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Tarnish of dental alloys by oral microorganisms
T K Vaidyanathan1, J Vaidyanathan, H A Linke
1Department of Prosthodontics and Biomaterials, University of Medicine and Dentistry of New Jersey, New Jersey Dental School, Newark.
The Journal of Prosthetic Dentistry
|November 1, 1991
Abstract:
Five dental alloys, on exposure to blood and chocolate media with and without inoculated microorganisms, showed varying degrees of tarnish. The results indicated a composition-dependent tarnish behavior of alloys in microorganism-inoculated media, indicating a potential role for the oral microorganisms in inducing clinically observed tarnish of dental alloys. Actinomyces viscosus and periodontal pocket specimens show a similarity in their activity to induce tarnish in base metal-containing dental alloys.