氧化锆底瓷与饰瓷结合力的实验评估

Evaluation of the Bond Strength between Zirconia Core and Veneering

目的:通过与钴铬合金-金属烤瓷结合力进行比较,对氧化锆底瓷-饰瓷结合力进行评估。方法:制作不同材料试件共5组,每组各10个试件。每个试件由长15mm,直径8mm的圆柱形底核与厚2mm,直径8mm的饰面构成。底核/饰面材料与分组如下:组1(对照组)钴铬合金/IPS d.SIGN烤瓷粉(Ivoclar);组2IPS e.maxZir-Cad氧化锆瓷块/IPS e.maxZirPress专业氧化锆饰瓷(Ivoclar);组3IPS e.maxZirCad氧化锆瓷块/IPS e.maxCeram牙本质磁粉(Ivoclar);组4Lava Frame氧化锆瓷块(3MESPE)/Lava Ceram磁粉(3MESPE);组5Lava Frame氧化锆瓷块(3MESPE)/IPS e.maxCeram牙本质磁粉(Ivoclar)。运用万能测试机对各试件进行剪切试验,剪切速度参数设定为0.50mm/min。实验所得结果采用SPSS18.0软件进行ANOVA单因素方差分析和LSD多重检验。结果:组1:13.87MPa,组2:13.10MPa,组3:10.97MPa,组4:12.72MPa,组5:4.77MPa。结论:氧化锆底瓷-饰瓷结合力可与钴铬合金-金属烤瓷结合力相近,热压铸塑较粉浆涂塑工艺制备的饰瓷与底瓷结合力更高,底瓷与饰瓷分别来源于不同产家时结合力最弱。

Objective： To determine whether the bond strength of veneering porcelain to a zirconia core in bilayered ceramics was similar to that of the Co-Cr metal ceramic control.Methods： Five groups of ten specimens each were fabricated,whose dimensions were 15 mm in length and 8 mm in diameter at the core,and 2 mm in thickness and 8 mm in diameter for the veneer.The groups were GR.1（control group）： Co-Cr alloy/IPS d.SIGN（Ivoclar）,GR.2： IPS e.maxZirCad/ IPS e.maxZirPress（Ivoclar）,GR.3： IPS e.maxZirCad/IPS e.maxCeram（Ivoclar）,GR.4： Lava Frame（3M ESPE）/ Lava Ceram（3M ESPE） and GR.5： Lava Frame（3M ESPE）/IPS e.maxCeram（Ivoclar）.A shear strength test was used in all samples with a universal testing machine.The chosen crosshead speed was of 0.50 mm/min.The obtained results were analyzed by SPSS 18.0,using a one way analysis of variance test（ANOVA） and LSD multiple comparisons test to determine whether significant differences existed between the groups（P0.05）.Results： GR.1： 13.87 MPa,GR.2： 13.10 MPa,GR.3： 10.97 MPa,GR.4： 12.72Mpa and GR.5： 4.77 Mpa.Conclusion： The bond strength of zirconia core and veneering porcelain was similar to the Co-Cr metal ceramic control.The pressed technique of veneering porcelain on zirconia cores showed the higher results than the layers technique.The lowest results were for the group using porcelains from different manufacturers.