Non-thermal atmospheric plasmas in dental restoration: improved resin adhesive penetration.
Non-thermal atmospheric plasmas in dental restoration: improved resin adhesive penetration.
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DOI：
10.1016/j.jdent.2014.05.005
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发表时间：
2014-08
影响因子：
4.4
通讯作者：
Wang Y
中科院分区：
文献类型：
--
作者：
Zhang Y;Yu Q;Wang Y
目的：研究低温等离子体处理对模型粘结剂渗透脱矿牙本质的影响。用Scotchbond Universal蚀刻剂处理制备的牙本质表面15 s，并垂直于蚀刻表面进行等分。随机选择分离的一半，用氩等离子体刷（输入电流6 mA，处理时间30 s）或温和的氩气吹（处理时间30 s，作为对照）处理。等离子体处理的试样和对照试样用含有2，2-双[4-（2-羟基-3-甲基丙烯酰氧基丙氧基）苯基]-丙烷（BisGMA）和甲基丙烯酸2-羟乙酯（HEMA）（质量比为30/70）的模型粘合剂施加，温和地风干5 s，并且光固化20 s。使用显微拉曼光谱映射跨牙本质，粘合剂/牙本质界面，和粘合剂层在1 μ m的空间分辨率的横截面标本进行了表征。扫描电镜观察粘接剂/牙本质界面形态。显微拉曼光谱结果显示等离子体处理显著提高了粘合剂的渗透性，与对照组相比，粘合剂/牙本质界面处的粘合剂含量明显更高。具体而言，使用等离子体技术的粘合剂渗透的改善是通过显著增强亲水性单体（HEMA）的渗透而实现的，同时保持疏水性单体（BisGMA）的渗透。使用SEM在粘合剂/牙本质界面处的形态观察也证实了粘合剂渗透的改善。结果进一步表明，等离子体处理有利于胶粘剂的聚合，特别是在界面区域。非热等离子体刷在改善粘合剂渗透到脱矿牙本质中的显著作用已被证明。本研究结果为等离子体在牙体修复中优化牙体与修复材料之间的粘附提供了较好的前景。
To investigate the influence of non-thermal plasma treatment on the penetration of a model dental adhesive into the demineralized dentin. Prepared dentin surfaces were conditioned with Scotchbond Universal etchant for 15 s and sectioned equally perpendicular to the etched surfaces. The separated halves were randomly selected for treatment with an argon plasma brush (input current 6 mA, treatment time 30 s) or gentle argon air blowing (treatment time 30 s, as control). The plasma-treated specimens and control specimens were applied with a model adhesive containing 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy) phenyl]-propane (BisGMA) and 2-hydroxyethyl methacrylate (HEMA) (mass ratio of 30/70), gently air-dried for 5 s, and light-cured for 20 s. Cross-sectional specimens were characterized using micro-Raman spectral mapping across the dentin, adhesive/dentin interface, and adhesive layer at 1∼micron spatial resolution. SEM was also employed to examine the adhesive/dentin interfacial morphology. The micro-Raman result disclosed that plasma treatment significantly improved the penetration of the adhesive, evidenced by the apparently higher content of the adhesive at the adhesive/dentin interface as compared to the control. Specifically, the improvement of the adhesive penetration using plasma technique was achieved by dramatically enhancing the penetration of hydrophilic monomer (HEMA), while maintaining the penetration of hydrophobic monomer (BisGMA). Morphological observation at the adhesive/dentin interface using SEM also confirmed the improved adhesive penetration. The results further suggested that plasma treatment could benefit polymerization of the adhesive, especially in the interface region. The significant role of the non-thermal plasma brush in improving the adhesive penetration into demineralized dentin has been demonstrated. The results obtained may offer a better prospect of using plasma in dental restoration to optimize adhesion between tooth substrate and restorative materials.
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通过非热，大气等离子体刷对几种牙齿底物进行表面修饰。
DOI：
10.1016/j.dental.2013.05.002
发表时间：
2013-08
期刊：
Dental materials : official publication of the Academy of Dental Materials
影响因子：
--
作者：
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通讯作者：
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影响因子：
4.4
作者：
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通讯作者：
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DOI：
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发表时间：
2002-06-05
期刊：
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH
影响因子：
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作者：
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