Estudo comparativo de dureza e rugosidade entre materiais utilizados para confecção de dispositivos interoclusais

Abstract

The aim of this experimental study was to evaluate the degree of surface roughness and hardness of three different materials used for making interocclusal devices. Thirty blocks of 30mm in diameter and 10mm in thickness were made: 10 printed plates (Resin Smart Print Bio Bite Splint), 10 printed plates (Resin Smart Bio Clear Guide) and 10 plates of light-cured resin (Vipi CrilPluS). The plates were submitted to the roughness test, with a Portable Digital rugosimeter (SJ-201 - Mitutoyo) and to the hardness test, with Shore D. The data obtained were first verified by the Shapirokwin normality test and later analyzed statistically by the SPSS program (version 2020), through the ANOVA test. The results obtained did not present statistically significant differences, showing that the three materials have similar characteristics of hardness and roughness. Further studies aiming to give reliability to the use of 3D printed occlusal plates, are necessary to have the same reliability and credibility given to occlusal plates made with thermopolymerizable resins. [resumo fornecido pelo autor]