アブストラクト(24巻1号:神奈川歯学)

神奈川歯学

Japanese

Title : 顎関節部におけるX線画像の検討 - X線断層像と組織像との関連について -
Subtitle : 原著
Authors : 更家誠, 志村介三
Authors(kana) :
Organization : 神奈川歯科大学口腔外科学教室
Journal : 神奈川歯学
Volume : 24
Number : 1
Page : 59-76
Year/Month : 1989 / 6
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」顎関節部の病変の診査には, 造影を含めて種々のX線撮影, CT, MRI, 関節鏡などの方法が報告されているが, それらには長所と短所があり, 常に応用されているわけではなく, 多くの場合, X線撮影所見を中心に行われるのが現状である. しかし, 顎関節部は複雑な構造からなり, 頭蓋骨と重なり合うなどの条件から, 単純X線撮影法では読影が困難な場合も多く, 経頭蓋側斜方向撮影法では再現性に問題があるといわれている. このため, 一定の深さの断面を描出する断層X線撮影法は画像の再現性も高いことから, 診断への評価は高い. 一方, これらのX線画像を表現する用語は, 従来から慣用的に使用されている傾向があり, 研究者により用語の意味に差違がみられるなどの問題もある. また, X線画像上で読影された異常像が, 同部の組織学的変化をどれほど反映し, 表現しているかという点については, これまでほとんど報告されていない. そのため異常読影所見がただちに病変として診断されてよいかどうか, 臨床的判定に迷う場合も少なくない.
Practice : 歯科学
Keywords : 顎関節, X線画像, 組織像

English

Title : Study on Radiographic Examination in the Temporomandibular Joint - Comparison between tomographic and histological findings -
Subtitle : Original article
Authors : Makoto SARAYA, Kaizo Simura
Authors(kana) :
Organization : Department of Oral Surgery, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 24
Number : 1
Page : 59-76
Year/Month : 1989 / 6
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : Abstract : Radiographic changes in the temporomandibular joint (TMJ) generally mean structural bone changes. However, the TMJ has a complex structure and comparisons of histological and radiographic findings are seldom seen in the literature. The author examined 14 human cadavers, 21 TMJs, with lateral tomography and studied the areas of the radiographs histologically. The results were as follows. 1. Radiographic erosion observed in the depression for the lateral pterygoid muscle and in the posterior part of the condyle generally showed no histological changes. Only two erosions, one in the superior part of the condyle and the other in the anterior slope of the articular fossa, showed histological changes. 2. Radiographic sclerosis observed in the articular eminence and the posterior slope of the fossa revealed no histological changes. Four cases of sclerosis in the superior part of the condyle showed remodelling of the bone. 3. Radiographic osteophyte observed in the antero-superior part of the condyle, revealed remodelling and morphological changes corresponding to the radiographic findings. 4. Radiographic flattening observed in the articular eminence revealed histological remodelling changes that corresponded to the radiographic findings. 5. Radiographic concavity observed in the posterior part of the condyle showed no histological changes in this area. However remodelling of the bone was observed in the superior part of the condyle. In conclusion, radiographic flattening and osteophyte indicated structural bone changes directly. However radiographic erosion and sclerosis must be interpreted with caution, because many cases showed no histological changes and the localization of these radiographic findings was important. Radiographic concavity also must be interpreted with caution, bccause most cases revealed no depression histologically, but showed proliferation of the bone in front of this region. It was also suggested that the technical terms that express radiographic findings must be questioned and discussed still more.
Practice : Dentistry
Keywords :