多层面螺旋CT的口腔种植体定位研究

A Study for Dental Implantation Canal Localization before Surgery by Multislice Spiral Computer Tomography.

目的 探讨多层面螺旋CT的后处理重建技术在口腔种植体植入术前精确定位及骨量测量的意义。方法测量比较带有3个放射标记物的模板在模型及多层面螺旋CT影像中的距离和相互角度,并在CT影像中虚拟植入种植体,观察种植体植入情况。结果 多层面螺旋CT中影像的放射标记物间的距离与模型上测量数据的差异无统计学意义,并能直观、准确提供种植体植入的骨量信息。结论 使用多层面螺旋CT能在术前准确评估牙槽骨骨量及确定种植体植入位置、方向、大小、长度。

Objective To investigate clinical application of post-image process with multislico spiral computed tomography (MSCT) in localization of the dental implantation canal. Methods The distance and angles in the imaging guide with three ra- diopaque indicators were measured and analysed in the models and images at each implant site with the indicatore and were achie- ved by Multislice Spiral Computer Tomography(MSCT). Results The findings show no statistically significance between imaging and physical measurements. Conclusion MSCT imagings can evaluate the effect of the residual bone and can accurately lacalize the dental implantation canal.