Expanded perlite toothpaste

Details Expanded perlite toothpaste Expanded perlite toothpaste

1994-09-13

1997-01-28

Rose, Shep K.

Drug, bio-affecting and body treating compositions

Dentifrices

A61K 716

Patent

active

055975534

DESCRIPTION:

BRIEF SUMMARY
This application claims the benefit under 35 U.S.C. .sctn..sctn. 120 and 371 of International Application No. PCT/CH 94/00003, filed Jan. 5, 1994 and published as WO94/15577 on Jul. 21, 1994.
The present invention refers to a toothpaste having improved cleaning properties and reduced hard dental substance abrasion effects (REA/RDA values).
Toothpastes are an everyday consumption product and are known as such in a great number of varieties. They generally contain a cleaning body which is dispersed in an aqueous phase, and various additives such as pigments, tensides, thickening agents, preserving agents, caries retarding fluorine compounds, flavouring agents and taste improving agents including sweetening agents and salts, as well as colouring agents. These additives shall establish a mouth hygiene and secure the acceptance of the toothpaste, especially by children.
The cleaning of the teeth is to be achieved by the cleaning body which should mechanically remove soiling matter during rubbing with the toothbrush, on one hand, but should not scratch the hard dental substance which is sensitive to scratching, on the other hand. Until now, it has been tried to solve this problem by incorporating hard minerals into the toothpaste, but they were used in a very finely divided form in order to avoid the formation of scratches in the hard dental substance.
The literature describes as cleaning bodies which have been used until now, for example and particularly the following finely divided substances, but the following listing is not to be intended as being complete and will only show that the problem of the correct choice of a cleaning body in toothpastes can by no means be regarded as solved: calcium carbonate, precipitated lime, whiting, pumice stone, calcium and magnesium phosphates, magnesium carbonate, barium carbonate, glass powder, zeolites, coral limestone, talcum, kaolin, bone substances, siliceous earth (kieselguhr), aluminium oxide, silicon dioxide, powdered synthetic materials, etc., in all possible variations. A review thereof is given in the Belgian BE-A-406,912 which further suggest to use, as a cleaning body, substances having a hardness which is not greater than that of the dental enamel, especially having a Mohs hardness between 2 and 3. Mica, asbestos and other substances are cited as examples which have no sharp edges in powder form but plane surfaces.
But this suggestion could not be satisfactory either since relatively soft cleaning bodies do not display the necessary cleaning effect during toothbrushing which should last at least about 5 minutes but which is not carried out for more than 1 to 2 minutes a day in an intensive manner.
It was an object of the present invention to develop a new toothpaste which now achieves a sufficient cleaning action in better protecting the hard dental substances even during relatively short treating times. The toothpaste of the invention is defined in the first independent claim whereas special embodiments thereof are the subject of dependent claims.
It has now surprisingly been found that a rock which is present in the form of sharp-edged particles which disintegrate when subjected to mechanical stress under the conditions of toothbrushing into still smaller, also sharp-edged particles, is very well suited as a cleaning body in the toothpaste. The originally present, relatively coarse particles having a size of the order of about 1 to 150 .mu.m, the major portion being of about 20 .mu.m, perform a very short-lasting but intensive cleaning action and are the immediately comminuted into still finer particles which then perform a desired, mild polishing action down to a finest polishing. In this way, a so-called "intelligently dynamical" cleaning and polishing action is obtained, and after the end of the toothbrushing, the surface of the teeth is smoothened such that the renewed deposit of residues on the teeth is impeded. A cleaning and polishing body having these properties and which is well suited is perlite, a rock which will be discussed further below.
Toothp

REFERENCES:
patent: 2059396 (1936-11-01), Ripert
patent: 3228845 (1966-01-01), Najjar
patent: 3985668 (1976-10-01), Hartman
patent: 4051055 (1977-09-01), Trinh et al.
patent: 4051056 (1977-09-01), Hartmann
patent: 4526701 (1985-07-01), Rubin
patent: 5124143 (1992-06-01), Muhlemann et al.
patent: 5266304 (1993-11-01), Baffelli et al.

Affiliated with

Also associated with

Rating

Expanded perlite toothpaste does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Expanded perlite toothpaste, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Expanded perlite toothpaste will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-940032