Resumo

GARCHITORENA, María Inés  e  BRUZZONE, María Clara. External cervical resorption: why does it occur?. Odontoestomatología [online]. 2025, vol.27, n.45, e339.  Epub 01-Jun-2025. ISSN 0797-0374.  https://doi.org/10.22592/ode2025n45e339.

External cervical resorption (ECR) is a relatively rare but highly aggressive form of dental tissue destruction. Despite numerous reported cases over the decades and various clinical studies investigating this condition, its etiology remains unclear.

This work aims to identify potential predisposing factors associated with the development of ECR through a broad narrative review of the available literature.

Based on current evidence, it is concluded that ECR is a pathological process of multifactorial origin. The combination of predisposing factors appears to increase the likelihood of its development. The factors most frequently linked to ECR development include dental trauma, orthodontic movements involving uncontrolled forces, and internal bleaching treatments using highly concentrated agents combined with heat application and improper chamber preparation.

Palavras-chave : External cervical resorption; dental trauma; tooth bleaching.

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