Improvements in artificial teeth or tooth crowns / [Hermann Friedland].

  • Friedland, Hermann.
Date:
1900
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in artificial teeth or tooth crowns / [Hermann Friedland]. Source: Wellcome Collection.

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    N° 22,022 A.D. 1099 Date of Application, 3rd Nov., 1899 Complete Specification Left, 24th July, 1900—Accepted, 29th Sept., 1900 PROVISIONAL SPECIFICATION. Improvements in Artificial Teeth or Tooth Crowns. I, Hermann Friedland, of No. 2i, Gutenbergsplatz, Mayence, in tlic Empire of Germany, Dentist, do hereby declare the nature of this invention to be as follows; —* This invention has for its object artificial tooth-crowns which are adapted to f) be used for making complete artificial sets or rows of teeth or bridged teeth. The actual tooth-crown is provided on both sides with a not too low strip of metal, which is so let into the crown as to form with it a completely level surface. The metal strips situated on both sides of the tooth-crown may be connected together on the rear side by a bent piece or strip also let into the tooth crown. Id When separate tooth-crowns are to be connected one with another, this is effected by simply soldering together the adjacent lateral strips of adjacent tooth- crowns until the desired number of tooth-crowns are connected one to another in the desired form. The separate tooth-crowns are well fitted to the jaw, and do not require to be 1,J held thereon by palate plates or the like, but are screwed on the roots or stumps of teeth or hooked fast to sound teeth. The screwing of tooth-crowns to the roots or stumps of old teeth is however already in itself known. For this purpose a perforated tooth-crown is employed which is pushed over a 20 screwed pin soldered or let into the tooth root or stump in question, and drawn tight from above by means of a small nut. In the making of a closed set or row of teeth a hollow attachment crown is arranged at both ends and in the middle, and the whole row of teeth is fastened in the manner hereinbefore described on the jaw by means of this fastening 25 crown. If the bridging over of a sound tooth is to be effected this is done by connecting the rear sides of the artificial tooth-crowns which are located on both sides of the tootTT to be bridged over by means of a bar right along the back of the sound tooth. In this manner the most natural replacement of teeth in a defective row. 30 or of only some teeth in proximity to one another, may be effected by means of these improved tooth-crowns and in the shortest possible time. Dated this 2nd day of November 1899. WM. P. THOMPSON & Co., Of 6, Lord Street, Liverpool, Agents for the Applicant. [Price