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Characterization of dentin-bonding-amalgam interfaces.

S B Geiger1, Y Mazor, E Klein

  • 1Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.

Operative Dentistry
|May 19, 2001
PubMed
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Bonding agents and adhesive resins are crucial for preventing microleakage in amalgam restorations. Condensing amalgam over uncured adhesive provides a superior seal compared to cured adhesive, ensuring better adhesion.

Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Restorative Dentistry

Background:

  • Bonding agents and resinous adhesives are commonly used before amalgam condensation.
  • The interfacial interactions and sealing efficacy of these materials require further investigation.

Purpose of the Study:

  • To characterize the interfaces in bonded amalgam restorations.
  • To evaluate the role of bonding agents and adhesive resins in preventing microleakage.
  • To examine the effect of application methods on adhesion to amalgam.

Main Methods:

  • Dye penetration assay.
  • Scanning electron microscopy (SEM) with high-resolution elemental analysis.

Main Results:

Related Experiment Videos

  • Placing bonding material under amalgam is essential for preventing microleakage.
  • Condensing amalgam over uncured adhesive yields a better seal than over cured adhesive.
  • Adhesion is primarily mechanical, with adhesive material interdigitating into the amalgam.

    • Conclusions:

    • Bonded amalgam restorations require proper application of bonding agents and adhesives for effective sealing.
    • Uncured adhesive provides a superior interface for amalgam condensation.
    • Resinous glass composite alone is insufficient for adequate sealing.