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Related Experiment Videos

New surface-active comonomer for adhesive bonding

R L Bowen1, P S Bennett, R J Groh

  • 1American Dental Association Health Foundation, Paffenbarger Research Center, NIST, Gaithersburg, MD 20899, USA.

Journal of Dental Research
|January 1, 1996
PubMed
Summary
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The synthesized N-2-propionic acid-N-3-(2-hydroxy-1-methacryloxy)propyl-3,5-dimethylaniline sodium salt (N35A) shows comparable adhesion promotion to Na-NTG-GMA. N35A exhibits superior color stability in adhesive bonding applications.

Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Dental Materials

Background:

  • Aromatic amine characteristics are influenced by substituent groups.
  • Surface-active comonomers are crucial in adhesive bonding protocols.
  • Optimizing comonomer properties can enhance adhesive performance.

Purpose of the Study:

  • To synthesize and characterize a novel aromatic amine derivative, N-2-propionic acid-N-3-(2-hydroxy-1-methacryloxy)propyl-3,5-dimethylaniline sodium salt (N35A).
  • To evaluate the color stability and adhesion-promoting capabilities of N35A compared to a commercial standard (Na-NTG-GMA).
  • To assess the impact of methyl group substitution on the performance of surface-active comonomers in dental adhesive formulations.

Main Methods:

  • Synthesis of N35A via addition reaction and alkaline hydrolysis.

Related Experiment Videos

  • Characterization using 1H and 13C NMR spectra and mass spectroscopy.
  • Comparative analysis of polymerization, color stability, and shear bond strength to human dentin with Na-NTG-GMA.

    • Main Results:

    • N35A was successfully synthesized and characterized.
    • N35A demonstrated significantly better color stability than Na-NTG-GMA under tested conditions.
    • Shear bond strengths of N35A (30.2 MPa) and Na-NTG-GMA (29.7 MPa) to human dentin were statistically similar.

    Conclusions:

    • The novel N35A comonomer offers comparable adhesion promotion to existing commercial materials.
    • N35A presents an advantage in color stability, potentially beneficial for aesthetic dental applications.
    • Methyl group substitution in aromatic amine comonomers can modulate performance characteristics for adhesive bonding.