Zhou Yanheng, Sun Yannan
Department of Orthodontics, Peking University School of Stomatology, Beijing 100081, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2002 Sep;37(5):381-4.
To Investigate the changes in dentition at each treatment stage and to get some guidelines for clinical work.
Thirty-one cephalometric films of skeletal class III malocclusion patients were analyzed. All the patients were treated by orthodontic and orthognathic surgery.
During presurgical orthodontic treatment, the lower Incisors were decompensated (labially Proclined by 7 degrees ). The upper incisors were uprighted during surgery following rotation of maxilla. After surgery, the upper anterior teeth kept tipping for ward. While the lower anterior teeth were In stable. The dentition was in good occlusion during observing stage.
Lingually tipped lower Incisors were decompensated after presurgical orthodontic treatment in class III malocclusion patients, and lower Incisors kept in stable during observing stage, while the upper incisor had a little bit relapse.
研究每个治疗阶段牙列的变化，为临床工作提供指导。
分析31例骨性III类错牙合患者的头影测量片。所有患者均接受正畸和正颌外科治疗。
术前正畸治疗期间，下切牙得到代偿（唇倾7度）。上颌旋转后，手术中上前牙直立。术后，上前牙持续向前倾斜。而下前牙保持稳定。观察期内牙列咬合良好。
III类错牙合患者术前正畸治疗后，舌倾的下切牙得到代偿，观察期内下切牙保持稳定，而上切牙有轻度复发。
