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随着患者对美观的要求增强,全瓷修复材料应用增多,玻璃渗透氧化铝核冠使全瓷冠抗压强度有很大提高。为获得瓷与粘接剂间稳定的粘接,对表面处理方法进行了很多的研究。玻璃渗透氧化铝陶瓷的高铝成分对于酸蚀及硅偶联剂的应用产生的粘接效果不理想。本研究目的是在两种树脂粘接剂及不同表面处理方法间探索取得高粘接强度的方法,进一步确定瓷表面体积丧失量并评价表面结构改变与喷砂处理的关系。 材料和方法 制作玻璃渗透氧化铝陶瓷试件标本40个,直径5mm,厚3mm。试件随机分两组,每组20个,每1个试件清洗、称重。Ⅰ组、Ⅱ组分别用50μm Al_2O_3,和1～3μm的合成金刚砂喷砂、清洗、称重,计算重量变化,转换为体积失量,测表面粗糙度。将Ⅰ组、Ⅱ组再分两小组分别用Panavia与Super-
With the enhancement of the aesthetic requirements of patients, the application of all-ceramic restoration materials increased, and the glass-infiltrated alumina core greatly enhanced the compressive strength of all-ceramic crowns. In order to obtain a stable bond between porcelain and adhesive, a great deal of research has been done on the surface treatment method. The high alumina content of glass-infiltrated alumina ceramics is not ideal for etching and application of silicon coupling agents. The purpose of this research is to explore the method of obtaining high bonding strength between two kinds of resin adhesives and different surface treatment methods to further determine the loss of porcelain surface volume and evaluate the relationship between surface structure change and sandblasting. MATERIALS AND METHODS Fabrication of 40 samples of glass-infiltrated alumina ceramic specimens with a diameter of 5 mm and a thickness of 3 mm. Specimens were randomly divided into two groups, each group of 20, each one specimen cleaning, weighing. Group Ⅰ and group Ⅱ were sandblasted, cleaned and weighed with 50μm Al 2 O 3 and 1 ~ 3μm synthetic emery, respectively. The weight change was calculated and converted into volume loss and surface roughness. The group I and group II were sub-divided into two groups with Panavia and Super-