Effect of different bleaching agents on the surface roughness and color stability of feldspathic porcelain [Efeito de diferentes agentes de clareamento na rugosidade superficial e estabilidade de cor da porcelana feldspática]

Abstract

Objective: The aim of this study was to evaluate the effect of different bleaching agents on the surface roughness and color stability of feldspathic porcelain. Material and Methods: In this study, totally 40 disc-shaped Noritake and Ceramco 3 feldspathic porcelain and two bleaching agents (Opalescence Boost and Opalescence Pf) were used. Bleaching agents were exposed to specimens according to their protocol. Then, the surface roughness of the specimens was evaluated with profilometer and the color of the specimens was recorded by colorimeter. Statistical analysis of the data was performed with IBM SPSS Statistics 20. Results: The results showed that that there were statistically significant differences between the bleaching agents on the surface roughness of feldspathic porcelain (p<0.05). However, there were no statistically significant differences between the bleaching agents on the color stability of feldspathic porcelain (p>0.05). Conclusion: The obtained data presented that the bleaching agents increased the surface roughness and not affect the color stability of the feldspathic porcelain. © 2019, Universidade Estadual Paulista, Institute of Science and Technology of Sao Jose dos Campos. All rights reserved.