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Type: Artigo
Title: Can nonthermal plasma improve the adhesion between acrylic resin for ocular prostheses and silicone-based relining material?
Author: Nagay, Bruna Egumi
Goiato, Marcelo Coelho
Freitas da Silva, Emily Vivianne
de Medeiros, Rodrigo Antonio
Rangel, Elidiane Cipriano
da Cruz, Nilson Cristino
de Caxias, Fernanda Pereira
dos Santos, Daniela Micheline
Abstract: Investigate the influence of nonthermal plasma (NTP) treatment on the tensile bond strength between heat-polymerized acrylic resin for ocular prostheses and silicone reliner, with and without the use of an adhesive primer. Materials and Methods One-hundred and sixty-four acrylic resin specimens were fabricated and randomly distributed into four groups according to the type of surface treatment: Sofreliner Primer, NTP, Sofreliner Primer + NTP, and NTP + Sofreliner Primer. Two specimens interposed with relining material (Sofreliner) formed one test sample to perform the tensile bond strength tests, before (initial) and after storage (final) in saline solution (37 degrees C, 90 days, n = 10). Surface characterization was performed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The failure type was classified as cohesive, adhesive, or mixed. The data were analyzed statistically using the two-way ANOVA and Tukey test, as well as the chi-squared test (alpha = 0.05), Bonferroni correction (alpha = 0.005), and Spearman correlation coefficient (alpha = 0.05). Results The SEM and EDS analyses showed the presence of a thin, homogenous organic film in the groups treated with NTP. The NTP + Sofreliner Primer group presented the largest bond strength mean values in the initial period (p < 0.05). Sofreliner Primer and NTP + Sofreliner Primer groups presented the first and second largest tensile bond strength mean values in the final period (p < 0.05), respectively. NTP + Sofreliner Primer group also had the largest number of cohesive (70%, initial) and mixed (90%, final) failures. Conclusions The NTP treatment performed before the primer application enhanced the bond between the acrylic resin ocular prosthesis and the Sofreliner silicone-based reliner, even after 90 days of immersion in saline solution
Subject: Resinas acrílicas
Olhos artificiais
Country: Estados Unidos
Editor: Wiley
Rights: Fechado
Identifier DOI: 10.1111/jopr.13078
Date Issue: 2019
Appears in Collections:FOP - Artigos e Outros Documentos

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