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J Dent Res 53(5): 1033-1039, 1974
© 1974 International and American Associations for Dental Research
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Viscoelastic Properties of Silicone, Polysulfide, and Polyether Impression Materials

A. JON GOLDBERG 1

1 Department of Dental Materials, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48104, USA

The viscoelastic properties of nine silicone-, polysulfide-, and polyether-based impression materials were determined using creep tests. During deformation the materials demonstrated linear viscoelastic behavior. The creep compliance curves, recovery, and percent set were calculated. Permanent deformation in these materials is a result of lack of recovery of elastic deformation as well as viscous flow.






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