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Related Experiment Videos

Tissue conditioners protected by a poly(methyl methacrylate) coating

N E Dominguez1, C J Thomas, T M Gerzina

  • 1School of Dental Studies, University of Sydney, Australia.

The International Journal of Prosthodontics
|March 1, 1996
PubMed
Summary
This summary is machine-generated.

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A poly(methyl methacrylate) coating (Monopoly) may extend the life of soft denture liners by reducing water absorption. However, the coating showed some methyl methacrylate monomer loss, though plasticizer loss was minimal.

Area of Science:

  • Dental Materials Science
  • Polymer Chemistry

Background:

  • Interim soft denture liners are crucial therapeutic materials.
  • Their longevity is limited, necessitating methods for improvement.

Purpose of the Study:

  • To assess if a poly(methyl methacrylate) coating (Monopoly) can prevent water absorption and plasticizer loss from a tissue conditioner (Visco-gel).

Main Methods:

  • Disk specimens of Visco-gel, with and without Monopoly coating, were immersed in water.
  • Water absorption was measured gravimetrically.
  • Water samples were analyzed using reversed-phase high-performance liquid chromatography (RP-HPLC) to identify components.

Main Results:

  • Uncoated Visco-gel showed initial weight loss followed by water absorption.

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  • The Monopoly coating appeared to mitigate water absorption.
  • Plasticizer loss from Visco-gel was below quantifiable limits, but methyl methacrylate monomer loss from the Monopoly coating was detected.

    • Conclusions:

    • Poly(methyl methacrylate) coating shows potential in reducing water absorption in soft denture liners.
    • Further research is needed to fully understand the implications of monomer leaching from the coating material.