THE EFFECT OF ALTERNATIVE TECHNIQUE USING HYDRO AIR ABRASION ON ENAMEL SURFACE ROUGHNESS DURING ORTHODONTIC ADHESIVE REMOVAL

Abstract

This research aimed to evaluate and compare enamel surface change in terms of enamel surface roughness after adhesive removal by four different techniques: tungsten carbide bur with low-speed handpiece, hydro air abrasion used with aluminum oxide particles, calcium carbonate particles, and sodium bicarbonate particles. 76 human incisor extracted teeth were collected, evaluated initial surface roughness, and randomly divided into 4 groups (n = 19 for each group). Then, all the samples were bonded and removed adhesive by 4 different methods. 3D profilometer was used to evaluate enamel surface roughness before and after experiment. Data were analyzed using one-way ANOVA, Kruskal-wallis, paired t-test and Wilcoxon signed-rank test. The results of this study demonstrated that significant differences were detected among groups (p = 0.000). The greatest roughness was found in hydro air abrasion with aluminum oxide, followed by tungsten carbide group, hydro air abrasion with sodium bicarbonate group, and hydro air abrasion with calcium carbonate group, respectively. This study concluded that hydro air abrasion technique with calcium carbonate produced the least enamel surface roughness among other groups.