Powder for powder blasting, powder mixture and method of use for the treatment of tooth surfaces

Abstract

A powder and a powder mixture, respectively, preferably for powder blasting with a powder-jet device, said device mixing the powder or the powder mixture with air to a powder/air mixture, wherein said powder and powder mixture is an alditol or contains such alditol. Preferably, mannitol and/or erythritol are used; because of the anti-cariogenic effect, xylitol is also well suitable for the cleaning of tooth surfaces, especially of less strongly mineralized tooth surfaces like dentine.

Description

BACKGROUND[0001]1. Field[0002]The disclosure relates to a powder for powder blasting with a powder-jet device or a powder mixture for powder blasting with a powder-jet device as described, for example, in EP 1 159 929. Furthermore, the disclosure relates to the use of such a powder and powder mixture, respectively, for the preparation of an agent or material for the powder-jet treatment, especially the powder-jet cleaning of tooth surfaces, preferably tooth root surfaces and dentine.[0003]2. Related Art[0004]FIG. 1 shows a dental abrasive spraying device disclosed in EP 1 159 929, incorporated by reference. It can be used not only with conventional tap water from a water supply (12), but also with other fluids. A dental abrasive spraying device has a hand-piece (4) nozzle for spraying a dental powder contained in a reservoir (1), together with a carrier gas and a fluid aiding mixing of the powder with the carrier. There are two separate pressure feeds (3,6). Pressurized air comes fr...

AI Technical Summary

Benefits of technology

[0025]Erythritol has two CH(OH) groups and is equally used a sugar substitute (E 968). It is solid at room temperature, has a density of 1.45 g/cm3 and is water-soluble. Like mannitol, erythritol has the aforesaid positive properties and has, in comparison to other alditols like sorbitol, maltitol, lactite and isomalt, the advantage of a very high digestive tolerance. The abrasion measurements have surprisingly shown that, despite the somewhat lower density vis-à-vis mannitol, the abrasiveness of erythritol at equal size of the particles has slightly increased. The reason for this is probably the different crystal morphology of erythritol, leading to the formation of a sharp-edged surface of the particles. Erythritol is very advantageous because, in the mixing chambers of conventional powder-jet devices, it can reliably be swirled to low particle sizes of app. 12 μm. Although the effectiveness during the c

Problems solved by technology

These powders, however, have the disadvantage that, due to one or several grinding and sieving steps, the preparation or manufacturing thereof is expensive and laborious.

This can only be ensured when the powder is uniformly stirred by the airstream and when the pourability, for example, is restricted by the formation of densified areas.

Smaller particles tend more to form such densified area than larger particles which, due to their mostly larger mass, are often less suitable for being stirred by the airstream.

Furthermore, a powder for powder blasting should have a

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