Tarnish of dental alloys by oral microorganisms.
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.
Vaidyanathan
T K
TK
Department of Prosthodontics and Biomaterials, University of Medicine and Dentistry of New Jersey, New Jersey Dental School, Newark.
Vaidyanathan
J
J
Linke
H A
HA
Schulman
A
A
D016924:Actinomyces viscosus / Q000502:physiology*; D000332:Aerobiosis; D000693:Anaerobiosis; D002858:Chromium Alloys / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D003343:Corrosion; D003470:Culture Media; D003722:Dental Alloys / Q000737:chemistry*; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D010165:Palladium / Q000737:chemistry; D010514:Periodontal Pocket / Q000382:microbiology; D012834:Silver / Q000737:chemistry; D013499:Surface Properties; D013997:Time Factors
D002858:Chromium Alloys; D003470:Culture Media; D003722:Dental Alloys; D006047:Gold Alloys; D012834:Silver; D010165:Palladium; D003300:Copper