J. Verran et Cj. Maryan, RETENTION OF CANDIDA-ALBICANS ON ACRYLIC RESIN AND SILICONE OF DIFFERENT SURFACE-TOPOGRAPHY, The Journal of prosthetic dentistry, 77(5), 1997, pp. 535-539
Statement of problem. The adhesion of microorganisms to a denture surf
ace is a prerequisite for colonization. Purpose. This study compared t
he retention of Candida albicans on smooth and rough acrylic resin and
silicone surfaces after a washing procedure to determine the effect o
f surface roughness on prosthesis infection and hygiene. Material and
methods. Standardized cell suspensions of C. albicans were incubated w
ith smooth and rough acrylic resin and silicone surfaces for 1 hour at
24 degrees C. After washing, cells that had been retained on the surf
ace were stained with acridine orange and examined with incident beam
fluorescent microscopy. Results. There was no significant difference i
n cell numbers on either of the smooth surfaces. Significantly higher
numbers of cells (p > 0.0005) were observed on roughened surfaces (sil
icone > acrylic resin) than on smooth surfaces. The fitting surface of
the maxillary denture was not polished. Conclusions. Silicones used i
n prostheses were processed against dental stone. The resultant surfac
e roughness may facilitate microbial retention and infection and shoul
d therefore be kept to a minimum.