Schmitz M S, Montagner F, Montagner H, Escobar C A B, Dos Santos R A, Gomes B P F A
Department of Restorative Dentistry, Santa Maria Dental School, Rio Grande do Sul, Brazil.
Int Endod J. 2008 Jun;41(6):532-7. doi: 10.1111/j.1365-2591.2008.01380.x. Epub 2008 Mar 16.
To report different patterns of root fracture healing in adjacent maxillary central incisors with distinct post-treatment outcomes.
To describe the case of a 12-year-old girl who presented with an avulsed coronal fragment of tooth 11 and root fractures in the middle thirds of teeth 11 and 21. Four months after initial treatment, she was referred for specialized endodontic care. Tooth 11 presented no clinical or radiographic signs of pulp breakdown. However a sinus tract was found related to the middle root third of tooth 21, indicating pulp necrosis in the coronal fragment. The coronal fragment was root filled and periapical surgery was performed to remove the apical fragment. Twelve months after the clinical procedures and 16 months after trauma, hard tissue healing was evident in tooth 11 region. Bone healing was also satisfactory in the periapical region of tooth 21. *Even adjacent teeth may display different reaction patterns after trauma. *The prognosis of root fractures is variable and different clinical approach may be required to preserve teeth with fractured roots.
报告相邻上颌中切牙牙根骨折愈合的不同模式及其不同的治疗后结果。
描述一名12岁女孩的病例，该女孩11号牙冠部牙片脱出，11号牙和21号牙中1/3处牙根骨折。初始治疗4个月后，她被转诊接受专科牙髓治疗。11号牙未出现牙髓坏死的临床或影像学迹象。然而，发现21号牙中根1/3处有窦道，表明冠部牙片牙髓坏死。对冠部牙片进行根管充填，并进行根尖手术以去除根尖牙片。临床操作12个月后及外伤16个月后，11号牙区域可见硬组织愈合。21号牙根尖区的骨愈合也令人满意。*即使相邻牙齿在创伤后也可能表现出不同的反应模式。*牙根骨折的预后各不相同，可能需要采取不同的临床方法来保留牙根骨折的牙齿。
