Indexed: 11/27/2022] Open
Abstract
Digital workflow expedites the procedure of retrofitting a surveyed crown against an existing removable partial denture (RPD). This article describes a simple and straightforward technique of digital workflow where an existing RPD is scanned as an antagonist to design the rest seat, guide plane, and height of contour of a surveyed crown.
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Affiliation(s)
- Min-Soo Bae
- Department of Prosthodontics, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University and Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea
| | - Won-Suk Oh
- Department of Biologic and Materials Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI
| | - Yeon-Hee Park
- Department of Prosthodontics, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University and Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea
| | - Jung-Jin Lee
- Department of Prosthodontics, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University and Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea
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17
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Hong HH, Mei CC, Liu HL, Liang CH, Lin CK, Lee FY, Chang CC. The correspondence of 3D supporting bone loss and crown-to-root ratio to periodontitis classification. J Clin Periodontol 2020; 47:825-833. [PMID: 32319127 DOI: 10.1111/jcpe.13296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 03/10/2020] [Accepted: 04/16/2020] [Indexed: 11/29/2022]
Abstract
AIM Assessing the application of three-dimensional clinical attachment loss (3D-CAL), 3D supporting bone loss (3D-SBL), supracrestal tissue attachment (STA), and crown-to-root ratio (CRR) in evaluating the 2017 periodontitis classification. MATERIALS AND METHODS We analysed ninety single-rooted human premolars with micro-computed tomography. The amount of 3D-SBL, linear radiographic bone loss (RBL), and CRR corresponding to various periodontitis stages as well as the statistical significance was investigated. RESULTS From a 3D perspective, the premolars with a 21% of 3D-SBL at 2.0 mm coronal root length (RL) and 15% RBL corresponded to the periodontitis stage I. Premolars with a 44% of 3D-SBL at coronal 4.2-4.4 mm RL and 33% RBL accorded with the periodontitis stage II. Excluding the consideration of STA, CRR = 5:6 and 4:3 were associated with the levels at 15% and 33% RBL, respectively. CONCLUSIONS A greater percentage of 3D-CAL than that of 2D-CAL is significant at evaluated levels. It is feasible to correlate the 3D-SBL, 3D-CAL, and STA parameters to evaluate the stages of periodontitis severity. However, the current use of RBL and CAL as applied for staging in the 2017 classification might be inconsistent with the evaluated premolar roots length, when STA dimensions are considered.
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Affiliation(s)
- Hsiang-Hsi Hong
- Department of Periodontics, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan
| | - Chih-Chun Mei
- Department of Periodontics, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan
| | - Heng-Liang Liu
- Department of Prosthodontics, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan
| | - Chao-Hua Liang
- Research associate, Instrument Department, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Ching-Kai Lin
- Research associate, Instrument Department, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Fu-Ying Lee
- Department of Periodontics, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan
| | - Chung-Chieh Chang
- Department of Periodontics, Chang Gung Memorial Hospital and Chang Gung University, Linkou, Taiwan
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Abstract
As our population ages, dentists face challenges in maintaining compromised teeth in aging patients. For the most part, elderly patients (i.e., over 65 years of age) prefer to keep their natural teeth and in some cases, avoid removable dentures altogether. Ideally, patients should not be rendered edentate late in life, as they are unlikely to successfully adapt to the limitations of complete replacement dentures. However, this is not always possible and care should ideally be planned to avoid edentulism, or at least, to carefully manage the transition to the edentate state. In the course of planning care, the dentist needs to recognise the need for age appropriate care, factoring in the impact of the elderly patient's health status and social circumstances. For elderly patients with a compromised dentition, the dentist should try to provide care which is minimally invasive and with as low a burden of maintenance as possible. In this paper, principles of pragmatic care for elderly patients with a compromised dentition will be outlined using clinical cases. Three pathways will be outlined: (i) maintenance of a functional natural dentition using adhesive restorative techniques; (ii) use of overlay prostheses and complete replacement overdentures to manage toothwear and toothloss, complete replacement overdentures, and; (iii) staging a transition to the edentate state using transitional removable partial dentures.
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Affiliation(s)
- Finbarr Allen
- Faculty of Dentistry, National University of Singapore, Singapore
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19
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Loss of natural abutment teeth with cast copings retaining overdentures: a systematic review and meta-analysis. J Prosthodont Res 2018; 62:407-415. [PMID: 29891420 DOI: 10.1016/j.jpor.2018.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 04/27/2018] [Accepted: 05/03/2018] [Indexed: 11/21/2022]
Abstract
PURPOSE To analyze the available evidence in the English, German and Japanese literature on the survival and complications of natural teeth with cast copings used to retain overdentures (ROD). STUDY SELECTION A systematic search strategy was conducted using MeSH terms and pre-defined criteria. Two groups of researchers searched Pubmed, CENTRAL, Embase (English, German), Ichushi-web (Japanese) as well as hand searching. Data were extracted independently by the two groups. The estimated frequency of abutment tooth loss was calculated from data on the number of lost teeth and exposure time. A meta-analysis was conducted to estimate the annual frequency of abutment tooth loss across all included studies. RESULTS A total of 4791 eligible studies from PubMed, Embase, and CENTRAL. An additional 316 articles were identified from the Ichushi-Web plus another 131 articles from additional sources. From those manuscripts, 19 reported relevant outcome data that was then extracted. The pooled data included a total of 1954 abutment teeth with a combined total exposure time of 9098 years. The estimated linear rate of loss was 1.76 %/year (95 %CI 1.13; 2.72). Caries and periodontal infections were identified as the most common reasons for abutment tooth loss. CONCLUSIONS Natural tooth retained overdentures often constitute the last resort before edentulism and might aid in this transition, especially in very old patients with reduced adaptive capacities. Given correct design, preparation and aftercare, RODs with cast copings, still are a valid treatment option in partially edentulous patients.
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20
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Inconsistency in the Crown-to-Root Ratios of Single-Rooted Premolars Measured by 2D and 3D Examinations. Sci Rep 2017; 7:16484. [PMID: 29184103 PMCID: PMC5705702 DOI: 10.1038/s41598-017-16612-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 11/15/2017] [Indexed: 11/08/2022] Open
Abstract
Micro-computed tomography (micro-CT) was applied to elucidate the relationship between the three-dimensional (3D) root surface area (RSA) and two-dimensional (2D) crown-to-root ratio (CRR) of extracted teeth to classify the periodontitis and assign a periodontal/prosthetic prognosis. A total of 31 maxillary and 35 mandibular single-rooted human premolars were examined. The amount of periodontal support on the basis of 3D RSA and 2D root length (RL) at CRRs of 1:1, 5:4, 3:2, and 2:1 were analyzed. Both maxillary and mandibular premolars demonstrated a nonsignificant RSA percentage at the evaluated CRRs. The coronal 21%–22% 2D RL and the 26%–28% 3D RSA bone loss apical to the cemento-enamel junction corresponded to a CRR of 1:1, relating to mild-moderate periodontitis. The coronal 30%–31% 2D RL and the 41%–42% 3D RSA bone loss corresponded to a CRR of 5:4, correlating to severe periodontitis. More severe clinical attachment loss (CAL) was observed in the 3D RSA measurement than in the 2D RL measurement at the evaluated CRRs. The amount of CAL at the CRR of 1:1 was inadequate to assess the severity of periodontitis on the basis of the 2D RL and 3D RSA measurements.
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21
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García‐Guerrero C, Parra‐Junco C, Quijano‐Guauque S, Molano N, Pineda GA, Marín‐Zuluaga DJ. Vertical root fractures in endodontically‐treated teeth: A retrospective analysis of possible risk factors. ACTA ACUST UNITED AC 2017; 9. [DOI: 10.1111/jicd.12273] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 03/13/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Claudia García‐Guerrero
- Universidad Nacional de Colombiaat Bogotá, School of DentistryDepartment of Basic Sciences and Oral Medicine Research Group: INVENDO
| | - Claudia Parra‐Junco
- Universidad Nacional de Colombiaat Bogotá, School of DentistryDepartment of Basic Sciences and Oral Medicine Research Group: INVENDO
| | - Sara Quijano‐Guauque
- Universidad Nacional de Colombiaat Bogotá, School of DentistryDepartment of Basic Sciences and Oral Medicine Research Group: INVENDO
| | - Nicolás Molano
- Center for the Study of Diseases AutoimmunesSchool of Medicine and Health SciencesUniversidad del Rosario at Bogotá Colombia
| | - Gerardo A. Pineda
- Universidad Nacional de Colombiaat Bogotá, School of ScienceDepartment of Statistics
| | - Dairo J. Marín‐Zuluaga
- Universidad Nacional de Colombiaat Bogotá, School of DentistryDepartment of Oral HealthResearch Group: Gerodontología
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22
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Ishida K, Nogawa T, Takayama Y, Saito M, Yokoyama A. Prognosis of double crown-retained removable dental prostheses compared with clasp-retained removable dental prostheses: A retrospective study. J Prosthodont Res 2017; 61:268-275. [PMID: 28073636 DOI: 10.1016/j.jpor.2016.12.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 11/18/2016] [Accepted: 12/19/2016] [Indexed: 11/16/2022]
Abstract
PURPOSE The present study compared the clinical prognosis of double crown-retained removable dental prostheses (D-DRPs) with that of clasp-retained removable dental prostheses (C-RDPs). METHODS Clinical records of 201 patients who had received 52 D-RDPs with 144 abutment teeth (D-teeth) and 199 C-RDPs with 399 abutment teeth (C-teeth) at the Prosthetic Dentistry Clinic in Hokkaido University Hospital between April 2005 and June 2015 were analyzed. Survival and complication probabilities of the two types of prostheses and abutment teeth were evaluated using the Kaplan-Meier method and compared using the log-rank test. Cox regression analysis was used to determine the impact of covariates on abutment teeth survival and complications such as gender, age, type of retainer, Eichner classification, jaw, type of tooth, endodontic therapy performed, type of edentulous space, and presence of opposing teeth. RESULTS Statistical analysis showed no significant differences between the two types of prostheses in terms of prostheses survival, prostheses complication, and abutment teeth survival. However, a significant difference was observed for complications of abutment teeth. Decementation was the most frequent cause of failure, which occurred in 76.9% of D-teeth and 28.3% of C-teeth. Patient's age, jaw, endodontic therapy performed, and type of edentulous space affected the survival of abutment teeth, whereas the type of retainer and edentulous space affected complications of abutment teeth. CONCLUSION The prognosis of both types of prostheses was considered to be acceptable. Although D-RDP had lower complication-free rates for abutment teeth, most of the observed complications were decementation, which was considered to be reparable.
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Affiliation(s)
- Keita Ishida
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13, Nishi 7, Kita-ku, Sapporo, 060-8586, Japan.
| | - Toshifumi Nogawa
- Clinical Research and Medical Innovation Center, Hokkaido University Hospital, Kita 14, Nishi 5, Kita-ku, Sapporo, 060-8648, Japan
| | - Yoshiyuki Takayama
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13, Nishi 7, Kita-ku, Sapporo, 060-8586, Japan
| | - Masayasu Saito
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13, Nishi 7, Kita-ku, Sapporo, 060-8586, Japan
| | - Atsuro Yokoyama
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita 13, Nishi 7, Kita-ku, Sapporo, 060-8586, Japan
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23
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Donovan TE, Marzola R, Murphy KR, Cagna DR, Eichmiller F, McKee JR, Metz JE, Albouy JP. Annual review of selected scientific literature: Report of the committee on scientific investigation of the American Academy of Restorative Dentistry. J Prosthet Dent 2016; 116:663-740. [PMID: 28236412 DOI: 10.1016/j.prosdent.2016.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/08/2016] [Accepted: 09/08/2016] [Indexed: 02/07/2023]
Abstract
STATEMENT OF PROBLEM It is clear the contemporary dentist is confronted with a blizzard of information regarding materials and techniques from journal articles, advertisements, newsletters, the internet, and continuing education events. While some of that information is sound and helpful, much of it is misleading at best. PURPOSE This review identifies and discusses the most important scientific findings regarding outcomes of dental treatment to assist the practitioner in making evidence-based choices. This review was conducted to assist the busy dentist in keeping abreast of the latest scientific information regarding the clinical practice of dentistry. MATERIAL AND METHODS Each of the authors, who are considered experts in their disciplines, was asked to peruse the scientific literature published in 2015 in their discipline and review the articles for important information that may have an impact on treatment decisions. Comments on experimental methodology, statistical evaluation, and overall validity of the conclusions are included in many of the reviews. RESULTS The reviews are not meant to stand alone but are intended to inform the interested reader about what has been discovered in the past year. The readers are then invited to go to the source if they wish more detail. CONCLUSIONS Analysis of the scientific literature published in 2015 is divided into 7 sections, dental materials, periodontics, prosthodontics, occlusion and temporomandibular disorders, sleep-disordered breathing, cariology, and implant dentistry.
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Affiliation(s)
- Terence E Donovan
- Professor, Biomaterials, University of North Carolina School of Dentistry, Chapel Hill, N.C.
| | | | | | - David R Cagna
- Professor, Advanced Prosthodontics University of Tennessee Health Sciences Center, Memphis, Tenn
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