Synthese and application of highly efficient surface modifier bonded to dental material and tooth surface.

本课题的研究目的是：1)评价表面改性剂（1H,1H,2H，2H-苯基氟十二烷基）三甲氧基硅烷（10F2S-3M）的防染色效果；2)提高聚硅氧烷在硅树脂界面的耐水性；3)证明10F2S-3M的抑制斑块形成能力和斑块剥离效果。实验结果如下：1。与未处理的样品相比，经10F2S-3M处理后的样品无论浸泡溶液和保存时间如何，接触角都明显增大。各实验组（表面改性）在茶提取物和油橙中保存后，超声清洗后接触角显著增加，但各实验组（表面改性）保存后接触角均显著降低。与对照组相比，处理组的染色进展明显缓慢。经超声清洗处理的样品表面附着的污渍较易去除，而未处理的样品表面附着的污渍较难去除。表面改性剂对表面硬度和粗糙度无明显影响。与3-MPS处理的样品相比，3-MPS与20-40%的三氟丙基和非氟己基三甲氧基硅烷的混合物处理的树脂复合材料与玻璃表面的拉伸结合强度显着提高。这些混合硅烷具有稳定的粘结强度、优异的防水性能和耐热性。三氟丙基和非氟己基三甲氧基硅烷浓度为20 ~ 40%时，表面自由能达到最大值。改性玻璃表面的头菌数量明显少于原生玻璃。在超声波清洗前10w - 10s，从PTFE和改性玻璃树脂复合材料上分离的细菌数量约为50%，而天然细菌数量约为50%。30%。最终清洗后，PTFE、改性玻璃和复合材料上的细菌残留量小于1%，而原生样品的细菌残留量为35-40%。10F2S-3M显著降低了玻璃和复合材料的表面自由能，达到与PTFE相当的状态。本课题的研究结果表明，用10fs2 - 3m对树脂复合材料进行表面改性对修复体的口内污染具有较高的预防作用，并得出3-MPS与三氟丙基或非氟己基三甲氧基硅烷混合改性二氧化硅表面应能提高硅树脂界面处聚硅氧烷的耐水性。少

The objectives of this research project were 1) to evaluate the effectiveness of the surface modifier (1H,1H,2H,2H-henicosafluorododecyl) trimethoxysilane (10F2S-3M) for the prevention of staining, 2) to improve the water resistance of the polysiloxane at the silica-resin interfaceface and 3) to demonstrate the plaque formation inhibiting ability and the plaque detachment efficacy of 10F2S-3M.The results obtained were as follows :1. Significant large contact angles were displayd on all specimens modified with 10F2S-3M compared with those of untreated ones irrespective of the immersing solutions and the storage periods. The contact angles of all groups were significantly decreased after storage, though remarkable increases were shown after ultrasonic cleansing of the experimental (surface modified) groups stored in tea extract and oil orange. Significant slow progres of staining of the treated groups was apparent compared with that of the control group. Although the stains adhering to t … More he treated specimens were easily removed by ultrasonic cleansing, the stains adhering to the untreated specimens were difficult to remove. Treatment with the surface modifier did not affect the surface hardness and roughness.2. The tensile bond strength of the resin composite to the glass surface treated with a mixture of 3-MPS and 20-40% of trifluoropropyl- and nonafluorohexyl-trimethoxysilane showed significantly high values compared with 3-MPS treated specimen. These mixed silanes demostnrated stable bond strength, excellent waterproofness and thermotensile resistance. Also the maximum value of the surface free energy was displayd at the concentration of 20-40% of trifluoropropyl- and nonafluorohexyl-trimethoxysilane.3. The amount of adhead bacteria on the modified glass surface was significantly less than the native one. The amount of detached bacteria from the PTFE and modified glass and resin composite was approximately 50% at the first 10w 10s ultrasonic cleansing, while the native ones showed approx. 30%. After the final cleansing, the remaining bacteria on the PTFE and modified glass and composite were less than 1%, while the native specimens showed 35-40%. 10F2S-3M significantly decreased the surface free energy of the glass and composite to a comparable state to the PTFE.From the results obtained in this research project, it was suggested that the surface modification of resin composite with 10F2S-3M may have a high preventive effect on contamination of restoration intraorally and was concluded that the modification of silica surface with a mixture of 3-MPS and trifluoropropyl- or nonafluorohexyl-trimethoxysilane should improve the water resistance of the polysiloxane at the silica-resin interface. Less