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Type: Artigo
Title: Antimicrobial and protective effects of non-thermal plasma treatments on the performance of a resinous liner
Author: Nagay, Bruna Egumi
Bitencourt, Sandro Basso
Commar, Betina Chiarelo
Silva, Emily Vivianne Freitas da
Santos, Daniela Micheline dos
Rangel, Elidiane Cipriano
Goiato, Marcelo Coelho
Cury, Altair Antoninha Del Bel
Ricomini-Filho, Antônio Pedro
Barão, Valentim Adelino Ricardo
Abstract: Overcoming substantial shortcomings of soft liners as physico-chemical changes and liner-biofilm-related infections remains a challenge in the rehabilitation treatment. In this study, protective non-thermal plasma (NTP) treatments were developed on the soft liner surface to improve its surface and physico-chemical properties and to reduce fungal colonization after biofilm inhibition challenge. Resinous liner specimens (Coe-Soft) were prepared and distributed in 3 groups according to the surface treatments: (1) untreated (control); (2) treated with sulfur hexafluoride-based NTP (SF6); and (3) treated with hexamethyldisiloxane-based NTP (HMDSO). To test the NTP stability and their protective and antimicrobial effect on the liner surface over time, the morphology, chemical composition, roughness, water contact angle, shore A hardness, sorption and solubility were evaluated before and after the specimens were exposed to dual-species biofilm of Candida albicans and Streptococcus oralis for 14 days. Colony forming units and biofilm structure were assessed. Data were submitted to ANOVA and Tukey tests (α = 0.05). Results: Both treatments modified the surface morphology, increased hydrophobicity and roughness of the liner, and were effective to reduce C. albicans adhesion without affecting the commensal health-associated S. oralis. HMDSO presented chemical stability and lower hardness in both periods, whereas SF6 exhibited higher initial hardness than control and the highest sorption; contrarily, similar solubility was noted for all groups.HMDSO-based film showed improved physico-chemical properties and inhibited C. albicans biofilm. Thus, it has potential for use to control candida-related stomatitis and improve liner’s stability even after being exposed to biofilm inhibition challenge
Subject: Biofilmes
Propriedades de superfície
Country: Reino Unido
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.archoralbio.2020.104822
Date Issue: 2020
Appears in Collections:FOP - Artigos e Outros Documentos

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