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Related Experiment Videos

Coronal leakage following three obturation techniques.

S D Gilbert1, D E Witherspoon, C W Berry

  • 1Department of Restorative Sciences, Graduate Endodontics, Baylor College of Dentistry, Dallas, Texas, USA.

International Endodontic Journal
|August 3, 2001
PubMed
Summary
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Vertical compaction showed less bacterial leakage than lateral compaction, but dye leakage showed no significant differences between techniques. Dye testing may help identify issues missed by bacterial leakage tests alone.

Area of Science:

  • Endodontics
  • Dental Materials Science

Background:

  • Root canal obturation is crucial for sealing the root canal system.
  • Effective obturation prevents coronal microleakage, which can lead to treatment failure.

Purpose of the Study:

  • To compare coronal leakage in three obturation techniques: lateral compaction, vertical compaction, and Thermafil.
  • To evaluate both bacterial and India ink leakage after smear layer removal.

Main Methods:

  • Seventy single-rooted teeth were instrumented and the smear layer removed.
  • Teeth were obturated using lateral compaction, vertical compaction, or Thermafil (n=20 each).
  • Bacterial leakage (Proteus vulgaris) and India ink leakage were assessed over 21 days each.

Main Results:

Related Experiment Videos

  • Vertical compaction demonstrated significantly less bacterial leakage compared to lateral compaction.
  • No significant differences in India ink leakage were observed between the lateral and vertical compaction groups.
  • Thermafil group results were not explicitly compared for significance in the abstract.

Conclusions:

  • Bacterial and dye leakage showed considerable variability across techniques.
  • India ink leakage may not fully correlate with bacterial leakage in all cases.
  • Dye testing following bacterial challenge can help identify potential failures missed by bacterial testing alone, reducing false positives.