Implant success rates in full-arch rehabilitations supported by upright and tilted implants: a retrospective investigation with up to five years of follow-up

• Published in: Journal of periodontal & implant science Vol. 45; no. 6; pp. 210 - 215
• Main Authors: Francetti, Luca, Rodolfi, Andrea, Barbaro, Bruno, Taschieri, Silvio, Cavalli, Nicolo, Corbella, Stefano
• Format: Journal Article
• Language: Korean
• Published: 2015
• Subjects: Bone resorption; Dental restoration failure; Implant-supported dental prosthesis; Peri-implantitis; Dental implants
• ISSN: 2093-2278; 2093-2286

Purpose: The aim of this retrospective study was to investigate the cumulative success rate, the implant survival rate, and the occurrence of biological complications in implants supporting full-arch immediately loaded rehabilitations supported by upright and tilted implants. Methods: The clinical records and periapical radiographs of patients who attended follow-up visits were collected, and information was recorded regarding marginal bone loss resorption, the occurrence of peri-implant infectious diseases, and the implant survival rate. Implants were classified as successful or not successful according to two distinct classifications for implant success. Results: A total of 53 maxillary and mandibular restorations including 212 implants were analysed, of which 56 implants were studied over the full five-year follow-up period. After five years, the cumulative success rate was 76.04% according to the Misch classification and 56.34% according to the Albrektsson classification. The cumulative implant survival rate was 100%, although one implant was found to be affected by peri-implantitis at the second follow-up visit. Conclusions: The cumulative success rate of the implants dropped over time, corresponding to the progression of marginal bone resorption. The prevalence of peri-implantitis was very low, and the implant survival rate was not found to be related to the cumulative success rate.