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Two-component adhesive for bonding artificial teeth to a denture base

A technology for denture bases and artificial teeth, applied in the direction of non-polymer organic compound adhesives, adhesive types, ester copolymer adhesives, etc.

Active Publication Date: 2015-10-28
VITA ZAHNFABRIK H RAUTER GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pretreatment with a primer is disadvantageous as it requires additional operations

Method used

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  • Two-component adhesive for bonding artificial teeth to a denture base
  • Two-component adhesive for bonding artificial teeth to a denture base
  • Two-component adhesive for bonding artificial teeth to a denture base

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030]50 g of a copolymer of methyl methacrylate (Degacryl® MW 332 from Evonik, Germany) was dissolved in 100 g of methacrylic acid supplied by Lehmann & Voss & Co. A mixture of methyl ester and 10 g of triethylene glycol dimethacrylate (TEGDMA) (Luvomaxx® TEDMA). Then, 2 g of benzoyl peroxide was dissolved in 80 g of methyl methacrylate, and 120 g of the first solution was added to the solution to obtain component A.

[0031] Component B was prepared as follows: 3 grams of N,N-dimethyl-p-toluidine were dissolved in 75 grams of methyl methacrylate.

example 2

[0033] Component A as prepared in Example 1 was mixed with the mentioned B component in a ratio of 2:1 at room temperature. For example, an applicator brush is used to apply the mixture to areas of the denture base in contact with the base surface of the tooth, and / or the base surface of the artificial tooth. The denture thus prepared is placed in the corresponding alveolus of the base. The prostheses thus prepared were stored overnight in an annealing oven at 37 °C for adhesive curing.

[0034] Using test samples prepared in the same way ( figure 1 and figure 2 ), fracture test according to standard DIN 13998. The prosthesis only shows areas of cohesive fracture in the tooth and / or base ( image 3 and Figure 4 ).

[0035] List of reference signs:

[0036] 1. Test specimens for fracture tests according to DIN 13998

[0037] 2. Denture bonded to test specimen

[0038] 3. Denture residue after adhesive failure

[0039] 4. Adhesive residue

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PUM

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Abstract

A mixture containing at least one first component A and at least one second component B, characterized in that said at least one first component A comprises a methyl methacrylate, a copolymer of methyl methacrylate dissolved in excess methyl methacrylate, optionally comprising, additionally dissolved therein, atleast one polyfunctional (meth)acrylate, especially ethylene glycol dimethacrylate, butanediol dimethacrylate, hexanediol dimethacrylate, triethylene glycol dimethacrylate (TEGDMA), tetraethylene glycol dimethacrylate, diurethane dimeth- acrylate, bis(hydroxymethacryloyloxypropoxy)phenylpropane (bis-GMA), polyethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, ditrimethylol- propane tetraacrylate;and a peroxide-based free-radical initiator, wherein said copolymer of methyl methacrylate is present in an amount of 30-50 parts by weight dissolved in a solution of 65-85 parts by weight of monomeric methyl methacrylate and 3-15 parts by weight of the polyfunctional (meth)acrylate, especially the triethylene glycol dimethacrylate (TEGDMA), mixed with a solution of 0.5 to 3 parts by weight of said peroxide-based free-radical initiator, especially dibenzoyl peroxide, in 70-90 parts by weight of monomeric methyl methacrylate, and said at least one second component B comprises methyl methacrylate and a tertiary amine.

Description

technical field [0001] The invention relates to a mixture comprising at least one first component A and at least one second component B, a dental prosthesis with a denture base and artificial teeth erected therein, and the mixture according to the invention use. Background technique [0002] The bonds between the finished denture base and the teeth have previously been prepared by pre-treating the adherend surface with a primer. The primer partially dissolves the surface of the components to be bonded and enables improved penetration of the adhesive into the topmost substrate layer, thus achieving a higher bond strength of the adhesive. Pretreatment with a primer is disadvantageous because it requires additional operations. For some or all prostheses, especially in modern mechanical production processes, this extra manipulation is counterproductive. Therefore, there is a need to provide a bonding agent capable of permanently bonding an artificial tooth to a denture base w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C09J4/06C09J133/00C08L33/00
CPCC09J4/06A61K6/0023C08F220/14C08F2222/1013C09J133/12A61K6/30A61K6/887C08F222/102C08L33/10A61C13/10
Inventor 斯特凡·埃希特纳
Owner VITA ZAHNFABRIK H RAUTER GMBH & CO KG
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