Surface treatment of feldspathic porcelain: scanning electron microscopy analysis.
Surface treatment of feldspathic porcelain: scanning electron microscopy analysis.
复制标题
DOI：
10.4047/jap.2014.6.5.387
复制
发表时间：
2014-10
期刊：
影响因子：
--
通讯作者：
Moravej-Salehi E
中科院分区：
文献类型：
--
作者：
Valian A;Moravej-Salehi E
经过处理的陶瓷的形貌分析提供了关于影响树脂陶瓷微机械保持和锁定的表面纹理的定性信息。本研究旨在比较长石瓷不同表面处理后的表面微观结构。本实验选用72个瓷盘，随机分为12组（n=6）。在9组中，长石表面在2、3或4 bar压力下进行喷砂，喷砂时间为5、10或15秒，喷砂距离为5 mm，喷砂距离为50µm氧化铝颗粒。第10组，9.5%氢氟酸凝胶作用120秒。在第11组，试样在3bar压力下喷砂10秒，然后用HF调节。第12组先进行HF处理，然后在3bar压力下喷砂10秒。然后在不同倍率的扫描电子显微镜（SEM）下对所有标本进行评估。HF处理样品的SEM图像显示出不同大小的深层孔隙；喷砂后的表面更加均匀，尖峰更明显。喷砂压力和喷砂时间的增加使表面粗糙度增大。两种组合技术的SEM图像显示，在第11组（先喷砂）中，HF导致孔隙度更深；而第12组（先用HF处理）喷砂造成不规则，均匀性较差。所有的表面处理都增加了表面积并造成了多孔表面。HF处理组孔隙度明显高于单纯喷砂处理组。
Topographic analysis of treated ceramics provides qualitative information regarding the surface texture affecting the micromechanical retention and locking of resin-ceramics. This study aims to compare the surface microstructure following different surface treatments of feldspathic porcelain. This in-vitro study was conducted on 72 porcelain discs randomly divided into 12 groups (n=6). In 9 groups, feldspathic surfaces were subjected to sandblasting at 2, 3 or 4 bar pressure for 5, 10 or 15 seconds with 50 µm alumina particles at a 5 mm distance. In group 10, 9.5% hydrofluoric acid (HF) gel was applied for 120 seconds. In group 11, specimens were sandblasted at 3 bar pressure for 10 seconds and then conditioned with HF. In group 12, specimens were first treated with HF and then sandblasted at 3 bar pressure for 10 seconds. All specimens were then evaluated under scanning electron microscopy (SEM) at different magnifications. SEM images of HF treated specimens revealed deep porosities of variable sizes; whereas, the sandblasted surfaces were more homogenous and had sharper peaks. Increasing the pressure and duration of sandblasting increased the surface roughness. SEM images of the two combined techniques showed that in group 11 (sandblasted first), HF caused deeper porosities; whereas in group 12 (treated with HF first) sandblasting caused irregularities with less homogeneity. All surface treatments increased the surface area and caused porous surfaces. In groups subjected to HF, the porosities were deeper than those in sandblasted only groups.
登录
查看更多内容
影响因子：
7.6
作者：
Kern, M.;Barloi, A.;Yang, B.
通讯作者：
Yang, B.
影响因子：
2.6
作者：
Falkensammer, Frank;Jonke, Erwin;Bantleon, Hans Peter
通讯作者：
Bantleon, Hans Peter
影响因子：
2.1
作者：
Kara, Haluk Baris;Ozturk, A. Nilgun;Ozturk, Bora
通讯作者：
Ozturk, Bora
影响因子：
4.6
作者：
Kupiec, KA;Wuertz, KM;Wilwerding, TM
通讯作者：
Wilwerding, TM
影响因子：
5
作者：
Loomans, B. A. C.;Mine, A.;Van Meerbeek, B.
通讯作者：
Van Meerbeek, B.