نتایج جستجو برای: nanofilled composite
تعداد نتایج: 121674 فیلتر نتایج به سال:
It is well accepted that adding nanoparticles (NPs) to polymer melts can result in significant property improvements. Here we focus on the causes of mechanical reinforcement and present rheological measurements on favourably interacting mixtures of spherical silica NPs and poly(2-vinylpyridine), complemented by several dynamic and structural probes. While the system dynamics are polymer-like wi...
Changes in the organic matrix of composite resins have been proposed to improve their surface properties. However, polishing systems may perform differently different materials. This study compared effect on roughness four containing resin monomers: Admira Fusion (nanohybrid pure ormocer), Aura Bulkfill Bis-GMA, UDMA), Charisma Diamond TCD-DI-HEA) and Vittra APS (nanofilled UDMA). Cylinders (N ...
Review of Project Objectives: Our overall objective for the three-year duration of this project is to design an adaptive, learning, simulation technique for polymers covering the range from atoms to coarsegrained chains, and apply the technique to the description of nanofilled polymers. Accomplishing this objective requires four activities, with the first two corresponding to the first two proj...
PURPOSE The purpose of this study was to investigate the effect of different plasticizing aging solutions on wear resistance and hardness of selected universal resin-based dental composites. METHODS Three light cured (one nanofilled, two microhybride) and one hybride chemical cured composites were aged at 37 °C for 48 h in distillated water, ethyl alcohol solution or Listerine mouthwash. Afte...
UNLABELLED The aim of this study is to investigate different instruments for finishing composite restorations, as well as examining different surfaces and interfaces of the same restoration. The null hypothesis is represented by the fact that there are no significant differences on roughness of composite restorations finishing between tungsten carbide and diamond burs, furthermore the null hypo...
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