目的对锥形束CT展开讨论,分析其在儿童上颌前部埋伏多生牙定位拔除中的应用效果。方法选取我院2013年1月~2014年7月采用普通X线检查确定有埋伏多生牙的患者29例作为研究对象,行锥形束CT扫描并三维重建,确定颌骨内的确切位置。结果锥形束CT能准确定位多生牙的数量、形态、唇腭向及与邻近组织空间位置关系。结论锥形束CT可直观、准确定位多生牙,为临床诊断及治疗提供准确信息,对临床手术路径的确定、治疗方案的选择有重要的应用价值。 Objective To discuss the cone beam computed tomography (CT) and analyze its application in the localization and removal of ambush prenatal teeth in the anterior maxilla of children. Methods From January 2013 to July 2014 in our hospital, 29 patients with ambush and asymptomatic teeth determined by X-ray examination were selected as object of study. The exact location in the jaw was determined by conical beam CT scan and 3D reconstruction. Results Cone beam CT can accurately locate the number, morphology, lip and palate orientation and the spatial relationship with the adjacent tissue. Conclusion Conical beam CT can intuitively and accurately locate as many as possible teeth and provide accurate information for clinical diagnosis and treatment. It has important application value in determining the surgical path and selecting treatment options.