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. 2009 May;88(5):443-8.
doi: 10.1177/0022034509337146.

Degradation-stage effect of self-etching primer on dentin bond durability

M Aida  1 , M Odaki, K Fujita, T Kitagawa, I Teshima, K Suzuki, N Nishiyama
Affiliations

Degradation-stage effect of self-etching primer on dentin bond durability

M Aida et al. J Dent Res. 2009 May.

Abstract

It is well-known that self-etching primers can be altered. However, the effects from altered primers on the dentin bond durability have yet to be thoroughly identified. In this study, we examined the effects from 5 altered Liquid A primers in different stages of degradation-where 2-hydroxyethylmethacrylate (HEMA) and 10-methacryloyloxydecyl dihydrogen phosphate (MDP), used in Liquid A primers, were altered by the hydrolysis of the methacryloxy ester portion in the HEMA and MDP-on the hybrid layer's quality and dentin bond durability. The hypothesis was that degradation stages of altered Liquid A primers have no effect on the hybrid layer's quality and on dentin bond durability. Bond strengths, obtained after thermo-cycling, were strongly dependent on the degradation stage of the altered Liquid A primer. Alterations of self-etching primers reduced dentin bond durability and decreased the created hybrid layer's quality.

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