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上颌前牙在外力、龋坏等因素下,可导致牙根冠缺损,形成残根残冠~[1]。上颌前牙出现残根残冠后,不仅会影响患者牙齿美观及发音,还会导致根尖周围炎。桩核冠修复是治疗上颌前牙残根残冠常见方法~[2],以往所应用的金属铸造桩核根据金属机械性能,加工成根管对应的形态,作为桩核修复,但金属铸造桩核操作繁杂、等待时间长、易腐蚀变色、根折率高、复诊次数多等不足。随着口腔修复技术不断提高,玻璃纤维桩树脂核弯曲强度、拉伸强度较高,
Maxillary anterior teeth in external forces, caries and other factors, can lead to root defects, the formation of residual root canals ~ [1]. After the residual teeth of the maxillary anterior teeth residual crown, it will not only affect the patient’s teeth beautiful and pronunciation, but also lead to periapical inflammation. Post-core crown restoration is the treatment of the maxillary anterior residual root remnant crown common method ~ [2], the previous application of the metal casting post core according to the mechanical properties of metal, processed into the corresponding root canal morphology, as a post-core repair, but the metal casting pile Complex nuclear operations, long waiting time, easy to corrode discoloration, high root fracture rate, referral frequency and more. With the continuous improvement of oral repair techniques, the glass fiber post-core resin bending strength, high tensile strength,