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Adhesive cream for dental prostheses

a technology of dental prosthesis and adhesive cream, which is applied in the direction of dental prosthesis, dental preparation, impression cap, etc., can solve the problems of increased probability that paraffinic components will be absorbed directly by the body, inability to exclude negative effects in adults, and uncertainty as to whether paraffin can penetrate the skin

Inactive Publication Date: 2012-11-22
BOGAERT JEAN PIERRE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention relates to a fixing cream composition that improves adhesion properties and is harmless to the human body. The composition contains a plant oil or fat, a water-soluble polymer, an alkyl vinyl ether / maleic acid anhydride copolymer, and optionally additional substances such as silicon dioxide, phosphoglycerides, trihydroxystearin, and polyethylene glycols. The composition does not require the use of zinc compounds to adjust adhesion parameters. The plant oil or fat can be any oil or fat that is not harmful when used in a relatively high amount. The composition can also contain other substances such as silicon dioxide, phosphoglycerides, trihydroxystearin, and polyethylene glycols to further improve the properties of the fixing cream. The composition has good storage stability and does not liquefy. The use of plant oils or fats in the fixing cream composition provides good adhesion properties and the combination of plant oils and fats with silicon dioxide additives provides long-lasting adhesion and stability under adverse environmental conditions."

Problems solved by technology

Consequently, negative effects in adults cannot be excluded.
However, there is uncertainty as to whether the paraffins can penetrate the skin.
In the case of use in fixing creams, however, there is an increased probability that paraffinic components will be absorbed directly by the body via the digestion.
According to U.S. Pat. No. 5,561,177, oils which contain unsaturated fatty acid esters have the disadvantage that they become unstable at high temperatures or after being stored for a given time.
Furthermore, fixing creams which contain such oils are less solid owing to the unsaturated double-bonds present, that is to say, too liquid to be used as a fixing cream.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 2

[0056]

Component% by weightOlive oil 1)31.19Alkyl vinyl ether / maleic acid anhydride32.22copolymerCarboxymethyl cellulose36.38ZnO paste 2)0.16Trihydroxystearin0.03Lecithin0.02Aromatic additive 3)0.001) commercially available,2) the paste consists of 50% by weight of oil (for example, olive oil) and 50% by weight of zinc oxide (ZnO), consequently approximately 0.064% by weight of zinc is added in the form of the ZnO paste,3) the added quantity is below measurement accuracy, in particular below 0.01% by weight.

[0057]The fixing cream according to example 2 has good adhesion strength which lasts at least 12 hours. The fixing cream leaves behind a fresh taste and a good, pleasantly silky sensation in the mouth.

example 3

[0058]

Component% by weightOlive oil 1)36.99Alkyl vinyl ether / maleic acid anhydride37.51copolymerCarboxymethyl cellulose24.91ZnO paste 2)0.09Trihydroxystearin0.45Lecithin0.05Aromatic additive 3)0.001) commercially available,2) the paste consists of 50% by weight of oil (for example, olive oil) and 50% by weight of zinc oxide (ZnO), consequently approximately 0.036% by weight of zinc is added in the form of the ZnO paste,3) the added quantity is below measurement accuracy, in particular below 0.01% by weight.

[0059]The fixing cream according to example 3 has good adhesion strength which lasts at least 12 hours. The fixing cream leaves behind a fresh taste and a good, pleasantly silky sensation in the mouth. This fixing cream further has good long-term stability over months and is consequently storable.

example 4

[0060]

Component% by weightOlive oil 1)38.6Alkyl vinyl ether / maleic acid anhydride33copolymerCarboxymethyl cellulose20Silicon dioxide0.8Polyethylene glycol7Trihydroxystearin0.4Lecithin 2)0.2Aromatic additive 3)—1) commercially available,2) soya lecithin,3) optional.

[0061]The fixing cream according to example 4 has good adhesion strength which lasts at least 12 hours. The fixing cream leaves behind a fresh taste and a good, pleasantly silky sensation in the mouth. This fixing cream further also remains stable under reduced pressure conditions, as exist in aircraft freight compartments and residential areas at high elevations.

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Abstract

Improved composition of a fixing cream containing at least one oil and / or fat, preferably plant oil, such as, for example, an olive oil, at least one water-soluble polymer selected from the group of cellulose derivatives, at least one alkyl vinyl ether / maleic acid anhydride copolymer and, as the additional substances, at least trihydroxystearin.

Description

FIELD OF THE INVENTION[0001]The invention relates to fixing cream compositions according to the preambles of claims 1 and 3.PRIOR ART[0002]Many commercial fixing cream compositions for prosthetic teeth are based on a mixture of refined paraffins, water-soluble cellulose derivative polymers and alkyl vinyl ether / maleic acid anhydride copolymers. Conventionally, mineral oils and mineral fats, in particular Vaseline, are used. Mineral oils and fats generally constitute approximately 40% by weight or more of the fixing cream composition.[0003]Since a fixing cream slowly dissolves in the mouth during use, on the one hand there is the possibility that components of the cream enter the body via the mucous membranes of the mouth and pharynx and, on the other hand, components reach the digestive tract with the saliva and the food and may subsequently become distributed throughout the body. The basic components of Vaseline and mineral oil are not completely harmless according to the most rece...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K6/00C08K5/11C08K3/22
CPCA61K6/0026A61K6/0023C08L1/08C08L35/08C08L71/02A61K6/35A61K6/30
Inventor BOGAERT, JEAN PIERRE
Owner BOGAERT JEAN PIERRE
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