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31.
The quality of life was assessed in 36 patients with painful dysfunction of the temporomandibular joint (TMJ) and 73 patients with TMJ dysfunctions suffering from rheumatoid arthritis. A more significant negative time course of the parameters was observed in patients with rheumatoid arthritis and more positive shifts in patients with isolated TMJ dysfunction without rheumatoid arthritis. 相似文献
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Ceramic materials are increasingly used in dentistry, because of their excellent biocompatibility. Zirconia based ceramic is unique among others due to its high flexural strength. This study examined physical and mechanical properties, as well as toxic and sanitary-chemical characteristics of zirconia based ceramics to select optimum compositions, in comply with the relevant requirements for medical consumables, particularly with materials for all-ceramic frameworks. The initial powders were synthesized in the systems ZrO2-Y2O3 (I), ZrO2-Yb2O3 (II), ZrO2-Y2O3-Yb2O3 (III). Four different zirconia based ceramics were investigated. We studied specific surface of powders, phase composition of the samples, relative density and porosity, flexural strength, fracture toughness, microstructure at x10 000 magnification. Toxicological and sanitary-chemical tests were conducted in accordance with ISO10993, GOST 52770-2007, GOST R 51148-98, GN 2.3.3.972-00 etc. 相似文献
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I. M. Lebedenko 《Biomedical engineering》2000,34(6):330-332
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The characteristics of the following domestic alloys of noble metals for fixed and removable dentures are given: alloys for metal-ceramic dentures--"Superpal", "Super KM"; alloys for clasp dental prostheses--"Super LB"; solders--"Becadent" and "Super VP"; alloy for castings and metal-composite constructions "Super TZ" and material for electrochemical gold cover "Super KEMZ". The above alloys open wide perspectives in the field of prosthetic treatment of main dental diseases due to their unique properties--high functional efficacy, longevity and biological inactivity. 相似文献
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Iarantsev DI Vartanov OI Lebedenko IIu Gvetadze RSh Polikarpova AP Grigor'ev AG 《Stomatologii?a》2005,84(1):7-12
There was determined shearing strength of monolit samples of light curing material and samples received by modeling of further layers on surfaces with and without inhibited layer and also tensile strength of layers connected with the help of light curing adhesive. The study was performed on enamel, dentine and cutting edge masses from set of light curing material Esterfill PHOTO for prosthetic purposes. The received results showed that shearing strength between layers of enamel, dentine and cutting edge masses of Esterfill PHOTO varied between 22 and 28 MPa and tensile force divided by the nominal surface area did not depend upon the way of sample modeling. Distraction zone represented half of the cone turn out of substrate. More rigid material chopped in the process of distraction lesser volume off substrate. For prosthetic purposes it was recommended to use the equipment allowing to combine the final photopolymerization of the article with annealing under high temperature conditions or make annealing of the ready article after photopolymerization. 相似文献
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Koviazin VA Stepanova LA Lebedev LA Stavitskiĭ RV Stavitskaia MK Kravchenko MV Lebedenko IM 《Meditsinskaia tekhnika》2004,(2):13-16
Potentialities of analyzing the health condition of human organism and of its separate systems, i.e. digestive, respiratory, cardiovascular, etc., by the peripheral-blood parameters and with the help of the suggested AKS-ENOFIT analytical system are demonstrated in the paper. 相似文献
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