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Implant-supported overdentures with different bar designs: A retrospective evaluation after 5-19 years of clinical function

PURPOSE: This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19 years of clinical function. MATERIALS AND METHODS: A retrospective analysis of patient files was performed referring to 27 patients who received 36 IODs with 3 different bar designs (group A=pr...

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Detalles Bibliográficos
Autores principales: Rinke, Sven, Rasing, Hajo, Gersdorff, Nikolaus, Buergers, Ralf, Roediger, Matthias
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Academy of Prosthodontics 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4551791/
https://www.ncbi.nlm.nih.gov/pubmed/26330982
http://dx.doi.org/10.4047/jap.2015.7.4.338
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author Rinke, Sven
Rasing, Hajo
Gersdorff, Nikolaus
Buergers, Ralf
Roediger, Matthias
author_facet Rinke, Sven
Rasing, Hajo
Gersdorff, Nikolaus
Buergers, Ralf
Roediger, Matthias
author_sort Rinke, Sven
collection PubMed
description PURPOSE: This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19 years of clinical function. MATERIALS AND METHODS: A retrospective analysis of patient files was performed referring to 27 patients who received 36 IODs with 3 different bar designs (group A=prefabricated round bars, n=7; group B=one-piece anterior milled bars, n=20; and group C=two bilaterally placed milled bars, n=9) in the mandible (n=24) and/or in the maxilla (n=12). The analysis focused on the survival and success rates (according to Kaplan-Meier) of the implants and prostheses. Technical complication rates for each type of restoration were analyzed and compared via one-way ANOVA and the Chi-squared test. The prevalence of peri-implantitis (radiographic bone loss ≥3.5 mm) was evaluated by digital analysis of panoramic radiographs taken post-operative (baseline) and after 5-19 years of clinical function (follow-up). RESULTS: The mean observational time was 7.3 years. The survival rates of the prostheses and implants were 100% and 97.7%, respectively. Technical complications occurred more frequently in group A (mean: 3.5 during observational time) than in the other two groups (B: 0.8; C: 1.0). However, this difference was not statistically significant (P=0.58). Peri-implantitis was diagnosed for 12.4% of the implants in 37% of the patients. CONCLUSION: Bar-retained IODs are an adequate treatment option for edentulous jaws. These restorations may exhibit high implant/prosthesis survival rates (>97%), and a limited incidence of technical complications after a mean observational period of >7 years. Nevertheless, peri-implantitis was identified as a frequent and serious biological complication for this type of reconstruction.
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spelling pubmed-45517912015-09-01 Implant-supported overdentures with different bar designs: A retrospective evaluation after 5-19 years of clinical function Rinke, Sven Rasing, Hajo Gersdorff, Nikolaus Buergers, Ralf Roediger, Matthias J Adv Prosthodont Original Article PURPOSE: This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19 years of clinical function. MATERIALS AND METHODS: A retrospective analysis of patient files was performed referring to 27 patients who received 36 IODs with 3 different bar designs (group A=prefabricated round bars, n=7; group B=one-piece anterior milled bars, n=20; and group C=two bilaterally placed milled bars, n=9) in the mandible (n=24) and/or in the maxilla (n=12). The analysis focused on the survival and success rates (according to Kaplan-Meier) of the implants and prostheses. Technical complication rates for each type of restoration were analyzed and compared via one-way ANOVA and the Chi-squared test. The prevalence of peri-implantitis (radiographic bone loss ≥3.5 mm) was evaluated by digital analysis of panoramic radiographs taken post-operative (baseline) and after 5-19 years of clinical function (follow-up). RESULTS: The mean observational time was 7.3 years. The survival rates of the prostheses and implants were 100% and 97.7%, respectively. Technical complications occurred more frequently in group A (mean: 3.5 during observational time) than in the other two groups (B: 0.8; C: 1.0). However, this difference was not statistically significant (P=0.58). Peri-implantitis was diagnosed for 12.4% of the implants in 37% of the patients. CONCLUSION: Bar-retained IODs are an adequate treatment option for edentulous jaws. These restorations may exhibit high implant/prosthesis survival rates (>97%), and a limited incidence of technical complications after a mean observational period of >7 years. Nevertheless, peri-implantitis was identified as a frequent and serious biological complication for this type of reconstruction. The Korean Academy of Prosthodontics 2015-08 2015-08-18 /pmc/articles/PMC4551791/ /pubmed/26330982 http://dx.doi.org/10.4047/jap.2015.7.4.338 Text en © 2015 The Korean Academy of Prosthodontics http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Rinke, Sven
Rasing, Hajo
Gersdorff, Nikolaus
Buergers, Ralf
Roediger, Matthias
Implant-supported overdentures with different bar designs: A retrospective evaluation after 5-19 years of clinical function
title Implant-supported overdentures with different bar designs: A retrospective evaluation after 5-19 years of clinical function
title_full Implant-supported overdentures with different bar designs: A retrospective evaluation after 5-19 years of clinical function
title_fullStr Implant-supported overdentures with different bar designs: A retrospective evaluation after 5-19 years of clinical function
title_full_unstemmed Implant-supported overdentures with different bar designs: A retrospective evaluation after 5-19 years of clinical function
title_short Implant-supported overdentures with different bar designs: A retrospective evaluation after 5-19 years of clinical function
title_sort implant-supported overdentures with different bar designs: a retrospective evaluation after 5-19 years of clinical function
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4551791/
https://www.ncbi.nlm.nih.gov/pubmed/26330982
http://dx.doi.org/10.4047/jap.2015.7.4.338
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