Vaporizing tartar and calculus around a tooth root
Patent 5188532 Issued on February 23, 1993. Estimated Expiration Date: 
March 11, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 11, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDevice for preventing tooth decay by laser beam irradiation and method of preventing tooth decay by use of the same Dental laser method Optical toothbrush and method of use Dental laser assembly Patent #: 5055048 InventorAssigneeApplicationNo. 850240 filed on 03/11/1992US Classes:433/216CleaningExaminersPrimary: O'Connor, Cary E.Attorney, Agent or FirmInternational ClassA61C 015/00Foreign Application Priority Data1988-12-21 FRAbstractThe cutting of tooth or bone tissue with laser radiation is enhanced by giving the radiation a polarization P parallel to the surface of the tissue being cut. For enlarging a tooth canal, laser radiation is delivered via an optical fiber which is introduced into the canal and is tapered in the region of its distal end. To fill a canal, an optical fiber having a low melting point is introduced into the canal and radiation is conducted through the fiber to melt the fiber and form the filling. The fiber may be coated with a material which will be melted by the radiation and will bond to the canal wall. Fillings and coatings are formed on tooth or bone tissue by projecting toward a surface of the tissue two starting components which when combined and exposed to light of a selected wavelength undergo a photochemical reaction to form a calcium containing product, and causing light of the selected wavelength to impinge on the components at least partially before they reach the surface in order to create the reaction and cause the resulting calcium containing product to bond to the tissue. Bacteria on a tooth surface are destroyed by staining the bacteria to cause the bacteria to have a dark coloration, and exposing the stained bacteria to laser radiation at a wavelength and energy level sufficient to destroy the bacteria.Other References
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