抄録
Local examination before operation, besides checking general condition, is crucial for implant surgery.Information obtained from the existing ways of examination such as inspection, palpation, examination of study casts, and X-ray examination(general filming of dental film and occlusal method and tomography such as orthopantomography)has provided merely superficial two-dimensional pictures and has been difficult to give a three-dimensional view of floor of nasal cavity, floor of maxillary sinus, mandibular canal and mental foramen.
A biggest advantage of the X-ray computed tomography(XCT)over conventional X-ray filming resides in the capability of imaging minute differences in coefficient of X-ray absorption. This also makes it possible to obtain desired sections by means of computerized multiplanar reformation that should be very helpful for the three-dimensional view of inner structure of bone and the examination of bone density.
This time, I performed an XCT examination prior to operation of endosseous implant in addition to the existing local examination before operation.With this examination, I was able to safely perform the operation by analyzing a possibility of endosseous implant and also by producing split casts from the pictures obtained to determine the type and location of insertion of endosseous implant as well location and orientation of implant post.
Now let me report on this case in detail.
