A series of fluorinated dental resin composites were prepared with two kinds of SiO₂ particles. Bis-GMA (bisphenol A-glycerolate dimethacrylate)/4-TF-PQEA (fluorinated acrylate monomer)/TEGDMA (triethylene glycol dimethacrylate) (40/30/30, wt/wt/wt) was introduced as resin matrix. SiO₂ nanopartices (30 nm) and SiO₂ microparticles (0.3 µm) were silanized with 3-methacryloxypropyl trimethoxysilane (γ-MPS) and used as fillers. After mixing the resin matrix with 0%, 10%, 20%, 30% SiO₂ nanopartices and 0%, 10%, 20%, 30%, 40%, 50% SiO₂ microparticles, respectively, the fluorinated resin composites were obtained. Properties including double bond conversion (DC), polymerization shrinkage (PS), water sorption (W_p), water solubility (W_y), mechanical properties and cytotoxicity were investigated in comparison with those of neat resin system. The results showed that, filler particles could improve the overall performance of resin composites, particularly in improving mechanical properties and reducing PS of composites along with the addition of filler loading. Compared to resin composites containing SiO₂ microparticles, SiO₂ nanoparticles resin composites had higher DC, higher mechanical properties, lower PS and lower W_p under the same filler content. Especially, 50% SiO₂ microparticles reinforced resins exhibited the best flexural strength (104.04 ± 7.40 MPa), flexural modulus (5.62 ± 0.16 GPa), vickers microhardness (37.34 ± 1.13 HV), compressive strength (301.54 ± 5.66 MPa) and the lowest polymerization (3.42 ± 0.22%).

用两种SiO ₂颗粒制备了一系列的含氟牙科树脂复合材料。将Bis-GMA（双酚A-甘油二甲基丙烯酸酯）/ 4-TF-PQEA（氟化丙烯酸酯单体）/ TEGDMA（三乙二醇二甲基丙烯酸酯）（40/30/30，wt / wt / wt）引入。将SiO ₂纳米粒子（30nm）和SiO ₂微粒（0.3μm）用3-甲基丙烯酰氧基丙基三甲氧基硅烷（γ-MPS）硅烷化并用作填料。将树脂基质分别与0％，10％，20％，30％SiO ₂纳米颗粒和0％，10％，20％，30％，40％，50％SiO ₂微粒混合后，得到氟化树脂复合材料。性质包括双键转化率（DC），聚合收缩率（PS），吸水率（W与纯树脂体系相比，研究了_p），水溶性（W _y），机械性能和细胞毒性。结果表明，填料颗粒可以改善树脂复合材料的整体性能，特别是在提高机械性能和降低复合材料的PS的同时增加填料含量。与包含SiO ₂微粒的树脂复合材料相比，在相同填料含量下，SiO ₂纳米颗粒树脂复合材料具有更高的DC，更高的机械性能，更低的PS和更低的W _p。特别是50％SiO ₂ 微粒增强树脂表现出最佳的弯曲强度（104.04±7.40 MPa），弯曲模量（5.62±0.16 GPa），维氏显微硬度（37.34±1.13 HV），抗压强度（301.54±5.66 MPa）和最低的聚合度（3.42±0.22％） ）。