Analysis of chemical interaction of 4-MET with hydroxyapatite using XPS

Kouji Nagakane, Yasuhiro Yoshida, Isao Hirata, Ryuichi Fukuda, Youichi Nakayama, Kenichi Shirai, Tatsuyuki Ogawa, Kazuomi Suzuki, Bart Van Meerbeek, Masayuki Okazaki

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Each dental adhesive contains a specific functional monomer that determines its actual adhesive performance to tooth tissue. 4-methacryloxyethyl trimellitic acid (4-MET) is well-known as one of the functional monomers mostly available and consequently widely used in commercial adhesives. We therefore characterized the chemical interaction of 4-MET with hydroxyapatite (HAp) using X-ray Photoelectron Spectroscopy (XPS). XPS revealed that the peak representing -COO- of 4-MET shifted to a lower binding energy, when 4-MET was adsorbed onto HAp. Deconvolution of this shifted peak disclosed two components with a peak representing unreacted carboxyl groups and ester groups, and a peak suggesting chemical bonding of other carboxyl groups to Ca of HAp. XPS spectra of HAp treated with 4-MET also disclosed the surface to be enriched in calcium and decreased in phosphorus, indicating that phosphorus was extracted at a relatively higher rate than calcium. It can thus be concluded that true chemical bonding of 4-MET with calcium present in HAp occurred, as it was proven using XPS.

Original languageEnglish
Pages (from-to)645-649
Number of pages5
JournalDental Materials Journal
Volume25
Issue number4
Publication statusPublished - Dec 2006

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Photoelectron Spectroscopy
Durapatite
Hydroxyapatite
X ray photoelectron spectroscopy
Calcium
Adhesives
Phosphorus
Monomers
Dental Cements
Deconvolution
Binding energy
Esters
Tooth
Tissue
Acids

Keywords

  • 4-MET
  • Adhesion
  • XPS

ASJC Scopus subject areas

  • Dentistry(all)
  • Biomaterials

Cite this

Nagakane, K., Yoshida, Y., Hirata, I., Fukuda, R., Nakayama, Y., Shirai, K., ... Okazaki, M. (2006). Analysis of chemical interaction of 4-MET with hydroxyapatite using XPS. Dental Materials Journal, 25(4), 645-649.

Analysis of chemical interaction of 4-MET with hydroxyapatite using XPS. / Nagakane, Kouji; Yoshida, Yasuhiro; Hirata, Isao; Fukuda, Ryuichi; Nakayama, Youichi; Shirai, Kenichi; Ogawa, Tatsuyuki; Suzuki, Kazuomi; Van Meerbeek, Bart; Okazaki, Masayuki.

In: Dental Materials Journal, Vol. 25, No. 4, 12.2006, p. 645-649.

Research output: Contribution to journalArticle

Nagakane, K, Yoshida, Y, Hirata, I, Fukuda, R, Nakayama, Y, Shirai, K, Ogawa, T, Suzuki, K, Van Meerbeek, B & Okazaki, M 2006, 'Analysis of chemical interaction of 4-MET with hydroxyapatite using XPS', Dental Materials Journal, vol. 25, no. 4, pp. 645-649.
Nagakane K, Yoshida Y, Hirata I, Fukuda R, Nakayama Y, Shirai K et al. Analysis of chemical interaction of 4-MET with hydroxyapatite using XPS. Dental Materials Journal. 2006 Dec;25(4):645-649.
Nagakane, Kouji ; Yoshida, Yasuhiro ; Hirata, Isao ; Fukuda, Ryuichi ; Nakayama, Youichi ; Shirai, Kenichi ; Ogawa, Tatsuyuki ; Suzuki, Kazuomi ; Van Meerbeek, Bart ; Okazaki, Masayuki. / Analysis of chemical interaction of 4-MET with hydroxyapatite using XPS. In: Dental Materials Journal. 2006 ; Vol. 25, No. 4. pp. 645-649.
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