Necrosis of the periodontal ligament in root canal overfillings.
D000818:Animals; D003786:Dental Pulp Cavity; D066298:In Vitro Techniques; D008963:Molar; D009336:Necrosis / Q000209:etiology*; D010519:Periodontium / Q000473:pathology*; D011670:Pulpectomy; D051381:Rats; D012389:Root Canal Obturation / Q000009:adverse effects*; D012390:Root Canal Therapy