自粘接树脂水门汀与两种粗化处理的二硅酸锂陶瓷的粘接性能评价

Abstract

Abstract: Abstract: Objective To evaluate the effects of self-adhesive resin cements and two different surface treatments on bonding strength and durability of lithium disilicate glass-ceramic. Methods 183 pieces of lithium disilicate plates were prepared and randomly divided into two main groups to receive sandblasting or HF etching. Each group was further divided into RU (RelyX Unicem), RU200 (RelyXTM U200) and RV (silane+RelyX Veneer) three subgroups to build bonded specimens. Then all the bonded specimens were divided into two groups to receive 24 h water storage or 20000 thermal cycles, followed by shear bond strength test and failure mode analysis. Microstructure was analyzed by a scanning electron microscope. Results SBS results revealed that etching with 9.5% HF resulted in a significant higher bond strength than sandblasting, and the three subgroups in each group achieved similar bond strength between resin and lithium disilicate glass-ceramic. After aging, the bond strength decreased and the proportion of adhesive failure in each group increased. Conclusions Acid etching yielded higher bond strength between resin and lithium disilicate than sandblasting; self-adhesive resin cement can achieve the desired bond strength and bond durability for bonding lithium disilicate without conditioning with silane.

Key words: Keywords: lithium disilicate, surface treatment, resin cement, bonding, aging

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Effects of self-adhesive resin cements and two different surface treatments on resin bonding of lithium disilicate glass-ceramic

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