Comparative Studies on the Orthodontic Changes in the Crossbite Between Unilateral Cleft Lip/Pa l a t e and Non-cleft Patients.

at the mixed dentition stage

Abstract

From the clinical view point, one of the important treatment objectives of the orthodontic treatment for cleft lip/palate patients is to improve the anterior crossbite.
The changes of their profile revealed in their ce p halometric radiographs in UCLP group before and after the anterior crossbite correction were compared to non - cleft patients with the same conditions.
The results were as follows:
1. In UCLP group, correction of the anterior crossbite is mainly due to the labial proclination of maxillary incisors.
2. Clockwise rotation of the mandibles and lingual inclination of the lower incisors were observed in both groups.
3. The limitation of the profile changes in the UCLP group suggest that the maxillary protraction technique or other disciplines must be considered for these malformed occlusions.