A 3D X-ray study on root changes in orthodontic patients moving upper front teeth upwards and backwards

INTERVENTION: Intervention1: TAD mechanics: Evaluation of apical root resorption during simultaneous intrusion and retraction of maxillary anterior teeth using TADs‐ In vivo CBCT study Control Intervention1: K‐SIR Loop Mechanics: Evaluation of apical root resorption during simultaneous intrusion and retraction of maxillary anterior teeth using K‐SIR loop mechanics: In vivo CBCT study CONDITION: Health Condition 1: ‐ Health Condition 2: M268‐ Other dentofacial anomalies Health Condition 3: K033‐ Pathological resorption of teeth PRIMARY OUTCOME: Evaluation of apical root resorption during simultaneous intrusion and retraction of maxillary anterior teeth using K‐SIR loop mechanics in vivo CBCT studyTimepoint: CBCT scans will be taken at ; T0 just before the application of intrusion and retraction force ; T1 after completion of 4 months of intrusion and retraction SECONDARY OUTCOME: Evaluation of apical root resorption during simultaneous intrusion and retraction ofmaxillary anterior teeth using TAD mechanics In vivo CBCT studyTimepoint: CBCT scans will be taken at ; T0 just before the application of intrusion and retraction ; T1 After completion of 4 months of intrusion and retraction INCLUSION CRITERIA: patients having permanent set of dentitions with complete root formation patients requiring maxillary first premolar extraction patients with Angles class 1 or class 2 malocclusion patients requiring intrusion mechanics for orthodontic treatment