无箍效应时不同黏结材料对扁圆形根管旁路充填后采用CAD/CAM一体化纤维桩核修复的黏结效果  

Bonding effects of different adhesive materials with no ferrule effect in the dental restoration with CAD/CAM-fabricated one-piece fiber post-and-core after bypass obturation of oval root canals

作　　者：齐鲁[1] 王星[2] 吴佩玲[1] Qi Lu;Wang Xing;Wu Pei-ling(Department of Stomatology, the Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830063, Xinjiang Uygur Autonomous Region, China;Department of Prosthodontics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China)

机构地区：[1]新疆医科大学第二附属医院口腔科,新疆维吾尔自治区乌鲁木齐市830063 [2]新疆医科大学第一附属医院口腔科修复科,新疆维吾尔自治区乌鲁木齐市830054

出　　处：《中国组织工程研究》2018年第14期2162-2167,共6页Chinese Journal of Tissue Engineering Research

基　　金：新疆维吾尔自治区青年自然科学基金自助项目(2015211C111):无箍效应时不同桩核在扁根管旁路充填后牙体修复的实验研究~~

摘　　要：背景:一体化玻璃纤维桩核兼顾了铸造桩核良好的密合性和玻璃纤维材料适宜的弹性模量,如何为CAD/CAM一体化纤维桩核选择一种在无箍效应作用下合理的黏结系统,成为临床工作的重点。目的:比较3种黏结材料在无箍效应时,对扁圆形根管旁路充填后采用CAD/CAM一体化纤维桩核修复的黏结效果。方法:将90颗离体人下颌第一前磨牙随机分为3组,截冠后统一工作长度为14 mm,每组30颗,在根管手术显微镜下运用ProT aper Next镍钛系统进行根管旁路预备,统一采用热垂直加压充填技术进行根管旁路充填;使用1-4#Pesso钻去除根管内牙胶预备桩道,预备深度为9 mm,均不预备牙本质肩领,采用CAD/CAM技术制作一体化纤维桩核,3组分别运用Ketac^(TM) Cem Easymix玻璃离子、ONE-STEP PLUS通用型光固化黏结剂及RelyX ^(TM) Unicem 2自混自黏结树脂水门汀将CAD/CAM一体化纤维桩核黏结于桩道内,采用万用力学测量仪分析3种黏结材料对CAD/CAM一体化纤维桩的黏结效果。结果与结论:ONE-STEP PLUS通用型光固化黏结剂组、RelyX ^(TM) Unicem 2自混自黏结树脂水门汀组修复体的脱位力、微拉伸强度强于Ketac^(TM) Cem Easymix玻璃离子组(P<0.05);RelyX ^(TM) Unicem 2自混自黏结树脂水门汀组修复体的脱位力、微拉伸强度略高于ONE-STEP PLUS通用型光固化黏结剂组,但差异无显著性意义。结果表明在无箍效应时,应用CAD/CAM一体化纤维桩进行扁圆形根管旁路充填后的牙体修复,以RelyX ^(TM) Unicem 2自混自黏结树脂进行修复能获得较为良好的黏结效果。BACKGROUND： One-piece glass fiber post-and-core achieves a good sealing between cast-post and core and provides a suitable elastic modulus of the glass fiber material. Therefore, selecting a reasonable bonding system for the CAD/CAM-fabricated fiber post-and-core with no ferrule effect has become an important issue in clinical practice. OBJECTIVE： To compare the bonding effects of three kinds of adhesive materials without ferrule effect in the CAD/CAM-fabricated dental restoration after bypass obturation of oval root canals. METHODS： Ninety extracted first mandibular premolars with the working length set to 14 mm were randomized into three groups（n=30 per group）. The root canal was prepared with the Pro Taper next nickel titanium system under a dental operating microscope. The bypass obturation with oval root canals was achieved using the warm gutta-percha vertical condensation technique. 1-4 # Pesso drills were used to remove the gum in the root canal, with the preparatory depth of 9 mm, but with no shoulder collar. CAD/CAM technology was used to prepare one-piece fiber post-and-cores which were bonded using the Ketac^TM Cem Easymix glass ion, ONE-STEP PLUS universal UV-curable adhesive and RelyX ^TM Unicem 2 self-adhesive resin cement in different groups. The bonding effect of three kinds of adhesive materials was analyzed by using a universal mechanical measuring instrument. RESULTS AND CONCLUSION： Compared with the Ketac^TM Cem Easymix glass ion group, the debonding force and micro-tensile strength were significantly stronger in the other two groups（P〈0.05）, while compared with the ONE-STEP PLUS universal UV-curable adhesive group, the debonding force and micro-tensile strength were slightly higher in the RelyX^TM Unicem 2 self-adhesive resin cement group, but there was no significant difference between the two groups. To conclude, RelyX ^TM Unicem 2 self-adhesive resin cement in the absence of ferrule effect can achieve better bonding effect on the CAD/CAM-fabricated one-piece fiber post-an

关 键 词：桩核技术 根管充填 牙科粘固剂 组织工程 口腔材料 箍效应 扁圆形根管 旁路充填 CAD/CAM一体化纤维桩核 黏结效果 生物材料 

分 类 号：R318[医药卫生—生物医学工程]