Article information
Year 2020 Volume 70 Issue 4 Page 290-296
Title:
Effect of Vitamin C Suspension on Micro Tensile Bond Strength of Non-vital Bleached Dentin to Resin Composite Restoration
Keyword(s):
Antioxidant, Bleaching, Bond strength, Micro tensile, Vitamin C
Abstract:
The aim of this study was to evaluate the effect of vitamin C suspension prepared from vitamin C tablets on micro tensile bond strength of bleached dentin to resin composite. Thirty human premolars were used. Cavities with a width and height of 3 mm and 4 mm depth were prepared. The teeth were then divided into 3 groups. Group 1 (control) consisted of premolars which are restored with resin composite without bleaching. Group 2 consisted of premolars bleached with 35 % hydrogen peroxide, irrigated with 10 % Vitamin C suspension prepared from vitamin C tablets for 10 minutes and then restored with resin composite. Group 3 consisted of premolars bleached with 35% hydrogen peroxide, then restored with resin composite immediately. After restoration, the samples were sectioned and micro tensile bond strength tests were performed with a universal testing machine. The data were analyzed by one-way ANOVA and Tukey’s statistics test at 5 % significance level. Bond strength in each group were statistically different. Group 1 presented the highest bond strength value, followed by group 2 and group 3 consecutively. 10 % vitamin C suspension affected the micro tensile bond strength of non-vital bleached dentin to resin composite by increasing the bond strength. However, the bond strength value was still lower than the unbleached group.