【摘要】 目的:观察上颌埋伏阻生的倒置弯曲中切牙正畸牵引治疗的效果。方法:选择48例、52颗无萌出能力的上颌埋伏阻生倒置弯曲中切牙,分别经螺旋CT定位、拓展间隙后,行手术联合正畸牵引治疗,观察治疗后的萌出状况、破龈时间、牙髓活力等,以成功、有效和失败评判疗效。结果:本组48例、52颗埋伏中切牙中,成功36颗,占69.23%;有效15颗,占28.85%;失败1颗,占1.9%。牙髓活力检测均正常;未见牙根吸收和黏连。结论:对替牙期儿童的上颌埋伏阻生倒置弯曲中切牙,选择合适的适应证、通过螺旋CT精确定位、恰当的间隙拓展以及活动牵引矫治器的合理应用,是治疗成功的关键。更多还原

【Abstract】 PURPOSE: To evaluate the treatment effect of orthodontic traction on embedded and inverted maxillary bending central incisors.METHODS: Fifty-two embedded and inverted maxillary central incisors without-eruption ability in 48 cases were treated by combined orthodontic traction with surgical treatment after spiral CT positioning and expanding the space,the eruption situation,gingival-breaking time and teeth pulp vitality after treatment were recorded,and the treatment effect was evaluated.RESULTS: Forty-eight cases with 52 impacted upper central incisors were treated with surgical and closed orthodontic traction,successful results were achieved in 36 cases,accounting for 69.23%;15 cases had improvement,accounting for 28.85%;1 case failed,accounting for 1.9%.Pulp vitality tests were all normal and there was no root absorption and ankylosis.CONCLUSIONS: Selecting appropriate cases,precise positioning with spiral CT,proper space expanding and rational application of removable traction appliance are the keys to successful treatment of impacted and inverted maxillary bending central incisors of children in mixed dentition.更多还原