SU1178445A1 - Composition for making dentures - Google Patents

Abstract

The composition of the DPJ of the manufacture of dental prostheses, containing methyl methacrylate, fluororubber, spshivajut agent, benzoyl peroxide, stabilizer and dye, characterized in that, in order to increase the strength of the prosthesis, it additionally contains a fluorine-containing oligomer, in the following ratio of components, May.%, 1 00-5,10 Fluorine rubber FT or 0.25-3.00 oligomer containing 0.50-3.00 Cross-linking agent Ben0 peroxide, 80-0.90 (P 0.01-0.015 Stabilizer 0.015-0.02 Dye Methyl methacrylate Else lat

Description

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CL 1, 1.1 The invention relates to stomatology, namely to polymeric materials for the manufacture of dental prostheses, and can be used in clinical dentistry to make removable and non-removable dentures, including crowns, pin teeth, tabs, facets and other, as well as medical prostheses (maxillofacial), tires and other devices. The closest to the proposed technical essence is the composition for the manufacture of dental prostheses containing methyl methacrylate, fluororubber, a crosslinking agent, benzoyl peroxide, a stabilizer and a dye p}. However, the known composition due to insufficient strength characteristics does not provide high strength and durability of the prosthesis. The purpose of the invention is to improve the strength of the prosthesis. The goal is achieved by the fact that the composition for the manufacture of dental prostheses containing methyl methacrylate, fluororubber, a crosslinking agent, benzoyl peroxide, a stabilizer and a dye, additionally contains a fluorine-containing oligomer, in the following ratio, wt.%: 1.00 -5.10 Fluorine rubber Fluorine-containing 1.00-3.00 oligomer 2.50-3.00 Cross-linking agent Benzo peroxide, 80-0.90 silt 0.01-0.015 Stabilizer 0.015-0.02 Dye Methyl methacryle Rest Lat For preparation the composition of the carried out suspension copolymerization of 45 m Methyl methacrylate fluoro rubber. molar mass 300 thousand - 1 million and fluorine-containing. oligomers with a mol. mass of 5–15 thousand using a radical mechanism. Methyl methacrylate, 50 fluororubber with a molar mass of 300 thousand, a fluorine-containing oligomer with a molar mass of 15 thousand, a crosslinking agent, benzoyl peroxide, a dye soluble and a stabilizer are loaded into the reactor. Water is used as the dispersion medium. The temperature of the reactor is 90 ° C. At that, the temperature is from 20 to 80 ° C with scr78445 growing eff eff 5 When it dries 2-3 OV of hydrogen sulphide after May 1 volt at the molar desk at sod 2 and flows for 2 sec. 0.7-0.9 degrees / min. At a tempera ture of 80 ° C, a spontaneous cathepla is observed due to the exothermic reaction of the copolymerization. At this temperature, the reaction is held for 10-15 minutes. Then mashlazhdat, filter the priy copolymer and dry at 70-75 C part Example 1. Fluorine rubber Ft orc dehydrate; oligomer Crosslinking agent Benzo peroxide 0.80 0.01 Stabilizer 0,015 Dye 88,065 Methyl methacrylate reamer 2. Sec. of example 1, but the mol. mass of rubber is 1 million, and the mol. mass of fluorourizing oligomer is 5 thousand with the ratio of components,%: Fluorine 5,10 Fluorine-containing oligomer 3,00 Crosslinking agent 3-, 00 Benzoyl peroxide, 90 Stabilizer 0,015 Dye 0,02 Methyl methacrylate 94,175 Example 3. Carried out in the words of Example 1, while preserving .mass fluoro rubber 1 million, and. masses of fluorine-containing oligomers 5 thousand with the following ratio of ponents, wt.%: Fluoro rubber 1.00 Fluorine-containing oligomer 1,00 Cross-linking agent 2.50 Benzoyl peroxide0, 80 Stabilizer0.01 Dye 0,015 Methyl methacrylate94,675 In the manufacture of dental dentures In the manufacture of dental toothpastes The fluoroacrylic copolymer, a holding oligomer (as in Example 1, 3), is combined with a monomer (memethacrylate) to swell for 25-30 minutes. Then received31

A paste-like mass is used to package the gypsum form prepared in metal cuvettes, which are placed in a water bath. The bath is gradually heated for 45 minutes until boiling and kept at the boiling temperature of 45-50 minutes. Then the cuvettes are gradually cooled, the finished denture is opened and removed.

784454

Properties of materials obtained by composition in examples 1, 2, as well as the prototype are shown in the table.

Studies show that 5 the proposed composition has sufficiently high strength indicators and will be used in dental clinics for the manufacture of various types of dental and 10 maxillofacial prostheses. ;

Note: 6 Е fp i-f bending strength under static loading, specific impact viscosity -, modulus of elasticity under tension; elongation at break = bending angle of the specimen at the time of destruction during static bending. 9.81-10 Pa.

Claims (2)

COMPOSITION FOR MANUFACTURE OF DENTAL PROSTHESES, containing methyl methacrylate, fluororubber, a crosslinking agent, benzoyl peroxide, stabilizer and dye, characterized in that, in order to increase the strength of the prosthesis, it additionally contains a fluorine-containing oligomer, in the following ratio, wt.%: Fluororubber FT containing oligomer Crosslinking agent Benzoyl peroxide Stabilizer Dye Methyl methacrylate 1.00-3.00 1.00-5.10 2,50-3,00 0.80-0.90 0.01-0.015 0.015-0.02 Rest SU ... 1178445 V78445