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Working Time of Polymeric Restorative Materials

Department of Conservative Dentistry, King's College Hospital Dental School, Denmark Hill, London SE5, England

The validity of determining the working times of polymeric restorative materials with the use of rheologic methods in the laboratory has been investigated by measuring the adaptation of polymeric restorative materials to artificial cavities when inserted at 30-second time intervals during their setting reactions. There was a significant deterioration in adaptation during the working times which suggests that small changes in viscosity early in the setting reactions radically affect the materials' mobility.

REFERENCES

• Jacobsen, P.H., and Von Fraunhofer, J.A.: Setting Characteristics of Anterior Restorative Materials, J Dent Res 53: 461, 1974.[Abstract/Free Full Text]
• Bovis, S.C.; Harrington, E.; and Wilson, H.J.: Setting Characteristics of Composite Filling Materials, Br Dent J 131: 352, 1971.[CrossRef][Medline] [Order article via Infotrieve]
• Specification for Resin-Based Dental Filling Materials, London: British Standards Institution, BS 5199, 1975.
• Jacobsen, P.H.: An Assessment of the Influence of the Setting Characteristics of Polymeric Restorative Materials on Their Possible Clinical Behavior, MDS thesis, University of London, 1975.
• Bowen, R.L., and Argentar, H.: Tertiary Aromatic Amine Accelerators with Molecular Weights Above 400, J Dent Res 51: 473, 1972.[Abstract/Free Full Text]

Journal of Dental Research, Vol. 55, No. 2, 244-251 (1976)
DOI: 10.1177/00220345760550021401


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map 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 Jacobsen, P.H. Search for Related Content PubMed PubMed Citation Articles by Jacobsen, P.H. Pubmed/NCBI databases Substance via MeSH Social Bookmarking                         What's this?