REFRACTIVE-INDEX-ADJUSTABLE FILLERS FOR VISIBLE-LIGHT-CURED DENTAL RESIN COMPOSITES - PREPARATION OF TIO2-SIO2 GLASS POWDER BY THE SOL-GEL PROCESS
REFRACTIVE-INDEX-ADJUSTABLE FILLERS FOR VISIBLE-LIGHT-CURED DENTAL RESIN COMPOSITES - PREPARATION OF TIO2-SIO2 GLASS POWDER BY THE SOL-GEL PROCESS
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DOI：
10.1177/00220345910700050401
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发表时间：
1991-05-01
影响因子：
7.6
通讯作者：
YAMAKI, M
中科院分区：
文献类型：
--
作者：
SUZUKI, H;TAIRA, M;YAMAKI, M
本文报道了一种新型的牙科可见光固化树脂填料，其折射率可根据树脂相的折射率进行调节。 通过将由Ti[OCH（CH 3）2]4和Si（OC 2 H5）4的混合物制成的研磨凝胶加热至1000 ℃来形成这些含有至多20重量%的TiO 2的SiO 2玻璃粉末。 随着TiO 2含量的增加，粉体的折射率呈线性增加，而467 nm处的透光率呈线性下降。 实验配制的VL固化树脂复合材料，由（TEGDMA和Bis-GMA）单体混合物和TiO 2-SiO 2玻璃填料组成，当填料的折射率与单体混合物的折射率相匹配时，具有更大的透射率，导致在用VL照射时更大程度的单体转化。
New fillers have been prepared for visible-light-cured (VL) dental resin composites with the refractive index adjustable to that of the resin phase. These SiO2 glass powders containing TiO2 up to 20 wt% were formed by heating to 1000-degrees-C ground gels made from a mixture of Ti[OCH(CH3)2]4 and Si(OC2H5)4. With increasing TiO2 content, the refractive index of the prepared powder increased linearly, while the optical transmittance at 467 nm decreased linearly. The experimentally formulated VL-cured resin composites, consisting of (TEGDMA and Bis-GMA) monomer mixture and TiO2-SiO2 glass filler, had greater transmittance when the refractive index of the filler matched that of the monomer mixture, resulting in a greater degree of monomer conversion upon irradiation with VL.