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Short‐term complications of implant‐supported and combined tooth‐implant‐supported fixed dental prostheses
Author(s) -
Rammelsberg Peter,
Schwarz Stefanie,
Schroeder Christin,
Bermejo Justo L.,
Gabbert Olaf
Publication year - 2013
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 - 10.1111/j.1600-0501.2012.02482.x
Subject(s) - dentistry , implant , medicine , incidence (geometry) , veneer , abutment , dental prosthesis , dental abutments , bleeding on probing , complication , implant failure , surgery , periodontitis , mathematics , civil engineering , geometry , engineering
Objective The objective of this clinical study was to evaluate survival and incidence of complications for metal‐ceramic and all‐ceramic implant‐supported fixed dental prostheses ( FDP s) and tooth‐implant‐supported FDP s. Material and methods One‐hundred and sixty‐six FDP s placed in 132 patients from a prospective study were selected for this retrospective analysis. Included were 91 conventional implant‐supported FDP s with implant support on both extremities, 27 implant‐supported cantilever FDP s, and 48 tooth‐implant‐supported FDP s. All restorations were veneered with ceramic. Twenty‐six FDP s had a zirconia framework and 140 had a metal framework. Kaplan–Meier analysis was performed to estimate FDP success defined as complication‐free survival and the Cox regression model was used to isolate risk factors for the most frequent complications. Results Within a median follow‐up of 1 year and 2 months, three failures were caused by a failed implant ( n = 2) and by extended chipping of the veneer ( n = 1). In contrast with this low incidence of failure was a high incidence of complications including chipping ( n = 29), loss of retention ( n = 35), and abutment fractures ( n = 2). Multivariate survival analysis revealed a significantly greater incidence of chipping for males and a tendency to increased incidence of chipping for zirconia‐based FDP s. The incidence of loss of retention tended to be less for tooth‐implant‐supported FDP s, for which semi‐permanent cement was the only significant risk factor, with a hazard ratio of almost 5. Conclusions As chipping of the ceramic veneer was the most frequent complication leading to substantial aftercare, improvements of ceramic veneers are desirable for zirconia‐based and metal‐based FDP s.