Efficacy of Carrier Motion Appliance in Phase-I Correction of Class Ii Malocclusion in Growing Patients Having Retro Positioned Lower Jaw – A Longitudinal Study

Abstract

Background: Skeletal imbalances, especially mandibular retrusion, are frequently the cause of class II malocclusions. Mandibular growth stimulation is the goal of fixed functional appliances, or FFAs. However, the rotation of the maxillary molars and the position of the mandibular incisors are frequently not precisely controlled by conventional FFAs. The Carriere Motion Appliance (CMA) was created in order to overcome these restrictions. The mandible is advanced and maxillary molar rotation is corrected by this intermaxillary Class II corrector.

Purpose: To assess the skeletal and dental improvements in developing Class II malocclusion patients in rural western Maharashtra who have had their lower jaws retropositioned using the Carriere Motion Appliance.

Material and Method: A prospective longitudinal research involving 29 developing patients between the ages of 12 and 15 was carried out. Patients with Class II malocclusion who presented to the Department of Orthodontics and Dentofacial Orthopedics at Rural Dental College, Loni, with a retropositioned lower jaw and upper molar mesiorotation, had samples taken. The CMA was used to treat the subjects for six months. Lateral cephalograms and study models from before and after therapy were assessed and contrasted.

Results: At the conclusion of phase I treatment with CMA, there were notable alterations in the molar and canine relationship, overjet, and overbite. All of the patients showed a significant rise in both the SNB and ANB angles. Furthermore, a modest distalization and distorotation of the upper molars were noted. It also showed variations in the vertical dimension.

Conclusion: In growing patients with Class II malocclusion and a retropositioned lower jaw, the CMA is efficient and successful in causing skeletal and dental alterations.