Effect of Low Level Laser on Orthodontic Canine Retraction

Inclusion Criteria: * Complete permanent dentition (3rd molars excluded). * The age was ranged from 15 -25 years. * Malocclusion that required extraction of at least maxillary first premolars, followed by canine retraction. * Good oral hygiene and periodontal health. Exclusion Criteria: * Patients who diagnosed to have an indication for non-extraction approach. * Serious systemic diseases and/or long term medications that could interfere with OTM. * Previous orthodontic treatment. * Poor oral hygiene or periodontally compromised patients. * Craniofacial anomalies or history of parafunctional habits.