螺旋CT三维重建在上颌骨埋伏牙诊治中的临床评价

摘要

Objective To evaluate the value of three-dimensional surface reconstruction of spiral CT for the buried teeth in maxilla. Methods Three-dimensional surface reconstruction of spiral CT and shaded surface display(SSD) was applied to thirty patients whose impacted teeth couldn’t be judged clearly through the panorama. Results Three-dimensional surface reconstruction of spiral CT and SSD could clearly demonstrate the dental surface image including crown, root neck and root bifurcation in three-dimensional way, labial or palatal location, eruption orientation and relation with dentition. Conclusions The three-dimensional surface reconstruction has important directive significance to make out the operation plan for the buried teeth in maxilla.%　　目的探讨CT三维重建在上颌骨埋伏牙诊治中的应用价值。方法对常规X线片均不能清楚地判断埋伏牙(或阻生牙)形态、位置及与邻牙关系的30例患者应用螺旋CT进行扫描和图像三维重建并采用表面遮盖显示法(SSD)显示埋伏牙的形态、位置及与邻牙的关系。结果经CT三维重建和SSD处理后,30例病例均清楚地显示了埋伏牙的牙体形态、唇腭向位置、萌出方向以及与邻牙的关系。结论螺旋CT三维重建对于上颌埋伏牙手术方案的设计及实施具有重要的指导意义。