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目的探讨三维ＣＴ成像技术在颌面部外伤骨折中的临床应用价值，尤其是对颌面部复合、多发骨折的术前诊断和手术计划制定的意义。方法对２８例颌面部外伤性骨折进行螺旋ＣＴ扫描三维成像，其中１２例做术后三维ＣＴ复查。结果１８例术前三维ＣＴ所见均与手术结果相吻合。结论三维ＣＴ成像对ＬｅＦｏｒｔ型骨折具有确诊意义，并有助于颌面部多发、复合骨折术前制定详细手术方案，上颌窦内、外壁同时有多发“断点”并伴发翼突板骨折，是ＬｅＦｏｒｔ型骨折在常规ＣＴ横断面上的表现。
Objective To investigate the clinical value of three-dimensional computed tomography in the treatment of maxillofacial traumatic fracture, especially for the preoperative diagnosis and operative planning of maxillofacial complex fracture. Methods Twenty-eight maxillofacial traumatic fractures were scanned by three-dimensional spiral CT and three-dimensional CT was performed in 12 cases. Results 18 cases of preoperative three-dimensional CT findings are consistent with the surgical results. Conclusions Three-dimensional CT imaging has definite diagnostic value for LeFort type fractures and is helpful for the maxillofacial multiple fractures. Before the complex fractures, a detailed surgical plan should be developed. The internal and external walls of the maxillary sinus also have multiple “break points” with the fracture of the wing plate. LeFort fracture in the performance of conventional CT cross-section.