Efeitos da polpa de cupuaçu na rugosidade de superfície e microdureza de materiais odontológicos

Abstract

The consumption of acid products may cause dental erosion and alteration on the mechanical properties of dental materials. The objective of this study was to compare the effect of cupuaçu extract, cola soda and artificial saliva on the surface roughness and microhardness of dental materials (composite resin, resin modified glass ionomer, sealer, acrylic resin and bis-acrylic resin). Ten samples of each material were manufactured for each immersion group. Each sample measured 6 mm diameter X 1.5 mm thickness. Microhardness and surface roughness were evaluates 24h after samples were manufactures, 7 and 30 days after samples were immersed on the solutions. The results demonstrated that the cola solution promoted reduction of he microhardness of all the materials, except the composite resin and bis-acrylic resin. The cupuaçu solution promoted reduction of the composite resin and acrylic resin microhardness. The cupuaçu solution did not increase the surface roughness of any of the evaluated materials. The cola soda increased the surface roughness of the sealer. There was no difference on the effect of the solutions on the surface roughness of the following materials: resin modified glass ionomer and bis-acrylic resin. It can be concluded that, most of the materials presented some change after the immersion on the solutions. The juice containing cupuaçu extract promoted less negative effects than the cola soda.