SITE LINK

口內 X-線操影術에 있어서 失敗의 原因分析에 關한 硏究

치과방사선 1977년 7권 1호 p.27 ~ 30

강용상,

소속 상세정보

강용상 ( ) - 서울대학교 치과대학 부속병원 방사선학과

KMID : 0378219770070010027

Abstract

To insure accuracy in dental roentgenographs, it is important that the patient´s head position and angulation of the x-ray tube. In 1907 Ciexzynski applied the rule of isometry to dental radiography and established that in the production of an accurate image of tooth the central ray must be porjected perpendicularly to a plane bisecting angle formed by the lognitudinal axis of the tooth and the film plane. Proper exposure of the film is a part of the production of a good dental radiograph, and correct processing also makes an essential contribution to the quality of the radiograph.
The author analysed the failure of exposure and processing results, and recommended followings.
1. The patients head must be positioned that occlusal plane are parallel with the horizontla floor.
3. Central ray must be projected to the objective tooth and supporting structure and projected as perpendicularly to tooth axis and film surface as possible.
3. In processing, the temperature of the solution and the processing time must be correct.