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Quantity of Remaining Double Bonds of Propanal-containing Resins

Department of Dental Materials, School of Dentistry, Faculty of Health Sciences, University of Copenhagen, 20 Norre Alle, DK-2200 Copenhagen N, Denmark

Improved mechanical properties of resin composites have been reported to be a consequence of the addition of aldehyde to the resins. The objective of the present study was to examine whether this improvement could be attributed to an increased degree of conversion of double bonds. For this purpose, propanal was added to monomer mixtures, which were then made light-curing. The monomer mixtures were varied with respect to monomer composition and content of propanal. The quantity of remaining double bonds was determined by means of transmission infrared spectra of the resins recorded before and after wet or dry storage for one week. The addition of propanal resulted in a decrease in the quantity of remaining double bonds by as much as 89% as compared with the mixtures without propanal. Negative correlations of statistical significance were found between the content of propanal and quantity of remaining double bonds in BISGMA:TEGDMA-based as well as in UEDMA:HEMA-based resins for both modes of storage. Significant negative correlations were found between the quantity of remaining double bonds and the previously determined mechanical properties.

Key Words: Aldehyde • Conversion • Dental Materials.

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Journal of Dental Research, Vol. 73, No. 10, 1657-1662 (1994)
DOI: 10.1177/00220345940730101101


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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 Peutzfeldt, A. Search for Related Content PubMed PubMed Citation Articles by Peutzfeldt, A. Pubmed/NCBI databases Compound via MeSH Substance via MeSH Hazardous Substances DB 2-HYDROXYETHYL METHACRYLATE PROPIONALDEHYDE TRIETHYLENE GLYCOL DIMETHACRYLATE Social Bookmarking                         What's this?