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  • Title: Retrospective Analysis on Survival Rate, Template-Related Complications, and Prevalence of Peri-implantitis of 694 Anodized Implants Placed Using Computer-Guided Surgery: Results Between 1 and 10 Years of Follow-Up.
    Author: Tallarico M, Meloni SM.
    Journal: Int J Oral Maxillofac Implants; 2017; 32(5):1162-1171. PubMed ID: 28906510.
    Abstract:
    PURPOSE: To report survival rate, early surgical template-related complications, and prevalence of peri-implantitis of dental implants placed in private practices using computer-guided, template-assisted surgery and followed between 1 and 10 years. MATERIALS AND METHODS: The present retrospective multicenter study evaluated data collected from fully or partially edentulous patients, with anodized-surface implants placed using computer-guided, template-assisted surgery between January 2006 and December 2015. The outcome measures were implant cumulative survival rate (CSR), early surgical complications involving the surgical template, and prevalence of peri-implantitis. RESULTS: A total of 694 implants were placed in 141 patients. Ten patients (7.1%) with 48 implants (6.9%) dropped out during the study period. One hundred seventeen patients, who received 121 surgical and prosthetic procedures, were treated according to a double-scan protocol, while the remaining 24 patients were treated by using the integrated treatment workflow. Most of the implants were immediately loaded (528 implants, 76.1%; 112 patients, 79.4%). Overall, 107 complete full-arch restorations (supported by four to eight implants each) were delivered in 103 patients (73%) with 595 implants (85.7%), while 13 single and 30 partial restorations (two to five implants each) were delivered in 38 patients (27%) with 99 implants (14.3%). Patients were followed for up to 10 years (mean: 58.2 months, range: 12 to 120 months). Implant- and patient-level CSR (Kaplan-Meier estimation) at the 10-year follow-up was 97.4% (95% CI: 1.0309 to 0.9161) and 92.1% (95% CI: 1.1575 to 0.6836), respectively. All failed implants were lost before definitive prosthesis delivery (early failure). Ten (7.1%) minor template-related complications were experienced and resolved chairside. Over the entire follow-up period, four patients (2.8%) with 12 implants (1.7%) showed signs of peri-implantitis at the 1- (four implants), 2- (four implants), and 4-year (four implants) visits. CONCLUSION: High long-term survival rates and low complications and prevalence of peri-implantitis were observed for a large cohort of anodized-surface implants placed in private practices. Further studies are needed to confirm these preliminary results.
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