Análise superficial de resinas utilizadas em restaurações protéticas temporárias sobre implantes

Abstract

Introduction: The provisional restoration step, as well as the choice of the restorative material, are important to achieve success in dental implant rehabilitation, affecting the peri-implant tissues, aesthetics and patient satisfaction. Objective: To compare three acrylic materials used in temporary restorations on implants assessing the surface roughness and staining. Methodology: 72 specimens were fabricated, 24 from each group: RQ (chemically activated acrylic resin), RB (bisacryl resin) and CC (CAD/CAM acrylic resin). The surface roughness was evaluated by means of a rugosimeter (Ra in µm) and the staining was evaluated by a spectrophotometer, after immersion in coffee and distilled water (control) for 3 days. Statistical analysis was performed using the Kruskal-Wallis and Anova One-way tests with Tukey's post test, adopting p < 0.05. Results: The RQ, RC and RB groups had Ra values of 1.28μm, 0.43μm, 0.13μm, respectively, showing a statistically significant difference among them (p<0.006). The RB group immersed in coffee had significant staining (1.70g/ml) when compared to RC (0.79g/ml) and RQ (0.63g/ml) (p<0.001). The RQ and RC groups were similar to each other. Conclusion: The CAD/CAM acrylic showed satisfactory results and, in addition, is appropriate for rebasing during the provisional restoration step in dental implants rehabilitations.