• Pereira, C.
• Marques, M.
• Portugal, Jaime
• Bernardo, Mf
• Rabaco, P.
• Gonzalez, L.
• Mourao, T.
• Tavares, Av
• Leitao, J.

Abstract

Purpose: To evaluate the clinical performance of an experimental veneering composite in 3-unit fixed partial dentures and to assess the influence of the framework material on the mentioned performance. Materials and Methods: A total of 60 fixed partial dentures were made with the experimental version of SR Adoro veneering composite. Half had a Vectris framework, and the other half gold alloy. Evaluation criteria were: shade match, surface texture, marginal shoulder, marginal gap, fracture, recurrent caries, retention, and abutment tooth hypersensitivity. The fixed partial dentures were rated as: R (ideal), S (acceptable) or T/V (unacceptable). Statistical analysis was performed using Mann-Whitney and Wilcoxon tests. Results: Comparison between Baseline and 1-Year in the Adoro/Gold group showed no change in color match. A statistical significant degradation in surface texture (p=0.007), marginal shoulder (p=0.014), marginal gap (p=0.034), and fracture (p=0.025) was found. All changes were minor from R to S except in the criteria marginal gap where 1 bridge was rated T/V, and fracture with 5 T/V ratings. Since fractures consisted in loss of small parts of veneering composite, 4 of these fixed partial dentures remained in service and only 1 was replaced. In Adoro/Vectris group only surface texture degradation was statistically significant (p=0.001). Nevertheless, SR Adoro maintained a clinically acceptable surface texture. Comparing the results for the two groups in each period, the only statistically significant differences found, was on hypersensitivity at Baseline (p<0.001). Conclusions: After one year, the overall performance of the experimental veneering composite was acceptable.

Topics

• surface
• gold
• composite
• texture
• gold alloy