title: Histologic evaluation of periapical areas of endodontically treated teeth with unsuccessful healing.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002921:Cicatrix / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D010484:Periapical Granuloma / Q000473:pathology*; D011842:Radicular Cyst / Q000473:pathology*; D012390:Root Canal Therapy; D014945:Wound Healing