無菌ラットおよび普通飼育ラットの辺縁歯肉に対する持続的圧迫刺激の影響に関する研究

概要

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The changes of the periodontal tissues irritated mechanically by small active elastic rings on the survical portion of the right first molar were observed microscopically in germfree and conventional JCL : SD strain rats. The results obtained were as follows : 1. Pocket formation, slight infiltration of inflammatory cells into the periodontal tissues and hyaline degeneration or disappearance of the gingival fibers in some degree were noticed in germfree rats. 2. More sever inflammatory changes of the periodontal tissues such as epithelial acanthosis, ulceration, disappearance of the gingival fibers, wide spread inflammatory cell infiltration, alveolar bone destruction and abscess formation in the bifurcation of the teeth in conventional rats were distinctly recognized than in the germfree rats. 3. The depth of the pockets in conventional rats was 0.8 mm to 0.9 mm and about twice of the depth in germfree rats.
特定非営利活動法人日本歯周病学会の論文
1977-12-28