Department of Dentistry Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC.
Dent Traumatol. 2010 Apr;26(2):182-5. doi: 10.1111/j.1600-9657.2010.00864.x.
This case report describes the continued root formation following replantation and conventional root canal therapy of a traumatically avulsed open-apex tooth with suppurative apical periodontitis. A 7-year-old male patient had an avulsed upper left central incisor (tooth 21) replanted approximately 50 min after traumatic avulsion. A root canal procedure was initiated due to pulp necrosis and periapical abscess detected in the follow-up period. After endodontic treatment with calcium hydroxide (Ca(OH)(2)) dressing, a normal root length developed including an apical segment beyond the hard tissue barrier. Regeneration of the root occurred without pathology or ankylosis at 1-year of follow up.
本病例报告描述了一例伴有化脓性根尖周炎的外伤性脱位的露髓牙，经再植和常规根管治疗后持续根形成的情况。一名 7 岁男性患者因外伤性脱位，左上中切牙（21 牙）约 50 分钟后再植。在随访期间发现牙髓坏死和根尖脓肿，因此进行了根管治疗。用氢氧化钙（Ca(OH)(2)）进行根管内封药后，正常的牙根长度包括一个超出硬组织屏障的根尖段得以发育。在 1 年的随访中，未见病理或粘连，根发生了再生。
