The Effects of Manual and Powered Brushing with a Tooth Brush on Surface Roughness Alteration of Different Resin and Glass Ionomer-based Restorative Materials: An In Vitro Study

Abstract

Objective: This study aimed to present a comparative evaluation of the effects of manual and powered brushing with a tooth brush on surface roughness of different resin and glass ionomer-based restorative materials. Materials and Methods: A total of 160 discs were prepared from four different restorative materials (resin, compomer, high-viscosity glass ionomer and conventional glass ionomer-based materials). Half of the specimens from each group were brushed manually, and the other half were power-brushed. The surface roughness (Ra) values before and after brushing (.Ra) were measured, recorded and statistically analysed. Student's t-test, Mann-Whitney U and Kruskal-Wallis H tests were used for statistical comparisons. The statistical significance level was determined as 5%. Results: An increase in the surface roughness was observed in all restorative materials after manual and powered brushing. However, no statistically significant difference was observed among the different restorative materials in terms of the increase in roughness (p>0.05). Additionally, no statistically significant difference was found between manual and electric brushing in terms of the increase in surface roughness of the restorative materials (p>0.05). Conclusion: The restorative materials examined in this study did not have any superiority or disadvantage over each other in terms of the increase in surface roughness after manual and powered brushing. In addition, as powered brushing does not lead to extra roughness compared with manual brushing and owing to its other advantages, the use of powered toothbrushes can be recommended for improving oral hygiene in children.