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Related Experiment Videos

Sealer distribution in coronal dentin.

Matthew C Davis1, Richard E Walton, Eric M Rivera

  • 1Department of Endodontics, University of Iowa College of Dentistry, Iowa City 52242-1001, USA.

Journal of Endodontics
|June 18, 2002
PubMed
Summary
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Tooth discoloration after root canal treatment is often due to sealer remnants. This study found that common sealers did not penetrate dentin but did discolor over two years, remaining in the pulp chamber.

Area of Science:

  • Endodontics
  • Dental Materials Science

Background:

  • Tooth discoloration is a common concern following root canal therapy.
  • Sealer remnants in the pulp chamber are a suspected cause of this discoloration.

Purpose of the Study:

  • To evaluate the coronal distribution and color changes of four endodontic sealers after two years.
  • To determine if sealers cause dentin discoloration when placed in the pulp chamber.

Main Methods:

  • Fifty extracted premolars were treated with one of four sealers (AH 26, Kerr Pulp Canal Sealer, Roth 801, Sealapex) in the pulp chamber.
  • Teeth were stored for two years, then longitudinally sectioned.
  • Digital images were used for blind evaluation of sealer presence and dentin color changes.

Main Results:

Related Experiment Videos

  • No measurable sealer penetration into dentin was observed for any sealer type.
  • No dentin discoloration occurred in any experimental group.
  • All tested sealers exhibited significant discoloration after two years.

Conclusions:

  • Commonly used endodontic sealers do not penetrate dentin or cause dentin discoloration after two years.
  • The sealers themselves discolor significantly over time.
  • Sealers remain confined to the pulp chamber, suggesting discoloration originates from the sealer material itself.