Title: Influence of resin cements and ceramic surface conditioning on microtensile bond strength to ceramic
Abstract: Objective To evaluate the microtensile bond strength of 3 resin bonding agents to ceramics submitted to 2 surface conditioning treatments.Methods Sixty 5mm×6mm×8mm ceramic blocks(Empress Ⅱ)were polished and divided into 2 groups:no conditioning group and HF+SIL group(5% hydrofluoric acid etching for 20 seconds and silanization for 1 minute).Ceramic blocks were cemented to the composite resin blocks with 3 resin bonding agents(RelyX Unicem,Variolink or Panavia F).The composite resin-ceramic blocks were stored at 37℃ for 7 days and sectioned to produce 75 beam specimens per group with a 1.0mm2 cross-sectional area.Specimens were thermal cycled(3000 cycles,5℃~55℃)and the microtensile bond strength(uTBS)was tested.Results The surface conditioning factor(HF+SIL)significantly influenced the bonding strength of 3 resin bonding agents to ceramics(Empress II).Among the unconditioned groups,the uTBS of Rely X Unicem was significantly higher than that of Variolink and Panavia F.Among the conditioned groups(HF+SIL),etching and silanization of ceramics yielded statistically higher uTBS for Rely X Unicem and Variolink when compared with Panavia F.Conclusion Etching and silanization treatments appear to be crucial for resin bonding to ceramic,regardless of the resin bonding agents.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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