Surface modification of several dental substrates by non-thermal, atmospheric plasma brush.
Surface modification of several dental substrates by non-thermal, atmospheric plasma brush.
复制标题
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
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发表时间：
2013-08
期刊：
影响因子：
--
通讯作者：
Wang Y
中科院分区：
文献类型：
--
作者：
Chen M;Zhang Y;Sky Driver M;Caruso AN;Yu Q;Wang Y
本研究的目的是揭示非热常压等离子体刷在四种牙科基质表面润湿性和改性方面的有效性。制备牙本质、牙釉质、Filtek Z250、Filtek LS Silorane两种复合材料（厚度~ 2mm，直径~ 10mm）。用非热常压等离子体电刷在36 ~ 38℃的温度下处理5 ~ 45 s。采用接触角测量、x射线光发射光谱（XPS）和扫描电子显微镜（SEM）研究了等离子体处理对这些表面的影响。非热常压氩等离子体电刷对四种基体的表面亲水性都有很好的改善作用。结果表明，所有基质经过5 s等离子体处理后，水接触角值显著降低。处理30 s后，该值进一步降至<5°，接近超亲水性表面的值。XPS分析表明，复合材料中牙本质/牙釉质或填料中与矿物质相关的元素百分比增加。此外，四种底物的碳（%C）百分比均降低，而%O百分比均增加。结果表明，在等离子体处理后，表面形成了新的含氧极性基团。扫描电镜表面图像显示，暴露于等离子体后，这些牙基质的形态没有发生明显变化。在不影响整体性能的情况下，等离子体刷处理可以很容易地获得超亲水性表面，而不考虑所测试的牙基体的原始亲疏水性。
The purpose of this study was to reveal the effectiveness of non-thermal atmospheric plasma brush in surface wettability and modification of four dental substrates. Specimens of dental substrates including dentin, enamel, and two composites Filtek Z250, Filtek LS Silorane were prepared (~2 mm thick, ~10 mm diameter). The prepared surfaces were treated for 5–45 s with a non-thermal atmospheric plasma brush working at temperatures from 36 to 38 °C. The plasma-treatment effects on these surfaces were studied with contact-angle measurement, X-ray photoemission spectroscopy (XPS) and scanning electron microscopy (SEM). The non-thermal atmospheric argon plasma brush was very efficient in improving the surface hydrophilicity of four substrates studied. The results indicated that water contact angle values decreased considerably after only 5 s plasma treatment of all these substrates. After 30 s treatment, the values were further reduced to <5°, which was close to a value for super hydrophilic surfaces. XPS analysis indicated that the percent of elements associated with mineral in dentin/enamel or fillers in the composites increased. In addition, the percent of carbon (%C) decreased while %O increased for all four substrates. As a result, the O/C ratio increased dramatically, suggesting that new oxygen-containing polar moieties were formed on the surfaces after plasma treatment. SEM surface images indicated that no significant morphology change was induced on these dental substrates after exposure to plasmas. Without affecting the bulk properties, a super-hydrophilic surface could be easily achieved by the plasma brush treatment regardless of original hydrophilicity/hydrophobicity of dental substrates tested.
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影响因子：
5.4
作者：
Njatawidjaja, Ellyana;Kodama, Makoto;Kogoma, Masuhiro
通讯作者：
Kogoma, Masuhiro
影响因子：
3.5
作者：
Barni, R;Riccardi, C;Meda, L
通讯作者：
Meda, L
影响因子：
3.5
作者：
Fricke, Katja;Steffen, Hartmut;Weltmann, Klaus-Dieter
通讯作者：
Weltmann, Klaus-Dieter
影响因子：
3.9
作者：
Barankin, Michael D.;Gonzalez, Eleazar, II;Hicks, Robert F.
通讯作者：
Hicks, Robert F.
影响因子：
1.1
作者：
SHOHET, JL
通讯作者：
SHOHET, JL