Comparison Between Two Different Loops for Maxillary Canine Retraction

The aim of the study is to evaluate and compare the clinical efficiency of two distinct loop mechanics for maxillary canine retraction, by comparing the rate of orthodontic tooth movement achieved, while assessing other dental parameters.

Inclusion Criteria: * Adults aged 16-25 years. * Class I or II div 1 malocclusion with moderate to severe crowding who are indicated for maxillary premolar extraction. * Good oral hygiene and general health. * Full eruption of maxillary permanent canines and second molars. Exclusion Criteria: * Systemic disease affecting bone remodeling eg.DM * Previous extraction of permanent teeth. * Periodontal disease or radiographic evidence of bone loss. * Previous orthodontic treatment. * Craniofacial anomalies or cleft lip and palate. * Skeletal asymmetry. * Orthodontic cases that could be treated with no indication for extraction * Orthodontic cases that are indicated for extraction of any tooth other than maxillary first premolars.