A Comparative Study Between Modified Miniscrew-Assisted Rapid Palatal Expander And Modified Rapid Palatal Expander in Molar Distalization Using Cone- Beam Computed Tomography

Inclusion Criteria: * Presence of permanent dentition * Skeletal Class I * Dental Class II molar relationship with moderate dental crowding * Crowding \>4mm * Good oral hygiene * Healthy periodontal condition Exclusion Criteria: * Presence of craniofacial syndromes or cleft palate * History of previous orthodontic treatment * Poor oral hygiene or active periodontal disease * Contraindications to CBCT imaging (e.g., pregnancy, inability to remain still during the scan)