Abstract
Purpose: The aim of this study was to evaluate the effects of three anti-erosion toothpastes (Sensodyne Proenamel, Biorepair, and Regenerate) on surface roughness (Sa) of three tooth-colored restorative materials: Resin composite (RC), glass ionomer cement (GI), and resin-modified glass-ionomer cement (RMGI). Methods: Sixty cylindrical specimens were prepared from each material and then were finished and polished and the first surface roughness (Sa) readings (T1) were recorded. Each material was randomly divided into 4 groups according to the antierosion toothpastes or water as control. Then application of the anti-erosion toothpastes or water for one hour for each group. Brushing was performed manually using electric toothbrush for one hour which is equivalent to brushing for two minutes twice each day for 15 days and then surface roughness (T2) of each specimen was recorded using a 3D noncontact profilometer. Result: Comparing the effect of anti-erosion toothpastes on the three restorative materials using ANOVA showed a statistically significant in the Filtek Z250 XT groups (p=0.006) but not in GC Fuji II LC groups (p=0.444) nor Ketac Fil Plus Aplicap groups (p=0.166). The highest Sa (Mean±SD) at T1 was observed in Ketac Fil Plus Aplicap (0.73±0.45) followed by GC Fuji II LC (0.32±0.09) then Filtek Z250 XT (0.16±0.02). For Filtek Z250 XT, there was statistically significant difference in surface roughness between distilled water and Sensodyne Pronamel (p=0.005) and between Sensodyne Pronamel and Regenerate (p=0.036). There was no statistically significant difference in surface roughness between different surface treatments for GC Fuji II LC (p=0.942) and Ketac Fil Plus Aplicap (p=0.447). Conclusion: Brushing tested restorative materials with anti-erosion toothpastes resulted in significant changes on their surface roughness and the most toothpaste caused change on Filtek Z250 XT was Sensodyne Pronamel, for the GC Fuji II LC was Biorepair, and for and Ketac Fil Plus Aplicap was Regenerate. Surface roughness varied depending on the anti-erosion toothpastes and the restorative material used.
