Resumo

HECK, Mary Aparecida Pereira; KINA, Mônica; VIEIRA, Luiz Clóvis Cardoso  e  ANDRADA, Mauro Amaral Caldeira de. Superficial microhardness evaluation of a photopolymerizable composite resin for the use of contaminated gloves during the restorative act. RPG, Rev. pós-grad. [online]. 2010, vol.17, n.4, pp. 185-190. ISSN 0104-5695.

The mishandling of photopolymerizable composite resins for inserting into the wells, tapping the gloves used in restorative material from the early operative session, has been used. This paper aimed at comparing the superficial hardness of a micro hybrid composite resin, Charisma Heraeus Kulzer, handled with contaminated gloves during the restorative act. A total of 40 cylinders of 3cm in diameter by 3cm of height made of stainless steel matrix. In Group LC, the cylinders were obtained by handling contaminated gloves. Group LCL: like Group LC, but the gloves were cleaned with 70% alcohol for one minute. In Group LNC, decontaminated gloves were used. Group E used a spatula. All groups received increments of 2mm each and they were light cured for 1 minute and 40 seconds on each side of the cylinder apparatus Curing Light 2,500 (3M Espe), with light intensity of 500mW/cm². After 24 hours, the cylinders included were embedded in epoxy resin and polished on polishing with sandpaper and diamond pastes. The Knoop hardness test was carried out, with a static load of 25g for 15 seconds in six random regions. Results were analyzed by ANOVA and Tukey. The hardness averages were: Group LC: 65.61; Group LCL: 61.24; Group LNC: 83.23; Group E: 83.82. There was a statistically significant difference between the groups handled with spatula and decontaminated glove, which showed higher hardness compared to those with contaminated gloves and contaminated gloves cleaned with alcohol.

Palavras-chave : Composite resins; Ccontamination; Hardness.