Karp Jeffrey, Bryk Jennifer, Menke Eric, McTigue Dennis
Division of Pediatric Dentistry, Eastman Department of Dentistry, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
Pediatr Dent. 2006 May-Jun;28(3):273-8.
The use of mineral trioxide aggregate (MTA) for complete endodontic obturation of an immature maxillary central incisor is reported. The injured tooth of a 9-year-old male was avulsed secondary to a sports-related traumatic event. Early attempts at pulpal revascularization of the replanted tooth proved unsuccessful, as evidenced by radiographic signs of external inflammatory root resorption in the middle to cervical thirds of the root. Calcium hydroxide apexification over a 1-year period promoted cessation of the resorptive process, but was unable to adequately form an apical root canal barrier. Due to the extent of external resorption and the lack of an apical stop, a novel endodontic treatment using mineral trioxide aggregate was utilized. At 865 days post-injury, the tooth remained asymptomatic with clinical and radiographic evidence of periodontal health.
报道了使用矿物三氧化物凝聚体（MTA）对上颌未成熟中切牙进行完全根管充填的情况。一名9岁男性的患牙因与运动相关的创伤事件而脱位。再植牙早期进行牙髓血管再生的尝试未成功，牙根中至颈三分之一处出现外部炎性牙根吸收的影像学表现即可证明。在1年的时间里使用氢氧化钙进行根尖诱导成形促进了吸收过程的停止，但未能充分形成根尖根管屏障。由于外部吸收的程度以及缺乏根尖止点，采用了一种使用矿物三氧化物凝聚体的新型根管治疗方法。受伤后865天，患牙无症状，有临床和影像学证据表明牙周健康。
