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Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere
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Root dentinal microcracks: a post-extraction experimental phenomenon?

G De-Deus1, D M Cavalcante1, F G Belladonna1

  • 1Department of Endodontics, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil.

International Endodontic Journal
|December 15, 2018
PubMed
Summary
This summary is machine-generated.

This study found no pre-existing microcracks in non-endodontically treated teeth from cadavers. Microcracks seen in stored teeth are likely artifacts from extraction or storage, not natural defects.

Keywords:
cadaver modeldentinal defectsmicro-CTmicrocracksvertical root fracture

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Area of Science:

  • Dental Anatomy and Pathology
  • Radiology and Imaging

Background:

  • Pre-existing dentinal microcracks in teeth are a concern in endodontic diagnosis.
  • Previous studies have reported microcracks in extracted teeth, but their origin is debated.

Purpose of the Study:

  • To investigate the prevalence, location, and pattern of pre-existing microcracks in non-endodontically treated teeth using a cadaver model.
  • To validate micro-computed tomography (micro-CT) for detecting dentinal defects in situ.

Main Methods:

  • A pilot study validated micro-CT detection of induced microcracks in a dehydrated tooth within its alveolar socket.
  • 178 non-endodontically treated teeth from 42 cadaveric dentoalveolar bone blocks were scanned using high-resolution micro-CT.
  • 65,530 cross-sectional images were analyzed from the cementoenamel junction to the apex.

Main Results:

  • The pilot study confirmed micro-CT's ability to detect microcracks in teeth both inside and outside the alveolar bone block.
  • Analysis of 178 teeth from cadavers revealed no instances of pre-existing dentinal microcracks.

Conclusions:

  • The in situ cadaveric model demonstrated a lack of pre-existing dentinal microcracks in non-endodontically treated teeth.
  • Findings suggest that microcracks observed in stored extracted teeth are artifacts of the extraction or storage process.
  • Microcracks detected in stored teeth should be termed 'experimental dentinal microcracks' rather than pre-existing defects.