فهرست نشریات علمی دسترسی آزاد ایران

Background: With the rise in living standards, the significance of a captivating smile in one’s appearance has become more apparent. On the other hand, tooth bleaching is very popular as a conservative esthetic treatment. Investigating the effect of desensitizing gel before home bleaching on tooth sensitivity and color change.Methods: This clinical trial study was conducted on 30 women assigned into two experimental groups: Control (CG) and Desensitizing (DG) Groups, who were treated with placebo gel and 2% KF desensitizing gel (2% sodium fluoride and 5% potassium nitrate), respectively. The primary color of the upper right central tooth was recorded using a ShadeStar digital colorimeter before bleaching. Tooth sensitivity was evaluated using the Visual Analog Scale on 1, 4, 7, 10, and 14 days. The tooth color was also tested on day 14 and at months 1, 3, and 6 intervals of bleaching.The Friedman, Cochran’s, Chi-Square, and Mann-Whitney U tests were used. A significance level of p < 0.05 was set. Results: Tooth sensitivity was significantly higher in the CG than in the DG at all time points (p<0.05). There was no significant difference regarding the degree of color change in the DG and CG (p>0.05). Intragroup comparison at different time points showed that the difference in color stability at six months after bleaching was significant in the DG (p=0.005) but not substantial in the CG (p=0.585).Conclusion: Desensitizing gel before home bleaching has been found to significantly reduce sensitivity. However, it does not affect color stability.