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http://dx.doi.org/10.14476/jomp.2011.36.4.215

Effects of GaAs (904 nm) Low Level Laser Therapy on Dentin Hypersensitivity  

Won, Tae-Hee (Department of Oral Medicine, School of Dentistry, Dankook University)
Kim, Ki-Suk (Department of Oral Medicine, School of Dentistry, Dankook University)
Publication Information
Journal of Oral Medicine and Pain / v.36, no.4, 2011 , pp. 215-224 More about this Journal
Abstract
The aim of the study was to investigate the effects of 904 nm GaAs laser irradiation for patients with hypersensitive teeth and to find the possibility of clinical use of this Low Level Laser Therapy (LLLT) for the control of hypersensitive teeth. Eleven patients visited Dept. of Oral Medicine, Dankook University participated in this study. Each patient contributed at least two or more contralateral pairs of hypersensitive teeth with exposed dentine at cervical surfaces. Total number of teeth used from subjects participated in this study was 50: 25 experimental and control teeth respectively. All participants were treated with 904 nm GaAs diode laser every week during 4 weeks. Tactile and cold (ice stick) tests were carried out before LLLT every week during 4 weeks and 1 week later after the last LLLT by measuring visual analogue scale (VAS) of patients and by measuring a score of electrical pulp tester (EPT) simultaneously. The VAS score in tactile test decreased significantly with time, but there was not statistically difference between those of groups. The score of EPT in the experimental group was significantly higher than that of control group, although there was no change with time. In cold test, there was significant difference between two groups and cold sensitivity of the experimental group significantly decreased with time after every LLL irradiation, compared with that of control group. Based on the results, it is suggested that the 904 nm GaAs laser irradiation could be positively used as an effective, reversible method in treating cervical dentine hypersensitivity.
Keywords
Dentin Hypersensitivity; GaAs; Low Level Laser Therapy;
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