Carlo Maiorana1, Pier Paolo Poli, Andrea Enrico Borgonovo, Davide Rancitelli, Anna Chiara Frigo, Stefano Pieroni, Franco Santoro. 1. *Professor and Chairman, Department of Dental Implants, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy. †Resident, Department of Dental Implants, Maxillofacial and Odontostomatology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy. ‡Assistant Professor, Department of Dental Implants, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy. §PhD Fellow, Department of Dental Implants, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy. ¶Assistant Professor, Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy. ‖Resident, Department of Dental Implants, Maxillofacial Surgery and Odontostomatology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy. #Full Professor, Dental Clinic Director, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy.
Abstract
INTRODUCTION: The aim of this study was to evaluate the outcome of fresh-frozen bone allografts in preprosthetic surgery for implant placement purposes. MATERIALS AND METHODS: The cohort comprised 45 patients treated with fresh-frozen bone block grafts and dental implants. Clinical and radiological evaluations were performed to evaluate the survival rate. The data were statistically analyzed with the Kaplan-Meier estimator to assess the influence of possible predictors of implant failure on survival. RESULTS: Overall, 262 implants were retrospectively analyzed. The survival rate was 90.84% over a mean follow-up of 50 months. Comparing the donor site and the position of the implants, no statistically significant differences could be detected (P = 0.7194 and P = 0.2901, respectively), whereas sex resulted in a marginally statistically significant difference (P = 0.0581). When considering age categorized on the median value (≤55/>55 years), age resulted in a statistically significant difference (P = 0.0340), with higher failures found in older people. CONCLUSION: Implant loss was strictly related to the lack of primary osseointegration. Female sex and old age were found to be risk factors, which could negatively influence implant survival.
INTRODUCTION: The aim of this study was to evaluate the outcome of fresh-frozen bone allografts in preprosthetic surgery for implant placement purposes. MATERIALS AND METHODS: The cohort comprised 45 patients treated with fresh-frozen bone block grafts and dental implants. Clinical and radiological evaluations were performed to evaluate the survival rate. The data were statistically analyzed with the Kaplan-Meier estimator to assess the influence of possible predictors of implant failure on survival. RESULTS: Overall, 262 implants were retrospectively analyzed. The survival rate was 90.84% over a mean follow-up of 50 months. Comparing the donor site and the position of the implants, no statistically significant differences could be detected (P = 0.7194 and P = 0.2901, respectively), whereas sex resulted in a marginally statistically significant difference (P = 0.0581). When considering age categorized on the median value (≤55/>55 years), age resulted in a statistically significant difference (P = 0.0340), with higher failures found in older people. CONCLUSION: Implant loss was strictly related to the lack of primary osseointegration. Female sex and old age were found to be risk factors, which could negatively influence implant survival.
Authors: Carlo Maiorana; Mattia Manfredini; Mario Beretta; Fabrizio Signorino; Andrea Bovio; Pier Paolo Poli Journal: Materials (Basel) Date: 2020-05-22 Impact factor: 3.623
Authors: María Prados-Privado; Juan Carlos Prados-Frutos; Sérgio Alexandre Gehrke; Mariano Sánchez Siles; José Luis Calvo Guirado; José Antonio Bea Journal: Biomed Res Int Date: 2016-07-19 Impact factor: 3.411