Evaluation of Low-Level Laser Therapy with Diode Laser for the Enhancement of the Orthodontic Tooth Movement: a Split-Mouth Study

Abstract

This study evaluated the effect of low-level laser irradiation induces by diode laser on the speed of orthodontic tooth movement of canines submitted to initial retraction. Twenty-four mandibular canines were retracted by using NiTi spring (force of 150 g/side). Thirteen of those were irradiated with a diode laser 980-nm diode laser (Wiser Laser Doctor Smile, Lambda) operating at an 810-nm wavelength (1 W of output power, continuous wave of 66.7 J/cm2) that was equipped with a 0.6-mm optical fiber in continuous-wave mode. The canine retraction was accomplished by using prefabricated coil springs. The right of the mandible was chosen to be irradiated with the laser, whereas the left side was considered the control without laser irradiation. The laser was applied with 0-, 3-, 7-, and 14-day intervals. The amount of canine retraction was measured with a digital electronic caliper while the pain level was prompted by a patient questionnaire. The speed of tooth movement was significantly greater in the laser group than in the control group. The pain intensity was also at a lower level in the laser group. Our findings suggest that diode laser therapy can highly accelerate tooth movement during orthodontic treatment and can also effectively reduce pain level.

Efficacy of Laser Photobiomodulation in Accelerating Orthodontic Tooth Movement in Children: A Systematic Review with Meta-analysis

“…According to a systematic review, LLLT significantly increased osteoclastic but not osteoblastic activity during the initial phases of tooth movement, and that the osteoclastic activity was dose-dependent. 33 Cruz et al, 20 Youssef et al, 22 and da Silva Sousa et al 23 found the significantly greater velocity of tooth movement with LLLT. Limpanichkul et al 21 did not find an increase in tooth velocity.…”

“…Eleven articles remaining were retrieved and their references cross-checked. This yielded an additional 3 articles making a total of 14 articles that were systematically reviewed 12 , 20 – 33 ( Tables 2 and 3 ). Further nine studies were considered for meta-analysis with similar outcomes ( Fig.…”