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The composites of the epoxypolymer (EP) with the brick powder (BP) are new materials that combine high characteristics with the low price. Herein we d iscuss about the several such compositions and evaluate some physical characteristics for them. Presented data suggest that BP (at the concentration range from 5 to 50 wt%) increases strength characteristics of the epoxypoly mer's co mpression and abrasion, and reduce his shrinkiness. At the same t ime, the BP in 10 wt% concentration leads to the frustration and defectation in co mposite structure. Under the h igh concentrations of the BP (50 wt%) the plastic deformation disappears, the compression strength increases, contraction decreases, and the destruction of template goes through formation of Chernov-Luders Diagonal; but at the same time usage of high concentrations of the BP leads to increase of swelling of the polymer. The obtained results show that particles of brick powder ab le to significantly strengthen and structurize the EP-co mposite, at the same time make it more susceptible for liquid corrosion.

Introduction and Substantiation of the TopicPrevention of dental diseases should become the main direction of development of modern dentistry. Dental Wear and CariesDental wear and caries are not necessarily a harmful acquisition of civilization. Teeth work at the forefront of life in extreme conditions, withstanding colossal changes in temperature, aggressive influences and pressures. In fact, they work in roughly the same conditions as abrasive cutting edges, car tires, shoe soles and other wear&tear parts. In evolution period when the human body was formed by Nature, only two changes of teeth (milk and permanent) were enough -for in prehistoric times a person lived ARTICLE INFO ABSTRACTThe work is compiled from preclinical studies on volunteers, with the assistance of consultants from dental clinics. It is shown that the topic of preventive and preclinical (extra-clinical) dental care has not been developed (despite the progress in practical prosthetic and filling dentistry). a) In the introduction, the rationale for the need for such work is presented, with an emphasis on the natural basis of the processes of self-restoration of teeth. The authors draw broad analogies with self-restoration in technical (construction, road, auto, air), medical (self-medication / prevention of suppuration and small scratches), and other areas. b) Theoretical assumptions and views on the processes of self-restoration of carious, traumatic and other dental lesions are presented. Methods for creating tooth powders from public&cheap components are proposed for use by non-specialists in places unsuitable for traditional treatment & prophylaxis. c) All these assumptions and hypotheses were confirmed in the results of observations as the well-being of patients as with visual information (photo, X-ray images) of the treated groups of affected teeth.d) The conclusions made confirm the possibility of effective prophylaxis and selfrestoration of dental systems by non-operational exposure to special complexes of dental powders, pastes and rinsing systems (in compliance with the correct teeth's exploitation).

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The work is devoted to the study of a new type of composites for the manufacture of special details, parts, tools or adhesive repair in the field. We have developed epoxy compounds that preserve or increase strength and ductility after heating at 200-250oC. That let, if necessary, an effective thermo-disinfection of composite toolsproducts at elevated temperatures. It is believed that conventional epoxy resins are unable to retain their physical and mechanical properties after heating above 200°C. Their feature is in simplicity of making (ordinary filling with available\cheap microfillers) without special qualification of personnel and in any conditions (outside clinics, laboratories and service centers). In this work some of such compositions (with SiC, TiN, SiO 2 -marshalite, cement) are considered. It offers to name such composites of "thermo-harden" or "thermo-plasticized". Bioneutrality, durability and heat-resistance, at 200-300 о С does him a good material for rapid repair and making of the special or failing instruments in the field, travelling, military and other difficult terms.

It is established that the filling with graphenes increases (by 1.3-1.8 times) the strength at normal adhesion to steel. At same time, filling reduces the compressive strength and abrasion resistance and also resistance to aggressive liquids (conc. nitric acid, chloromethylene; mixture acetone-ethylacetate). The most probable reason for this may be the features of the graphene plate structure, prone to deactivation (self-rotation) of particles and therefore sensitive to the technology of hardening. Studies have shown the limited positive effects of graphene as a filler of epoxydes, although its introduction can significantly improve certain practical characteristics (adhesion, thermal and electrical conductivity).

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