title: Extraoral fistulas of endodontic origin: report of two cases.
mesh_terms: D000293:Adolescent; D003481:Cuspid / Q000473:pathology; D003751:Dental Fistula; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010482:Periapical Abscess / Q000628:therapy*; D012389:Root Canal Obturation; D012390:Root Canal Therapy