歯根部に侵襲性の外部吸収を生じた下顎犬歯を外科的に修復した症例

抄録

Abstract : There are different classifications of external root resorption. As Heithersay GS reported, treatment for invasive cervical resorption becomes difficult once the resorption reaches the apical portion. In the present case report, root resorption that continued from the root area of the lower right canine into the root canal was observed by CBCT. It was diagnosed as invasive resorption accompanying periodontitis. Regular root canal treatment, with rubber-dam and sufficient irrigation followed by obturation, was performed.

 After root canal obturation, a flap was opened under a microscope, followed by curettage of the granulation tissue of the resorption area from the periodontal ligament side. Then, MTA was used to seal the resorption area. At one-year follow-up, there was no tenderness, pus from periodontal pockets or any other symptoms.

 It is considered that the removal of granulation tissue and separation of the root canal from the periodontal pocket with MTA filling is effective for the treatment of invasive resorption.