The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 1978
Filed:
Sep. 20, 1976
Leland T Kennedy, Richmond, VA (US);
IPCO Hospital Supply Corporation Whaledent International Division, New York, NY (US);
Abstract
A method and apparatus for forming a dental prosthesis in situ for the reration of one or more missing, worn or broken teeth. The method includes forming an elastomeric mold half containing a corrected model of tooth areas to be restored, and forming a hard model of the tooth areas after they have been prepared for restoration. A pair of channels are placed through the elastomeric mold at spaced apart locations. The elastomeric mold and the hard model are secured together to form an assembly including a mold cavity therein. The assembly is placed in a vacuum chamber which can be pumped to produce a vacuum inside the chamber and inside the mold. One of the channels of the mold is connected to an overflow container within the vacuum chamber, and the other of the channels is connected to a source of liquid prosthesis forming material which is contained outside of the vacuum chamber. The connection between the source of material and the assembly is initially closed during which the vacuum chamber is pumped out producing a vacuum therein to a predetermined level. The connection between the source and the assembly is then opened whereby the liquid prosthesis forming material is pushed into the mold cavity within the assembly.