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Time-dependent Deformation of Composite Restorative Materials in Compression

University of Western Australia Dental School, 179 Wellington Street, Perth, Western Australia 6000

D.C. Watts

Turner Dental School, University of Manchester, Higher Cambridge Street, Manchester M15 6FH, England

The strain of six composite resins, including microfine and conventional types, has been measured in compression as a function of time. Compressive loads have been used in separate experiments to produce a wide range of applied stress in samples of clinically-appropriate size. The magnitude of visco-elastic response generally decreases with increasing % of filler in the composite. Additionally, the very substantial linear strain, up to 20%, observed in some microfine composites suggests the visco-elastic deformation of both organic filler, as well as resin matrix, at high stress levels. Caution is therefore indicated with regard to the clinical use of microfine restorative materials in high-stress-bearing situations.

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Journal of Dental Research, Vol. 64, No. 2, 147-150 (1985)
DOI: 10.1177/00220345850640021101


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Cock, D.J. Articles by Watts, D.C. Search for Related Content PubMed PubMed Citation Articles by Cock, D.J. Articles by Watts, D.C. Social Bookmarking                         What's this?