Three-body-wear resistance of the experimental composites containing filler treated with hydrophobic silane coupling agents

Nihei, Tomotaro; Dabanoglu, Alp; Teranaka, Toshio; Kurata, Shigeaki; Ohashi, Katsura; Kondo, Yukishige; Yoshino, Norio; Hickel, Reinhard; Kunzelmann, Karl-Heinz

doi:10.1016/j.dental.2007.09.001

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Volume 24, Issue 6 , Pages 760-764, June 2008

Three-body-wear resistance of the experimental composites containing filler treated with hydrophobic silane coupling agents

Tomotaro Nihei
- Department of Oral Medicine, Kanagawa Dental College, 82 Inaoaka-cho, Yokosuka, Kanagawa 238-8580, Japan
Alp Dabanoglu
- Division of Restorative Dentistry, Dental School of Ludwig-Maximilians-University, Munich, Germany
Toshio Teranaka
- Department of Oral Medicine, Kanagawa Dental College, 82 Inaoaka-cho, Yokosuka, Kanagawa 238-8580, Japan
- Corresponding author. Tel.: +81 46 822 8854; fax: +81 46 822 8853.
Shigeaki Kurata
- Department of Dental Materials and Devices, Kanagawa Dental College, Kanagawa, Japan
Katsura Ohashi
- Department of Oral Medicine, Kanagawa Dental College, 82 Inaoaka-cho, Yokosuka, Kanagawa 238-8580, Japan
Yukishige Kondo
- Department of Industrial Chemistry, Tokyo University of Science, Tokyo, Japan
Norio Yoshino
- Department of Industrial Chemistry, Tokyo University of Science, Tokyo, Japan
Reinhard Hickel
- Division of Restorative Dentistry, Dental School of Ludwig-Maximilians-University, Munich, Germany
Karl-Heinz Kunzelmann
- Division of Restorative Dentistry, Dental School of Ludwig-Maximilians-University, Munich, Germany

Received 22 June 2007; received in revised form 25 August 2007; accepted 11 September 2007.

Abstract

This paper evaluated the wear resistance of resin composite materials with fillers which were modified with a novel hydrophobic silane coupling agent. The novel silane coupling agent containing hydrophobic phenyl group 3-(3-methoxy-4-methacryloyloxyphenyl)propyltrimethoxysilane (p-MBS) was synthesized. The experimental light-cure hybrid composites containing 85wt% of filler modified with this silane were formulated. Twelve specimens were prepared for the three-body-wear test with the ACTA machine and the collected data were analyzed statistically using a one-way ANOVA and Tukey's multiple comparison test as the post hoc test.

The wear of the composites containing fillers treated with p-MBS was significantly lower compared with the composite materials containing fillers pretreated with 3-methacryloyloxypropyltrimethoxysilane or the commercially composites (AP-X and ELS extra low shrinkage) after a wear test for 200,000 cycles (p<0.05). It is suggested that the resin composites containing fillers modified with the novel hydrophobic silane has high wear resistant, because of the coupling layers treated with this silane had an excellent affinity with the base resin and formed a highly hydrophobic layer on the filler surface.

Keywords: Dental materials, Composite resin, Wear resistance, Silane coupling agent, Three-body-wear