摘要
目的研究处于恒牙列初期的骨性Ⅱ类错，随着颌骨自然生长调整畸形程度发生的变化，指导早期矫治。方法随机抽取临床４０例恒牙列初期骨性Ⅱ类关系错患者，进行近一年时间的观察。对观察前、后患者的侧位Ｘ线头影片做Ｄｏｗｎｓ法测量分析及配对ｔ检验。结果处于恒牙列初期的女性患者，上下颌骨关系无明显自然改变，但上颌切牙表现为更加前突，下颌切牙会更加舌倾；男性患者的下颌骨表现为向前、向上方向旋转生长，其变化数值虽有统计学意义，但改变的绝对数值不大。结论对骨性Ⅱ类关系错患者需要及早施以矫治。
Objective To study the craniomandibular growth of skeletal class Ⅱ patients in early permanent dentition so that demonstrate malocclusion development and decide orthodontic treatment opportunity. Methods 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. Results 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. Conclusion It is necessary to treat skeletal class Ⅱ deformities early.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
1998年第2期116-118,共3页
Chinese Journal of Stomatology
关键词
恒牙列
X线片
骨性错He
错HE
Permanent dentition X ray film Malocclusion, skeletal
