Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1992-12-16
1994-10-04
Mancene, Gene
Dentistry
Apparatus
Having intra-oral dispensing means
433104, A61C 110, A61C 102, A61C 108
Patent
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.
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Abstract of Japanese Patent 2-149357 of Jun. 7, 1990, Patent Abstracts of Japan, vol. 14, No. 397, C-752, Aug. 28, 1990.
Franetzki Manfred
Wohlgemuth Juergen
Cherichetti Cindy A.
Mancene Gene
Siemens Aktiengesellschaft
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