抄録
Currently, three-dimensional image of jaw bones are required in implant operation. Previously, we recognized this concept and performed Multilayer Cross-sectional Tomography of jaw bones with a 13-mm metal guide pin placed in jaw bones. The relationship of fixtures with anatomical structures(maxillary sinus, mandibular canal, lingual cortex etc.)can be obtained by this tomography.
In this article, the advantage of our method, typical clinical cases and comparison with different methods of other institutions are presented. CT scanning is used frequently in diagnosis of jaw bones, but Multilayer Cross-sectional Tomography is considered to be more useful than CT scanning. Exact CT scanning can show jaw bones more precisely and offer more detail information. However, in CT scanning, guide pin made from metal fragments cannot be used.
In implant surgery, obtaining the relationship of jaw bones and anatomical structure with fixtures is more useful than obtaining the detailed shape of jaw bones.
