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Understanding external cervical resorption patterns in endodontically treated teeth.

A-M Mavridou1,2, E Hauben3, M Wevers4

  • 1Department of Oral Health Sciences, BIOMAT Research Cluster, KU Leuven & University Hospital Leuven, Leuven, Belgium.

International Endodontic Journal
|January 19, 2017
PubMed
Summary
This summary is machine-generated.

External cervical resorption (ECR) in root-filled teeth follows similar patterns to vital teeth but shows more intense resorption and less repair. This may be due to the absence of pulp and protective layers after root canal treatment.

Keywords:
endodontically treated teethexternal cervical resorptionhistologynano-CTresorption patternresorption repair

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Area of Science:

  • Dentistry
  • Endodontics
  • Oral Pathology

Background:

  • External cervical resorption (ECR) is a pathological process affecting teeth.
  • Understanding ECR patterns in endodontically treated teeth is crucial for diagnosis and management.
  • Previous studies have primarily focused on ECR in teeth with vital pulps.

Purpose of the Study:

  • To elucidate the patterns of external cervical resorption (ECR) in endodontically treated teeth.
  • To compare the characteristics and mechanisms of ECR in root-filled teeth with those in teeth with vital pulps.

Main Methods:

  • Seven cases of endodontically treated teeth with ECR were analyzed.
  • Diagnosis involved clinical findings, cone-beam computed tomography (CBCT), nano-focus CT, hard-tissue histology, and scanning electron microscopy (SEM).
  • Representative cases of ECR in vital teeth were included for comparative analysis.

Main Results:

  • Endodontically treated teeth exhibited a consistent ECR pattern with initiation, resorption, and repair stages, similar to vital teeth.
  • Resorption initiated below the gingival epithelial attachment at the cementum level.
  • In root-filled teeth, resorption was more intense, with extensive clastic cell activity and granulation tissue, and less reparative hard tissue formation compared to vital teeth.

Conclusions:

  • ECR in endodontically treated teeth shares initiation, resorption, and repair stages with vital teeth.
  • Differences observed in resorption and repair stages in root-filled teeth may stem from the absence of pulp and protective layers, and altered root dentine composition.
  • The reduced repair capacity in root-filled teeth warrants further investigation for clinical implications.