上颌埋伏阻生中切牙的影像学分类  

Imaging classification of maxillary impacted central incisors

作　　者：王镶珊[1] 胡荣党[2] 

机构地区：[1]浙江省杭州市萧山区第一人民医院口腔科,浙江杭州311200 [2]温州医学院附属口腔医院口腔正畸科,浙江温州325000

出　　处：《上海口腔医学》2012年第2期185-189,共5页Shanghai Journal of Stomatology

基　　金：浙江省科技厅项目(2010c33124)~~

摘　　要：目的:探讨上颌埋伏阻生中切牙的三维图像分类特征。方法:根据103例上颌中切牙埋伏阻生患者螺旋CT的Dicom原始数据,应用Mimics10.0软件重建出上颌埋伏阻生中切牙的三维图像,分析上颌埋伏阻生中切牙的阻生特点,并对其进行分类。结果:共有埋伏牙106颗。74颗牙为唇侧阻生,倒置阻生33颗,水平阻生28颗,倾斜阻生13颗;20颗为腭侧阻生,倾斜阻生11颗,水平阻生9颗;12颗为垂直阻生。上颌埋伏阻生中切牙根据牙冠的位置在垂直向、冠状向、矢状向可分为3类,即①唇侧埋伏阻生型,包括唇侧倾斜埋伏阻生型、唇侧前后水平埋伏阻生型、唇侧倒置埋伏阻生型;②腭侧埋伏阻生型,包括腭侧倾斜埋伏阻生型、腭侧后前水平埋伏阻生型;③垂直埋伏阻生型。结论:上颌埋伏阻生中切牙从三维方向上可分为3类,每一类又可分多个亚型,包括唇侧(倾斜、前后水平、倒置)埋伏阻生、腭侧(倾斜、后前水平)埋伏阻生和垂直埋伏阻生。PURPOSE： To investigate the classification of maxillary impacted central incisors through three-dimensional images. METHODS： Based on the original Dicom data of the spiral computed tomography of 103 patients with maxillary impacted central incisors, the three-dimensional images of maxillary impacted central incisors were reconstructed by Mimics 10.0 software, and the characteristics were analyzed and a classification was proposed. RESULTS： There were 106 teeth included in this study, 74 teeth were located labially, including 33 inverted impacted teeth, 28 horizontally impacted teeth, and 13 inclined teeth. 20 teeth were located in the palatal side, including 11 inclined teeth and 9 horizontally impacted teeth. 12 teeth were within the bone, which can be divided into three categories based on the position of the crown and in accordance with the vertical, far to near, and horizontal direction. Type I was labially impacted incisor, including 3 subdivisions： labially inclined impacted, labially horizontal impacted and labially inverted i mpaeted. Type 1I was palatally impacted incisor, including 2 subdivisions： palatally inclined impacted and palatally horizontal impacted. Type IH was vertically impacted incisor. CONCLUSIONS： The maxillary impacted incisors can be divided into 3 categories based on three-dimensional directions, and subdivisions can be created in each group including labially （inclined, horizontal, inverted） impacted incisors, palatally （inclined, horizontal） impacted incisor and vertically impacted incisors. Supported by Research Fund of Science and Technology Bureau of Zhejiang Province （2010c33124）.

关 键 词：上颌埋伏中切牙 三维重建 螺旋CT Mimics10.0软件 

分 类 号：R783.5[医药卫生—口腔医学]