Avaliação do monômero residual de resinas acrílicas utilizadas para prótese ocular, polimerizadas convencionalmente e por energia de microondas
Abstract
Este trabalho objetivou comparar a quantidade de monômero residual das resinas acrílicas utilizadas para confecção de prótese ocular, termopolimerizável incolor (grupo controle) e Onda- Cryll incolor após a polimerização convencional (MC) e com energia de microondas (MW) respectivamente. Para o experimento foram confeccionados três corpos-de-prova para cada tipo de resina e período de investigação, num total de 30 corpos-de-prova, os quais foram submetidos a ensaios titulométricos nos períodos de 5, 30, 60. 120 e 1.440 minutos (24 horas) após a demuflagem. A resina acrílica termopolimerizável incolor apresentou índices inferiores de concentração de monômero residual em relação à resina acrílica Onda-Cryll incolor. A resina acrílica polimerizada por microondas apresentou baixos índices de concentração de monômero residual, porém um pouco superiores (até 120 minutos) em relação à resina termopolimerizável incolor. Ambos os materiais apresentaram valores numéricos estatisticamente semelhantes de concentração de monômero residual no período de 1440 minutos (24 horas). Uma técnica de confecção de prótese ocular através de forno de microondas é exeqüível, pois os acrílicos apresentam concentrações normais de monômero residual após 120 minutos da sua polimerização, em relação ao grupo controle.
UNITERMOS: prótese ocular; resina acrílica; monômero residual.
SUMMARY
The objective of this work is developing an experimental technique to make an ocular prosthesis with many kinds and forms of acrylic resin process. The author made a comparative evaluation with colorless residual monomer thermo polymerizing in the conventional process with acrylic resin microwave oven polymerization. With 15 proof bodies for each one of the three types and forms of resin, the author made, naturally all togheter, 30 proof bodies. The process follows rigorously the fabrication instructions. All of them, had been submitted a titulometric experiment by periods of 5, 30, 60, 120,1440(24 hours), after unflasked. The thermo polymerizing colorless acrylic resin was the one showing less concentration of residual monomer. The results of experiment show higher concentration of residual monomer, until 120 minutes after the polymerizing process. With 8 hours approximately the technique is executable for ocular prosthesis construction and with normal and stable monomer residual concentration.
UNITERMS: ocular prosthesis; acrylic resin; residual monomer.
Downloads
Published
Issue
Section
License
COPYRIGHT
The submission of originals to Odonto Ciência implies the transfer by the authors of the right for publication. Authors retain copyright and grant the journal right of first publication. If the authors wish to include the same data into another publication, they must cite Odonto Ciência as the site of original publication.
CREATIVE COMMONS LICENSE
As this journal is open access, the articles are allowed free use in scientific and educational applications, with citation of the source.
According to the type of Creative Commons License (CC-BY 4.0) adopted by Odonto Ciência, the user must respect the requirements below.
You are free to:
Share — copy and redistribute the material in any medium or format.
Adapt — remix, transform, and build upon the material for any purpose, even commercially.
However, only under the following terms:
Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests Odonto Ciência endorses you or your use.
No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
For more details on the Creative Commons license, please follow the link in the footer of this website.