不同表面处理方法对氧化锆基底材料与饰面瓷结合强度的影响
Effect of different surface processes on the bond strength between zirconia framework and veneering ceramic
作者：宫琪, 孙惠强, 胡以俊, 陈佳, 丁伟山
Author：Qi Gong, Huiqiang Sun, Yijun Hu, Jia Chen, Weishan Ding
收稿日期：2017-01-16 年卷（期）页码：2017,35(6):598-598-602
期刊名称：华西口腔医学杂志
Journal Name：West China Journal of Stomatology
关键字：氧化锆,饰面瓷,表面处理,结合强度,
Key words：zirconia,veneering ceramic,surface treatment,bond strength,
基金项目：山东省科技发展计划（2014GSF118065）
中文摘要
目的 比较不同表面处理方法对氧化锆基底与饰面瓷之间的结合强度及结合界面微观结构的影响。方法 将WIELAND氧化锆瓷块胚体烧结制成10 mm×5 mm×5 mm大小试件33个。将试件随机分为3组,每组11个。喷砂组在烧结前进行喷砂处理;处理剂组先喷砂处理,再烧结结合衬底瓷;对照组不做处理。3组基底瓷材料采用粉浆涂塑法烧结5 mm×5 mm×5 mm大小的饰面瓷。每组随机抽取1个基底瓷及双层瓷试件,采用扫描电镜、能谱分析方法,研究氧化锆底瓷与饰面瓷之间的结合情况。其余试件则通过电子拉伸机测试结合界面的剪切强度,并用SPSS 17.0软件对实验数据进行统计学分析。结果 喷砂组、处理剂组、对照组试件的剪切强度分别为（18.06±0.59）、（21.04±1.23）、（13.80±1.54） MPa,各组间差异均有统计学意义（P<0.01）。结论 氧化锆胚体烧结前喷砂处理能提高氧化锆基底冠与饰面瓷的结合强度,结合衬底瓷的应用能提高氧化锆基底冠与饰面瓷的结合强度。
英文摘要
ObjectiveTo compare the effect of different surface processes on bond strength and microscopic structure using a scanning electron microscope (SEM) and an energy distribution spectrum (EDS) at the bonding interface between zirconia framework and veneering ceramic.MethodsWIELAND zirconia core material was cut into 33 rectangular specimens and fired on into rectangular specimens (10 mm×5 mm×5 mm). The specimens were randomly divided into three groups (n=11). The sandblasting group was sandblasted before firing. The sandblasting and liner coverage group was sandblasted before firing and then sintered with liner coverage after firing. The control group was not processed. All the veneering ceramics (5 mm×5 mm×5 mm) were fired on into the zirconia substructure by slip-casting technique. One bilayered specimen in each group was prepared for SEM and EDS to examine the bonding conditions. The other specimens were measured for shear force using an electronic universal dynamometer. The data obtained were analyzed by using the statistical software SPSS 17.0.ResultsThe values of the shear bond strength test were (13.80±1.54) MPa for the control group, (18.06±0.59) MPa for the sandblasting group, and (21.04±1.23) MPa for the sandblasting and liner coverage group. Significant differences existed among the three groups (P<0 .01).ConclusionAbrasion before firing significantly increases the shear bond strength of zirconia to veneering porcelain. The use of porcelain combined with liner increases the shear bond strength.
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