TY - JOUR ID - 185414 TI - Infra-zygomatic mini screws compared to high pull headgear for distalization and intrusion of maxillary molars in growing patients with class II malocclusion: a randomized clinical trial JO - Advanced Dental Journal JA - ADJC LA - en SN - 2636-302X AU - Afify, Ahmed AU - El Dakroury, Amr AU - El Dawlatly, Mostafa AU - El Kordy, Sherif Ali AD - Department of Orthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt. Y1 - 2021 PY - 2021 VL - 3 IS - 3 SP - 135 EP - 150 KW - Infra-zygomatic KW - Mini-screws KW - headgear KW - Distalization KW - Class II DO - 10.21608/adjc.2021.55081.1088 N2 - Objective: The aim of the present randomized clinical study was to evaluate the distalization and intrusion effect of an Infra-zygomatic mini-screws supported appliance and compare it with high pull headgear appliance in treatment of growing patients with class II malocclusion. Methodology: 22 growing boys aged between (10 to 12 years) with class II div 1 malocclusion randomly divided to 2 equal groups. The first group treated with high pull headgear with acrylic splint and the second one treated with an Infra-zygomatic mini-screws supported appliance. The treatment duration was 8 months for both groups. Lateral cephalometric radiographs were taken before and after the treatment for each patient to be analyzed. Results: The maxillary first molar distalization was 2.58 ± 2.31 mm in head gear group and 1.53 ± 2.83 mm in mini-screws group. There was no significant maxillary first molar intrusion in both groups. There were no significant differences between the two groups. Conclusions: The mini-screws supported appliance can be used as the fixed replacement of the removable high pull headgear appliance with no need for patient cooperation. UR - https://adjc.journals.ekb.eg/article_185414.html L1 - ER -