Opportunistic microorganisms in individuals with lesions of denture stomatitis

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Pereira, Cristiane Aparecida [UNESP]
Toledo, Bruna Costa [UNESP]
Santos, Camila Teles [UNESP]
Pereira Costa, Anna Carolina Borges [UNESP]
Back-Brito, Graziella Nuernberg [UNESP]
Kaminagakura, Estela [UNESP]
Jorge, Antonio Olavo Cardoso [UNESP]

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The aim of this study was to isolate, quantify, identify, and compare opportunistic microorganisms (Candida and Staphylococcus genera and Enterobacteriaceae/Pseudomonadaceae families) from prosthesis-fitting surfaces, the hard palate, and mouth rinses of individuals wearing removable maxillary prosthesis with (50) and without (50) lesions of denture stomatitis (DS). The strains were collected and identified using phenotypic, biochemical and molecular tests. The counts of microorganisms were significantly higher in the group of individuals with DS (P < 0.05). C. albicans was the most frequently isolated yeast species in both groups, following by C. tropicalis and C. glabrata. Six isolates were identified as C. dubliniensis. S. aureus and S. epidermidis were the most frequent Staphylococcus species in both groups. Klebsiella pneumoniae was the predominant species in both groups. The association between Candida spp. and bacteria isolated in this study with DS suggests that these microorganisms may play important roles in the establishment and persistence of this disease. © 2013 Elsevier Inc.



Candida, Denture stomatitis, Enterobacteriaceae, Pseudomonadaceae, Staphylococcus, adult, bacterial strain, bacterium identification, bacterium isolation, Candida albicans, Candida dubliniensis, Candida glabrata, Candida tropicalis, clinical article, controlled study, female, hard palate, human, Klebsiella pneumoniae, male, nonhuman, phenotype, priority journal, Staphylococcus aureus, Staphylococcus epidermidis, stomatitis, tooth prosthesis

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Diagnostic Microbiology and Infectious Disease, v. 76, n. 4, p. 419-424, 2013.