Actualización sobre reabsorción radicular interna

Abstract

Internal root resorption is a pathologic process that produces the destruction of mineralized structures of the tooth. It is initiated within the root canal system and, whereas part of the pulp remain vital, can be advancing until a perforation to the periodontal ligament takes place. Internal root resorption is usually asymptomatic and is first recognized clinically through routine radiographs. Many studies have described an incidence below 1%, but recent studies demonstrate that there are indications of root resorption in a high percentage of the teeth that present inflammatory tissue or necrosis. The "pink spot" has traditionally been used to describe the pathognomonic clinical picture of internal root resorption, but nowadays it is known that actually it is indicative of the presence of cervical root resorption. The diagnosis is radiographic, being of great help the use of three-dimensional image technology as the CBCT (Cone Beam Computed Tomography). Root canal treatment stops the root resorption completely. To seal the resorptive defect, gutta-percha injection technique should be done. Nevertheless, if the internal root resorption has extended to the periodontal ligament the choice obturation material would be MTA.