Abstract：
Two fractured maxillary central incisors were restored via the crown fragment reattachment technique with adhesive systems and composite resin material. A long-term successful outcome was achieved after 4 years of follow-up. The patient presented with fractured maxillary central incisors, and a comprehensive intraoral and radiographic examination revealed that both teeth had extended crown fractures with no pulpal exposure (Class II, Ellis and Davey). The tooth fragments were thoroughly cleaned and inspected before being repositioned. Both fragments were in excellent condition with almost no pieces missing. Therefore, the proposed treatment was fragment reattachment. After verifying the repositioning and adaptation of the fractured fragments, a flowable composite was used to perform the reattachment procedure under rubber dam isolation. With modern dental adhesives, the reattachment of tooth fragments in good condition is considered a more conservative option for restoring tooth morphology, esthetics, and function. Although one tooth showed signs of irreversible pulpitis and required root canal treatment 2 weeks after the restoration, the clinical and radiographic evaluations at the 4-year follow-up visits confirmed the success of the restorative treatment. The restorations showed good functional and esthetic outcomes after 4 years of follow-up.
摘要：
此病例报告旨在描述一种详细的临床方案，以利用带有粘合剂系统和复合树脂材料的牙冠碎片再附着技术来恢复两个上颌中切牙。经过4年的随访，取得了长期成功的结果。患者出现上颌中切牙骨折。全面的口腔内和影像学检查显示，两颗牙齿都有扩展的牙冠骨折，没有牙髓暴露（II类，埃利斯和戴维斯）。在重新定位之前彻底清洁和检查牙齿碎片。两个碎片都处于良好状态，几乎没有零件丢失。因此,建议的治疗方法是片段再附着技术。在验证了位置和适应断裂片段后，在橡胶坝隔离下，使用可流动的复合材料进行重新连接程序。随着粘合剂牙科的当前进步，牙齿碎片重新连接，如果存在状况良好，被认为是恢复形态学的更保守的选择，美学和功能方面。尽管一颗牙齿显示出不可逆牙髓炎的迹象，修复后2周需要根管治疗，根据临床和影像学评估,4年的随访证实了恢复性治疗的成功.经过四年的随访，患者表现出良好的功能和美学结果。
