Ozone and laser effects on dentin hypersensitivity treatment: a randomized clinical study

 

Published:February 18, 2024DOI:https://doi.org/10.1016/j.joen.2024.02.007

Abstract

Objectives

Evaluate and compare the clinical efficacy of diode laser and gas ozone in the treatment of dentin hypersensitivity (DHS).

Methods

132 teeth from 44 patients with moderate DHS were randomised into three groups according to a split-mouth design. In the diode laser group, the operator irradiated the superficial dentine exposed with 808 wavelength, incremental power from 0,2 to 0,6 W, with 20 seconds of interval. In the gas ozone group, the operator applicated, using a silicon cup, a high dose of ozone (32 g/m³) for 30 seconds. In the placebo group, no therapy was applicated. The subjects underwent a first evaluation of the dentin sensitivity level (T0), directly after treatment (T1), after 3 months (T2), and after 6 months (T3), with a cold air blast challenge and tactile stimuli. The pain severity was quantified according to the Visual Analogue Scale (VAS). Wilcoxon signed-rank test was utilized to scrutinize potential statistical disparities among the treatments. Statistical significance was predetermined at p < 0.05.

Results

A significant decrease of DHS was observed in gas ozone group and diode laser group immediately, after 3 and 6 months of the therapy. After 6 months from the therapy, the sensitivity values in the teeth treated with gas ozone remain statistically lower than those treated with diode lasers (p<0.05).

Conclusion

Laser diode and gas ozone are both efficient as dentin sensitivity treatment. Ozone maintains an invariable effectiveness after 6 months.