Evaluation of the Effects of 660-nm and 810-nm Low-Level Diode Lasers on the Treatment of Dentin Hypersensitivity
Journal of Lasers in Medical Sciences,
Vol. 11 No. 2 (2020),
15 March 2020
,
Page 126-131
Abstract
Introduction: Dentin hypersensitivity is a common oral problem that occurs as a short and sharp pain. There are many techniques to treat this condition, the latest of which is laser treatment. The aim of this study was to evaluate the effect of two type of low-power diode lasers (660 nm and 810 nm) on dentin hypersensitivity in order to achieve an acceptable clinical application by adjusting the effective parameters.
Materials and methods: In this randomized, double-blind clinical trial, sensitive teeth of 7 patients were divided into three groups with randomized matching method: group I, treated with 660-nm diode laser irradiation; group II, treated with diode laser 810-nm and group III, the control group. Irradiation parameters for 660-nm and 810-nm diode lasers were a power of 30 mW and 100 mW, respectively, in contact and continuous mode, perpendicular to tooth surface with a sweeping motion. Treatments were carried out in four sessions, at weekly intervals. Data obtained were analyzed with SPSS 22, using one-way ANOVA, repeated measures ANOVA and LSD (least significant difference) test. Significance level was considered as a=0.05.
Results: There were no significant differences in VAS score changes between the two laser groups after the intervention in the first, second and third weeks compared to baseline (P>0.05). These changes in the fourth week were significantly higher in the 810-nm laser group compared to the 660-nm laser group (P=0.04) and in the 660-nm laser group were more than the control group (P=0.02). Mean VAS scores at 1-week, 1-month and 2-month postoperative intervals were significantly lower in 810-nm laser group than 660-nm laser group and in the 660-nm laser group they were less than the control group (P<0.001).
Conclusion: The use of 660-nm and 810-nm diode lasers with a power of 30 and 100 mW, respectively, for 120 seconds was effective in reducing pain in patients with dentin hypersensitivity. However, the effect of 810-nm laser was more long lasting in reducing the dentin hypersensitivity than that of the 660-nm laser.
- Dentin hypersensitivity
- Laser therapy
- Diode laser
How to Cite
References
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