Correlation between microstructure of CAD/CAM composites and the silanization effect on adhesive bonding
Correlation between microstructure of CAD/CAM composites and the silanization effect on adhesive bonding
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CAD/CAM复合材料微观结构与硅烷化粘合效果的相关性
DOI：
10.1016/j.jmbbm.2019.103441
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发表时间：
2020
影响因子：
3.9
通讯作者：
Shimizu Hiroshi
中科院分区：
文献类型：
--
作者：
Yano Haruka Takesue;Ikeda Hiroshi;Nagamatsu Yuki;Masaki Chihiro;Hosokawa Ryuji;Shimizu Hiroshi
本研究的目的是利用表面自由能（SFE）分析CAD/CAM复合材料的微观结构与硅烷化对粘合剂粘合的影响之间的关系。研究了六种商用CAD/CAM复合材料，以及两种玻璃陶瓷和一种树脂的对照样品。通过形态学观察和SFE分析对样品进行了表征。根据硅烷化效应来评价样品与树脂水泥的结合特性，硅烷化效应是由样品组的剪切强度之比确定的，有和没有硅烷底漆的应用。根据微观结构将复合材料分为两类；ENAMIC表现为聚合物渗透陶瓷网络（PICN）结构，而其他复合材料则表现为分散填料（DF）结构。在PICN复合材料中，SFE的色散组分明显低于DF复合材料。另一方面，在PICN复合材料中，SFE的极性分量明显高于DF复合材料。这些SFE组分与用于PICN复合材料的微晶玻璃组分和用于DF复合材料的树脂组分相似。硅烷化效果随极性组分的增加而线性增加，随色散组分的减少而线性增加。硅烷化效果随无机含量的增加而增强。结果表明，在PICN结构的ENAMIC中，硅烷化效果最高。结果表明，硅烷化对PICN复合材料粘结效果的影响大于DF复合材料。
The aim of this study was to investigate the relationship between the microstructure of a CAD/CAM composite and the silanization effect on adhesive bonding, using surface free energy (SFE) analysis. Six commercial CAD/CAM composites, as well as control samples of two glass-ceramics and a resin, were investigated. The samples were characterized by morphological observations and SFE analysis. The bonding characteristics of the samples with the resin-cement were evaluated according to the silanization effect, which was determined from the ratio between the shear-bond strengths for the sample groups, with and without a silane-primer application. The composites were classified into two groups in terms of their microstructure; ENAMIC exhibits a polymer-infiltrated-ceramic-network (PICN) structure, while the other composites have a dispersed-filler (DF) structure. The dispersive component of the SFE was significantly lower in the PICN composite than in the DF composites. On the other hand, the polar component of the SFE was significantly higher in the PICN composite than in the DF composites. These SFE components were similar to those of glass-ceramics for the PICN composite and to those of the resin for the DF composites. The silanization effect increased linearly with the polar component or with a decrease in the dispersive component. Additionally, the silanization effect increased with the inorganic content. As a result, the silanization effect was found to be the highest for the PICN structure of ENAMIC. The results revealed that the silanization effect on the adhesive bonding is more effective for a PICN composite than for a DF composite.