Abstract
There have been previous reports wherein extrusion of the root canal filling material through the root apex during filling of the root canal compressed or damaged the inferior alveolar nerve, causing mental nerve paresthesia. We encountered a case where non-resorbable root canal filling material extruded from the apical foramen into the mandibular canal, causing mental nerve paresthesia, and complete recovery of sensation was achieved through surgical removal of the non-resorbable root canal filling material. The patient was a man in his 30s who visited our clinic with the chief complaint of mental nerve paresthesia. Non-resorbable root canal filling material was found to have escaped into the mandibular canal. Spontaneous recovery could have been expected with resorbable root canal filling material, but spontaneous regression of symptoms, with observation as the only treatment, is not possible with non-resorbable root canal filling materials. Therefore, the non-resorbable root canal filling material was removed surgically, under general anesthesia, and the mental nerve paresthesia was resolved completely at an early postoperative stage.
