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目的研究前方牵引联合快速扩弓矫治反颌的临床疗效。方法从临床收集乳牙期、替牙期、3～12岁无先天性颅颌面畸形,之前未接受过任何正畸治疗的骨性ClassIII错颌67例患者,采用前方牵引联合快速扩弓进行治疗。分别对治疗前后的头颅侧位片进行定点测量,然后取均值以减小误差。分三个方面比较:同一年龄组内不同性别的治疗前后效果差异;不考虑年龄因素,不同性别在治疗前后效果差异;不考虑性别,不同年龄在治疗效果差异。结果比较不同年龄组的男女性别差异时发现:除了3～6岁组的颌平面occlusalplantoPH有显著性差异外,其余未见显著性差异。结论垂直向的显著性变化常见于3～6岁;除了前面高ANS-Me,在9～12岁未见显著性垂直向改变;这些垂直向的变化,比如FMA、GoGn-SN、面轴角、ANS-Me尽管是反颌改善的部分机制,但对面中分发育不足的反颌没有直接的益处;在不同年龄组,未见显著性性别差异,仅在3～6岁组可见牙合平面的旋转方向存在性别差异。
Objective To study the clinical effect of frontal traction combined with rapid protraction on the treatment of anti-jaw. Methods A total of 67 patients with Class III malocclusion without congenital malformation who had primary congenital cranio-maxillofacial deformities from 3 to 12 years old were enrolled in this study. They were treated with anterior traction combined with rapid protraction . Before and after treatment of cephalometric films were sentinel measurements, and then take the average to reduce the error. Divided into three aspects: within the same age group before and after treatment of different genders differences in effect; regardless of age, gender differences in the treatment before and after the effect; regardless of gender, age difference in the treatment effect. Results When comparing gender differences in different age groups, no significant differences were observed except for occlusalplantoPH in the jaw plane of 3-6-year-old group. Conclusion The significant changes in the vertical direction are common in patients aged 3 to 6 years. There was no significant vertical change between 9 and 12 years except for the previous high ANS-Me. These vertical changes such as FMA, GoGn-SN, Although ANS-Me is a partial mechanism of anti-mandibular improvement, there is no direct benefit to the inverse scale of under-development in ANS-Me. There are no significant gender differences in different age groups. Only 3 to 6 years old, There is a gender difference in the direction of rotation.