Histopathological study of the effect of pure metals to the periodontal tissues

Nihon Shishubyo Gakkai kaishi
S Iijima

Abstract

In order to investigate biocompatibility of pure metals, which are widely used, the gingival tissues were brought into contact with pure metals. Nine kinds of pure metals, such as gold, platinum, silver, palladium, copper, nickel, zinc, indium and tin were used in the analysis of biocompatibility. With a No. 1/2 round bar, a standardized small cavity was prepared in the mesiolingual cervical portion of the upper first molar. Nine kinds of pure metals powder were inserted into the small cavity of the maxillary root surface in rats. Post operative changes of the gingival tissue were studied histopathologically. The results were as follows: 1. Gold, palladium and indium powder were observed in the lamina propria of the gingiva. Infiltration of cells was not observed around these pure metal powders. Gold, palladium and indium powders showed little cytotoxicity. 2. Zinc powders were not associated with chronic inflammatory charges. Zinc powders were surrounded by an abundance of connective tissue substances. The fragments were surrounded by collagen fibers, but no inflammatory cells were present. Zinc powders showed little cytotoxicity. 3. Platinum and tin powders were not associated with chronic inflammatory changes. These pure met...Continue Reading

Citations

Nov 13, 2010·Folia Histochemica Et Cytobiologica·Monika Łukomska-SymańskaJerzy Sokołowski
Jan 1, 1996·Plastic and Reconstructive Surgery·W Rondo JúniorN Michalany
Jul 1, 1996·Journal of Pediatric Gastroenterology and Nutrition·G MahdiE Hassall

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