Resistência à flexão de uma resina acrílica após a incorporação de um polímero antimicrobiano

• Autor(a) principal: Oliveira Júnior, Norberto Martins de [UNESP]
• Data de Publicação: 2011
• Outros Autores: Paleari, André Gustavo [UNESP], Rodriguez, Larissa Santana, Marin, Danny Omar Mendoza [UNESP], Pero, Ana Carolina [UNESP], Compagnoni, Marco Antonio [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.revodontolunesp.com.br/article/51ae4aa71ef1faca3d00369d; http://hdl.handle.net/11449/125759
• topic: Antimicrobial agents; Acrylic resins; Denture bases; Denture complete; Acrylic resin; Resina acrílica; Polímeros; Antimicrobiano

Introduction: The incorporation of antimicrobial agents in acrylic resins can be an alternative to prevent denture stomatitis in partial or complete denture wearers. However, these agents can affect the mechanical properties of denture base acrylic resin. Objective: This study investigated the effect of incorporation of antimicrobial polymer  2-tert-butylaminoethyl  methacrylate (PTBAEMA) on flexural strength of an acrylic resin. Material and method: Rectangular specimens were from a denture base acrylic resin (Lucitone  550) containing  0% (control), 1, 2.5, 5 and 10% of PTBAEMA. Data of flexural strength were evaluated by one way ANOVA, followed by Tukey  test (a  =  0.05). Result: It was observed that flexural strength significantly decreased (p  <  0.05) after the addition of PTBAEMA: 0% (91.3 ± 13.7A), 1% (71.4 ± 7.7B), 2.5% (9.4 ± 1.5C); 5% (7 ± 1.7C) e 10% (7 ± 1.2C). Conclusion: Flexural strength was detrimentally affected after incorporation of PTBAEMA. Future studies are necessary to evaluate if the 1% concentration allows clinical application for the acrylic resin studied, since flexural strength obtained was within ISO recommendations.