Comparing Sliding Jig and Retraction Hooks for Moving Upper Teeth Back Using IZC Miniscrews in Class II Malocclusion Treatment

What this Trial Is About

Researchers are evaluating two different methods for moving the entire upper teeth backward maxillary dentition distalization in patients with skeletal Class II malocclusion or maxillary protrusion. This randomized controlled trial compares the use of a Sliding Jig versus Retraction Hooks, both anchored by infrazygomatic crest IZC miniscrews. The study aims to understand differences in treatment speed, tooth movement types, anchorage stability, patient comfort, and side effects. Participants will be randomly assigned to receive either the Sliding Jig or Retraction Hooks method. Both use IZC miniscrews placed near the upper molars to help move teeth backward. Force is applied using nickel-titanium springs every 4 weeks, with treatment continuing until a target tooth movement or 6 months is reached. All patients will have fixed orthodontic appliances with stainless steel wires, and miniscrew stability will be monitored regularly. During the study, patients will have dental scans, X-rays, photos, and models taken to measure tooth movement and anchorage changes. Patient-reported pain and oral hygiene difficulties are recorded through questionnaires. Researchers will track side effects like miniscrew mobility and soft tissue irritation. The primary outcome is the rate of molar distalization measured over about 5 months. The total study duration varies by participant. Data will be analyzed for treatment effectiveness and patient experience.

"Sliding Jigs vs Retraction Hooks for Maxillary Dentition Distalization Using IZC Miniscrews"