RU2708614C1 - High-adhesion polymer dental composition with high destructive stress at compression - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to dentistry, namely to development of dental materials, and can be used as a filling material for reconstruction and restoration of anatomical tooth shape. High-adhesion polymer dental composition with high destructive stress during compression contains 4-allyl-2-methoxyphenoxy-beta-carboxyethenylphenoxy-cyclotriphosphazenes, bisphenol glycidyl methacrylate, triethylene glycol dimethacrylate, ionol, camphorquinone, 4-ethyldimethylaminobenzoate, aerosil OX-50 (average particle size 40 nm), barium glass filler SCHOTT-8235 (average particle size 0.7 mcm).

EFFECT: increased destructive stress at compression and excess of adhesion value to tooth tissues required by GOST R 56924-2016.

1 cl, 1 tbl, 2 ex

Description

The invention relates to the field of dentistry, namely to the development of dental materials, and can be used as filling material for restoration and restoration of the anatomical shape of the tooth.

It is known that polymer dental compositions containing components with acid groups have good adhesion to tooth tissues due to the reaction of these groups with hydroxyapatite contained in dentin and enamel [Milena Cadenaro, Tatjana Maravic, Allegra Comba, Annalisa Mazzoni, Lidia Fanfoni, Tom Hilton, Jack Ferracane, Lorenzo Breschi. The role of polymerization in adhesive dentistry // Dental materials. 35 (2019) e1-e22; Kireev V.V., Chistyakov E.M., Filatov S.N., Tupikov A.S., Panfilova D.V., Chetverikova A.I. Polymer dental compositions modified with methacrylate carboxyphosphazenes // Journal of Applied Chemistry. 2015.V. 88. No. 5. S. 826-830]. In European patent EP 0150952 B1, an adhesive with phosphoric acid groups was used to increase the adhesion of the dental composition to tooth tissues, and in the patent of the Russian Federation RU No. 2509551 (prototype) a methacrylic derivative of aryloxycyclophosphazene, however, the disadvantage of the compositions obtained in the patents is the low value of the breaking stress at having a very important role in chewing loads. In US Pat. No. 7,090,722 B2, dental compositions with acid groups have high compressive strengths, however, adhesion to dental tissue does not reach the values required by GOST R 56924-2016.

The technical task of the present invention is the development of a polymer dental composition with high destructive stress during compression and with adhesion to tooth tissues in excess of the values required by GOST R 56924-2016.

To solve this problem, a high-adhesion polymer dental composition with an increased compressive stress and including 4-allyl-2-methoxyphenoxy-beta-carboxyethenylphenoxy-cyclotriphosphazenes of the general formula

bisphenol-A-diglycidyl methacrylate, triethylene glycol dimethacrylate, ionol, camphoroquinone, 4-ethyl dimethylaminobenzoate, Aerosil OX-50 (average particle size 40 nm) and barium glass filler SCHOTT-8235 (average particle size 0.7 μm) in quantity (wt.%):

Изобретение иллюстрируется следующими примерами.

The invention is illustrated by the following examples.

Example 1

In a vacuum homogenizer alternately with stirring, the components are introduced in the following amount (g):

4-allyl-2-methoxyphenoxy-beta-carboxyethenylphenoxy-cyclotriphosphazenes 10.0 Bisphenol-A-Diglycidyl Methacrylate 12.6 Triethylene glycol dimethacrylate 8.4 Ionol 0.005 Camphoroquinone 0.125 4-ethyldimethylaminobenzoate 0.12 Aerosil OX-50 (average particle size 40 nm) 2.0 Barium glass filler SCHOTT-8235 (average particle size 0.7 μm) 66.75

The high-adhesive polymer dental composition obtained in the form of a paste with increased breaking stress during compression is placed in a sample preparation mold, irradiated for 40 seconds with a wavelength of 400-500 nm using a light-curing apparatus for dental materials. Cured samples of a high-adhesive polymer dental composition with an increased compressive stress at breakdown are immersed in distilled water and kept in a thermostat at a temperature of 37 ± 2 ° C for 24 hours. At the end of the exposure of the samples under the indicated conditions, they are tested according to the methods of GOST R 56924-2016.

Example 2

In a vacuum homogenizer alternately with stirring, the components are introduced in the following amount (g):

4-allyl-2-methoxyphenoxy-beta-carboxyethenylphenoxy- cyclotriphosphazenes 5,0 Bisphenol-A-Diglycidyl Methacrylate 12.6 Triethylene glycol dimethacrylate 8.4 Ionol 0.005 Camphoroquinone 0.125 4-ethyldimethylaminobenzoate 0.12 Aerosil OX-50 (average particle size 40 nm) 2.0 Barium glass filler SCHOTT-8235 (average particle size 0.7 μm) 71.75

The high-adhesive polymer dental composition obtained in the form of a paste with increased breaking stress during compression is placed in a sample preparation mold, irradiated for 40 seconds with a wavelength of 400-500 nm using a light-curing apparatus for dental materials. Cured samples of a high-adhesive polymer dental composition with an increased compressive stress at breakdown are immersed in distilled water and kept in a thermostat at a temperature of 37 ± 2 ° C for 24 hours. At the end of the exposure of the samples under the indicated conditions, they are tested according to the methods of GOST R 56924-2016.

The test results of the samples of the polymer dental composition with high destructive stress during compression of the claimed composition are presented in table 1.

As can be seen from the table, the developed material exceeds the adhesion to the tooth tissue required by GOST R 56924-2016, and has an increased breaking stress during compression.

Claims (2)

Highly adhesive polymer dental composition with an increased compressive stress, including 4-allyl-2-methoxyphenoxy-beta-carboxyethenyl-phenoxy-cyclotriphosphazenes, bisphenol-A-diglycidylmethacrylate, triethylene glycol dimethacrylate, ionol, camphorinedinolamine-50-size, 5-methylene benzolone, 4-size-4-methylene benzene 40 nm), barium glass filler SCHOTT-8235 (average particle size 0.7 μm) in the amount (wt.%):