Análise de dentes de estoque submetidos à escovação: avaliação de três marcas comerciais

Abstract

Introduction: Acrylic resin artificial teeth are widely used in the manufacture of prostheses, as they have physical, mechanical and biological properties, as well as easy handling characteristics. However, due to its low abrasion resistance characteristic, brushing can lead to loss of mass of artificial teeth and increase in roughness. Objective: To evaluate the wear of stock teeth of Hereaus Premium brands; Trilux and Vita, used for dentures, after a period of 1 year of brushing with toothpaste. Methodology: For this study, 10 artificial teeth of each brand (Trilux, Vita and Hereaus Premium) were used. Teeth were fixed with orthophthalic resin in a 15 mm thick PVC tube. For the abrasion test, a simulated brushing machine with soft bristle toothbrushes and toothpaste solution was used. The surface roughness and mass of each specimen were determined before and after the 12-month simulated brushing. Results: After the abrasion test, it was observed that there was an increase in roughness in all commercial brands and there was no significant loss of mass. Conclusion: The stock teeth of Hereaus Premium brands; Trilux and Vita showed the same abrasion resistance. Brushing caused an increase in surface roughness in all groups, without significant loss in mass.