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Related Experiment Videos

Long-term seal provided by some root-end filling materials

M K Wu1, E G Kontakiotis, P R Wesselink

  • 1Department of Cariology Endodontology, Academic Centre for Dentistry Amsterdam, The Netherlands.

Journal of Endodontics
|October 6, 1998
PubMed
Summary

Mineral trioxide aggregate (MTA) provides a superior, long-lasting seal for root-end fillings compared to amalgam and Super-EBA. MTA demonstrated significantly reduced leakage over 12 months, highlighting its clinical importance.

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Area of Science:

  • Endodontics
  • Dental Materials Science
  • Biomaterials

Background:

  • A secure and durable seal at the root-end is critical for successful endodontic treatment.
  • Root-end filling materials must prevent microleakage to maintain the integrity of the periapical tissues.
  • Evaluating the long-term sealing ability of various materials is essential for clinical decision-making.

Purpose of the Study:

  • To compare the long-term sealing performance of five root-end filling materials.
  • To assess the fluid leakage through bovine root sections filled with different materials over a 12-month period.
  • To determine the clinical suitability of materials based on their sealing efficacy.

Main Methods:

  • 100 bovine root sections were filled with five different root-end filling materials.

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  • Fluid leakage was measured using a fluid transport model at 24 hours, and at 3, 6, and 12 months post-filling.
  • Leakage was assessed under a low headspace pressure of 10 kPa (0.1 atm).

    • Main Results:

    • Mineral trioxide aggregate (MTA) showed a significant decrease in leakage from 55% to 0% within the first 3 months, maintaining this seal for 12 months.
    • Tytin amalgam and Super-EBA exhibited increased gross leakage (>20 µL/day) within the first 3 months (20-100% and 0-55%, respectively).
    • Glass ionomer cements (Fuji II, Hi Dense) and MTA demonstrated less leakage than amalgam and Super-EBA at 3, 6, and 12 months.

    Conclusions:

    • Mineral trioxide aggregate (MTA) offers a superior and sustained seal compared to conventional amalgam and Super-EBA.
    • Glass ionomer cements also provide a better seal than amalgam and Super-EBA over the long term.
    • MTA's excellent sealing properties make it a highly reliable material for root-end fillings.