Effect of Low Intensity Laser Therapy (LILT) on MMP-9 expression in gingival crevicular fluid and rate of orthodontic tooth movement in patients undergoing canine retraction: A randomized controlled trial

ConclusionsLILT increases the rate of tooth movement. LILT also has an effect of bio-stimulation as depicted by rise in MMP-9 concentrations in GCF. However, this bio-stimulatory effect is restricted to the initial part of the tooth movement.
Source: International Orthodontics - Category: Dentistry Source Type: research