Effect of denture-coating composite on Candida albicans biofilm and surface degradation after disinfection protocol

Author(s)

Silva, Matheus Jacobina ^[1] ; de Oliveira, Denise G. ^[1] ; Marcillo, Oscar O. ^[1] ; Neppelenbroek, Karin H. ^[1] ; Lara, Vanessa S. ^[2] ; Porto, Vinicius C. ^[1]

Affiliation

^[1] Univ Sao Paulo, Bauru Sch Dent, Dept Prosthodont, Alameda Dr Otavio Pinheiro Brizola 9-75, BR-17012901 Bauru, SP - Brazil

^[2] Univ Sao Paulo, Bauru Dent Sch, Dept Stomatol, BR-17012901 Bauru, SP - Brazil

• Document type: Journal article
• Source: INTERNATIONAL DENTAL JOURNAL; v. 66, n. 2, p. 86-92, APR 2016.
• Web of Science Citations: 1

Abstract

IntroductionDenture stomatitis is the most common pathology affecting denture wearers and its main cause is colonisation of dentures with Candida albicans. ObjectiveThis study investigated the effectiveness of two commercial composite surface sealants (Biscover((R)) LV and Surface Coat((R))) to reduce C. albicans biofilm colonisation on denture resin, as well as their surface integrity after disinfection cycles with 1% sodium hypochlorite solution. MethodsHeat-cured acrylic resin specimens were manufactured (10 mm x 10 mm x 1 mm). The specimen surfaces were mechanically polished to simulate rough or smooth denture surfaces. Four surface-treatment groups were tested: smooth surfaces {[}0.3 m of mean roughness (Ra)]; rough surfaces (3 m of Ra); rough surfaces treated with Biscover((R)) LV; and rough surfaces treated with Surface Coat((R)). Specimens of each group were randomly divided to undergo immersion in distilled water or 1% sodium hypochlorite for 30 or 90 cycles each. Specimens of all groups in each immersion solution were tested using a crystal violet (CV) staining assay for biofilm quantification and by scanning electron microscopy for visual analyses of surface integrity and biofilm structure. CV assay data were analysed using one-way analysis of variance (ANOVA) followed by Tukey's multiple comparison test (P < 0.05). ResultsThe effectiveness and surface integrity of Biscover((R)) LV-treated surfaces were similar to those of smooth surfaces, whereas Surface Coat((R))-treated surfaces presented a similar performance to rough surfaces in all solutions and cycles. ConclusionThese results suggest the possibility of clinical use of Biscover((R)) LV for denture coating on surfaces in which mechanical polish is not indicated, such as the fitting surface. (AU)

• FAPESP's process: 10/07932-8 - Microbiological, structural, mechanical and physical evaluation of resilient materials modified by the addition of antimicrobial agents for denture stomatitis treatment
• Grantee: Karin Hermana Neppelenbroek
• Support Opportunities: Regular Research Grants