Avaliação in vitro das propriedades físicas e mecânicas de duas resinas acrílicas específicas para prótese ocular após imersão em diferentes soluções desinfetantes

• Autor(a) principal: Laurindo Júnior, Murilo César Bento [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/11449/149656; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-01-30/000867447.pdf
• topic: Desinfecção; Polimetil metacrilato; Olhos artificiais; Resinas acrílicas; Desinfetantes; Disinfection

The ocular prosthesis biologically adapted and suitable disinfected due mainly to bring comfort to the patient, through the preservation of the material properties and reduction of ocular microbiota biofilm over time of use by the patient. For this reason, the present study was investigate the microhardness, roughness and surface energy of two ocular prosthesis acrylic resins: colorless and N1, on the influence of different disinfectant solutions and period of disinfection and storage. A total of 220 samples (1.0 cm in diameter and 0.3 cm in thickness ) being 110 acrylic resin for the colorless and 110 acrylic resin for the N1 was made. The samples was disinfected daily during 180 days according to the disinfectant solution used and immersion periods on the disinfectant solutions: immersion in distilled water for 10, 15, 30 min and 6 h (control); immersion in neutral soap for 30 minutes; immersion in Opti -Free Express for 30 min and 6 h; immersion in Efferdent tables for 15 min; immersion in chlorhexidine gluconate 0.5, 2 and 4% for 10 min (each concentration). The experimental trial was conducted by random allocation of treatment (disinfection) to experimental units (samples). Readings microhardness, roughness and surface energy (n = 10) was performed in the baseline period and periods after disinfection and storage of 2 weeks, 60 days and 180 days. Data was submitted to the test of adherence to the normal curve, and applied appropriate statistical test for comparing the average values of tests. We note in the results of N1 a decreased hardness and increased roughness of the chlorhexidine groups and Efferdent (p ˂0,05). And a increase of the surface energy of all groups (p ˂ 0.05). To the colorless resin we noted that chlorhexidine 4% solutions, neutral soap and Opti-Free for 6 hours decreased the hardness (˂ p 0.05). The roughness increased...