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目的 :研究生长发育期骨性 II类错 高、低角型男性患者的颅面部特征。方法 :随机选择生长发育期骨性 II类错 高、低角型男性患者各 3 0例治疗前 X线头颅定位侧位片 ,进行 2 2项头影测量项目分析。结果 :低角组上齿槽座角 ( SNA)显著增加 ;高角组下齿槽座角 ( SNB)显著减少。下前牙倾斜度 ( L1-Go Gn)两组均明显增加。结论 :低角组上颌相对前突 ,高角组下颌相对后缩 ,两组下前牙均出现明显牙代偿
Objective: To study the craniofacial features of patients with skeletal Class II malocclusion and low-angle type during their growth and development. Methods: Randomly select 30 cases of skeletal Class II malocclusion and low angle type in growth and development, and 30 cases of preoperative X-ray skull positioning lateral radiographs respectively. Results: SNA was significantly increased in low-angle group and SNB was significantly decreased in high-angle group. Lower anterior tooth inclination (L1-Go Gn) were significantly increased in both groups. Conclusions: In the low-angle group, the maxillary protuberance is relatively protuberant and the high-angle group is relatively retarded.