Determination of polymerization shrinkage kinetics in visible-light-cured materials: methods development.

@article{Watts1991DeterminationOP,
  title={Determination of polymerization shrinkage kinetics in visible-light-cured materials: methods development.},
  author={David Christopher Watts and Amanda Cash},
  journal={Dental materials : official publication of the Academy of Dental Materials},
  year={1991},
  volume={7 4},
  pages={
          281-7
        }
}
An instrument for the reproducible measurement of polymerization shrinkage kinetics is described, constructed around a disc-shaped specimen sandwiched between two glass plates. Test specimens of light-sensitive dental restorative materials were irradiated through the lower, rigid plate. The upper, non-rigid plate was readily deflected by an increase of the adhesive stress from the polymerizing and shrinking sample. Deflection was measured by an LVDT transducer and computer-recorded. Dimensional… CONTINUE READING

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