Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China.
Dent Traumatol. 2010 Dec;26(6):516-20. doi: 10.1111/j.1600-9657.2010.00931.x.
Tooth dilaceration refers to a dental anomaly characterized by an abrupt deviation in the longitudinal axis of tooth. Crown-root dilaceration is diagnosed in teeth with sharp angles at the cement-enamel junction. The greater the bending degree is, the less chance there is for successful teeth preservation and relocation. In this report, a clinical case of an impacted maxillary central incisor with severe crown-root dilacerations was described by means of an operative evaluation using three-dimensional dental computed tomography and a multidisciplinary approach that included surgical, orthodontic, endodontic, prosthetic and periodontal therapy.
牙扭转是一种牙齿畸形，其特征为牙齿的长轴发生突然改变。冠根扭转是在釉牙骨质界处呈锐角的牙齿中诊断出来的。弯曲程度越大，成功保存和复位牙齿的机会就越小。在本报告中，通过三维牙科计算机断层扫描进行手术评估，并采用多学科方法（包括手术、正畸、牙髓、修复和牙周治疗），描述了一例上颌中切牙严重冠根扭转的埋伏牙临床病例。
