Method and apparatus for processing hard material
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United States of America Patent
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Sep 11, 2007
Grant Date -
Feb 12, 2004
app pub date -
Apr 9, 2003
filing date -
Apr 9, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus are provided for processing a hard material, for example a hard biological material such as dental enamel or bone, with optical radiation. A treatment zone of the material is selectively cleaned of ablation products and other dirt to enhance processing efficiency, and a tip through which the optical radiation is applied to the treatment zone of the hard material is spaced slightly from the treatment zone during at least a portion of the time that hydrating fluid is being applied to the zone and/or while air or another gas is applied to the zone to clean the surface thereof.
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