Surface modification for enhanced silanation of zirconia ceramics.
Surface modification for enhanced silanation of zirconia ceramics.
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DOI：
10.1016/j.dental.2009.03.008
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发表时间：
2009-09
期刊：
影响因子：
5
通讯作者：
Stoner, B. R.
中科院分区：
文献类型：
--
作者：
Piascik, J. R.;Swift, E. J.;Thompson, J. Y.;Grego, S.;Stoner, B. R.
CAPTIVEThe的总体目标，这项研究是开发一种实用的方法来化学改性的高强度牙科陶瓷（即氧化锆）的表面，以促进可行的，强大的粘合剂粘接使用市售的硅烷和树脂cements.METHODSInvestigation集中在一种新的方法，表面功能化氧化锆与SixOy的“种子”层，将促进与传统硅烷的化学键合。使用为含二氧化硅材料（硅烷和树脂水泥）设计的标准技术将ProCAD和ZirCAD块粘合到尺寸相似的复合块上。锆CAD块进行处理与SiCl 4气相沉积在两个不同的条件下，然后结合。制备微拉伸棒并以lmm/min的十字头速度经受拉伸力，使用扫描电子显微镜来分析断裂表面并确定失效模式;复合材料内聚失效（复合材料内的部分或完全内聚失效）或粘合失效（部分或完全粘合失效）JET峰值应力值使用单因素ANOVA（p<0.05）分析。微拉伸测试结果显示，氧化锆与2.6nm SixOy厚的“种子”层的表面处理是类似的强度瓷组（对照）。失效模式分析表明，上述组的复合材料内失效百分比较高。其他组测试有较低的强度值，并显示粘合失效characteristics.CONCLUSIONMechanical数据支持，利用气相氯硅烷预处理存款超薄硅类种子层，可以提高粘附氧化锆使用传统的硅烷化和粘接技术。这项技术可能会对当今高强度牙科材料的使用产生临床影响。
OBJECTIVEThe overall goal of this research was to develop a practical method to chemically modify the surface of high strength dental ceramics (i.e. zirconia) to facilitate viable, robust adhesive bonding using commercially available silanes and resin cements.METHODSInvestigation focused on a novel approach to surface functionalize zirconia with a SixOy“seed” layer that would promote chemical bonding with traditional silanes. ProCAD and ZirCAD blocks were bonded to a dimensionally similar composite block using standard techniques designed for silica-containing materials (silane and resin cement). ZirCAD blocks were treated with SiCl4by vapor deposition under two different conditions prior to bonding. Microtensile bars were prepared and subjected to tensile forces at a crosshead speed of 1mm/min scanning electron microscopy was used to analyze fracture surfaces and determine failure mode; either composite cohesive failure (partial or complete cohesive failure within composite) or adhesive failure (partial or complete adhesive failure).RESULTSPeak stress values were analyzed using single-factor ANOVA (p<0.05). Microtensile testing results revealed that zirconia with a surface treatment of 2.6nm SixOythick “seed” layer was similar in strength to the porcelain group (control). Analysis of failure modes indicated the above groups displayed higher percentages of in-composite failures. Other groups tested had lower strength values and displayed adhesive failure characteristics.CONCLUSIONMechanical data support that utilizing a gas-phase chloro-silane pretreatment to deposit ultra-thin silica-like seed layers can improve adhesion to zirconia using traditional silanation and bonding techniques. This technology could have clinical impact on how high strength dental materials are used today.
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影响因子：
2.2
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