Dental instrument having a nozzle for cooling

Dentistry – Apparatus – Having intra-oral dispensing means

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433104, A61C 110, A61C 102, A61C 108

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active

053521188

ABSTRACT:
A dental instrument having an active tool for treating a hard dental substance includes an arrangement for spraying water to cool the preparation location with the water either forming an envelope surrounding the tool or being a finely atomized stream of a solid angle directed onto the preparation location. The volume proportion of cooling air relative to the volume of the water in both versions is not greater than the volume of the water so that the envelope or spray are substantially free of air.

REFERENCES:
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patent: 3952416 (1976-04-01), Lingenhole
patent: 3956826 (1976-05-01), Perdreaux, Jr.
patent: 4277025 (1981-07-01), Harvey
patent: 4526541 (1985-07-01), Hubschmid
patent: 4802852 (1989-02-01), Shea
patent: 5078601 (1992-01-01), Badoz et al.
patent: 5167501 (1992-12-01), Castellini
Abstract of Japanese Patent 2-149357 of Jun. 7, 1990, Patent Abstracts of Japan, vol. 14, No. 397, C-752, Aug. 28, 1990.

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