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Related Experiment Videos

Coronal microleakage in conservatively restored endodontic access preparations

A J Kleitches1, R R Lemon, B G Jeansonne

  • 1Department of Endodontics, Louisiana State University School of Dentistry, USA.

The Journal of the Tennessee Dental Association
|January 1, 1995
PubMed
Summary

The "sandwich" (glass ionomer cement/composite resin) and composite resin techniques showed significantly less coronal microleakage in endodontic access preparations compared to glass ionomer cement alone. Further research may optimize the sandwich technique for superior sealing.

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Area of Science:

  • Dentistry
  • Dental Materials Science
  • Restorative Dentistry

Background:

  • Endodontic access preparations require effective sealing to prevent coronal microleakage.
  • Various restorative materials, including glass ionomer cement (GIC) and composite resin (CR), are used, each with distinct properties.
  • The "sandwich" technique combines GIC and CR to potentially leverage their combined benefits.

Purpose of the Study:

  • To evaluate and compare the coronal microleakage of endodontic access preparations restored with GIC, CR, or the "sandwich" (GIC/CR) technique.
  • To determine which restorative approach offers superior sealing against microleakage.

Main Methods:

  • Standardized access preparation size in 32 maxillary premolars.
  • Random assignment to three experimental groups (GIC, CR, "sandwich") and a control group.

Related Experiment Videos

  • Restoration placement, thermocycling, dye immersion, sectioning, and dye penetration measurement.

    • Main Results:

    • Both "sandwich" (GIC/CR) and composite resin (CR) restorations demonstrated significantly less coronal microleakage than glass ionomer cement (GIC) alone.
    • The "sandwich" technique showed a trend towards less leakage than composite resin, though not statistically significant.

    Conclusions:

    • Composite resin and the "sandwich" technique provide superior coronal sealing in endodontic access preparations compared to glass ionomer cement.
    • The "sandwich" technique shows promise for enhanced microleakage resistance, warranting further investigation.