Abstract

Background: Prosthetic soft liners are often used in clinical routine in patients requiring temporary rehabilitation. Objectives: To evaluate the effects of the waterproofing agent on the adhesion of Candida albicans and the superficial properties of prostheticsoft liners, with and without thermopolymerization. Methods: 32 discs of different brands of relining resins (SC and SR) were made. These were randomized into 4 groups (n=8) and submitted to surface roughness tests, profilometry, scanning electron microscopy and goniometry. Another 40 discs of each brand were made to evaluate the adhesion of Candida albicans through the counting of viable cells of Colony-Forming Units (CFU/mL). Results: The absence of waterproofing liquid caused increased roughness of the material, as well as thermopolymerization, which incorporated pores inside. After 24 hours Candida albicans showed reduced biofilm formation capacity and resin SR with glaze and thermopolymerization showed a reduction in the microorganism count when comparing to the other groups after 24 and 48 hours.