颌骨内埋伏牙的准确定位  

Accurate positioning of impacted teeth in the jaw

作　　者：董杰[1] 王亚亚[1] 余炜伟[1] 

机构地区：[1]郑州大学第一附属医院口腔科,河南郑州450052

出　　处：《河南医学研究》2013年第4期516-518,共3页Henan Medical Research

基　　金：郑州市科技局科技攻关项目(340900531008)

摘　　要：目的:探讨64排螺旋CT三维重建在埋伏牙定位中的临床应用价值。方法:对53例埋伏牙患者拍摄曲面断层片,并对颌面部行64排螺旋CT扫描,利用工作站对图像进行三维重建。结果:共67颗埋伏阻生牙,曲面断层片是二维影像,由于影像相互重叠、放大变形、分辨率低等缺陷,无法准确显示埋伏牙的空间位置;64排螺旋CT重建图像能清晰准确显示颌骨内埋伏牙数量,牙冠牙根形态,唇腭侧位置,周围骨质情况,萌出方向及其与邻牙关系。结论:64排螺旋CT三维重建可清晰显示埋伏牙及其周围结构,定位准确,为临床诊断及治疗提供依据。Objective： To study the clinical value of three-dimensional reconstruction technique of 64-slices spiral CT in locating impacted teeth.Methods： 53 cases were examined by the panoramic radiographs and helical scanning of axial view volume scan CT,then deal with the image by three-dimensional reconstruction technique.Results： The panoramic radiographs is panoramic radiographs,it＇s unable to display the spatial location of impacted teeth,Because of the defect image overlap each other,larger deformation,low resolution;The quantity,morphous of tooth,labial or palatal location,bone situation around,erupted orientation,and the relationship with other teeth in bone of the 67 embedded teeth were clearly displayed by using the 64-slices spiral CT.Conclusion： The exact localization of the embedded teeth and the objective evidence of the treatment plan could be provided by 64-slices spiral CT which will have important clinical application.

关 键 词：埋伏牙 64排螺旋CT 定位 

分 类 号：R781[医药卫生—口腔医学]