Experimental Analysis of Polymerization Shrinkage of Dental Restoration Material in Cavities
The polymerization shrinkage of light-cured composite resin, a dental restoration material, was studied using three different experimental methods. Digital image correlation method was used to examine the shrinkage deformation on the free surface of artificial cylindrical cavities. X-ray CT images and the digital image correlation were employed to measure the shrinkage deformation in the cavities. The shrinkage force was measured at the floor of the cavity using a load-cell, and evaluated as functions of time and the depth of the cavity.
Joong Hee Lee
K. Arakawa "Experimental Analysis of Polymerization Shrinkage of Dental Restoration Material in Cavities", Advanced Materials Research, Vols. 123-125, pp. 319-322, 2010