経頭蓋側斜方向エックス線撮影法ならびに回転パノラマエックス線撮影法による下顎頭関節面の描出再現性に関する基礎的検討

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Experiments were made on the reproducibility of images of the articular surface of the mandibular condyle by transcranial and panoramic projections were attempted. A sprue fixed in a cross-shape was fixed with an adhesive on the skin above the condyle of each of three volunteer adult men. Pictures were then taken by transcranial projection and by Panoramic projection. Further, orthodontic wire was pasted in line with the anterior limit and the inferior limits of the articular area by the use of three dry mandibles, and pictures were taken by transcranial and panoramic projections. The results showed that the deformation in the transcranial projection was slight in the vertical and horizontal directions, and that the articular surface was only observed the part connecting the mandibular condyle and the incident X ray. In the panoramic projection, there was a slight extension in the vertical direction and a slight contraction in the horizontal direction. Images of the temporomandibular joint taken by panoramic projection were observed as images like fluoroscopy from the front of the opposite side (the part diagonal to the front of the opposite side), and the anterior limit of the articular area was different from the inferior limit of the articular area. The above results allow the condition that it is appropriate to regard images of the temporomandibular joint taken by transcranial and panoramic projections as objects for screening examinations of gross osseous changes as it now done for observations of mild osseous changes of the articlar surface.
北海道医療大学の論文
2005-06-30

経頭蓋側斜方向エックス線撮影法ならびに回転パノラマエックス線撮影法による下顎頭関節面の描出再現性に関する基礎的検討

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