Influence of surface characteristics on the adhesion of Candida albicans to various denture lining materials. (January 2013)

• Record Type: Journal Article
• Authors: Kang, Seol-Hee; Lee, Hyo-Jin; Hong, Su-Hyung; Kim, Kyo-Han; Kwon, Tae-Yub
• Is Part Of: Acta odontologica Scandinavica. Volume 71:Number 1(2013)
• Page Start: 241
• Page End: 248
• Publication Date: 2013-01
• Subjects: Dentistry -- Periodicals; 617.6005
• DOI: 10.3109/00016357.2012.671360
• Languages: English
• ISSNs: 0001-6357

Abstract

<abstract> <title>Abstract</title> <p> <bold> <italic>Objective.</italic> </bold> This study evaluated the influence of surface characteristics of various denture lining materials on the adherence of <italic>Candida albicans.</italic><bold><italic>Materials and methods.</italic></bold> Four different types of materials (tissue conditioners, acrylic and silicone soft liners and hard reline materials) were selected. Disk-shaped material specimens were prepared and their surface roughness values (<italic>R<sub>a</sub></italic>) measured using a profilometer. The contact angles of four reference liquids were measured on the material surfaces and surface energy parameters (total surface energy, acid and base components, degree of hydrophobicity/hydrophilicity) of the materials were calculated in accordance with acid-base theory. Specimens were incubated with <italic>C. albicans</italic> and adhering fungi quantified using the colony counting method. Data were statistically analyzed using a one-way ANOVA with Games–Howell post-hoc test (<italic>α</italic> = 0.05). Pearson correlation analysis was applied to detect correlations between surface characteristics and <italic>Candida</italic> adhesion. <bold><italic>Results.</italic></bold> Significant differences in the surface roughness of the materials were found (<italic>p</italic> < 0.001). The acrylic soft liners were more hydrophilic than the other materials. Overall, the acrylic soft liners and tissue conditioners showed significantly greater <italic>Candida</italic> adhesion than silicone soft liners and hard reline materials (<italic>p</italic> < 0.05). The Pearson correlation analysis indicated that the base component and degree of hydrophobicity/hydrophilicity of the materials (<italic>p</italic> = 0.005/0.008), rather than the total surface energy and the surface roughness (<italic>p</italic> = 0.093/0.057), affected <italic>C. albicans</italic> adherence in a statistically significant way. <bold><italic>Conclusions.</italic></bold> The adhesion of <italic>C. albicans</italic> to denture lining materials can be accounted for in terms of interfacial acid-base interactions.</p> </abstract>