Radwan Amr, Kim Sahng G
Division of Endodontics, College of Dental Medicine, Columbia University, New York, New York.
Division of Endodontics, College of Dental Medicine, Columbia University, New York, New York.
J Endod. 2014 Jan;40(1):140-4. doi: 10.1016/j.joen.2013.08.017. Epub 2013 Oct 1.
Taurodontism is an aberration in tooth morphology characterized by vertically enlarged pulp chambers, apical displacement of pulp floors, and short roots. So far in the literature, no more than 8 taurodonts have been reported in 1 patient. The aim of this case report was to describe the endodontic management of a hypertaurodont maxillary second molar and to present a rare case with 10 taurodonts in a black man with a biometric analysis using cone-beam computed tomographic imaging.
An 18 year-old black man was referred to the postgraduate endodontic clinic for emergency treatment. The patient's medical history was noncontributory. Tooth #2 had lingering pain in response to the cold test and was positive to both percussion and palpation. Radiographic examination showed the characteristics of taurodontism and periapical radiolucency around the root apices of tooth #2. Tooth #2 was diagnosed with symptomatic irreversible pulpitis and symptomatic apical periodontitis. The tooth was endodontically treated in 2 appointments. A panoramic radiograph showed multiple taurodontism. At the follow-up, a cone-beam computed tomographic scan was taken to further evaluate and diagnose taurodontism. Ten molars showed taurodontism including 7 hypertaurodonts, 2 mesotaurodonts, and a hypotaurodont. High variations of root canal anatomy were observed among taurodonts including maxillary and mandibular hypertaurodonts with C-shape canals.
The present case describes 10 taurodonts in a patient with no specific syndromes and endodontic treatment of a hypertaurodont maxillary second molar. Cone-beam computed tomographic imaging may be useful in the evaluation and management of the anatomic complexity of roots and root canals of taurodonts.
牛牙样变是一种牙齿形态异常，其特征为髓腔垂直增大、髓室底向根尖移位以及牙根短小。迄今为止，文献报道中尚无1例患者出现超过8颗牛牙样变牙齿的情况。本病例报告旨在描述1例上颌第二磨牙高度牛牙样变的根管治疗情况，并呈现1例罕见的黑人患者有10颗牛牙样变牙齿的病例，同时使用锥形束计算机断层扫描成像进行生物测量分析。
一名18岁黑人男性因急诊被转诊至研究生根管治疗门诊。患者的病史无特殊意义。2号牙对冷测试有持续疼痛，叩诊和触诊均为阳性。影像学检查显示2号牙具有牛牙样变特征，且根尖周围有根尖周透射区。2号牙被诊断为有症状的不可逆性牙髓炎和有症状的根尖周炎。该牙分2次进行根管治疗。全景片显示有多颗牙齿呈牛牙样变。随访时，进行了锥形束计算机断层扫描以进一步评估和诊断牛牙样变。10颗磨牙呈现牛牙样变，其中包括7颗高度牛牙样变、2颗中度牛牙样变和1颗低度牛牙样变。在牛牙样变牙齿中观察到根管解剖结构的高度变异，包括上颌和下颌高度牛牙样变牙齿出现C形根管。
本病例描述了1例无特定综合征患者有10颗牛牙样变牙齿以及1例上颌第二磨牙高度牛牙样变的根管治疗情况。锥形束计算机断层扫描成像在评估和处理牛牙样变牙齿的牙根和根管解剖复杂性方面可能有用。
