Dental prosthesis and method for manufacturing a dental prosthesis
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United States of America Patent
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-
Jan 3, 1995
Grant Date -
N/A
app pub date -
Mar 31, 1993
filing date -
Apr 6, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for manufacturing a dental prosthesis, such as a dental crown, wherein at least the visible part of the prosthesis (the outside) is subjected to a material removing operation by means of a numerically controlled micro machine tool and wherein the machining paths are visible on the final prosthesis. The machining paths follow a three-dimensionally curved line and do not lie in a flat plane. The dental prosthesis which is manufactured in this manner has a natural-looking appearance. According to another aspect of the invention the shape of the dental prosthesis is such that near the edge of the prosthesis the cement layer is thicker than at some distance from the edge to relieve the edge of the dental prosthesis from bearing heavy forces.
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