Analysis of technical complications and risk factors for failure of combined tooth‐implant‐supported fixed dental prostheses. (10th June 2020)

• Record Type: Journal Article
• Authors: Chrcanovic, Bruno Ramos; Kisch, Jenö; Larsson, Christel
• Is Part Of: Clinical implant dentistry and related research. Volume 22:Number 4(2020)
• Page Start: 523
• Page End: 532
• Publication Date: 2020-06-10
• Subjects: combined tooth‐implant‐supported fixed dental prosthesis -- dental implant -- fixed prosthesis -- nonrigid connection -- survival -- technical complications; Dental implants -- Periodicals; Dental Implantation -- Periodicals; Dental Implants -- Periodicals; 617.693
• DOI: 10.1111/cid.12927
• Languages: English
• ISSNs: 1523-0899

Abstract

Abstract: Background: The oral rehabilitation with fixed restorations supported by the combination of teeth and dental implants has been advocated in some cases. Purpose: To assess the clinical outcomes of these prostheses. Fixed restorations supported by the combination of teeth and dental implants. Materials and methods: This retrospective study included all patients treated with combined tooth‐implant‐supported fixed dental prostheses (FDPs) at one specialist clinic. Abutment/prosthesis failure and technical complications were the outcomes analyzed. Results: A total of 85 patients with 96 prostheses were included, with a mean follow‐up of 10.5 years. Twenty prostheses failed. The estimated cumulative survival rate was 90.7%, 84.8%, 69.9%, and 66.2% at 5, 10, 15, and 20 years, respectively. The failure of tooth and/or implant abutments in key positions affected the survival of the prostheses. There were seven reasons for prostheses failure, with the loss of abutments exerting a significant influence. Bruxism was possibly associated with failures. Prostheses with cantilevers did not show a statistically significant higher failure rate. No group had a general higher prevalence of technical complications in comparison to the other groups. Conclusions: Although combined tooth‐implant‐supported FDPs are an alternative treatment option, this study has found that across 20 years of service nearly 35% the prostheses may fail.