Patents Assigned to Ultradent, Inc.
  • Method of preparing gingival area for dental crowns
    Patent number: 4551100
    Abstract: A method for controlling or stopping the flow of blood is provided for use in preparing the gingival or gum area of the mouth for dental crowns. An aqueous solution of ferric sulfate (Fe.sub.2 (SO.sub.4).sub.3), having a concentration of preferably about 13% in water and glycol. The solution is applied to the gingival area and rapidly coagulates fresh blood to act as an effective astringent without adverse side effects or staining of teeth.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: November 5, 1985
    Assignee: Ultradent, Inc.
    Inventor: Dan E. Fischer