Bond strength of two adhesive systems with self-etching primer

概要

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Self-etching primers that treat both enamel and dentin have recently been developed. We evaluated the in vitro bond strength of two self-etching primer adhesive systems that bond to enamel and dentin : UniFil Bond/UniFil F (GC Inc., Tokyo, Japan) and Fluorobond/Beautifil (Shofu Inc., Kyoto, Japan). The facial surfaces of bovine incisors were ground with wet SiC paper up to 600 grit to prepare flat bonding surfaces on either enamel or dentin. The adhesive systems were applied according to the manufacturer's instructions, with an additional 15 seconds of phosphoric acid etching on the enamel. The tensile bond strengths were determined at a cross head speed of 0.3 mm/min after immersion in water at 37℃ for one day, and thermocycling between 5℃ and 55℃ in water 5,000 times. The bond strength to dentin was satisfactory for both systems. However, although the bond strength to enamel was not durable, it was improved with phosphoric acid etching. These results suggest that enamel etching with phosphoric acid is recommended when using these self-etching primer adhesive systems.
大阪歯科学会の論文