1
|
Wu W, Song L, Liu J, Du L, Zhang Y, Chen Y, Tang Z, Shen M. Finite element analysis of the angle range in trans-inferior alveolar nerve implantation at the mandibular second molar. BMC Oral Health 2023; 23:928. [PMID: 38007495 PMCID: PMC10676576 DOI: 10.1186/s12903-023-03641-4] [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: 08/18/2023] [Accepted: 11/08/2023] [Indexed: 11/27/2023] Open
Abstract
BACKGROUND Trans- inferior alveolar nerve (IAN) implantation technique was wildly used while the potential appropriate angle range in which the residual alveolar bone can bear the stress without absorption are currently unclear. This study aimed to evaluate the stress distribution pattern of the interface between bone and implant by finite element analysis (FEA) to determine the appropriate range of the implant tilt angle. METHODS Cone beam computed tomography (CBCT) images of 120 patients with missing mandibular second molars and vertical bone height < 9 mm in the edentulous area were selected. The distances from the mandibular nerve canal to the buccal cortex, the lingual cortex and the alveolar ridge crest were measured by using a combination of software. The angular ranges of the buccal-lingual inclination of simulated trans-IAN implants were measured and three-dimensional finite element models were constructed in the mandibular second molar area according to the differences of the inclination angles. A vertical load (200N) was then applied to analyze the biomechanical conditions of the implant-bone interface during median occlusion. RESULTS The distance at the second molar from the nerve canal to the buccal cortex, lingual cortex and alveolar crest were 6.861 ± 1.194 mm, 2.843 ± 0.933 mm and 7.944 ± 0.77 mm. Trans-IAN implantation was feasible in 73.33% of patients. The minimum angle and maximum angles of the buccal-lingual inclination of the simulated implant were 19.135 ± 6.721° and 39.282 ± 6.581°. When a vertical static load of 200N was applied, the tensile stress in cortical bone gradually increased with the increase of the implant tilt angle. When the inclination angle reached 30°, the tensile stress (105.9 MPa) exceeded the yield strength (104 MPa) of cortical bone. Compared with the conventional implants, the stress peak value of the vertical ultra-short implant in cortical bone was greater than the stress peak value of the conventional implants at 10°(79.81 MPa) and 20°(82.83 MPa) and was smaller than the stress of the implant at 30°(105.9 MPa) and 40°(107.8 MPa). Therefore, when the bone mass allows, conventional-length implants should be selected whenever possible, and an operative range of the trans-IAN implantation in the mandibular second molar could be retained with an inclination angle of < 30°. CONCLUSIONS The mandibular nerve canal at the mandibular second molar was obviously biased to the lingual side, which ensured sufficient bone mass at the buccal side. In most patients with severe mandibular atrophy, it was possible to maintain a safe distance from the nerve canal with conventional-length implants via the trans-IAN implantation technique.
Collapse
Affiliation(s)
- Wenli Wu
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Liangyue Song
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Jinming Liu
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Lingyi Du
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Yuhang Zhang
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Yingying Chen
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Zichun Tang
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China.
- The Affiliated Stomatological Hospital of Soochow University, Suzhou Stomatological Hospital, Suzhou, 215000, China.
| | - Ming Shen
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China.
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, 210029, China.
- Department of General Dentistry, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, China.
| |
Collapse
|
2
|
Wadde K, Kri M, Venkatakrishnan L, Landge J, Nadkarni S. Vertical Ridge Augmentation Using Distraction Osteogenesis Versus Autogenous Bone Grafting: A Systematic Review and Meta-Analysis. J Maxillofac Oral Surg 2023; 22:672-679. [PMID: 37534356 PMCID: PMC10390398 DOI: 10.1007/s12663-023-01943-2] [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: 08/28/2022] [Accepted: 05/20/2023] [Indexed: 08/04/2023] Open
Abstract
Aim The aim of this systematic review was to systematically assess the papers comparing the surgical techniques of Alveolar Distraction Osteogenesis(ADO) and Autogenous Bone grafting (ABG) for Vertical Ridge Augmentation in terms of bone gain, bone resorption and incidences of complications. Metholodology The review was registered on PROSPERO with the ID : CRD42021237671. A broad electronic survey was conducted in the PubMed, Scopus, Web of Science, Cochrane Library, and Virtual Health Library databases of all studies published till 08/03/2022. Four studies fulfilled the criteria to carry out a meta-analysis a in which a total of 58 patients underwent ADO and 43 patients for ABG. A total of 133 implants were placed in the ABG group and 124 in the ADO group. Statistical Analysis DerSimonian-Laird estimator of variance was used for Random effect meta-analysis. The estimates of an intervention were expressed as the odds ratio (OR) and standard mean difference (SMD) in millimeters. Results There was statistically significant difference in terms of bone height gain with SMD of - 0.78 (95% 0.04-1.55) in ABG. Bone resorption and complications were statistically insignificant with SMD of 0.52 (95% - 1.59 to 0.56) and OR 0.55 (95% 0.18-1.70), respectively.PROSPERO Registration ID: CRD42021237671.
Collapse
Affiliation(s)
- Kavita Wadde
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, 49 PD’Mello Road, Near CSMT, Fort, Mumbai, Maharashtra 400001 India
| | - Mrimingsi Kri
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, 49 PD’Mello Road, Near CSMT, Fort, Mumbai, Maharashtra 400001 India
| | - Lakshmi Venkatakrishnan
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, 49 PD’Mello Road, Near CSMT, Fort, Mumbai, Maharashtra 400001 India
| | - Jayant Landge
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, 49 PD’Mello Road, Near CSMT, Fort, Mumbai, Maharashtra 400001 India
| | - Shambhavi Nadkarni
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, 49 PD’Mello Road, Near CSMT, Fort, Mumbai, Maharashtra 400001 India
| |
Collapse
|
3
|
Menini M, Pesce P, Delucchi F, Ambrogio G, Canepa C, Carossa M, Pera F. One-stage versus two-stage technique using two splinted extra-short implants: A multicentric split-mouth study with a one-year follow-up. Clin Implant Dent Relat Res 2022; 24:602-610. [PMID: 35700161 PMCID: PMC9796435 DOI: 10.1111/cid.13113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 05/05/2022] [Accepted: 05/21/2022] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To compare the clinical outcomes of extra-short implants (≤6.5 mm) inserted with one-stage versus two-stage technique in adjacent sites of the upper or lower jaw. MATERIALS AND METHODS In this split-mouth multicenter study, implants were randomly divided into two groups according to the healing phase: two-stage and one-stage technique. Primary outcome measures were implant survival, implant success, and prosthodontic complications. Secondary outcome measurements were: implant stability quotient (ISQ) collected at surgery time (T0), and after 3 (T3) and 12 (T12) months, marginal bone level (MBL) evaluated at T0, T3, T6, and T12, marginal bone loss evaluated at T6 and T12, plaque index (PI), probing depth (PD), bleeding on probing (BoP) evaluated at T3, T6, and T12. Significances of differences between groups were tested by linear mixed model with random intercept. RESULTS Nineteen patients (8 males and 11 females) were included. A total of 38 implants were inserted. At T12 implant cumulative survival and implant success rate were 100% in both groups. No statistically significant differences were recorded for any of the analyzed parameters between the two groups at any time point. ISQ values were similar at T0 (two-stage: mean 67.53 ± SD 19.47; one-stage: mean 66.53 ± 19.07 p = 0.8738) and increased in both groups at the 12-month follow-up appointment (two-stage: 81.1 ± 7.04; one-stage: 81.39 ± 0.9266). MBL values were similar in the two groups at any time point. At T12 marginal bone loss was 0.46 ± 0.41 (two-stage) and 0.45 ± 0.38 (one-stage) mm (p = 0.9417), while mean PD was 2.7 ± 0.85 (two-stage) and 2.69 ± 0.89 (one-stage) mm. CONCLUSIONS Within the limits of the present short-term report, extra-short implants demonstrated optimal clinical outcomes using the one-stage technique, without statistically significant differences compared with the traditional two-stage approach.
Collapse
Affiliation(s)
- Maria Menini
- Division of Prosthodontics and Implant Prosthodontics, Department of Surgical Sciences and Integrated Diagnostics (DISC)University of GenoaGenoaItaly
| | - Paolo Pesce
- Department of Surgical Sciences and Integrated Diagnostics (DISC)University of GenoaGenoaItaly
| | - Francesca Delucchi
- Division of Prosthodontics and Implant Prosthodontics, Department of Surgical Sciences and Integrated Diagnostics (DISC)University of GenoaGenoaItaly
| | - Giulia Ambrogio
- CIR Dental School Department of Surgical SciencesUniversity of TurinTorinoItaly
| | - Camilla Canepa
- Division of Prosthodontics and Implant Prosthodontics, Department of Surgical Sciences and Integrated Diagnostics (DISC)University of GenoaGenoaItaly
| | - Massimo Carossa
- CIR Dental School Department of Surgical SciencesUniversity of TurinTorinoItaly
| | - Francesco Pera
- CIR Dental School Department of Surgical SciencesUniversity of TurinTorinoItaly
| |
Collapse
|
4
|
Liu Z, Yang J, Zhou C, Liu Y, Luo E. A bibliometric analysis of research on craniomaxillofacial distraction osteogenesis from 2000 to 2021. Front Surg 2022; 9:932164. [PMID: 35978605 PMCID: PMC9377540 DOI: 10.3389/fsurg.2022.932164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveThis study collected and summarized publications related to craniomaxillofacial distraction osteogenesis(DO) from 2000 to 2021, investigated trends in related research, and compared publications from different countries, institutions and journals. The aim is showcasing hotspots and frontiers in the field and providing a reference for future research.BackgroundCraniomaxillofacial DO serves to treat different types of craniomaxillofacial dysplasia and bone defects and deformities. DO can significantly reduce surgical trauma, complications, and recurrence rate compared to conventional surgery. However, there is a lack of bibliometric analyses regarding Craniomaxillofacial DO.MethodsCiteSpace and VOSviewer were used to analyze and visualize 3,141 articles and reviews searching through the Web of Science Core Collection(WOSCC) to obtain publications on craniomaxillofacial DO from 1 January 2000 to 31 December 2021.ResultsIn the last 21 years, there has been a significant increase in the number of publications. The United States, the People's Republic of China, and Italy produce the vast majority of publications. University of Milan and University of Bologna are the most influential in this field. McCarthy JG is the most influential author. Obstructive sleep apnea, TMJ ankylosis and cleft lip and palate are potential research direction in this field.ConclusionFuture research should focus on the precise indications and optimal timing of craniomaxillofacial DO and the evaluation of the long-term outcomes of various modified procedures. This study provides a relatively objective reference for related researchers, medical practitioners, and global health systems.
Collapse
Affiliation(s)
- Zhen Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jianying Yang
- Department of Outpatient nursing, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
| | - Changhan Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yao Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - En Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Correspondence: En Luo
| |
Collapse
|
5
|
Treatment of an Avulsed and Ankylosed Incisor through Single Tooth Alveolar Osteotomy and Conventional Orthodontic Mechanisms. CHILDREN 2022; 9:children9050732. [PMID: 35626909 PMCID: PMC9139687 DOI: 10.3390/children9050732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/06/2022] [Accepted: 05/15/2022] [Indexed: 11/29/2022]
Abstract
We present the treatment of an injured and avulsed incisor (which was afterwards ankylosed), by subapical osteotomy and conventional orthodontic mechanisms. A 9-year-old boy presented for orthodontic treatment with an injured and avulsed central incisor, which, after initial repositioning, ended up with ankylosis and severe root resorption. The case was treated by single tooth alveolar osteotomy and distraction osteogenesis through conventional orthodontics, advocating for the floating bone concept due to the short vertical distance by which the tooth alveolus part had to be relocated. Orthodontic treatment of the avulsed central incisor was completed after osteotomy and distraction osteogenesis, and the tooth was restored to its proper position, aiming to address issues of aesthetics and function for the time being. The patient was finally referred to a prosthodontist for future and final implant rehabilitation due to severe root resorption. Distraction osteogenesis after surgical procedures is a reliable solution for dealing with an ankylosed and submerged tooth.
Collapse
|
6
|
Abstract
Passivation of titanium alloy dental meshes cleans their surface and forms a thin layer of protective oxide (TiO2) on the surface of the material to improve resistance to corrosion and prevent release of ions to the physiological environment. The most common chemical agent for the passivation process of titanium meshes is hydrochloric acid (HCl). In this work, we introduce the use of Piranha solution (H2SO4 and H2O2) as a passivating and bactericidal agent for metallic dental meshes. Meshes of grade 5 titanium alloy (Ti6Al4V) were tested after different treatments: as-received control (Ctr), passivated by HCl, and passivated by Piranha solution. Physical-chemical characterization of all treated surfaces was carried out by scanning electron microscopy (SEM), confocal microscopy and sessile drop goniometry to assess meshes’ topography, elemental composition, roughness, wettability and surface free energy, that is, relevant properties with potential effects for the biological response of the material. Moreover, open circuit potential and potentiodynamic tests were carried out to evaluate the corrosion behavior of the differently-treated meshes under physiological conditions. Ion release tests were conducted using Inductively Coupled Plasma mass spectrometry (ICP-MS). The antibacterial activity by prevention of bacterial adhesion tests on the meshes was performed for two different bacterial strains, Pseudomonas aeruginosa (Gram-) and Streptococcus sanguinis (Gram+). Additionally, a bacterial viability study was performed with the LIVE/DEAD test. We complemented the antibacterial study by counting cells attached to the surface of the meshes visualized by SEM. Our results showed that the passivation of titanium meshes with Piranha solution improved their hydrophilicity and conferred a notably higher bactericidal activity in comparison with the meshes passivated with HCl. This unique response can be attributed to differences in the obtained nanotextures of the TiO2 layer. However, Piranha solution treatment decreased electrochemical stability and increased ion release as a result of the porous coating formed on the treated surfaces, which can compromise their corrosion resistance. Framed by the limitations of this work, we conclude that using Piranha solution is a viable alternative method for passivating titanium dental meshes with beneficial antibacterial properties that merits further validation for its translation as a treatment applied to clinically-used meshes.
Collapse
|
7
|
Luo D, Yao C, Zhang R, Zhao R, Iqbal MZ, Mushtaq A, Lee IS, Kong X. Silk Fibroin/Collagen Blended Membrane Fabricated via a Green Papermaking Method for Potential Guided Bone Regeneration Application: In Vitro and In Vivo Evaluation. ACS Biomater Sci Eng 2021; 7:5788-5797. [PMID: 34724784 DOI: 10.1021/acsbiomaterials.1c01060] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Guided bone regeneration (GBR) technology is a commonly used surgical procedure for the repair of damaged periodontal tissues. Poor mechanical property and rapid degradation rate are the major reasons for GBR membrane failure in clinical applications. Herein, we applied a green papermaking method to fabricate silk fibroin (SF) membranes blended with collagen and tested their performance. The results showed that the blended SF75 (SF and collagen in a weight ratio of 75:25) membranes are biocompatible with good mechanical properties in the wet condition and appropriate biodegradation rate. MC3T3-E1 osteoblast cell adhesion and proliferation on the membranes were improved by the hybrid biological functions of SF and collagen. Subcutaneous implantation in rats for 9 weeks demonstrated that the membranes induced a less severe inflammatory response. The biodegradation time of the SF75 membranes was appropriate for tissue regeneration. This research, for the first time, reports a blended membrane prepared from silk fibroin and collagen with an ecofriendly method, which shows promise for application in guided bone regeneration.
Collapse
Affiliation(s)
- Dandan Luo
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,School of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Chenxue Yao
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Rui Zhang
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Ruibo Zhao
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - M Zubair Iqbal
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Asim Mushtaq
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - In-Seop Lee
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Institute of Natural Sciences, Yonsei University, Seoul 03722, Korea
| | - Xiangdong Kong
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.,Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| |
Collapse
|
8
|
Muallah D, Sembdner P, Holtzhausen S, Meissner H, Hutsky A, Ellmann D, Assmann A, Schulz MC, Lauer G, Kroschwald LM. Adapting the Pore Size of Individual, 3D-Printed CPC Scaffolds in Maxillofacial Surgery. J Clin Med 2021; 10:jcm10122654. [PMID: 34208695 PMCID: PMC8233728 DOI: 10.3390/jcm10122654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 12/26/2022] Open
Abstract
Three dimensional (3D) printing allows additive manufacturing of patient specific scaffolds with varying pore size and geometry. Such porous scaffolds, made of 3D-printable bone-like calcium phosphate cement (CPC), are suitable for bone augmentation due to their benefit for osteogenesis. Their pores allow blood-, bone- and stem cells to migrate, colonize and finally integrate into the adjacent tissue. Furthermore, the pore size affects the scaffold’s stability. Since scaffolds in maxillofacial surgery have to withstand high forces within the jaw, adequate mechanical properties are of high clinical importance. Although many studies have investigated CPC for bone augmentation, the ideal porosity for specific indications has not been defined yet. We investigated 3D printed CPC cubes with increasing pore sizes and different printing orientations regarding cell migration and mechanical properties in comparison to commercially available bone substitutes. Furthermore, by investigating clinical cases, the scaffolds’ designs were adapted to resemble the in vivo conditions as accurately as possible. Our findings suggest that the pore size of CPC scaffolds for bone augmentation in maxillofacial surgery necessarily needs to be adapted to the surgical site. Scaffolds for sites that are not exposed to high forces, such as the sinus floor, should be printed with a pore size of 750 µm to benefit from enhanced cell infiltration. In contrast, for areas exposed to high pressures, such as the lateral mandible, scaffolds should be manufactured with a pore size of 490 µm to guarantee adequate cell migration and in order to withstand the high forces during the chewing process.
Collapse
Affiliation(s)
- David Muallah
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (D.M.); (G.L.)
| | - Philipp Sembdner
- Department of Mechanical Engineering, Institute of Machine Elements and Machine Design, Technische Universität Dresden, 01062 Dresden, Germany; (P.S.); (S.H.)
| | - Stefan Holtzhausen
- Department of Mechanical Engineering, Institute of Machine Elements and Machine Design, Technische Universität Dresden, 01062 Dresden, Germany; (P.S.); (S.H.)
| | - Heike Meissner
- Department of Prosthetic Dentistry, University Hospital “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany;
| | - André Hutsky
- Organical CAD/CAM, Ruwersteig 43, 12681 Berlin, Germany; (A.H.); (D.E.)
| | - Daniel Ellmann
- Organical CAD/CAM, Ruwersteig 43, 12681 Berlin, Germany; (A.H.); (D.E.)
| | - Antje Assmann
- Zahntechnik Schönberg, Altseidnitz 19, 01277 Dresden, Germany;
| | - Matthias C. Schulz
- Department of Oral and Maxillofacial Surgery, University Hospital Tübingen, Eberhard Karls Universität Tübingen, Osianderstraße 2-8, 72076 Tübingen, Germany;
| | - Günter Lauer
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (D.M.); (G.L.)
| | - Lysann M. Kroschwald
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (D.M.); (G.L.)
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
- Correspondence:
| |
Collapse
|
9
|
Somoza-Martín JM, Vázquez-Casal A, Suárez-Cunqueiro M, García-García A, Gándara-Vila P, Pérez-Sayáns M. A new morphologic classification of the alveolar ridge after distraction osteogenesis in human patients. A 17 years retrospective case series study. Med Oral Patol Oral Cir Bucal 2021; 26:e304-e313. [PMID: 33247567 PMCID: PMC8141323 DOI: 10.4317/medoral.24196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 11/16/2020] [Indexed: 11/28/2022] Open
Abstract
Background To perform a morphologic classification based on the results of bone augmentation after a distraction osteogenesis.
Material and Methods Thirty-four (34) patients (24 women and 10 men; mean age, 47.1 years (SD=9.5); age range, 23 to 62 years) underwent a total of 42 alveolar ridge distractions before the placement of a total of 89 dental implants. Ridge bone morphology was evaluated as the main ordinal variable. Chi-squared, Kruskal-Wallis and ANOVA one-way test were used.
Results Category I (30.95%): consisted of wide alveolar rim and no bone defects Category II (28.57%): wide alveolar rim, lateral bone surface concavity. Category III (23.81%): narrow alveolar rim, lateral bone surface concavity. Category IV (2.38 %): distraction transport segment forming a bridge, without bone formed beneath and requiring guided bone regeneration. Category V (9.52%): return of the transport segment to its initial position due to the reverse rotation of the distractor screw. Category VI (4.76 %): distraction transport segment completely lost. Subcategory D (28.57%), consisted of lingual deviation of the distraction axis, occurring in any of the categories I to IV. More men (76.9 %) presented with category I (p<0.001). The use of the chisel resulted mainly in categories I and II (69.4 %) (p<0.001). GBR was only required in 23.1 % of the cases in Category I (p=0.011). The bone height achieved decreases as the category increases, due to the accompanying osteogenic limitations (p<0.001). The implants placed in category I were longer 11.5 ± 0.9 mm (CI95% 10.9-11.9 mm) compared to those placed in category III with a length of 10.4 ± 1.5 mm (CI95% 9.5-11.4 mm) (p=0.035).
Conclusions The alveolar ridge after distraction osteogenesis could be divided into six morphologic categories which provide a useful basis for decision-making regarding implant placement. Key words:Osteogenesis, distraction, bone lengthening, Ilizarov technique, dental implants.
Collapse
Affiliation(s)
- J-M Somoza-Martín
- Oral Surgery and Implantology Unit, Faculty of Dentistry, Universidade de Santiago de Compostela Entrerríos s/n, Santiago de Compostela C.P. 15782, Spain
| | | | | | | | | | | |
Collapse
|
10
|
Ma G, Wu C, Shao M. Simultaneous implant placement with autogenous onlay bone grafts: a systematic review and meta-analysis. Int J Implant Dent 2021; 7:61. [PMID: 33928458 PMCID: PMC8085156 DOI: 10.1186/s40729-021-00311-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 02/25/2021] [Indexed: 12/04/2022] Open
Abstract
Several authors have suggested that implants can be placed simultaneously with onlay bone grafts without affecting outcomes. Therefore, the purpose of this study was to answer the following clinical questions: (1) What are the outcomes of implants placed simultaneously with autogenous onlay bone grafts? And (2) is there a difference in outcomes between simultaneous vs delayed placement of implants with autogenous onlay bone grafts? Databases of PubMed, Embase, and Google Scholar were searched up to 15 November 2020. Data on implant survival was extracted from all the included studies (single arm and comparative) to calculate point estimates with 95% confidence intervals (CI) and pooled using the DerSimonian–Laird meta-analysis model. We also compared implant survival rates between the simultaneous and delayed placement of implants with data from comparative studies. Nineteen studies were included. Five of them compared simultaneous and delayed placement of implants. Dividing the studies based on follow-up duration, the pooled survival of implant placed simultaneously with onlay grafts after <2.5 years of follow-up was 93.1% (95% CI 82.6 to 97.4%) and after 2.5–5 years was 86% (95% CI 78.6 to 91.1%). Implant survival was found to be 85.8% (95% CI 79.6 to 90.3%) with iliac crest grafts and 95.7% (95% CI 83.9 to 93.0%) with intra-oral grafts. Our results indicated no statistically significant difference in implant survival between simultaneous and delayed placement (OR 0.43, 95% 0.07, 2.49, I2=59.04%). Data on implant success and bone loss were limited. Data indicates that implants placed simultaneously with autogenous onlay grafts have a survival rate of 93.1% and 86% after a follow-up of <2.5 years and 2.5–5years respectively. A limited number of studies indicate no significant difference in implant survival between the simultaneous and delayed placement of implants with onlay bone grafts. There is a need for randomized controlled trials comparing simultaneous and delayed implant placement to provide robust evidence.
Collapse
Affiliation(s)
- Guoqiang Ma
- Department of Oral Implantology, Jinhua Stomatological Hospital, 277 Silian Rd, Jinhua, 321000, Zhejiang Province, People's Republic of China
| | - Chaoan Wu
- Department of Stomatology, Yingtan Shangpin Dental Clinic, Yingtan, 335000, Jiangxi Province, People's Republic of China.
| | - Miaoting Shao
- Department of Oral Implantology, Jinhua Stomatological Hospital, 277 Silian Rd, Jinhua, 321000, Zhejiang Province, People's Republic of China
| |
Collapse
|
11
|
Moraschini V, Mourão CFDAB, Montemezzi P, Kischinhevsky ICC, de Almeida DCF, Javid K, Shibli JA, Granjeiro JM, Calasans-Maia MD. Clinical Comparation of Extra-Short (4 mm) and Long (>8 mm) Dental Implants Placed in Mandibular Bone: A Systematic Review and Metanalysis. Healthcare (Basel) 2021; 9:healthcare9030315. [PMID: 33809203 PMCID: PMC7998998 DOI: 10.3390/healthcare9030315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/02/2021] [Accepted: 03/08/2021] [Indexed: 01/05/2023] Open
Abstract
This systematic review (SR) aimed to evaluate implant survival rate, marginal bone loss (MBL), and biological/prosthetic complications of extra-short 4 mm dental implants. An electronic search without language or date restrictions was performed in five databases and in gray literature for articles published until August 2020. Prospective cohort studies and randomized clinical trials (RCTs) that evaluated the clinical performance of extra-short 4 mm dental implants were included. Studies were independently assessed for risk of bias using the Cochrane Collaboration’s tool. The protocol of this SR was registered in the PROSPERO database under number CRD42019139709. Four studies were included in the present SR. There was no significant difference in implant survival rate (p = 0.75) between extra-short 4 mm and long implants. After 12 months of function, the extra-short implants had a significantly (p = 0.003) lower marginal bone loss (MBL) rate when compared to long implants. Extra-short implants had a lower number of biological and prosthetic complications when compared to long implants. After 12 months of follow-up, extra-short 4 mm dental implants placed in the mandible exhibit satisfactory clinical outcomes concerning implant survival rate and MBL when compared to longer implants, with a low number of biological and prosthetic complications. A higher number of RCTs with longer follow-up is necessary for the future.
Collapse
Affiliation(s)
- Vittorio Moraschini
- Periodontology Department, Dental Research Division, School of Dentistry, Veiga de Almeida University, Rio de Janeiro 20271-020, Brazil;
| | | | | | | | - Daniel Costa Ferreira de Almeida
- Graduate Program, Dentistry School, Universidade Federal Fluminense, Niteroi 24020-140, Brazil; (I.C.C.K.); (D.C.F.d.A.); (K.J.)
| | - Kayvon Javid
- Graduate Program, Dentistry School, Universidade Federal Fluminense, Niteroi 24020-140, Brazil; (I.C.C.K.); (D.C.F.d.A.); (K.J.)
| | - Jamil Awad Shibli
- Periodontology and Oral Implantology Department, University of Guarulhos, Guarulhos 07023-070, Brazil;
| | - José Mauro Granjeiro
- Bioengineering Laboratory, National Institute of Metrology, Quality and Technology (INMETRO), Duque de Caxias 25250-020, Brazil;
- Dental School, Fluminense Federal University, Niterói 24020-140, Brazil
| | | |
Collapse
|
12
|
Cruz N, Martins MI, Domingos Santos J, Gil Mur J, Tondela JP. Surface Comparison of Three Different Commercial Custom-Made Titanium Meshes Produced by SLM for Dental Applications. MATERIALS 2020; 13:ma13092177. [PMID: 32397319 PMCID: PMC7254327 DOI: 10.3390/ma13092177] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 11/16/2022]
Abstract
The use of individualized titanium meshes has been referred to in scientific literature since 2011. There are many advantages to its use, however, the main complications are related to early or late exposures. As some aspects such as its surface properties have been pointed out to influence the soft tissue response, this study was designed to compare the surface characteristics of three commercially available individualized titanium meshes between them and according to the manufacturer’s specifications. The results from the scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction and the contact profilometry measurements were analyzed and cross-checked. It was discovered that, the BoneEasy’s post-processing superficial treatment was more refined, as it delivers the mesh with the lowest Ra value, 0.61 ± 0.14 µm, due to the applied electropolishing. On the other hand, the Yxoss CBR® mesh from ReOss® was sandblasted, presenting an extremely rough surface with a Ra of 6.59 ± 0.76 µm.
Collapse
Affiliation(s)
- Nuno Cruz
- Faculty of Dentistry, Universitat Internacional de Catalunya, 08017 Barcelona, Spain;
- Correspondence:
| | - Maria Inês Martins
- Faculty of Engineering, University of Porto (FEUP), 4200-465 Porto, Portugal;
| | - José Domingos Santos
- REQUIMTE-LAQV, Department of Metallurgical Engineering and Materials, Faculty of Engineering, University of Porto (FEUP), 4200-465 Porto, Portugal;
| | - Javier Gil Mur
- Faculty of Dentistry, Universitat Internacional de Catalunya, 08017 Barcelona, Spain;
| | - João Paulo Tondela
- CIROS from the Faculty of Medicine, University of Coimbra, 3004-504 Coimbra, Portugal;
| |
Collapse
|