[1]李晓静,赵三军,周慧,等.循环加载下4种水门汀材料对玻璃纤维桩粘固性能影响的研究[J].牙体牙髓牙周病学杂志,2013,23(12):783-787.
 LI Xiao-jing,ZHAO San-jun,ZHOU Hui,et al.Bonding properties of four different cements toglass fiber posts after cyclic loading[J].Chinese journal of conservative dentistry,2013,23(12):783-787.
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循环加载下4种水门汀材料对玻璃纤维桩粘固性能影响的研究
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《牙体牙髓牙周病学杂志》[ISSN:1006-6977/CN:61-1281/TN]

卷:
23
期数:
2013年12期
页码:
783-787
栏目:
论著
出版日期:
2013-12-31

文章信息/Info

Title:
Bonding properties of four different cements toglass fiber posts after cyclic loading
作者:
李晓静赵三军周慧芦帅高宇陈吉华
第四军医大学口腔医学院, 陕西 西安710032
Author(s):
LI Xiao-jing ZHAO San-jun ZHOU Hui LU Shuai GAO Yu CHEN Ji-hua
School of Stomatology , The Fourth Military Medical University , Xi'an 710032 , China
关键词:
纤维桩 根管牙本质 拉出实验 循环加载
Keywords:
fiber post root canal dentin pull out test cyclic loading
分类号:
R783.1
文献标志码:
A
摘要:
目的: 比较循环加载对Fuji I (FUI)、Fuji Cem (FUC)、RelyXTM Unicem (RXU)和RelyXTM ARC (RXA) 4种水门汀材料与玻璃纤维桩的粘固性能影响。方法:选取80个新鲜拔除的无龋损单根管人前磨牙,常规根管充填和桩道预备后随机分为4组(n=20),分别用4种不同水门汀将直径为1.9mm的玻璃纤维桩粘固于相应组的根管内;分别于循环加载前和循环加载10万次后检测各组粘结试件的拉出强度,扫描电镜(SEM)观察其粘结界面的微观形貌。结果:循环加载前各组的即刻拉出强度以RXA组最高(277.500±26.072)N,随后依次为RXU(218.570±12.366)N、FUC(104.300±23.112)N和FUI组(73.150±8.187)N,各组间两两相比P<0.05; 循环加载后FUI、FUC组的拉出强度显著增高(P<0.05),RXA组拉出强度显著降低(P<0.05),RXU组变化不显著(P>0.05);SEM观察显示:循环加载前后FUI和FUC两组粘结界面较加载前更致密,而RXA和RXU两组较加载前更为松散。结论:不同水门汀材料对玻璃纤维桩的粘固性能存在显著差异,循环加载可增强FUI、FUC与玻璃纤维桩的粘结耐久性。
Abstract:
AIM: To study the bond strength of Fuji I (FUI), Fuji Cem (FUC), RelyXTM Unicem (RXU) and RelyXTM ARC (RXA) to glass fiber posts before and after cyclic loading. METHODS: 80 freshly extracted sound single- rooted- canal human premolars were used. After root canal treatment and post space preparation, they were randomly divided into 4 groups(n=20). Then the 4 different cements were used respectively to bond fiber posts with the diameter of 1.9 mm. Specimens of every group were prepared for immediate Pull- out test with a universal testing machine and observed by scanning electron microscopy(SEM) before and after cyclic loading for 100000 times. RESULTS:The immediate bond strength(N) of RXA, RXU, FUC and FUI group was 277.500±26.072, 218.570±12.366, 104.300±23.112 and 73.150±8.187 respectively (between each 2 groups, P<0.05). After cyclic loading the bond strength(N) of the 4 groups were 224.450±18.305 (vs immediate, P<0.05),212.150±10.063(vs immediate, P>0.05), 176.625±30.946(vs immediate, P<0.05 ) and 107.350±22.878(vs immediate, P<0.05 ) respectively. SEM observation indicated that a more intense bonding interface was achieved in FUI and FUC groups, while a looser one appeared in the other 2 groups. CONCLUSION: Different cements have different effects on the bonding properties of glass fiber posts. Cyclic loading may increase the bonding durability of FUI or FUC with glass fiber posts.

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更新日期/Last Update: 2013-12-30