种植体支抗辅助舌侧矫治双牙弓前突畸形的临床研究

目的 通过头影测量比较种植体支抗辅助舌侧隐形矫治双牙弓前突患者治疗前后牙颌面结构的变化.方法 随机选取20例双牙弓前突畸形患者,均使用舌侧矫治器配合微螺钉种植体支抗矫治,观察微螺钉种植体的稳定性,并对患者治疗前后的头颅侧位片进行头影测量,评价治疗效果.结果 微螺钉种植体的成功率为97.5％.上颌第一磨牙平均近中移动0.23 mm±0.76 mm（P＞0.05）,上中切牙切端平均远中移动5.31 mm±2.02 mm（P＜0.001）,治疗后U1-SN角度为99.4度.结论 舌侧隐形正畸联合微螺钉种植体支抗治疗双牙弓前突患者,能够有效控制磨牙支抗,在内收上颌前牙的同时能有效控制转矩,达到了良好的治疗效果.

A clinical study of protruding cases by using lingual appliance and mini screw anchorage

Objective To study the dentofacial changes of protruding cases after treatment by using lingual appliance and mini screw anchorage. Methods 20 randomly selected protruding cases were treated by lingual appliance and mini screw anchorage. In order to evaluate the effect of the treatment, the stability of mini screw anchorage were observed and cephalometrics were done, The traditional lingual bracket and the base of the individual lingual bracket were integrated. The manufactured individual lingual brackets were used to treat the patients. The patients included 68 Class Ⅰ , 27 Class Ⅱ and 9 Class Ⅲ cases. Various kinds of malocclusions were included, such as protrusion, open bite, deep bite, cross bite, crowding and impaction. Results The success rate of mini screw anchorage is 97.5%. The upper first molars moved mesially an average of 0. 23 mm. The central incisors moved distally an average of 5. 31 mm. The angle of Ul-Sn was 99. 4°after lingual orthodontic treatment. Conclusions The anchorage of molars can be controlled effectively by lingual appliance with micro-implant. Also the torque of anterior teeth can be controlled effectively and get good results.