✦ LIBER ✦

A composite model of the elastic behavior of dental amalgam

✍ Scribed by Katz, J. Lawrence ;Grenoble, Dale E.

Publisher: John Wiley and Sons
Year: 1971
Tongue: English
Weight: 503 KB
Volume: 5
Category: Article
ISSN: 0021-9304
DOI: 10.1002/jbm.820050507

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✦ Synopsis

A model describing the elastic behavior of dental amalgam as a composite material has been developed using elastic theory for quasi-homogeneous, quasiisotropic systems. The elastic constants of the composite amalgam can be computed using Voigt-Reuss and Hashin-Shtrikman methods if the relative volume fractions and the elastic constants of the constituent phases are known. This model also relates the elastic behavior of the amalgam to manipulation during preparation. The elastic constants of several spherical and cut amalgams, as well as the constituent 7, y,, and y r alloys, have been measured in the 0-50 kilobar range usiIig a solid media pressure apparatus and an ultrasonic inter. ferometer. High pre=ure studies are necessary so that the effects of porosity can be assessed. Calculations based on this model include the effects of porosity as well as the Hg content.

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