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

Luca Francetti, Andrea Rodolfi, Bruno Barbaro, Silvio Taschieri, Nicolò Cavalli, Stefano Corbella

Research output: Contribution to journalArticle


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 followup 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.

Original languageEnglish
Pages (from-to)210-215
Number of pages6
JournalJournal of Periodontal and Implant Science
Issue number6
Publication statusPublished - 2015



  • Bone resorption
  • Dental implants
  • Dental restoration failure
  • Implant-supported dental prosthesis
  • Peri-implantitis

ASJC Scopus subject areas

  • Oral Surgery
  • Periodontics

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