Avaliação da rugosidade superficial de resinas acrílicas polimerizadas por energia de micro-ondas: influência da incorporação de nanopartículas e da desinfecção

• Autor(a) principal: Gil, Gabriel Ricardo Ferreira [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/149683; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-01-31/000867752.pdf
• topic: Resinas acrílicas; Propriedades de superfície; Polimerização; Microondas; Acrylic resins

Among the properties required for materials used as basis for denture, those related to the surface such as roughness, hardness, electrostatic interactions and surface tension are of great clinical importance since it can cause biofilm adhesion. The surface roughness of the acrylic resin contributes heavily to the adhesion and retention of Candida albicans, of particular importance in the etiology of stomatitis. Irregularities in the surface of the acrylic resin may function as a reservoir of microorganisms that, even after conventional cleanup procedures, remain adhered to it. A strategy to improve the properties of acrylic resins is the use of nanotechnology. This approach has attracted great interest both academic and industrial, due to the remarkable increase in mechanical properties. In this context, the nanoparticles have the potential to significantly modify the properties of a polymer matrix. This potential depends strongly on the physical nature of each particle type. Patients undergoing prosthetic procedure are exposed to pathogenic microorganisms may occur development of diseases and cross infection between patients and dental staff. Daily disinfection of prosthetic devices should not promote change in the physical and mechanical properties of acrylic resins. Based on these considerations the purpose of this study was to evaluate the influence of the incorporation of nanoparticles on the surface roughness of acrylic resin polymerized by microwave Vipi-Wave