不同树脂水门汀与锂硅玻璃陶瓷界面断裂韧性的比较。

Interfacial fracture toughness of different resin cements bonded to a lithium disilicate glass ceramic.

机构信息

Department of Dental Biomaterials, School of Dentistry/Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran.

出版信息

J Dent. 2012 Feb;40(2):139-45. doi: 10.1016/j.jdent.2011.12.005. Epub 2011 Dec 9.

DOI:10.1016/j.jdent.2011.12.005

PMID:22182467

Abstract

OBJECTIVES

To evaluate the effect of HF acid etching and silane treatment on the interfacial fracture toughness of a self-adhesive and two conventional resin-based cements bonded to a lithium disilicate glass ceramic.

METHODS

Lithium disilicate glass ceramic discs were prepared with two different surface preparations consisting of gritblasted with aluminium oxide, and gritblasted and etched with hydrofluoric acid. Ceramic surfaces with a chevron shaped circular hole were treated by an optimized silane treatment followed by an unfilled resin and then three different resin cements (Variolink II, Panavia F2, and Multilink Sprint). Specimens were kept in distilled water at 37°C for 24h and then subjected to thermocycling. The interfacial fracture toughness was measured and mode of failures was also examined. Data were analysed using analysis of variance followed by T-test analysis.

RESULTS

No statistically significant difference in the mean fracture toughness values between the gritblasted and gritblasted and etched surfaces for Variolink II resin cement was found (P>0.05). For the gritblasted ceramic surfaces, no significant difference in the mean fracture toughness values between Panavia F2 and Variolink II was observed (P>0.05). For the gritblasted and etched ceramic surfaces, a significantly higher fracture toughness for Panavia F2 than the other cements was found (P<0.05).

CONCLUSIONS

The interfacial fracture toughness for the lithium disilicate glass ceramic system was affected by the surface treatment and the type of luting agent. Dual-cured resin cements demonstrated a better bonding efficacy to the lithium disilicate glass ceramic compared to the self-adhesive resin cement.

CLINICAL SIGNIFICANCE

The lithium disilicate glass ceramic surfaces should be gritblasted and etched to get the best bond when used with Panavia F2 and Multilink Sprint resin cements, whereas for the Variolink II only gritblasting is required. The best bond overall is achieved with Panavia F2.

摘要

目的

评估氢氟酸蚀刻和硅烷处理对自粘接和两种传统树脂基粘结剂与锂硅玻璃陶瓷界面断裂韧性的影响。

方法

采用两种不同的表面处理方法制备锂硅玻璃陶瓷圆盘，分别为氧化铝喷砂处理和氢氟酸喷砂蚀刻。采用优化的硅烷处理对具有 V 形圆形孔的陶瓷表面进行处理，然后涂覆未填充树脂，再涂覆三种不同的树脂粘结剂（Variolink II、Panavia F2 和 Multilink Sprint）。将试件在 37°C 的蒸馏水中保存 24h 后，进行热循环。测量界面断裂韧性并检查失效模式。数据采用方差分析和 T 检验分析。

结果

Variolink II 树脂粘结剂在喷砂和喷砂蚀刻表面的平均断裂韧性值之间无统计学差异（P>0.05）。对于喷砂陶瓷表面，Panavia F2 和 Variolink II 的平均断裂韧性值之间无显著差异（P>0.05）。对于喷砂和蚀刻陶瓷表面，Panavia F2 的断裂韧性明显高于其他粘结剂（P<0.05）。