Efficacy of low-intensity laser therapy in reducing treatment time and orthodontic pain: A clinical investigation
American Journal of Orthodontics and Dentofacial Orthopedics
Gauri Doshi-Mehta, Wasundhara A. Bhad-Patil
3/1/2012
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American Journal of Orthodontics and Dentofacial Orthopedics Volume 141, Issue 3, March 2012, Pages 289–297
Introduction
The long duration of orthodontic treatment is a major concern for patients. A noninvasive method of accelerating tooth movement in a physiologic manner is needed. The aim of this study was to evaluate of the efficacy of low-intensity laser therapy in reducing orthodontic treatment duration and pain.
Methods
Twenty patients requiring extraction of first premolars were selected for this study. We used a randomly assigned incomplete block split-mouth design. Individual canine retraction by a nickel-titanium closed-coil spring was studied. The experimental side received infrared radiation from a semiconductor (aluminium gallium arsenide) diode laser with a wavelength of 810 nm. The laser regimen was applied on days 0, 3, 7, and 14 in the first month, and thereafter on every 15th day until complete canine retraction was achieved on the experimental side. Tooth movement was measured on progress models. Each patient’s pain response was ranked according to a visual analog scale.
Results
An average increase of 30% in the rate of tooth movement was observed with the low-intensity laser therapy. Pain scores on the experimental sides were significantly lower compared with the control sides.
Conclusions
Low-intensity laser therapy is a good option to reduce treatment duration and pain.