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Evaluation of the Interactions of a Silane Agent With Dental Monomers by Near Infrared Spectroscopy

Published

Author(s)

Sabine H. Dickens, Joseph M. Antonucci, Bruce O. Fowler

Abstract

This study evaluated the applicability of near-infrared (NIR) spectroscopy to follow the reactions of 3-methacryloxypropyltrimethoxysilane (MPTMS) with water and between MPTMS and non-hydroxylated dental monomers, e.g., ethoxylated bisphenol A dimethacrylate (EBPADMA) and urethane dimethacrylate (UDMA). The photo-polymerization kinetics of the reaction products were followed by real time NIR spectroscopy. For comparison, the reactions of MPTMS with water forming oligomeric silsesquioxane (OMPTMS), and MPTMS with Bis-GMA or a Bis-GMA/TEGDMA mixture were studied under similar conditions. Neat UDMA monomer has the highest reactivity, followed by the OMPTMS-free Bis-GMA/TEGDMA resin. The comonomer mixtures prepared from MPTMS oligomerized in UDMA or Bis-GMA/TEGDMA showed lower, but still reasonably high reactivities.The somewhat lower conversion of the OMPTMS containing monomer mixtures are, however, of lesser concern, because of the potential advantage of the high-molecular weight oligomers, which may increase the toughness of the resin based dental products, while reducing the polymerization shrinkage and shrinkage related stresses.
Proceedings Title
American Chemical Society; Division of Polymer Chemistry, National Meeting | 224th | | American Chemical Society (ACS)
Volume
43
Issue
No. 2
Conference Dates
August 1, 2002
Conference Title
Polymer Preprints

Keywords

near infrared spectroscopy, objomeric dental monomers, photopolymerization, real time photopolymerization kenetics, silsesquioxane

Citation

Dickens, S. , Antonucci, J. and Fowler, B. (2002), Evaluation of the Interactions of a Silane Agent With Dental Monomers by Near Infrared Spectroscopy, American Chemical Society; Division of Polymer Chemistry, National Meeting | 224th | | American Chemical Society (ACS), [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852029 (Accessed May 19, 2024)

Issues

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Created August 1, 2002, Updated February 17, 2017