The aim of the present study was to compare, a standard efficient technique in accelerating OTM as surgical corticotomy as a gold standard versus surgical corticotomy combined with LLLT in an attempt for further acceleration of OTM.

The study design was a randomized split mouth design to compare, clinically and radiographically, between the two interventions (Corticotomy and Laser versus Corticotomy only) by assessing the rate of maxillary canine retraction achieved in 4 months. Secondary outcomes were to evaluate 1st maxillary molar anchorage loss, changes in tipping, torque and rotations values of maxillary canine and 1st molar. In addition, the impact of both interventions on root resorption was assessed. The present study was carried on 16 female patients. All patients required maxillary 1st premolar extraction and subsequent maxillary canine retraction.

Inclusion Criteria:

1. Post pubertal patients with age more than 17 years.
2. Class I or Class II (Angles' classification) malocclusion cases requiring 1st premolar extraction with moderate anchorage.

Exclusion Criteria:

1. Patients having missing permanent canine teeth in maxillary arch.
2. History of trauma or root canal treatment in maxillary canines.
3. History of previous orthodontic treatment.
4. History of hormonal disorder or syndrome.

Single Blind Endpoint Classification: Efficacy Study