AVALIAÇÃO DA RUGOSIDADE DE MATERIAIS PARA PLACAS INTEROCLUSAIS DOS MÉTODOS CONVENCIONAIS, FRESADAS CAD/CAM E IMPRESSO 3D

Abstract

Statement of the Problem: Digital technology is becoming increasingly prevalent in dentistry, providing time savings and technique simplification. Despite the growing use of digital workflows for fabricating occlusal splints, there is still limited scientific evidence on the surface properties of these materials compared to conventional methods. Objective: to evaluate the surface roughness of acrylic resins used in the fabrication of interocclusal splints, comparing conventional methods with those of the CAD/CAM system and 3D printing. Materials and Methods: fifty specimen of acrylic resins used in the fabrication of interocclusal splints, measuring 10 x 3 mm in accordance with the specifications of ISO 20795-1: (2013) International Standard for testing acrylic resins, were divided according to the material used: thermopolymerizable resin, autopolymerizable resin, hard/soft resin, milled resin, and 3D printed resin. The one-way ANOVA and Tukey tests were applied with a significance level of p < 0.05. Results: when performing the multiple comparison using the Tukey test, it was observed that the thermopolymerizable and milled resins showed significantly lower roughness values, with P < 0.05. Conclusions: these two types of resin exhibit greater surface smoothness.