| Er,Cr:YSGG激光制洞对光固化复合树脂边缘微渗漏的影响 |
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| 引用本文： | 贾兴亚,王凤艳,刘策.Er,Cr:YSGG激光制洞对光固化复合树脂边缘微渗漏的影响[J].牙体牙髓牙周病学杂志,2011(8):441-444. |
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| 作者姓名： | 贾兴亚 王凤艳 刘策 |
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| 作者单位： | 中国医科大学口腔医学院干诊科;沈阳市铁西区牙病防治所口腔内科; |
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| 基金项目： | 辽宁省医学高峰建设工程重点科研项目(200909) |
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| 摘 要： | 目的:比较在自酸蚀黏结剂的应用条件下,Er,Cr:YSGG激光制备与传统牙钻制备离体牙牙颈部洞对光固化复合树脂边缘微渗漏的影响。方法:将20个因正畸拔除的新鲜完整无龋损、无隐裂、无充填物的前磨牙随机分为两组(n=10),分别使用牙钻和Er,Cr:YSGG激光制备牙颈部洞。窝洞制备后均匀涂覆FL-BOND,用TPH复合树脂进行分层充填,打磨、抛光,37℃生理盐水中存放7 d后,进行500次温度循环实验(5±2)℃—(55±2)℃。将上述所有样本置0.5%碱性品红液中室温浸泡24 h后,沿牙体长轴通过修复体正中纵行剖开,采用染料渗入法和扫描电镜方法观察充填体微渗漏情况,运用SPSS 11.0软件包进行统计学处理。结果:牙钻制备组与激光组相比,无论牙合壁还是龈壁的染料渗入评分和边缘微缝隙宽度均无显著性差异(P>0.05)。结论:在自酸蚀黏结剂的应用条件下,Er,Cr:YSGG激光制洞不能显著减少光固化复合树脂边缘微渗漏的发生。
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| 关 键 词： | Er Cr:YSGG激光 微渗漏 扫描电子显微镜 复合树脂 |
The effect of Er,Cr:YSGG laser irradiation on the microleakage of composite resin restorations |
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| JIA Xing-ya,WANG Feng-yan,LIU Ce.The effect of Er,Cr:YSGG laser irradiation on the microleakage of composite resin restorations[J].Chinese Journal of Conservative Dentistry,2011(8):441-444. |
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| Authors: | JIA Xing-ya WANG Feng-yan LIU Ce |
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| Institution: | JIA Xing-ya,WANG Feng-yan,LIU Ce(VIP Department,School of Stomatology,China Medical University,Shenyang 110002,China) |
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| Abstract: | AIM:To compare the microleakage of Class V resin composite restorations following Er,Cr:YSGG laser and high-speed rotary preparation using a self-etch adhesive system.METHODS:Twenty orthodontically extracted human premolars were randomly divided into two groups(n=10) and Class V cavities were prepared in the teeth with Er,Cr:YSGG laser or bur.The cavities were then coated with FL-BOND adhesive system and TPH resin composite was used for restoration.After finishing and polishing,the teeth were stored for sev... |
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| Keywords: | Er Cr:YSGG laser microleakage SEM composite resin |
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