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J Dent Res 51(4): 1030-1037, 1972
© 1972 International and American Associations for Dental Research
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Thermal Properties of Nonmetallic Restorative Materials

SIMON CIVJAN 1, JOSEPH J. BARONE 1, PAUL E. REINKE 1, and WAYNE J. SELTING 1

1 Division of Dental Materials, US Army Institute of Dental Research, Walter Reed Army Medical Center, Washington, DC 20012, USA

Thermal capacity, diffusivity, and conductivity were determined for nonmetallic restorative materials. Thermal characteristics were affected by composition, powder-liquid ratio, and water sorption. Diffusivity and conductivity followed the same order of values. The least conductive material investigated was an unfilled acrylic resin. Highest diffusivities and conductivities were exhibited by a resin composite. Values obtained with the composite were about the same as those obtained for a thick mix of unmodified zinc oxide-eugenol cement.

Submitted on June 10, 1971






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