摘要
目的:研究可切削氧化锆陶瓷与热压铸法和粉浆涂塑法两种不同加工方式的饰面瓷之间的初期结合强度。方法:制作两种品牌的氧化钇稳定四方相可切削氧化锆陶瓷块各12个,分别以热压铸法和粉浆涂塑法在氧化锆陶瓷块表面制作饰面瓷块,随后测试各组试件的剪切结合强度,分析断裂模式,以扫描电镜和能量色散谱仪表征结合界面。结果:两种品牌的可切削氧化锆与两种加工方式制作的饰面瓷初期剪切结合强度差异无统计学意义。扫描电镜观察显示结合界面紧密,能谱分析显示热压铸法制备的饰面瓷/氧化锆界面处存在化学元素的相互渗透。结论:以热压铸法和粉浆涂塑法在氧化锆陶瓷基底表面制作饰面瓷不存在初期结合强度上的差异。
Objective：To determine the shear bond strengths of veneering porcelains via heat-pressed method or powder-liquid method to machinable zirconia cores.Methods：Bilayered zirconia/veneer blocks were fabricated with two brands of zirconia cores and two different veneering porcelains,using a heat-pressed layering technique or a conventional powder-liquid layering technique.Initial shear bond strengths between veneer and core were measured.Interfaces of veneer/core specimens were examined with scanning electron microscopy（SEM） and energy dispersive spectrometer（EDS）.Results：No statistical difference of initial shear bond strength was shown between two zirconia core brands,and between two veneer layering techniques.Conclusion：Heat-pressed layering technique obtained good veneer/core bond strength as well as conventional powder-liquid layering technique.
出处
《南京医科大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第9期1293-1297,共5页
Journal of Nanjing Medical University(Natural Sciences)
基金
江苏省高校高新技术产业化推广项目(JH10-27)
江苏省高校优势学科建设工程资助项目
江苏省"科技兴卫"工程领军人才项目(2012-48)
关键词
氧化锆
瓷瓷结合
饰面瓷
剪切强度
zirconia
bilayered structure
veneer
shear bond strength
