Method for making dental impressions

Abstract

Abstract A material and method are disclosed facilitating the forming of impressions of teeth and/or supporting structures, such as the alveolar ridge to be duplicated and restored. An elastomeric impression material, preferably subject to photochemical or chemical curing, is provided, such for example as formed from polyesters, polyethers, polysulfides, silicones, and ethylene imines, or derivatives thereof, containing a filler material, such as talc, calcium carbonate, colloidal silica, glass, quartz, acrylates, etc., and impregnated with a hemostatic agent such as a vasoconstrictor or astringent or the like with the impression material serving to maintain subgingival tissue in a retracted condition without bleeding, so as to permit an impression to be taken of a tooth surface area and volume extending below the gumline, without requiring use of gum retracting cords or bands. In use, a portion of the impression material in a cord, ring or rhomboid shape, or the like, is wedged between the gum and the tooth to conform to the contour of the tooth below the gum and cured by chemical or photochemical means. This procedure is followed by the taking of an impression with material adhering to the impression material below the gum, thereby providing an exact duplication of the tooth, both above and below the gum. The impression materials may be color-coded to delineate soft from hard tissue. By making the impression material photochemically or chemically curable the time for the procedure may be controlled, and the dentist may reline dentures without the need for laboratory work, and use it in other ways not limiting it to those mentioned.

Inventors

• 👤 Howard Cohen

Bibliographic Details