南方医科大学学报2011，Vol.31Issue(12)：2026-2030,5.DOI:44-1627/R.20111206.1509.004
螺旋CT三维重建在埋伏牙治疗与设计中的应用
Application of spiral CT three-dimensional reconstruction in treatment planning of impacted teeth
摘要
Abstract
Objective To assess the value of three-dimensional (3D) reconstruction in treatment planning of impacted teeth. Methods Thirty-two orthodontic patients with impacted teeth aged from 13 to 17 years were enrolled, including 15 with impacted maxillary canines, 8 with impacted premolars and 6 with second molar impaction and retention. All the impacted teeth were examined by spiral CT scan and 3D reconstruction to determine the 3D position of the tooth in relation to both the crown and root, and the proximity to the roots of other teeth. The data were used for treatment planning and determination of the suitable direction of the orthodontic forces, approaches of surgical exposure, and the position of the attachment to be bonded. Results Normal occlusion was achieved for 15 patients with transposition maxillary canines and 5 with lower position premolar. Three malformed premolars were extracted after traction. For 9 patients with second molar impaction and retention, normal occlusion was achieved after extraction of the third molar or moving the first molar mesial. Conclusion Spiral CT scan and 3D reconstruction can accurately determine the 3D position of the impacted tooth and provide assistance in the treatment planning to achieve a higher success rate of orthodontic correction.关键词
三维重建/埋伏牙/矫治设计Key words
three-dimensional reconstruction/ impacted teeth/ treatment planning分类
医药卫生引用本文复制引用
黄妙琼,冯航,郭伟成..螺旋CT三维重建在埋伏牙治疗与设计中的应用[J].南方医科大学学报,2011,31(12):2026-2030,5.基金项目
广东省科技计划项目(2011B031800026) （2011B031800026）
