[1]邓　刚,康　彪,田　华.光固化时间对3种自酸蚀黏合剂微拉伸强度的影响[J].新乡医学院学报,2017,34(7):623-626.[doi:10.7683/xxyxyxb.2017.07.018]
　DENG Gang,KANG Biao,TIAN Hua.Influence of light curing time on microtensile bonding strength of three self-etch adhesives[J].Journal of Xinxiang Medical University,2017,34(7):623-626.[doi:10.7683/xxyxyxb.2017.07.018]
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光固化时间对3种自酸蚀黏合剂微拉伸强度的影响
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《新乡医学院学报》[ISSN:1004-7239/CN:41-1186/R]

卷:
34
期数:
2017年7
页码:
623-626
栏目:
临床研究
出版日期:
2017-07-05

文章信息/Info

Title:
Influence of light curing time on microtensile bonding strength of three self-etch adhesives
作者:
邓　刚1; 康　彪2; 田　华1
（1.焦作市人民医院口腔科，河南　焦作　454002；2.96531部队门诊部，河南　洛阳　471000）
Author(s):
DENG Gang1; KANG Biao2; TIAN Hua1
（1.Department of Stomatology，the People′s Hospital of Jiaozuo City，Jiaozuo 454002，Henan Province，China；2.Department of Outpatient,the 96531 Army Force，Luoyang 471000，Henan Province，China）
关键词:
光固化时间; 牙本质粘接; 自酸蚀黏合剂; 微拉伸强度
Keywords:
curing time; dentin bonding; microtensile bonding strength
分类号:
R783.1
DOI:
10.7683/xxyxyxb.2017.07.018
文献标志码:
A
摘要:
目的　探讨光固化时间加倍后对3种自酸蚀黏合剂牙本质粘接强度的影响。方法　选用18颗拔出的无龋人下颌磨牙，暴露其??面牙本质，按3种自酸蚀黏合剂Easy One（EO）、G-Bond（GB）、Clearfil SE Bond（SE）随机分为6组，每组3颗，其中3组按黏合剂说明使用，作为对照组，另3组将光固化时间加倍，作为实验组。在暴露的牙本质上分层粘接固化复合树脂Z350，厚约4 mm，37 ℃水域保存24 h后将牙齿在??面纵横切割成粘接面积约1 mm×1 mm的条状试件，在万能材料试验机上测试。试件断面的特征经体视显微镜分型后在透射电镜下观察。结果　对照组3种自酸蚀黏合剂按说明固化后微拉伸强度（MTBS）分别为（19.91±3.45）、（16.18±3.13）、（35.34±3.47）MPa，实验组分别为（28.03±3.24）、（25.31±2.69）、（48.17±4.28）MPa；对照组3种自酸蚀黏合剂中SE的MTBS最大，显著大于EO、GB（P<0.05），EO、GB的MTBS比较差异无统计学意义（P>0.05）；光固化时间加倍后，实验组EO、GB、SE 3种黏合剂的MTBS均大于相应的对照组（P<0.05），且SE的MTBS最大，显著大于EO、GB（P<0.05），EO、GB的MTBS比较差异仍无统计学意义（P>0.05）。断裂模式多数呈界面破坏和混合破坏，可见少量复合树脂的内聚破坏，无牙本质的内聚破坏，实验组和对照组EO、GB、SE 3种自酸蚀黏合剂不同光固化时间的试件断裂模式比较差异均无统计学意义（P>0.05）。结论　延长光固化时间可提高自酸蚀黏合剂的微拉伸强度，对试件的断裂模式影响不大。
Abstract:
Objective　To explore the effect of doubled curing time on microtensile bond strengths（MTBS）of three self-etch adhesives.Methods　Eighteen extracted caries-free human mandibular molars with exposed occlusal dentin surface were selected and randomly divided into six groups according to three kinds of self-etch adhesives［Easy One （EO），G-Bond （GB），Clearfil SE Bond （SE）］，with three teeth in each group.Three groups were applied with the adhesives according to the manufacturers′ instructions as control groups and the other three groups were treated with doubled curing time as experimental groups.Resin composite build-ups （4 mm in height）were constructed incrementally with Z350 onto the exposed dentin surfaces.After 24 h storage in distilled water at 37 ℃，the bonded teeth were vertically sectioned into serial slabs，and further into beams with cross-sectional areas of 1 mm×1 mm.Each beam was tested on instron machine.The fractured specimens were classified with a stereomicroscope and further examined by transparent electron microscopy（TEM）.Results　The mean MTBS in control group was EO（19.91±3.45）MPa，GB （16.18±3.13）MPa，SE（35.34±3.47）MPa respectively；the mean MTBS in experimental group was EO（28.03±3.24）MPa，GB（25.31±2.69）MPa，SE（48.17±4.28）MPa respectively.In control groups and experimental groups，the MTBS of SE were significantly higher than those of EO and GB （P<0.05）；there was no statistic difference in MTBS between EO and GB（P>0.05）.The MTBS of the experimental groups were significantly higher than those of the control groups （P<0.05）.Fracture modes of both control groups and experimental groups were mainly interface failure and mixed failure，rare cohesive failure in composite resin and no cohesive failure in dentin.There was no statistic difference in fracture mode between control groups andexperimental groups（P>0.05）.Conclusion　Prolonging the curing time can improve MTBS of dentin bonding with self-etch adhesives，but has little influence on the fracture mode of the bonding specimens.

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更新日期/Last Update: 2017-07-05