Efficacy of Ozonized Sunflower Oil with Tea Tree Oil as Desensitizing Agents in Dental Bleaching: Randomized and Double-Blind Clinical Trial

Background: Dental bleaching is one of the most commonly prescribed procedures in aesthetic dentistry due to its effectiveness and minimally invasive nature. However, a recurrent and challenging side effect is dentin hypersensitivity after the procedure.

Aim: This study aimed to evaluate whether the use of ozonized oil combined with tea tree oil is effective in controlling post-bleaching dentin sensitivity.

Methods: A randomized, double-blind, split-mouth clinical trial was conducted. Participants were divided into two experimental groups (n=29) according to the desensitization protocol: control group: potassium nitrate and sodium fluoride; test group: ozonized sunflower oil combined with tea tree oil. Both groups were applied before dental bleaching with 35% hydrogen peroxide. The obtained data were subjected to statistical analysis using a non-parametric Friedman repeated measures ANOVA test (p < 0.05), followed by the Durbin-Conover post hoc test (p < 0.05).

Results: In the assessment of sensitivity level, there were no statistically significant differences between the test group and the control group. A higher level of sensitivity was observed for the lower arch after one hour of bleaching agent removal in both groups, and the color change was statistically equal between the two groups.

Conclusion: The study concluded that the test group paste was as effective in reducing dental sensitivity caused by dental bleaching as the control group. Additionally, neither of the groups affected the bleaching capacity of hydrogen peroxide.