アブストラクト(24巻2号:神奈川歯学)

神奈川歯学

Japanese

Title : 歯周炎における歯周組織血管網の立体的観察
Subtitle : 原著
Authors : 甲斐嘉六, 高橋和人
Authors(kana) :
Organization : 神奈川歯科大学口腔解剖学教室
Journal : 神奈川歯学
Volume : 24
Number : 2
Page : 273-289
Year/Month : 1989 / 9
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「はじめに」慢性辺縁性歯周組織炎は一般的に歯槽膿漏症と呼ばれている疾患で, これに関する研究は従来から種々な分野において報告されてきた. 形態学的研究も積極的に行われ, 数々の業績を残してきた. この歯周炎を微小循環系, 特にその血管構築の変化という視野から検索した研究によると, 歯肉に炎症が起こると内縁上皮にいち早く病理, 生理学的変化が現われてくるという. しかしながら, これらの論文では歯周組織全体の血管構築の変化についてではなく, 歯周炎に伴う歯肉の血管構築の変化のみを観察し, 咬合圧に最も強く影響を受ける歯根膜内の血管構築の変化については触れられていない. そこで本論文は病変が最初に現われる内縁上皮直下の血管網の観察と同時に歯根膜の血管網について, 歯周組織の血管網が慢性の歯周炎によってどのように変化するかを全体的, 立体的に観察した. 炎症により内縁上皮に病的変化が現われることは, 内縁上皮直下の血管網にも形態的変化が現われて来ることを示唆している.
Practice : 歯科学
Keywords : chronic marginal periodontitis, vascular architecture, resin casting method, SEM

English

Title : SEM Study of Vascular Architecture of Periodontal Ligament under Chronic Marginal Periodontitis
Subtitle : Original article
Authors : Karoku KAI, Kazuto Takahashi
Authors(kana) :
Organization : Department of Oral Anatomy, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 24
Number : 2
Page : 273-289
Year/Month : 1989 / 9
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : Abstract : The present study was carried out by fabrication of microcorrosive resin cast to investigate the vascular changes of periodontium of dogs, mandibular incisors with severe mobility and deep pocket formation concomitant with suppuration and alveolar bone loss. With aid of the dissolution of soft tissues by protease, alveolar bone remained left with resin cast of specimen, which then was referred for scanning electron microscopic examination. Results were as follows : 1. The vasculature of inner gingival epithelium which originally appeared as a flat, mesh-like network underwent a conformational change and turned out to be a vasculature with glomerulus-like loops due to chronic inflammation. 2. No remarkable change was ever identified in vasculature of periodontal ligament surrounding cervix of tooth. 3. Certain parts of vasculature of periodontal ligament disappeared, which combining with the occlusion inadicated the occurrence of occlusal trauma. 4. Exposed alveolar bone surface where the periodontal vasculature disappeared showed an amorphous, flat surface. Quite contrast to this, the surface of alveolar bone on which the vasculature is located appeared undergoing a resorptive process. 5. Accordingly, the damage occurred in periodontium was not merely due to chronic inflammation but to the accompanying occlusal trauma which was supposed to be a predominant factor.
Practice : Dentistry
Keywords : chronic marginal periodontitis, vascular architecture, resin casting method, SEM