应用锥形束CT研究上颌阻生尖牙不同牵引方式前后牙根的吸收

发布时间：2018-05-23 11:19

本文选题：锥形束CT + 牙根吸收　；参考：《激光杂志》2014年03期

【摘要】：目的:应用锥形束CT研究上颌埋伏阻生尖牙在两种牵引方式矫治前后牙根长度的变化量,为口腔正畸临床选择牵引上颌阻生尖牙的开窗方法提供参考。方法选取29例上颌埋伏阻生尖牙患者,分成2组,行口腔颌面外科开窗,一组18例患者共18颗上颌埋伏阻生尖牙采用开放式开窗进行开放式牵引,另一组11例患者共14颗上颌阻生尖牙采用闭合式开窗进行闭合式牵引,所有患者均采用相同的直丝弓矫治器进行相同的正畸治疗,对牵引前后上颌阻生尖牙及上颌对侧尖牙牙根长度的变化进行CBCT分析,采用SPSS16.0软件对测量数据进行配对T检验。结果:开放式牵引组和闭合式牵引组的上颌阻生尖牙以及对照侧尖牙矫治前后均有轻度的牙根吸收,但是差异没有统计学意义(P0.05)结论:上颌阻生尖牙采用开放式牵引和闭合式牵引后牙根均有不明显的吸收。
[Abstract]:Objective: to study the change of root length of impacted maxillary impacted teeth before and after two kinds of traction by conical beam CT, and to provide a reference for the choice of fenestration method in orthodontic treatment of maxillary impacted canine. Methods 29 patients with impacted maxillary canines were divided into 2 groups. 18 maxillofacial impacted maxillofacial canines were treated with open distraction with open fenestration in a group of 18 patients. In another group of 11 patients, 14 maxillary impacted canine teeth were drawn with closed fenestration. All the patients were treated with the same straight-wire appliance for orthodontic treatment. The changes of root length of maxillary impacted canine and maxillary contralateral canine were analyzed by CBCT before and after traction. The measured data were tested by SPSS16.0 software. Results: there was slight root resorption in maxillary impacted canine and control canine before and after orthodontic treatment in open traction group and closed traction group. But the difference was not statistically significant (P 0.05). Conclusion: the root absorption of maxillary impacted canine was not obvious after open traction and closed traction.
【作者单位】：重庆医科大学附属口腔医院;川北医学院附属医院口腔科;重庆医科大学附属永川医院口腔科;
【基金】：重庆市卫生局2009年度医学科研计划项目经费资助(项目编号2009-2-147)
【分类号】：R783.5

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