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External Cervical Resorption Secondary to Orthodontic Treatment in a Previously Traumatized Tooth: A Case Report
Ahmed M Alghamdi1, Abier F Alhekeir2, Saad A Al-Nazhan2
1Dentistry, Al-Iman General Hospital, Riyadh First Health Cluster, Riyadh, SAU.
Cureus
|April 9, 2026
Summary
External cervical resorption (ECR), a severe form of external root resorption (ERR), can cause significant tooth damage. This case shows ECR progressing undetected, leading to extraction due to advanced structural compromise.
Area of Science:
- Dentistry
- Endodontics
- Oral Pathology
Background:
- External root resorption (ERR) can result from dental trauma and orthodontic treatment, compromising tooth integrity.
- External cervical resorption (ECR) is an invasive subtype of ERR originating at the cementoenamel junction.
- ECR can lead to severe structural damage, pulp necrosis, and periapical pathology.
