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Related Experiment Videos

Modified surface-active monomers for adhesive bonding to dentin

S Venz1, B Dickens

  • 1American Dental Association Health Foundation, Paffenbarger Research Center, Gaithersburg, Maryland.

Journal of Dental Research
|March 1, 1993
PubMed
Summary
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The novel liquid adhesive monomer PMGDM offers improved dental bonding over solid PMDM. Optimized application thickness and formulation enhance bond reliability and versatility in dental restorative procedures.

Area of Science:

  • Dental Materials Science
  • Polymer Chemistry
  • Biomaterials Engineering

Background:

  • Dental adhesives are crucial for bonding restorative materials to tooth structure.
  • Current solid adhesive monomers like PMDM present application challenges.
  • A liquid alternative with enhanced properties is needed for improved clinical performance.

Purpose of the Study:

  • To synthesize and evaluate a novel liquid adhesive monomer, PMGDM (pyromellitic dianhydride and glycerol dimethacrylate).
  • To compare the performance of PMGDM against the established solid monomer PMDM in dental adhesive applications.
  • To investigate factors influencing the reliability of adhesive bonds formed with PMGDM.

Main Methods:

  • Synthesis of PMGDM from pyromellitic dianhydride and glycerol dimethacrylate.

Related Experiment Videos

  • Evaluation of adhesive properties including application thickness and additive incorporation.
  • Testing of adhesive bond strength in shear and tensile modes using PMDM as a control.
  • Analysis of bond reliability using Weibull modulus and characteristic strength.

    • Main Results:

    • PMGDM, a liquid monomer mixture of para- and meta isomers, demonstrated advantages over solid PMDM.
    • PMGDM allowed for greater adhesive thickness and incorporation of additives/initiators.
    • Optimized bond reliability was achieved with concentrated PMGDM solutions, ~25 micron adhesive thickness, and diluent monomer modification.
    • Weibull analysis indicated improved bond reliability with optimized PMGDM formulations.

    Conclusions:

    • The liquid monomer PMGDM offers enhanced handling and formulation flexibility compared to solid PMDM.
    • Specific application parameters, including adhesive thickness and formulation, significantly improve the reliability of PMGDM-based dental bonds.
    • PMGDM represents a promising advancement in dental adhesive technology for more robust restorations.