Thermal Expansion of Composite Resins and Sealants

Author:

Powers J.M.1,Hostetler R.W.1,Dennison J.B.1

Affiliation:

1. School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109

Abstract

Linear thermal coefficients of expansion (α) of seven commercial composite resins and four pit and fissure sealants were determined between 0 and 60°C on a thermomechanical analyzer. The thermal expansion curves obtained were nonlinear. Values of α ranged from 26.5 to 39.6 × 10-6 °/C for the composite and from 70.9 to 93.7 x 10-6/°C for the sealants.

Publisher

SAGE Publications

Subject

General Dentistry

Reference10 articles.

1. Standard method of test for coefficient of linear thermal expansion of plastics, D 696-44, in ASTM Standards 1966, part 27, Philadelphia : American Society for Testing & Materials , 1966, p. 256.

2. Penetration of Commercial and Dental Waxes

3. Dalby, John, programmer: BMD8V-Analysis of variance, Ann Arbor, Statistical Research Laboratory, University of Michigan, 1968, 4 p.

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