Dentistry – Miscellaneous
Patent
1991-05-22
1992-09-29
Wilson, John J.
Dentistry
Miscellaneous
4332021, 4332031, A61C 200
Patent
active
051510448
ABSTRACT:
A blank for the manufacture of artificial teeth, either replacement whole teeth or crowns, permits a tooth to be produced by machining from the blank which comprises a layered block of synthetic plastics materials, the layers being of predetermined varying color (hue), chroma, value and translucency to simulate the pulp, dentine and enamel layers in a real tooth, thereby providing an artificial tooth with the distribution and depth of color of a real tooth. The blank has a core portion including a reference point for machining purposes and the layers are applied over the core portion, their thicknesses and thickness distributions being predetermined so as to be able to obtain different tooth colors by selective removal from the layers. Thus, the tooth color is varied by milling the tooth from a different section of the layered block to vary the thicknesses of the layers, at least at the labial, mesial, distal and occlusal surfaces, and so as to obtain a custom tooth matched very closely to a patient's real tooth color and pattern. The teeth can be manufactured from materials with a hardness closely matching that of a real tooth to provide similar wear properties.
REFERENCES:
patent: 1511459 (1924-10-01), Gibson
patent: 2585858 (1952-02-01), Schwartz
patent: 4411626 (1983-10-01), Becker et al.
patent: 4615678 (1986-10-01), Moermann et al.
LandOfFree
Blanks for the manufacture of artificial teeth and crowns does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blanks for the manufacture of artificial teeth and crowns, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blanks for the manufacture of artificial teeth and crowns will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1965500