Self-assembled nano-layering at the adhesive interface

Y. Yoshida, Kumiko Yoshihara, Noriyuki Nagaoka, Satoshi Hayakawa, Yasuhiro Torii, Tatsuyuki Ogawa, A. Osaka, B. Van Meerbeek

Research output: Contribution to journalArticle

173 Citations (Scopus)

Abstract

According to the 'Adhesion-Decalcification' concept, specific functional monomers within dental adhesives can ionically interact with hydroxyapatite (HAp). Such ionic bonding has been demonstrated for 10-methacryloyloxydecyl dihydrogen phosphate (MDP) to manifest in the form of self-assembled 'nano-layering'. However, it remained to be explored if such nano-layering also occurs on tooth tissue when commercial MDP-containing adhesives (Clearfil SE Bond, Kuraray; Scotchbond Universal, 3M ESPE) were applied following common clinical application protocols. We therefore characterized adhesive-dentin interfaces chemically, using x-ray diffraction (XRD) and energy-dispersive x-ray spectroscopy (EDS), and ultrastructurally, using (scanning) transmission electron microscopy (TEM/STEM). Both adhesives revealed nano-layering at the adhesive interface, not only within the hybrid layer but also, particularly for Clearfil SE Bond (Kuraray), extending into the adhesive layer. Since such self-assembled nano-layering of two 10-MDP molecules, joined by stable MDP-Ca salt formation, must make the adhesive interface more resistant to biodegradation, it may well explain the documented favorable clinical longevity of bonds produced by 10-MDP-based adhesives.

Original languageEnglish
Pages (from-to)376-381
Number of pages6
JournalJournal of Dental Research
Volume91
Issue number4
DOIs
Publication statusPublished - Apr 2012

Fingerprint

Adhesives
Scanning Transmission Electron Microscopy
X-Rays
Dental Cements
Dentin
Durapatite
Clinical Protocols
Spectrum Analysis
Tooth
Salts
methacryloyloxydecyl dihydrogen phosphate

Keywords

  • adhesive
  • functional monomer
  • interface
  • nano-layering
  • TEM
  • XRD

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Self-assembled nano-layering at the adhesive interface. / Yoshida, Y.; Yoshihara, Kumiko; Nagaoka, Noriyuki; Hayakawa, Satoshi; Torii, Yasuhiro; Ogawa, Tatsuyuki; Osaka, A.; Meerbeek, B. Van.

In: Journal of Dental Research, Vol. 91, No. 4, 04.2012, p. 376-381.

Research output: Contribution to journalArticle

Yoshida, Y. ; Yoshihara, Kumiko ; Nagaoka, Noriyuki ; Hayakawa, Satoshi ; Torii, Yasuhiro ; Ogawa, Tatsuyuki ; Osaka, A. ; Meerbeek, B. Van. / Self-assembled nano-layering at the adhesive interface. In: Journal of Dental Research. 2012 ; Vol. 91, No. 4. pp. 376-381.
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