COMPOSITION OF LIGHT-CURING NANOSTRUCTURAL COMPOSITE MATERIAL FOR ORTHOPEDIC DENTISTRY

FIELD: medicine.SUBSTANCE: invention relates to medicine and can be used in orthopaedic and orthodontic dentistry. Composition of light-curing composite material contains an organic matrix, organo-inorganic filler, initiating system which consists of a polymerization initiator of thermal type of benzoyl peroxide and photo initiators of camphorquinone and dimethyl ketal benzyl, and is presented in the form of one paste with the following ratio of ingredients, %wt: urethane dimethacrylate-15.0÷29.0; elastomer Exothane 26 of firm Esschem - 8.0÷16.0; TGM-3 (triethylene glycol dimethacrylate) - 2.0÷3.8; camphorquinone - 0.005÷0.4; dimethyl ketal benzyl - 0.005÷0.4; benzoyl peroxide - 0.005÷0.4; polymerization activator ethyl-4- dimethyl aminobenzoate - 0.2÷1.8; auxiliary additives - 0.01-÷0.9; organic filler polyurethane CS-400-5.0÷8.0; non-organic filler silicon oxide fine - 10.0÷20.0; organic filler polymethyl methacrylate - the rest. Auxiliary additive can include pigments, and/or UV light absorber and/or antioxidants. Organic matrix consists of urethane dimethacrylate, elastomer and triethylene glycol dimethacrylate. Organo-inorganic filler contains modified by oligomeric mixture polymethyl methacrylate and cluster, consisting of modified oligomeric mixture of polyurethane CS-400 and preliminarily silanized finely divided silicon oxide. At that the oligomer mixture contains urethane dimethacrylate, triethylene glycol dimethacrylate, elastomer, camphorquinone, ethyl-4-dimethyl aminobenzoate.EFFECT: technical result consists in providing of the required level of polymerization during 4 minutes with preservation of good quality of operational characteristics of light-curing composite with reduction of minimum quantity of introduced photo initiator and initiator of thermal type.1 cl, 1 dwg, 5 ex Изобретение относится к области медицины и может быть использовано в ортопедической и ортодонтической стоматологии. Состав светоотверждаемого композиционного материала содержит органическую матрицу, органо-неорганический наполнитель, инициирующую систему, которая состоит из инициатора полимеризации теплового типа бензоила пероксида и фотоинициаторов камфорохинона и диметилкетальбензила, и представлен в виде одной пасты при следующем соотношении ингредиентов, масс.%: уретандиметакрилат - 15,0÷29,0; эластомер Exothane 26 фирмы Esschem - 8,0÷16,0; ТГМ-3 (триэтиленгликольдиметакрилат) - 2,0÷3,8; камфорохинон - 0,005÷0,4; диметилкетальбензил - 0,005÷0,4; перекись бензоила -