Suspension for the treatment of natural hard tissue and method of treatment
OwnerRainer Hahn, Dieter Heermann +1inventors
InventorsRainer Hahn, Dieter Heermann, Peter Brauner
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Abstract
A suspension for the ultrasonic preparation of natural hard tissue contains between 5 and 45 wt. % of hard particles, between 2 and 40 wt. % of at least one polyhydric alcohol and between 0.1 and 10 wt. % of dispersants and thickeners The suspension having this composition is capable of being stored and shipped without the risk of the hard particles settling. It constitutes a pumpable concentrate which, during the actual ultrasonic preparation, is diluted with an appropriate amount of water to give the ready-to-use suspension.
Claims21
A suspension for the treatment of natural hard tissue such as dentine, dental enamel, dental calculus or dental cement, and hard tissue prostheses such as dental or bone prostheses or implants, with abrasive hard particles suspended in water or an aqueous solution, in conjunction with the use of vibrating apparatuses or instruments, especially in the ultrasonic range,
- wherein it contains:
- a) between 5 and 45 wt. % of hard particles;
- b) between 2 and 40 wt. % of an alcohol component comprising at least one monohydric or polyhydric alcohol or a mixture of monohydric or polyhydric alcohols;
- and
- c) between 0.1 and 10 wt. % of dispersants and thickeners.
A suspension as claimed in one of the preceding claims wherein, the dispersants and thickeners consist of between 2 and 10 wt. % of highly disperse silicic acid.
A suspension as claimed in one of the preceding claims, wherein the dispersants and thickeners consist of between 0.1 and 4 wt. % of bentonite.
A suspension as claimed in one of the preceding claims, wherein the dispersants and thickeners consist of between 0.15 and 3 wt. % of polysaccharides.
A suspension as claimed in one of the preceding claims, wherein it contains at least one preservative.
A suspension as claimed in one of the preceding claims, wherein the pH is between 5 and 9, preferably between 6 and 8.
A suspension according to one of the preceding claims, wherein the alcohol component contains at least one alcohol from the following group:
- ethanol, propanols, glycerol, propylene glycols and diethylene glycol.
Dependencies are inferred from the claim text.