External resorption.
Patient came to the clinic complaining of pain on hot and cold, with slow decline. On clinical examination, resorption gap was found on the cervical palatal surface. Radiographic examination revealed radiolucent image characteristic of inflammatory cervical resorption. The treatment performed was endodontic, periodontal surgery, closure of the resorption cavity with MTA and composite resin on the cervical.
A 2-month follow-up reveals a healthy aspect of the tissues adjacent to the lesion.
Case performed by students Sinuhe Saad and Bruno Cavalcante from class II of the specialization course in Endodontics at HPG Brasília.
In: Barnabé et. al. Rev Odontol Bras Central 2011;20(55)
External cervical resorption is a form of external tooth resorption that is relatively rare and invasive in nature, usually its cause is associated with dental trauma, orthodontic treatment or internal whitening. As it does not present painful symptoms, it is often diagnosed by routine radiographic exams, making it difficult to diagnose at the initial
stage.
External Cervical Resorption (ECR) is a clinical term used to describe a form of external tooth resorption
relatively rare and of invasive nature that can occur in any tooth in the permanent dentition. Characterized by
its cervical location, this process leads to progressive resorption and usually destructive loss of tooth structure².
Although it is known that one of the functions of cementum is to protect root dentin from being resorbed, any damage caused to this tissue may result in exposure of root dentin to osteoclasts and, therefore, initiate the resorption process, Currently, little is known about the etiology of ECR. Some predisposing factors have been suggested as triggers of the resorption process. The most significant are dental trauma, orthodontic treatment and internal whitening.
The condition is generally painless, except when accompanied by pulpal or periodontal infection, so it is often
diagnosed by routine radiographic examinations.
When the lesion becomes visible, the clinical features can range from
a small defect at the gingival margin to a rosy appearance on the crown of the tooth, and is evidenced due to dentin resorption and highly vascular tissue that becomes visible through the thin remaining enamel.
Heithersay (1999) classified the lesions according to their extent: Class I, a small lesion with resorption near the cervical area with penetration into superficial dentin; Class II, a lesion extending toward the coronal pulp chamber,
but showing little or no invasion of the root dentin; Class III, deep resorption involving the coronal dentin but also extending into the cervical third of the root; and Class IV, a large resorption process extending beyond the cervical third of the root canal.
https://ferrariendodontia.com.br/reimplante-intencional-reabsorcao-radicular/
