[Studies on the morbid changes in the supporting apparatus of the root apex caused by the infected root canal].
D001862:Bone Resorption / Q000209:etiology; D003790:Dental Pulp Necrosis / Q000150:complications; D010482:Periapical Abscess / Q000473:pathology; D010519:Periodontium / Q000473:pathology; D014092:Tooth Root / Q000473:pathology