摘要
目的 进一步了解双垫矫治器 (Twinblock)对Ⅱ类错的矫治效果。方法 选择 1 1例AngleⅡ类病人 ,男 6例 ,女 5例 ,最大 1 3岁 ,最小 9.5岁 ,均为替牙期及恒牙早期 ,X线头影测量显示主要为下颌后缩及轻度上颌前突 ,左手腕骨片多数显示为生长发育的高峰前期。结果 平均疗程 7.3个月 ,X线头影测量结果的骨骼改变主要为SNB角增大 ,平均增大 1 .81 9° ,ANB角减小 ,平均减小 2 .438°,经统计学处理有显著差异。结论 双垫矫治器用于早期Ⅱ类的功能性矫治可取得明显的骨骼及侧貌改变。
Objective [WT5”BZ]To investigate the effectiveness of twinblock in the treatment of Class Ⅱ malocclusion.[WT5”HZ]Methods [WT5”BZ]Eleven Class Ⅱ patients(aged 9.5 ～13 years, male 6, Female 5) with mandible retrusion and slight maxillary protrusion were included. Radiographs of the left hand and wrist showed the patients were at the pre pubertal stage. The duration treatment was 7.3 months on average.[WT5”HZ]Results [WT5”BZ]SNB increased with a mean of 1.819° and ANB decreased with a mean of 2.438° , which showed significant difference by statistical analysis.[WT5”HZ]Conclusion [WT5”BZ]Obvious skeletal and profile changes can be achieved with the twinblock treatment in early Class Ⅱ malocclusion.[WT5”HZ]
出处
《口腔正畸学》
2000年第1期31-32,共2页
Chinese Journal of Orthodontics
