universidade de são paulo - Faculdade de Odontologia - Unesp

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1) The adherence of Candida albicans was significantly reduced by ArO 2 /70
W and ArSF 6 /70 W plasma treatments when compared to the control
group, regardless the presence or absence of saliva and surface roughness
(smooth or roughened).
2) The hydrophobicity (high water contact angle) of the acrylic resin
evaluated was altered by the plasma treatments. However, after 48 hours
of immersion in water, the mean contact angles of the treated specimens
were similar to those of control specimens.
3) No significant effect of surface roughness and saliva on the adherence of
Candida albicans was detected for all groups evaluated.
Acknowledgements
This research was supported by FAPESP (Grant - 2007/02210-1 and
2007/04917-5) and CNPq (Grant 479252/2007-6). We thank Prof. Peter Hammer
for his assistance with the XPS analysis.
References
1 Verran J, Maryan CJ. Retention of Candida albicans on acrylic resin and
silicone of different surface topography. J Prosthet Dent, 1997; 77:535-39.
2 Nikawa H, Yamamoto T, Hamada T, Rahardjo MB, Murata H. Antifungal
effect of zeolite-incorporated tissue conditioner against Candida albicans growth
and/or acid production. J Oral Rehabil, 1997; 24:350-57.