Hayashi Mikako, Shimizu Ayako, Ebisu Shigeyuki
Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry, Suita, Japan.
J Endod. 2004 Feb;30(2):120-2. doi: 10.1097/00004770-200402000-00015.
The case reported demonstrates dramatic healing of the periapical region of retreated root canals with open apices by the successful use of mineral trioxide aggregate (MTA). Unsuccessful conventional root canal therapy for the mandibular central incisors had been followed by surgical treatment. The severely damaged root canals were obturated using MTA in anticipation of the formation of artificial apical plugs. The treated teeth were asymptomatic, and radiographic examination demonstrated apparent regeneration of periradicular tissue 2 years after the obturation. MTA can be considered a very effective material to promote regeneration of apical tissue, even in teeth with large open apices.
所报道的病例显示，通过成功使用三氧化矿物凝聚体（MTA），根尖开放的根管再治疗后根尖区实现了显著愈合。下颌中切牙传统根管治疗失败后进行了外科治疗。使用MTA对严重受损的根管进行充填，以期形成人工根尖屏障。治疗后的牙齿无症状，根管充填2年后的影像学检查显示根尖周组织明显再生。即使对于根尖大开放的牙齿，MTA也可被认为是促进根尖组织再生的一种非常有效的材料。
