摘要：The internal dental resorption is a rare disease, asymptomatic, which is usually detected accidentally on a radiograph routine; its etiology is unknown but is believed to be produced trauma, persistent chronic pulpits, orthodontic, among other causes. Although this condition is rare, the endodontist cannot ignore the knowledge of this and much less treatment, as this depends on the condition that stops or further progress, because the resorptive action is linked to certain pulp vitality degree, after the elimination of pulp tissue dental bodies with this kind of pathology, one must consider that material is ideal to seal off the cavity of elliptical or rounded that causes this type of resorption. Since the departure of the MTA (mineral trioxide aggregate) long ago, this assumes multiple applications in the endodontic practice because of its great advantages and properties compared to other materials on the market, which is why it becomes a material of choice for filling of these spring-loaded cavities, along with copious irrigation with sodium hypochlorite and biomechanics conformation of the root canals. The following article will show the clinical management of two root canals premolar sub - obturates and internal root resorption, in which mineral trioxide aggregate used as root filling material. Keywords: Bicuspid, Endodontics, Tooth resorption, root canal obturation, mineral trioxide aggregate
