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External Cervical Resorption: A Retrospective Case-Control Study.

Eleni Irinakis1, Jolanta Aleksejuniene2, Ya Shen1

  • 1Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, The University of British Columbia, Vancouver, British Columbia, Canada.

Journal of Endodontics
|June 12, 2020
PubMed
Summary
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External cervical resorption (ECR) is linked to diabetes and trauma. This study identified these factors, confirming part of the hypothesis that both systemic and local risks increase ECR rates.

Area of Science:

  • Endodontics
  • Dental Research
  • Oral Health

Background:

  • External cervical resorption (ECR) is a complex dental condition.
  • Identifying risk factors for ECR is crucial for prevention and management.
  • Previous studies suggest both local and systemic factors may contribute to ECR.

Purpose of the Study:

  • To investigate potential systemic and local risk factors associated with external cervical resorption (ECR).
  • To test the hypothesis that both local and systemic risks correlate with increased ECR rates.

Main Methods:

  • A retrospective case-control study involving 76 patients with ECR and a matched control group.
  • Data collected included dental/medical history, local factors (bruxism, trauma, etc.), and systemic factors (conditions, medications, allergies).
Keywords:
Case-control studyexternal cervical resorptionlocal risk factorssystemic risk factors

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  • Statistical analysis using chi-square or Fisher exact tests compared risk factor prevalence between groups.

    • Main Results:

    • The prevalence of ECR among endodontic patients was 2.3% over a 10-year period.
    • Maxillary anterior teeth were most affected (31.6%), with Heithersay class 2 being the most common diagnosis (38.8%).
    • Diabetes emerged as the sole significant systemic risk factor (P < .05), and trauma as a significant local risk factor (P < .05).

    Conclusions:

    • The study partially confirmed the hypothesis, identifying specific risk factors for ECR.
    • Diabetes (systemic) and trauma (local) were significantly associated with higher rates of external cervical resorption.
    • These findings highlight the importance of considering both systemic health and dental history in ECR assessment.