Am J Orthod Dentofacial Orthop
November 2010
Introduction: In this in-vitro study, we aimed to compare the residual monomers in composites beneath brackets bonded to enamel, using a light-emitting diode (LED) or a halogen unit, and to compare the residual monomers in the central to the peripheral areas of the composite.
Methods: Twenty bovine teeth preserved in 0.1% thymol were used in this study.