In our new experimental works, the existence of highly filled epoxy-mineral compositions capable of filling and restoring damages of teeth, outside of clinical conditions, is shown. These hypotheses found confirmation in the obtained results of dental repair on volunteers. The tooth powders and epoxy-composites from cheap available components, for use by non-specialists in domestic and non-clinical conditions – were developed and proposed. These results will be very useful for people and communities who, for various reasons (wars, out-cities, voyages, poverty, workload), are left without access to quality dental services.
A practically important parameters of strength and chemical resistance of polyepoxide based on resin-analogue ED-20 with PEPA hardener, filled with microdispersed powders of Si, Zr, Cr, Nb, Ti, Mo carbides, have been experimentally studied in this article. The microstructure of the composites is characterized by a relatively uniform dense distribution of filler agglomerates, which can be seen in the example of compositions with 50 wt% TiC and ZrC. The absence of a significant effect of carbides on the temperature ranges of oxidative degradation of composites was established. Swelling method established that filling can radically increase the resistance of composites to acetone organic solvents. At the same time, resistance in an acidic environment is noticeably reduced (for example, nitric acid). It was found that the introduction of 50 wt% carbide fillers gives a significant increase in the strength and modulus of elasticity during compression of the composites. There is also a decrease in shrinkage and an increase in adhesion to steel (with normal tearing).
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