Premium
Implant‐supported fixed cantilever prostheses in partially edentulous arches. A seven‐year prospective study
Author(s) -
Romeo Eugenio,
Lops Diego,
Margutti Emilio,
Ghisolfi Marco,
Chiapasco Matteo,
Vogel Giorgio
Publication year - 2003
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1034/j.1600-0501.2003.120905.x
Subject(s) - cantilever , dentistry , implant , dentition , orthodontics , medicine , dental prosthesis , materials science , surgery , composite material
The purpose of the following study was to evaluate the medium‐ to long‐term prognosis of implant‐supported cantilever fixed prostheses, and to establish to what degree this is influenced by factors such as length, type of cantilever (mesial or distal), and opposite dentition versus cantilever prostheses. This study was performed on a sample of 38 partially edentulous patients treated between January 1994 and March 2001 with 49 partial cantilever fixed prostheses supported by 100 implants. Marginal bone resorption (MBL) has been studied and used as a reference parameter to define therapeutic success. The MBL measurement was made possible by transposing X‐ray images of patients selected on a PC and then using a software program. Statistical analysis was carried out for possible correlation between peri‐implant bone resorption and the parameters considered in this study: length and type (mesial or distal) of cantilever and opposite dentition to cantilever prostheses. Seven years after loading cantilever prostheses, the overall cumulative implant survival rate (OCSR) was 97%, and the prostheses success rate is 98%. Mesial cantilever prostheses registered a lower success rate (97.1%) than distal cantilever prostheses (100%). Furthermore, a better prognosis was not observed when the opposite dentition of the prostheses comprised natural teeth, or fixed prostheses on natural teeth, when compared with the cases in which opposite teeth were implant‐supported fixed prostheses. The authors concluded that medium‐term prognosis of implant‐supported cantilever fixed prostheses and traditional implant‐supported fixed prostheses was comparable. However, a thorough pre‐treatment analysis of risk factors regarding implant‐supported prosthesis survival is important.