ラット用下顎関節突起部X線写真撮影装置の開発

概要

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The authors have been making a series of experimental studies in the rat on healing after fracture of the condylar process as well as after removal of the articular disc. However, it was impossible to observe changes in the identical rat with the passage of time. Accordingly, we could only speculate the course of healing with passage of time on the basis of general evaluation of macroscopic and histological findings on the excised mandible. There are many kinds of X-ray apparatus available for standard radiographic observation of experimental animals. However, most of these employ projection from the vertex, which is inappropriate for the observation of the condylar process.: Moreover, detailed lateral observation of a process is impossible because the two opposing processes would overlap.<BR>In order to solve this problem, we developed a rat-fixing apparatus and improved a soft X-ray apparatus (Hitex HA-80R) for lateral projection. Employing these apparatus, we could observe the bilateral condylar processes without overlap. Moreover, we were able to obtain images of high standard and reproduciblity. Thus, it has become possible to make precise morphological observation of the condylar process with the passage of time in the same rat.
社団法人日本口腔外科学会の論文