Resumo

SOSTENA, Michela Melissa Duarte Seixas et al. Influence of photopolymerization and thermocycling on the adhesion of orthodontic composites. Rev. Bras. Odontol. [online]. 2014, vol.71, n.1, pp. 93-98. ISSN 1984-3747.

This study evaluated the influence of thermal shock, and factors related to photopolymerization on the adhesion of orthodontic accessories to teeth. Three light-cured composite adhesives were used. Two LED light sources were used to cure the adhesive composites at different times of the light irradiation. The samples were divided into two groups, with one group subjected to thermocycling. The adhesion of the composites was evaluated through shear bond strength. Fill Magic and Transbond showed the lowest and highest shear bond strength, respectively. The light-curing unit with higher power density promoted greater shear bond strength. The shear bond strength of the Fill Magic and Ortho Lite adhesives was influenced by thermocycling.

Palavras-chave : hear bonds trength; composites; photopolymerization..