抄録
In the case of imaging of upper jaw canine and first premolar by panoramic radiography, the shape and position were investigated and compared with that by tangential tomography of the maxillodental area on SCANORA®using the steel ball model.
1. When the incline degree of the occlusal plane on the horizontal light beam of SCANORA was changed from 0°to 30°, round shapes resembling steel balls were gradually changed into oval shapes,and the distance of 2 steel balls was shortened in panoramic radiography. This tendency became clearer away from the occlusal plane.
2. In tangential tomography, the shape and position were not changed independently of the incline degree of the occlusal plane.
3. Panoramic radiography is routinely practiced. If the information of upper jaw canine and first premolar were not sufficient, tangential tomography of the maxillodental area of SCANORA should be carried out.
