Studies on syntheses and functional analysis of dental glass-ceramics prepared by the sol-gel process

本研究调查了Sol-gel工艺的可行性，以进入新的硅基牙科生物材料，并取得了后续的实验结果。（1）50 wt % SiO-D22 - 20 wt %P-D22-D25-D2- 30 wt %CaO （SPC） was considered as new bio-degradable implant powder materials。当温度低于900℃时，-OH功能组保留在玻璃矩阵中，α-TCP晶体被预先配置在其中，对于新的生物材料来说可能是有用的，因为它是用于组织工程的碎片。（2）50 wt % SiO-D22 - 20 wt %Al-D22-D2O-D23-D2- 30 wt %CaO （SAC） was proved to be chemically reactive with polyacrylic acids， indicating that SAC could be used as cement powder。当低于800℃时，-OH功能组保留，可能允许用功能有机物质进行修饰。（3）商业单分散的软硅粉末（EQ）由固体凝胶工艺成功地用γ-MPTS硅烷制备。Silane治疗后，EQ改变的光学特性。两种差异的反射性和反射性指数都减少了。（4） Sol-gel prepared silica glass-ceramic powders might be useful for future biomedical applications such as DNA-forming base and coating on DNA chipps。

This study investigated the feasibility of the sol-gel process into new silica-based dental biomaterials, and the following experimental results were obtained.(1) 50wt%SiOィイD22ィエD2-20wt%PィイD22ィエD2OィイD25ィエD2-30wt%CaO (SPC) was considered as new bio-degradable implant powder materials. When heated less than 900℃, -OH functional groups remained and α-TCP crystals precipitated in the glass-matrix, which might be useful for new bio-materials such as scaffold for tissue engineering.(2) 50wt%SiOィイD22ィエD2-20wt%AlィイD22ィエD2OィイD23ィエD2-30wt%CaO (SAC) was proved to be chemically reactive with polyacrylic acids, indicating that SAC could be used as cement powder. When heated less than 800℃, -OH functional groups remained and might allow modification with functional organic substance.(3) Commercial mono-dispersed spherical silica powders (EQ) prepared by the sol-gel process were successfully silanated with γ-MPTS. After silane treatment, optical properties of EQ altered. Both diffuse reflectance and refractive index decreased.(4) Sol-gel prepared silica glass-ceramic powders might be useful for future biomedical applications such as DNA-forming base and coating on DNA chipps.