| 摘要 |
PURPOSE:To provide a dental filler inhibiting the growth of plaque-forming bacteria in oral cavities to control the adhesion of the bacteria by adding the fine particles of rutile type titanium dioxide to a filling resin. CONSTITUTION:The fine particles (the smaller the particle sizes are, the more preferable the particles are) of rutile type titanium dioxide are added to a BIS-GMA or cyanoacrylate filling resin prepared by reacting bisphenol A with glycidyl methacrylate in a ratio of 1-15mg per 250mg of the filling resin. The rutile type titanium dioxide has the quality of a semiconductor and inhibits the growth of plaque-forming bacteria and the bacteria relating to dental caries due to a photoctalyst reaction thereof. |
