Maxillary Canine Retraction Using Stainless Steel and Titanium-molybdenum Alloy Wires in TAD-supported Segmental Mechanics

The goal of this randomized clinical study is to compare the effectiveness of stainless steel (SS) and titanium-molybdenum alloy (TMA) wires for maxillary canine retraction using TAD-supported segmental mechanics. The main question it aims to answer is: Which wire material, stainless steel or titanium-molybdenum alloy, provides better outcomes in maxillary canine retraction when used with TAD-supported segmental mechanics? Researchers will compare SS reverse-closing loops with TMA reverse-closing loops to evaluate differences in the rate of canine retraction and canine angulation changes during orthodontic space closure. Participants will: * Receive mini-implants/TADs on both sides of the maxillary arch. * Receive a stainless steel reverse-closing loop on one side and a TMA reverse-closing loop on the contralateral side. * Receive the same standardized force of 150 g on both sides. * Visit the clinic every 4 weeks for a total duration of 4 months. * Undergo OPG radiographs before retraction and after the 4-month study period to assess canine angulation.

Inclusion Criteria: * Participants aged 15 to 35 years. * Both male and female participants. * Patients with all permanent teeth present, excluding third molars. * Patients requiring extraction of both maxillary first premolars * Patients with Class I or Class II molar relationship requiring maximum anchorage. * Patients already undergoing fixed orthodontic treatment with a 0.018-inch Roth preadjusted appliance system. * Maxillary canines aligned, symmetrical, and upright before the study. * Patients in the leveling and alignment stage before canine retraction. Exclusion Criteria: * Missing or absent upper premolars. * Previous orthodontic, orthognathic or reconstructive treatment. * Systemic disease contraindicating dental implant placement. * Use of systemic drugs or presence of systemic illness. * Compromised periodontal condition. * Use of anti-inflammatory therapy. * Smokers. * Pregnant female participants.