완전 편측성 구순구개열자의 하악골 형태와 위치에 관한 측모 두부 방사선학적 연구

Cephalometric Study of the Morphology and Position of Mandible in Complete Unilateral Cleft Lip and Palate Patients

This study was designed to evaluate the morphology and the position of the mandible in the complete unilateral cleft lip and palate patients. Craniofacial skeletal morphology pattern was analyzed on the lateral cephalometric radiographs of the 50 subjects of complete unilateral cleft lip and palate, the 50 normal and 50 class III. Each group was divided into child and adult sub-groups. All the data were tested statistically. The results were as follows: 1. In the comparison with the normal group, complete deft group showed smaller angular, condylar length, clockwisely rotated mandible and larger NMe/SGo(p < 0.01). 2. In the comparison with the class III group, the complete cleft group showed significantly smaller angular, condylar, ramal, body length of the mandible(p < 0.01). 3. As for the position of the mandibular condyle to the cranial base, the class III group was the most anterior, the normal group was the most posterior and the complete cleft group was in the middle(p < 0.05). 4. In the comparison with child group, the normal adult group showed smaller mandibular angle and mandibular plane angle, but not the other two groups. And the complete cleft group and the class III group showed the similar change. The nomal and class III group showed increased XiCd/XiPog, but not the complete cleft group(p < 0.01).