Radiolucent injuries at periapical level are closely related to endodontics, but at all professional dentistry, patients who present this type of injury, sometimes without any symptomatology, but sometimes with pain, inflammation or fistula and go to Ask for a solution for your problem. In this presentation we will focus on understanding the possible causes of these injuries in order to guide the patient about the possibilities of treatment, in order to keep these teeth in the mouth as long as possible.