Caracterização da superfície de polímeros utilizados na confecção de próteses provisórias após tratamento com glaze fotopolimerizável

• Autor(a) principal: Commar, Betina Chiarelo [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155222; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-04-25/000881124.pdf
• topic: Resinas compostas; Resinas acrílicas; Prótese parcial temporária; Polímeros; Composite resins

The material used for provisional prosthesis confection must present excellent physical properties, aiming a greater longevity against the different conditions that can occur in the oral cavity. Thus, the aim of this study was to evaluate the effect of a glaze on the physical properties of polymers used for provisional prosthesis confection, before and after a thermocycling procedure and an immersion in a staining solution. Four brands of resins used for provisional prosthesis confection were analyzed: Dencor (chemically activated acrylic resin, CAAR) (n = 20), Dencor (heated acrylic resin, HAR) (n = 20), Charisma (n = 20), Structur (n = 20), and Protemp (n = 20). Samples were randomly divided into five groups of composite and acrylic resins. In half of these samples, a mechanical polishing was performed and the other half received chemical polishing, with a light cured glaze. Then, all samples were submitted to thermocycling and immersion in coffee solution for 21 days. Data were submitted to the analysis of variance (ANOVA) followed by Tukey's and Student t tests (α = 0.05). The glaze decreased color change values and increased microhardness values, except for Charisma resin. A greater surface irregularity was observed in samples without chemical polishing. It can be concluded that the polishing with a light cured glaze can be an effective alternative for some materials used for provisional prosthesis confection, promoting physical and mechanical properties improvement and contributing to the success of the treatment