高嵌体与纤维桩核冠对邻牙合面缺损上颌第一前磨牙修复后抗折力影响的实验研究  

An Experimental Study on Fracture Resistance of Maxillary First Premolars with Adjacent Occlusal Defects Restored with Onlay and Fiber Post-Core Crown

作　　者：闫玉娟 吴宁宁 周亚 Yan Yujuan;Wu Ningning;Zhou Ya(Department of Prosthodontics,Henan Provincial Stomatological Hospital,The First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China;Department of Stomatology,The First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China)

机构地区：[1]郑州大学第一附属医院大学路口腔修复科,郑州450052 [2]郑州大学第一附属医院口腔科,郑州450052

出　　处：《成都医学院学报》2024年第3期489-492,共4页Journal of Chengdu Medical College

摘　　要：目的 比较IPSe.max CAD高嵌体和纤维桩核冠对邻牙合面缺损上颌第一前磨牙修复后对抗折力的影响。方法 收集2021年9月至2023年7月在郑州大学第一附属医院因正畸而拔除的60颗上颌第一前磨牙,随机将其分为A、B、C 3组(n=20),A组、B组样本牙进行完善的根管治疗后,制备邻牙合面缺损洞型,分别采用不同的修复方法。A组行IPSe.max CAD高嵌体修复;B组行纤维桩核冠修复;C组为对照组,样本牙不作处理。记录各组折断力值、折断模式,并进行比较。结果 A组、B组和C组折裂载荷值分别为(781.25±61.23)N、(712.51±54.36)N和(420.28±41.28)N,3组间比较,差异有统计学意义(F=262.154,P<0.001),A组的折裂荷载值最高;3组折裂模式均以可修复折裂为主,组间比较差异无统计学意义(P>0.05)。结论 邻牙合面缺损上颌第一前磨牙采用IPSe.max CAD高嵌体修复后具有较好的临床效果,抗折力较高,且折裂模式主要为可修复性折裂。Objective To compare the fracture resistance of maxillary first premolars with adjacent occlusal defects restored with IPSe.max CAD onlay and fiber post-core crown,respectively.Methods A total of 60 maxillary first premolars extracted due to orthodontics in the First Affiliated Hospital of Zhengzhou University from September 2021 to July 2023 were collected and randomly divided into group A,group B and group C(n=20).Group A and group B received cavity preparation of adjacent occlusal surface after completion of endodontic treatment.Different restoration methods were performed,with group A receiving IPSe.max CAD onlay and group B receiving fiber post-core crown.No treatment was performed in group C(control group).The fracture force and fracture mode in each group were recorded and compared.Results The fracture load values of groups A,B and C were(781.25±61.23)N,(712.51±54.36)N and(420.28±41.28)N,respectively.There was significant difference in fracture load among the three groups(F=262.154,P<0.001).And the fracture load was the highest in group A.The fractures in the three groups were mainly repairable ones,and there was no significant difference in fracture mode among the three groups(P>0.05).Conclusion IPSe.max CAD onlay shows good clinical effect and high fracture resistance in the restoration of maxillary first premolars with adjacent occlusal defects,and the fractures are mainly repairable ones.

关 键 词：高嵌体 纤维桩核冠 邻牙合面缺损 抗折力 上颌第一前磨牙 

分 类 号：R783.1[医药卫生—口腔医学]