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1 University of Southern California, School of Dentistry, Los Angeles, Calif 90007, USA;College of Dentistry, University of Iowa, Iowa City, Iowa; and Laboratory for Crystallographic Biophysics, Rensselaer Polytechnic Institute, Troy, New York
The elastic constants of several commercially available filled and unfilled dental resin restorative materials were determined in the 0 to 50 kilobar range of pressure. Measurements of the velocities of propagation of longitudinal and shear ultrasonic waves were used to obtain the Young's, bulk, and shear moduli and Poisson's ratio as a function of pressure; atmospheric pressure values were obtained by back extrapolation from the high pressure data.
Submitted on November 16, 1973
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