OBJECTIVES: The aims of this study were to identify with appropriate statistical tests the risk factors associated with implant failure and to evaluate the long-term survival of dental implants using implant loss as an outcome variable and performing an implant-, surgery- and patient-based analysis of failures. MATERIAL AND METHODS: A retrospective cohort study design was used. One thousand sixty patients received 5787 BTI implants during the years of 2001-2005 in Vitoria, Spain. The potential influence of demographic items, clinical items, surgery-dependent items and prosthetic variables on implant survival was studied. Implant survival was analysed using a life-table analysis. Cox proportional hazards regression was used to identify risk factors related to implant failure. RESULTS: Smoking habits, implant position, implant staging (two-stage implants) and the implementation of special techniques were statistically correlated with lower implant survival rates. Two risk factors associated with implant failure were detected in this study: implant staging (two-stage implants) and the use of special techniques. Additionally, the overall survival rates of BTI implants were 99.2%, 96.4% and 96% for the implant-, surgery- and patient-based analysis, respectively. Totally, 28 out from 5787 implants (0.48%) were lost during the observation period. Most of the patients with implant failure (69.6%) presented chronic or aggressive periodontitis. CONCLUSIONS: Implant staging and the use of special techniques are risk factors for implant failure.
OBJECTIVES: The aims of this study were to identify with appropriate statistical tests the risk factors associated with implant failure and to evaluate the long-term survival of dental implants using implant loss as an outcome variable and performing an implant-, surgery- and patient-based analysis of failures. MATERIAL AND METHODS: A retrospective cohort study design was used. One thousand sixty patients received 5787 BTI implants during the years of 2001-2005 in Vitoria, Spain. The potential influence of demographic items, clinical items, surgery-dependent items and prosthetic variables on implant survival was studied. Implant survival was analysed using a life-table analysis. Cox proportional hazards regression was used to identify risk factors related to implant failure. RESULTS: Smoking habits, implant position, implant staging (two-stage implants) and the implementation of special techniques were statistically correlated with lower implant survival rates. Two risk factors associated with implant failure were detected in this study: implant staging (two-stage implants) and the use of special techniques. Additionally, the overall survival rates of BTI implants were 99.2%, 96.4% and 96% for the implant-, surgery- and patient-based analysis, respectively. Totally, 28 out from 5787 implants (0.48%) were lost during the observation period. Most of the patients with implant failure (69.6%) presented chronic or aggressive periodontitis. CONCLUSIONS: Implant staging and the use of special techniques are risk factors for implant failure.
Authors: Frank Mayta-Tovalino; Yens Mendoza-Martiarena; Percy Romero-Tapia; María Álvarez-Paucar; Luis Gálvez-Calla; Juan Calderón-Sánchez; Rodolfo Bolaños-Cardenas; Antonio Diaz-Sarabia Journal: Int J Dent Date: 2019-06-24
Authors: V Cervelli; I Bocchini; C Di Pasquali; B De Angelis; G Cervelli; C B Curcio; A Orlandi; M G Scioli; E Tati; P Delogu; Pietro Gentile Journal: Biomed Res Int Date: 2013-09-28 Impact factor: 3.411
Authors: Mohamed Ali Ali Arakeeb; Ahmed Abbas Zaky; Tarek Abdel-Hamid Harhash; Walid S Salem; Mohamed El-Mofty Journal: Open Access Maced J Med Sci Date: 2019-08-12