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Surface modification with alumina blasting and H 2 SO 4 – HC l etching for bonding two resin‐composite veneers to titanium

2013; Wiley; Volume: 122; Issue: 1 Linguagem: Inglês

10.1111/eos.12109

1600-0722

Yohsuke Taira, Takafumi Egoshi, Kohji Kamada, Takashi Sawase,

Dental Implant Techniques and Outcomes

The purpose of this study was to investigate the effect of an experimental surface treatment with alumina blasting and acid etching on the bond strengths between each of two resin composites and commercially pure titanium. The titanium surface was blasted with alumina and then etched with 45wt% H 2 SO 4 and 15wt% HC l (H 2 SO 4 – HC l). A light‐ and heat‐curing resin composite (Estenia) and a light‐curing resin composite (Ceramage) were used with adjunctive metal primers. Veneered specimens were subjected to thermal cycling between 4 and 60°C for 50,000 cycles, and the shear bond strengths were determined. The highest bond strengths were obtained for B lasting/ H 2 SO 4 ‐ HC l/ E stenia (30.2 ± 4.5 MP a) and B lasting/ E tching/ C eramage (26.0 ± 4.5 MP a), the values of which were not statistically different, followed by B lasting/ N o etching/ E stenia (20.4 ± 2.4 MP a) and B lasting/ N o etching/ C eramage (0.8 ± 0.3 MP a). Scanning electron microscopy observations revealed that alumina blasting and H 2 SO 4 – HC l etching creates a number of micro‐ and nanoscale cavities on the titanium surface, which contribute to adhesive bonding.