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

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

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)443-448
Number of pages6
JournalJournal of Dental Research
Issue number5
Publication statusPublished - 1 May 2009


  • Aging
  • Core resin
  • Degradation
  • Dentin bond durability
  • Self-etching primer


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