Long-Term Retrospective Evaluation of Dental Implants Placed in Resorbed Jaws Reconstructed With Appositional Fresh-Frozen Bone Allografts. Issue 3 (June 2016)

• Record Type: Journal Article
• Authors: Maiorana, Carlo; Poli, Pier Paolo; Borgonovo, Andrea Enrico; Rancitelli, Davide; Frigo, Anna Chiara; Pieroni, Stefano; Santoro, Franco
• Is Part Of: Implant dentistry. Volume 25:Issue 3(2016:Jun.)
• Publication Date: 2016-06
• Subjects: block grafts -- bone augmentation -- homologous bone -- survival rate; Dental implants -- Periodicals; 617.69305
• DOI: 10.1097/ID.0000000000000412
• Languages: English
• ISSNs: 1056-6163

Abstract

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.