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Surgical treatment method and instrument

  • US 5,020,995 A
  • Filed: 01/18/1989
  • Issued: 06/04/1991
  • Est. Priority Date: 01/18/1989
  • Status: Expired due to Term
First Claim
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1. A method for cutting tooth tissue comprising:

  • imparting a dark coloration to the tooth tissue at a location where the tissue is to be cut;

    generating laser radiation at a wavelength which is absorbed more strongly by hydroxyapatite than by water;

    producing a succession of pulses of the generated radiation with an energy level, pulse duration, and repetition rate selected to cut the tooth tissue without causing harmful side effects; and

    concentrating the radiation pulses on the tissue at the location of the dark coloration and to a spot sufficiently small to cause cutting of the tissue.

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