As a result,the main advantage of this methed is not only showing clearly solid figure of jaw bone diseases and assess spatial relationships but also high accuracy and less time.

• 我们认为：使用螺旋扫描所建的三维图像主要优点是：不仅仅能清楚地显示整体的颌骨病变及其周围的关系，且扫描速度快，薄层重建等。