One year observation of craniomandibular structure changes of skeletal Class Ii patients in early permanent dentition
Yao, S.; Kazuto, T.; Kooji, H.
Zhonghua Kou Qiang Yi Xue Za Zhi 33(2): 116-118
1998
ISSN/ISBN: 1002-0098 PMID: 11774688 Document Number: 488064
To study the craniomandibular growth of skeletal class II patients in early permanent dentition so that demonstrate malocclusion development and decide orthodontic treatment opportunity. Forty skeletal class II patients in early permanent dentition were selected at random and observed for one year. The lateral cephalometric X-ray films were taken before and after observation for every patient, then Downs analysis and doublet test were made. Female patients' jaws relation didn't change in early permanent dentition, but upper incisors were more protrusive than before, and lower incisors inclined lingualy. Male patients' mandible grew upward and forward, but the absolute value of small change. It is necessary to treat skeletal class II deformities early.