In vitro adhesion of Candida glabrata to denture base acrylic resin modified by glow-discharge plasma treatment

Autor(es)

Zamperini, Camila Andrade ^[1] ; Carneiro, Haline de Lima ^[1] ; Rangel, Elidiane Cipriano ^[2] ; Cruz, Nilson Cristino ^[2] ; Vergani, Carlos Eduardo ^[1] ; Machado, Ana Lucia ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, BR-14801903 Sao Paulo - Brazil

^[2] Univ Estadual Paulista, UNESP, Lab Technol Plasmas, BR-14801903 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MYCOSES; v. 56, n. 2, p. 134-144, MAR 2013.
• Citações Web of Science: 12

Resumo

This study evaluated the potential of plasma treatments to modify the surface chemistry and hydrophobicity of a denture base acrylic resin to reduce the Candida glabrata adhesion. Specimens (n=54) with smooth surfaces were made and divided into three groups (n=18): control non-treated; experimental groups submitted to plasma treatment (Ar/50W; AAt/130W). The effects of these treatments on chemical composition and surface topography of the acrylic resin were evaluated. Surface free energy measurements (SFE) were performed after the treatments and after 48h of immersion in water. For each group, half (n=9) of the specimens were preconditionated with saliva before the adhesion assay. The number of adhered C. glabrata was evaluated by cell counting after crystal violet staining. The Ar/50W and AAt/130W treatments altered the chemistry composition, hydrophobicity and topography of acrylic surface. The Ar/50W group showed significantly lower C. glabrata adherence than the control group, in the absence of saliva. After preconditioning with saliva, C. glabrata adherence in experimental and control groups did not differ significantly. There were significant changes in the SFE after immersion in water. The results demonstrated that Ar/50W treated surfaces have potential for reducing C. glabrata adhesion to denture base resins and deserve further investigation, especially to tailor the parameters to prolong the increased wettability. (AU)

• Processo FAPESP: 08/05338-1 - Efeito de um tratamento a plasma sobre uma resina para base de prótese em relação à adesão de candida glabrata
• Beneficiário: Haline de Lima Carneiro
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica