Effect of Two Different Remineralizing Agents on the Surface Roughness of Bleached Enamel

To evaluate the effects of nano hydroxyapatite (NHAP) and amorphous calcium phosphate (ACP) remineralizing agents on the surface roughness of bleached bovine enamel. A total of 25 bovine anterior teeth were prepared for this study. They were randomly divided into two main groups the control group (n=5) and the experimental group (n=20) which received the photo-activated and chemically-activated bleaching agents. Then the experimental group was further divided into two subgroups receiving NHAP and ACP remineralizing agents. Surface roughness measurements were performed for all groups using image analysis software. One Way-ANOVA showed that the nano hydroxyapatite group specimens increased the enamel surface roughness after bleaching with photo-activated and chemically-activated bleaching agents in comparison with amorphous calcium phosphate. There was no statistically significant difference between both remineralizing agents. The application of remineralizing agents following bleaching procedures did not significantly alter the enamel surface roughness.