标题：Indentation Hardness and Tribological Wear in Conditions of Sliding Friction of the Surface Layer of Composites Based on Methacrylate Resins with Ceramic Nanofiller
期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2020
卷号：14
期号：2
页码：112-119
DOI：10.12913/22998624/118867
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：The biomaterials, which are the subject of this work, are the dental restorative materials classifed as light curedpolymer matrix ceramic composites or resin based composites. The dental composite materials are needed forthe repairment of human teeth. Fillings and other dental applications are exposed to the biomechanical loading inthe chewing process. The wear resistance and hardness are important functional properties. Currently, nanofllercomposites play an important role among dental composites. The objective of this paper was to study and analyzethe friction, mechanical and wear properties of the surface of polymer matrix ceramic fled nanocomposites. Threematerial groups were used, one commercial composite Filek Z550 (3M ESPE, USA) and two experimental composites Ex-nano(G) and Ex-flow(G). The microindentation tests were conducted on the Micro Combi Tester device(Anton Paar GmbH, Germany). Rotating sliding ball-on-disc friction tests were performed against an alumina ballon 5 N load at 1 Hz in the bath of artifcial saliva at 37°C. The linear wear and friction coefcients were evaluated.In the light of the obtained results of contact and friction strength tests, it was found that the performance dependson the production technology of the polymer-ceramic composites. The test results indicate that the share of fllernanoparticles the in experimental composites is advantageous due to the tribological wear.
