A comparative study between crack analysis and a mechanical test for assessing the polymerization stress of restorative composites.

@article{Braga2012ACS,
  title={A comparative study between crack analysis and a mechanical test for assessing the polymerization stress of restorative composites.},
  author={Roberto R Braga and Takatsugu Yamamoto and Kenneth L. Tyler and Let{\'i}cia Cristina Cidreira Boaro and Jack Liborio Ferracane and Michael Swain},
  journal={Dental materials : official publication of the Academy of Dental Materials},
  year={2012},
  volume={28 6},
  pages={632-41}
}
OBJECTIVES To verify the hypothesis that crack analysis and a mechanical test would rank a series of composites in a similar order with respect to polymerization stress. Also, both tests would show similar relationships between stress and composite elastic modulus and/or shrinkage. METHODS Soda-lime glass discs (2-mm thick) with a central perforation (3.5-mm diameter) received four Vickers indentations 500 μm from the cavity margin. The indent cracks were measured (500×) prior and 10 min… CONTINUE READING