Calişkan M K, Pehlivan Y
Department of Endodontics, School of Dentistry, Ege University, Bornova-Izmir, Turkey.
Endod Dent Traumatol. 1996 Jun;12(3):129-36. doi: 10.1111/j.1600-9657.1996.tb00111.x.
The prognosis of 56 root-fractured permanent incisors was evaluated clinically and radiographically for 2 to 31 years. Information about initial case histories, examination and treatment of root-fractured teeth were recorded retrospectively from patient cards. Most of the root fractures occurred in the 16-20 year age group (38%) followed by the 11-15 year age group (29%). Males were involved more often than females. Fifty-two percent of the patients visited the dental clinic within the first week, while 48% did so 1 month-31 years later after the injury. The leading cause of root fractured injuries was falls (46%) and mostly involved one tooth (71%). Maxillary central incisors were the most often affected teeth (95%). The most common type of root fracture was in the middle third of the root (57%) followed by apical part (34%). About 59% of untreated or splinted teeth maintained their vitality. Healing with connective tissue was observed in 19 teeth, with calcified tissue in 15 teeth and with osseous tissue in only one tooth. There was partial or complete obliteration of the pulp space in these healed cases (62.5%). The formation of pulpal hard tissue produced no additional clinical problems. Partial or total pulp necrosis were noted in 21 (37.5%) teeth. Endodontic treatment was successful in 12 cases. The remaining 9 teeth were extracted due to the loss of marginal alveolar bone and apical periodontitis.
对56颗根折恒牙进行了2至31年的临床和影像学预后评估。从患者病历卡中回顾性记录了有关根折牙的初始病例史、检查和治疗信息。大多数根折发生在16 - 20岁年龄组（38%），其次是11 - 15岁年龄组（29%）。男性比女性更常受累。52%的患者在第一周内就诊于牙科诊所，而48%的患者在受伤后1个月至31年才就诊。根折损伤的主要原因是跌倒（46%），且大多累及一颗牙（71%）。上颌中切牙是最常受累的牙齿（95%）。最常见的根折类型是牙根中1/3（57%），其次是根尖部（34%）。约59%未经治疗或已固定的牙齿保持了活力。观察到19颗牙齿有结缔组织愈合，15颗牙齿有钙化组织愈合，只有1颗牙齿有骨组织愈合。在这些愈合病例中，牙髓腔有部分或完全闭锁（62.5%）。牙髓硬组织的形成未产生额外的临床问题。21颗（37.5%）牙齿出现部分或全部牙髓坏死。根管治疗12例成功。其余9颗牙齿因牙槽骨边缘丧失和根尖周炎而被拔除。
