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目的探讨16层螺旋CT三维重建技术在上尖牙埋伏阻生诊断中的临床应用价值。方法对常规全颌曲面断层片不能明确诊断的埋伏上尖牙48例患者进行16层螺旋CT颌面部螺旋容积扫描,并采用多平面重建,曲面重建,表面遮盖成像和容积再现技术重建图像,以显示埋伏上尖牙的具体情况。结果本组共埋伏上尖牙52颗,16层螺旋CT能准确显示埋伏上尖牙的冠根形态,唇腭向位置,骨质厚度及邻近组织关系。结论 16层螺旋CT对埋伏上尖牙的诊断为选择手术入路进行正畸牵引有重要价值。
Objective To investigate the clinical value of 16-slice spiral CT three-dimensional reconstruction in the diagnosis of obliques of the canines. Methods A total of 48 patients with ambulatory canines, which can not be diagnosed by conventional total jaw flexion, were scanned with 16-slice spiral CT in maxillofacial volume. Reconstructed images were reconstructed using multiscale reconstruction, surface reconstruction, surface occlusion imaging and volume rendering. To show the ambush on the specific situation. Results A total of 52 canines were embedded in this group. The 16-slice spiral CT can accurately display the canine root morphology, the location of the lip and palate, the thickness of the bone and the relationship between the adjacent tissues. Conclusion The 16-slice spiral CT is valuable for the diagnosis of ambushed canines by selecting surgical approaches for orthodontic traction.