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首页> 外文会议>Mechatronic Systems and Materials II(MSM 2007) >The Influence of Selected Powder Fillers on the Tribological Properties of Composite Materials for Dental Fillings
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The Influence of Selected Powder Fillers on the Tribological Properties of Composite Materials for Dental Fillings

机译：所选粉末填充剂对牙科填充复合材料摩擦学性能的影响

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摘要

The aim of this study was to determine the influence of powder fillers on the tribological properties of composite materials used for dental fillings. The investigated composites contain a fluoridated filler (based on Ba-Sr-Al-P-Na-silicate glass fillers) as a fluoride source as well as different powder fillers (friction modifiers) e.g. silicon nitride (Si_3N_4), boron nitride (BN). polyethylene (PE), polytetrafluoroethylene (PTFE). Composite disks were photo-cured and tested for wear against harder stainless-steel counterface. Wear tests were carried out by means of special tribotester in the presence of phosphate buffer as a lubricant. Influence of the load and filler contents on the friction coefficients and wear were estimated. The interaction between the filler particles and organic matrix and its influence on the tribological behavior of prepared specimens were observed. Organic powder fillers (PE, PTFE) reduced the friction coefficient and the wear of tested composite materials for dental fillings. Inorganic friction modifiers (Si_3N_4, BN) did not exhibit this effect.
机译：这项研究的目的是确定粉末填充剂对牙科填充用复合材料的摩擦学性能的影响。所研究的复合材料包含作为氟源的氟化填料（基于Ba-Sr-Al-P-Na-硅酸盐玻璃填料）以及不同的粉末填料（摩擦改性剂），例如。氮化硅（Si_3N_4），氮化硼（BN）。聚乙烯（PE），聚四氟乙烯（PTFE）。对复合盘进行光固化，并测试其在较硬的不锈钢表面上的磨损。在磷酸盐缓冲液作为润滑剂的存在下，通过特殊的三硼酸酯进行了磨损测试。估计了载荷和填料含量对摩擦系数和磨损的影响。观察到填料颗粒与有机基体之间的相互作用及其对制备试样的摩擦学性能的影响。有机粉末填充剂（PE，PTFE）可降低摩擦系数和经测试的用于牙科填充物的复合材料的磨损。无机摩擦改进剂（Si_3N_4，BN）没有表现出这种作用。

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