[Comparative study of craniofacial structure between UCLP and Class III malocclusions].
OBJECTIVE
The aim of this study was to compare the dentocraniofacial morphology between the patients with cleft lip and palate and those with Class III malocclusion without surgical treatment.


METHODS
The sample included two groups, group one consisted of 39 patients with repaired completed or uncompleted unilateral cleft lip and palate, with age ranging from 12 to 15 years; group two consisted of 40 patients with Class III malocclusion without surgical treatment, with age ranging from 12 to 15 years. Cephalometrics analysis was conducted to allow for a quantitative assessment of dentocraniofacial morphology.


RESULTS
The group with unilateral cleft lip and palate showed smaller SNA and SNB angle than those in the Class III group,but the ANB angle showed no significant difference between two groups. Cleft group showed significant downward and backward rotation of the mandible associated with a more obtuse gonial angle. The upper incisors in cleft group were also found to be more retroclined. The inclination of lower anterior teeth showed no difference between two groups.


CONCLUSIONS
The cleft group showed smaller maxilla and mandible than the Class III group, with mandibular plane being clockwise rotated.
Wu
Jun
J
Department of Orthodontics, Ninth People's Hospital, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
Shen
Gang
G
D000293:Adolescent; D002508:Cephalometry; D002648:Child; D002971:Cleft Lip / Q000473:pathology*; D002972:Cleft Palate / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008313:Malocclusion, Angle Class III / Q000473:pathology*; D008334:Mandible / Q000000981:diagnostic imaging / Q000254:growth & development / Q000473:pathology*; D008445:Maxillofacial Development; D011859:Radiography