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Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN: 1677-3225
Vol. 5, No. 19, 2006, pp. 1213 - 1216
Bioline Code: os06038
Full paper language: English
Document type: Research Article
Document available free of charge

Brazilian Journal of Oral Sciences, Vol. 5, No. 19, 2006, pp. 1213 - 1216

 en Influence of shade and composition in the generation of heat during the dental composite photoactivation
Consani, Simonides; Fariña, Evelyn Desirée Paez; Guiraldo, Ricardo Danil; Sinhoreti, Mario Alexandre Coelho & Correr-Sobrinho, Lourenço

Abstract

The study evaluated the effect of shade and composition in the production of heat during the dental composite photoactivation. Filtek Z 250 and Esthet X in the shades A3 and B1 and Filtek Flow and Natural Flow in the shades A3 and B2 were used. The temperature was registered using a type-K thermocouple connected to a digital thermometer with an accuracy of 0,1°C. A chemically polymerized acrylic resin base was built as thermocouple guide and support for a dentin disk, obtained from bovine tooth to simulate the remaining dentin in the cavity. On the acrylic resin base was adapted a matrix made of silicone. A light source emitted by XL 2500 halogenic lamp unit was used for a photoactivation time of 20 seconds. Eight groups were established in agreement with the interaction materials and shades (n=10). Obtained values were submitted to ANOVA and the averages to Duncan's test (5%). The results showed that there was not statistical difference among the averages of the temperature increases in the same composite with different shades. There was statistical difference among the averages of the temperature increases in different composites in the same shades.

Keywords
photoactivation, rise temperature, resin composites, colors

 
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