光重合型歯冠用硬質レジンの生体組織反応に関する病理組織学的研究

概要

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Following experiment investigated the inflammatory response to photopolymerized crown and bridge resins in the soft connective tissues of rats compared with responses to heating polymeized resin and porcelain. Four kinds of crown and bridge materials, Dentacolor, Cesead, Isosit and Porcelain, were implanted into the doorsal subcutaneous tissue of Wistar rats. The histological reactions of the tissue surrounding implanted materials were investigated after 3 days, 1,2,or 4 weeks and 2 or 8 months. The results are summarized as follows ; The histological reactions in tissues surrounding Dentacolor and Cesead were similar to those surrounding Isosit and Porcelain. The findings in all of the specimen after 3 days showed slight tissue necrosis and round cell infiltration. Scarcely any inflammatory reaction or fibroplastic tissue formation were noted after 7 days. At 2 and 4 weeks after implantation, fibrosis was developing, and at 2 and 8 months after implantation, remarkable fibrous membrane surrounded the implant in all specimens. As a result of this study, both Dentacolor and Cesead responded in a similar manner to Isosit and Porcelain and all of them were considered less irritative to the tissue.
福岡歯科大学学会の論文
1994-03-31