Photoinitiator content in restorative composites: influence on degree of conversion, reaction kinetics, volumetric shrinkage and polymerization stress.

@article{Pfeifer2009PhotoinitiatorCI,
  title={Photoinitiator content in restorative composites: influence on degree of conversion, reaction kinetics, volumetric shrinkage and polymerization stress.},
  author={Carmem Silvia Costa Pfeifer and Jack Liborio Ferracane and Ronald L Sakaguchi and Roberto R Braga},
  journal={American journal of dentistry},
  year={2009},
  volume={22 4},
  pages={206-10}
}
PURPOSE To determine the influence of rate of polymerization, degree of conversion and volumetric shrinkage on stress development by varying the amount of photoinitiators in a model composite. METHODS Volumetric shrinkage (with a mercury dilatometer), degree of conversion, maximum rate of reaction (RPmax) (with differential scanning calorimetry) and polymerization stress (with a controlled compliance device) were evaluated. Bis-GMA/TEGDMA (equal mass ratios) were mixed with a tertiary amine… CONTINUE READING