A Three-Year Retrospective Study on Survival of Ceramic-Veneered Zirconia (Y-TZP) Fixed Dental Prostheses Performed in Private Practices

Abstract

Objectives The aim of this retrospective study was to evaluate the three-year clinical outcome for ceramic-veneered zirconia fixed dental prostheses (FDPs). Methods All patients who were treated with ceramic-veneered zirconia FDPs, in three private practices in Sweden, during the period June 2003 to April 2007 were included. Case records from 151 patients, treated with a total of 184 zirconia FDPs (692 units), were analysed for clinical data. All complications noted in the charts were registered and compared to definitions for success and survival and statistical analysis was performed using the Kaplan-Meier method and a Cox regression model. Results In total, 32 FDPs in 31 patients experienced some type of complication (17.4% of FDPs, 20.5% of patients). Core fractures occurred in two (1.1%) FDPs. Two (1.1%) FDPs or 0.6% of units showed adhesive veneer fractures. Cohesive veneer fractures occurred in 10 (5.4%) FDPs (1.6% of units). The three-year cumulative success and survival rates (CSR) were 82.3% and 95.2%, respectively. Conclusions Ceramic-veneered zirconia is a promising alternative to metal-ceramic FDPs, even in the posterior area. However, the higher survival rate of metal-ceramic FDPs should be noted and both dentists and patients must be aware of the risks of complications.

Fracture Load of CAD/CAM Fabricated Cantilever Implant-Supported Zirconia Framework: An In Vitro Study

“…Cantilever FPDs (CFPDs) are considered as one of the viable treatment options for patients presenting with distal extension edentulous ridges. The reviews regarding the CFPDs are conflicting and some researchers have raised their concerns about the risks associated with CFPDs [ 26 , 27 ]. Cantilevers may adversely influence the biomechanics of implant restorations, leading to mechanical failure or biological complications [ 28 ].…”

Effect of pH Cycling Frequency on Glass–Ceramic Corrosion

“…However, these restorations have a higher failure rate than metal restorations in numerous clinical studies. Systematic reviews showed survival rates were 88% to 97% for ceramic prostheses, compared with 94% to 97% for metal prostheses for 3 to 5 years [4][5][6][7][8]. The survival rates decreased to 22% to 47% [9,10] for ceramic prostheses and 74% to 85% for metal prostheses for 13 to 15 years [11][12][13][14].…”

Zirconia ceramic fixed partial dentures after cyclic fatigue tests and clinical evaluation: a systematic review

“…Clinical trials are expensive and usually delayed for about eight to ten years after a certain product has been proved and recommended for safe clinical use [56]. We have no comparative clinical follow-up studies for the different types of Y-TZP and their respective properties [49]. In the 28 clinical studies gathered, where veneered zirconia-FPDs were observed, a different type of Y-TZP has been used for framework and different kinds of porcelain for veneering.…”

“…[22,49]. Eleven clinical studies report about framework fracture from 1 % to 17.6 % [24,29,33,34,35,36,37,40,42,44,49]. Loss of retention was documented in only three clinical studies [26,33,46].…”