Cephalometric morphology of Chinese with Class II Division 1 malocclusion

Aim To investigate the craniofacial pattern of southern Chinese children wi th Class II Division 1 malocclusion and to compare with Chinese population norms and Caucasians with Class II Division 1 malocclusions. Materials Lateral cephalograms obtained from 105 Chinese subjects with Clas s II Division 1 malocclusion. Results There were no significant sex differences and subsequently the data were pooled. Except for the maxillary plane angle and the angle of the low er incisor relative to the mandibular plane, all of the selected dental-ske letal angular measurements showed significant differences between Chinese w ith Class II Division 1 malocclusion and Chinese norms. Conclusion Compared with Caucasians, Chinese with Class II Division 1 maloc clusion have more prognathic maxillas,less retrusive mandibles, flatter chi ns, steeper mandibular plane angles and more proclined maxillary incisors.