Upcera氧化锆基底材料与IPS E.max Ceram饰面瓷结合性能的研究  

Binding performance of Upcera zirconia framework material and IPS E.max Ceram veneering porcelain

作　　者：张念[1] 陈晔[1] 安靖[1] 

机构地区：[1]清华大学玉泉医院口腔科,医师北京100049

出　　处：《中华老年口腔医学杂志》2011年第3期186-188,163,共4页Chinese Journal of Geriatric Dentistry

摘　　要：目的:探讨Upcera氧化锆基底材料与IPS E.max Ceram饰面瓷的结合性能。方法:使用CAD/CAM系统,将氧化锆制成大小为30 mm×20 mm×2 mm的长方体瓷块。800℃-850℃下低温烧结2 mm饰瓷,加载速度l.0 mm/min,测试界面抗剪切强度,通过肉眼观察、能谱分析、热冲击试验等方法研究其烧结结合性能。结果:肉眼观察IPS E.max Ceram完全烧结后,与氧化锆基底材料结合良好。界面结合强度结果为31.12±5.15 MPa。能谱分析结果显示:在氧化锆区可检测到少量A12O3和SiO2,饰瓷区均未见ZrO2及Y2O3。抗热冲击试验中试样在60-240℃的整个过程中,均未发现层间或径向开裂或裂纹现象,试样开裂温度△T>240℃。结论:氧化锆与饰瓷间可观察到化学元素渗透的情况,提示两者间可能存在化学结合。Upcera氧化锆基底材料与IPS E.max Ceram饰面瓷与可达到良好匹配,符合临床使用要求。objective: To discussed the binding performance of a Upcera zirconia framework material and IPS E.max Ceram veneering porcelain.Methods: Rectangular 30 mm×20 mm×2 mm porcelain blocks were made from zirconia using the CAD/CAM system.2 mm veneering porcelain was then sintered onto blocks at a temperature of 800-850℃ with a loading speed of l mm/min.The shear bond strength of the interface was tested.Sintering binding performance was studied by visual observation,scanning electron microscopy,energy dispersive spectroscopy(EDS),thermal shock test.Results: The shear bond strength of the interface was 31.12±5.15 MPa.EDS results indicated that a small amount of A12O3 and SiO2 were present in the zirconia area,and no ZrO2 or Y2O3 was detected in the veneering porcelain area.No interlayer radial crack or flaw was found throughout the entire thermal shock test of the samples at 60-240℃.Thus,the cracking temperature of the samples exceeded 240℃.Conclusion: Chemical element infiltration exists between zirconia and the veneering porcelain,indicating the chemical bond may exist between the two layers.An excellent match between the Upcera zirconia framework and the IPS E.max Ceram veneering porcelain can be achieved,which can satisfy clinical requirements.

关 键 词：氧化锆 结合性能 能谱分析 热冲击试验 

分 类 号：R783.1[医药卫生—口腔医学]