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Enhanced Hydrolytic Stability of Dental Composites by Use of Fluoroalkyltrimethoxysilanes

¹ Department of Operative Dentistry and Endodontics and
² Department of Dental Materials, Kanagawa Dental College, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan; and
³ Department of Industrial Chemistry, Faculty of Engineering, Science University of Tokyo, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan;

View larger version (51K): [in a new window]   Figure 1. Tensile strengths of the experimental composites and the commercial composite (PCA). The tensile strength of the composites containing a filler modified with 1F/3-MPS or 4F/3-MPS showed no significant decrease after 1800 days' water storage or thermal stress (p < 0.05).

View larger version (19K): [in a new window]   Figure 2. Water sorption of the experimental composites and the commercial composite (PCA) during the 90-day storage period (according to ADA specification No. 27). There was no significant difference in water absorption between the 3-MPS composite and various silane-mixture composites (p < 0.05).

View larger version (14K): [in a new window]   Figure 3. Contact angles of the resin monomers to silanized glass plates. The minimum contact angle of the glass surface treated with 1F/3-MPS or 4F/3-MPS was observed at a concentration of 20 wt%.