Journal of Dentistry
Volume 34, Issue 7 , Pages 436-443, August 2006

The effect of a novel silane blend system on resin bond strength to silica-coated Ti substrate

  • J.P. Matinlinna

      Affiliations

    • NIOM – Nordic Institute of Dental Materials, P.O. Box 70, NO-1305 Haslum, Norway
    • Corresponding Author InformationCorresponding author. Tel.: +358 2 333 8357; fax: +358 2 333 8390.
    web address
    • ,
  • L.V.J. Lassila

      Affiliations

    • Institute of Dentistry, Department of Prosthetic Dentistry and Biomaterials Science, University of Turku, Lemminkäisenkatu 2, FI-20520 Turku, Finland
    • ,
  • P.K. Vallittu

      Affiliations

    • Institute of Dentistry, Department of Prosthetic Dentistry and Biomaterials Science, University of Turku, Lemminkäisenkatu 2, FI-20520 Turku, Finland

Received 3 August 2005; received in revised form 21 September 2005; accepted 23 September 2005.

Abstract 

Objectives

The adhesive performance of 3-acryloyloxypropyltrimethoxysilane and a silane blend consisting of 3-acryloyloxypropyltrimethoxysilane and 1,2-bis(triethoxysilyl)ethane, adhering an experimental dendrimer-based resin to a silica-coated titanium surface, conditioned by CoJet® method, was evaluated in vitro.

Methods

3-Acryloyloxypropyltrimethoxysilane (1.0vol%) and a blend of 3-acryloyloxy-propyltrimethoxysilane and 1,2-bis(triethoxysilyl)ethane (both 1.0vol%) were prepared in acidified 95vol% ethanol. A commercial 3-methcryloyloxypropyltrimethoxysilane (ESPE Sil™) was used as control. The silanes were applied onto tribochemically silica-coated titanium surfaces. Fresh silane solution hydrolysis (activation) was monitored by Fourier transform infrared (FTIR) spectrometry. Experimental dendrimer resin stubs were applied and photo-polymerized on titanium. The specimens were thermocycled (6000 cycles, 5–55°C). Before measuring shear bond strength of the resin to titanium, surface imaging was carried out with a scanning electron microscope (SEM) with elemental analysis applying energy dispersive X-ray analysis (EDXA).

Results

Statistical analysis (ANOVA) showed that the highest shear bond was obtained with 1.0vol% 3-acryloyloxypropyltrimethoxysilane+1.0vol% 1,2-bis(triethoxysilyl)ethane blend (5.2±1.3MPa), and the lowest result with fresh commercial 3-methacryloyloxypropyltrimethoxysilane, ESPE™ Sil (2.1±0.8MPa). 3-Acryloyloxypropyltrimethoxysilane yielded 4.1±1.0MPa. The type of silane affected significantly the shear bond strength (ANOVA, p<0.001). All silanes were activated according to the infrared spectra. The SEM/EDXA analysis revealed an uneven distribution of titanium, silicon, and aluminum on silica-coated Ti surfaces.

Conclusion

Silanization with 3-acryloyloxypropyltrimethoxysilane might offer better bonding of a novel dendrimer resin to silica-coated titanium than using a pre-hydrolyzed 3-methacryloyloxypropyltrimethoxysilane.

Keywords: Silica-coating, Titanium, Silanization, Silane coupling agents

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PII: S0300-5712(05)00182-X

doi:10.1016/j.jdent.2005.09.007

Journal of Dentistry
Volume 34, Issue 7 , Pages 436-443, August 2006

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