The fungicidal effect of ultraviolet light on impression materials.
The effects of ultraviolet (UV) light on fungi and impression materials were tested. UV light (250 microW/cm2) killed most Candida organisms (10(3) cells/ml) within 5 minutes. UV light (8000 microW/cm2) killed most C. albicans (10(7) cells/ml) within 2 minutes of exposure. The effect of UV light on dimensional change and surface roughness of impression materials (irreversible hydrocolloid, agar, and silicone rubber) was tested. The results showed that neither dimensional change nor surface roughness of the impression materials were affected. The results of this study indicate that UV light disinfects impression materials that are contaminated with Candida organisms.
Ishida
H
H
Department of Prosthetic Dentistry, Hiroshima University, School of Dentistry, Japan.
Nahara
Y
Y
Tamamoto
M
M
Hamada
T
T
D000362:Agar / Q000737:chemistry / Q000528:radiation effects; D000464:Alginates / Q000737:chemistry / Q000528:radiation effects; D002133:Calcium Sulfate; D002175:Candida / Q000528:radiation effects*; D003760:Dental Impression Materials / Q000737:chemistry / Q000528:radiation effects; D004203:Disinfection / Q000379:methods*; D003765:Models, Dental; D012826:Silicone Elastomers / Q000737:chemistry / Q000528:radiation effects; D013499:Surface Properties; D013997:Time Factors; D014466:Ultraviolet Rays
D000464:Alginates; D003760:Dental Impression Materials; D012826:Silicone Elastomers; D000362:Agar; D002133:Calcium Sulfate