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Related Experiment Videos

Microleakage reduction using glass-ceramic inserts

B Godder1, L Zhukovsky, R Trushkowsky

  • 1Division of Restorative and Prosthodontic Sciences, College of Dentistry, New York University.

American Journal of Dentistry
|April 1, 1994
PubMed
Summary
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Beta-Quartz glass-ceramic and incremental resin composite fillings significantly reduce dental microleakage compared to pre-cured composite inserts. This research offers insights into improved dental restoration techniques for better longevity.

Area of Science:

  • Dental Materials Science
  • Restorative Dentistry
  • Biomaterials Engineering

Background:

  • Dental restorations aim to prevent microleakage, a primary cause of secondary caries and restoration failure.
  • Various materials and techniques, including resin composites and ceramic inserts, are employed to achieve durable and sealed restorations.
  • Understanding the marginal integrity of different restorative approaches is crucial for clinical success.

Purpose of the Study:

  • To compare the microleakage of dental restorations using incremental resin composite fill, Beta-Quartz glass-ceramic inserts, and pre-cured resin composite inserts.
  • To evaluate the effectiveness of different composite placement strategies in preventing marginal leakage.

Main Methods:

  • An in vitro study utilized 30 human non-carious dental specimens divided into three groups.

Related Experiment Videos

  • Restorations were placed using TPH resin composite with either incremental fill, Beta-Quartz glass-ceramic inserts, or pre-cured resin composite inserts.
  • Specimens underwent thermocycling, sectioning, and microleakage assessment on a 0-5 scale.

    • Main Results:

    • Beta-Quartz glass-ceramic inserts showed significantly less microleakage than pre-cured resin composite inserts (P < .03).
    • Incrementally placed resin composite restorations also exhibited significantly less microleakage compared to pre-cured resin composite inserts (P < .03).
    • No significant difference in microleakage was noted between Beta-Quartz glass-ceramic inserts and incrementally placed resin composite restorations.

    Conclusions:

    • Both Beta-Quartz glass-ceramic inserts and incremental resin composite filling techniques offer superior marginal seal compared to pre-cured resin composite inserts.
    • These findings suggest that material choice and placement technique significantly impact the longevity and success of dental restorations.
    • Clinicians may consider incremental placement or the use of ceramic inserts to minimize microleakage in composite restorations.