Base assembly for fabrication of false teeth

• US 7,192,278 B2
• Filed: 08/11/2005
• Issued: 03/20/2007
• Est. Priority Date: 04/07/2005
• Status: Expired due to Fees

• Current Assignee: Qingdao Donghe Denture Manufacturing Co., Ltd.
• Original Assignee: Qingdao Donghe Denture
• Inventors: Cao, Guodong
• Primary Examiner(s): Lewis; Ralph A.
• Application Number:
  US11/201,200
• Publication Number:
  US 20060228666A1
• Time in Patent Office: 586 Days
• Field of Search: 433/74, 433/60, 433/213
• US Class Current: 433/60
• CPC Class Codes: A61C 13/0027 Base for holding castings
• CPC Class Codes: A61C 9/002 Means or methods for correctly replacing a dental model, e.g. dowel pins; Dowel pin positioning means or methods

Abstract

A base assembly for fabrication of false teeth includes a base, and a gum-like raised portion is provided on the said base, a plurality of protruding blocks are provided symmetrically and evenly at the interior and exterior arc edges on the raised portion, and positioning holes are provided between two opposite protruding blocks; a removable holddown plate with a configuration corresponding to the said raised portion is provided over the raised portion, and the holddown plate has a flat surface on the upper surface, has the recesses corresponding to the protruding blocks to be engaged with the protruding blocks and the mounting pins corresponding to the positioning holes to be engaged with the positioning holes on the lower surface. The time to fabricate false teeth is largely reduced and the fabrication accuracy of the false teeth is improved by using the base assembly of the present invention.

Claims

1. A base assembly for fabrication of false teeth, including a base, comprising:

a raised portion in the shape of a gum provided on the said base, a number of protruding blocks provided symmetrically and evenly at the interior and exterior arc edges of the raised portion, and positioning holes provided between two opposite protruding blocks; and

a removable holddown plate with a configuration corresponding to the raised portion provided over the raised portion, and wherein the holddown plate has a flat surface on the upper surface, has recesses corresponding to the protruding blocks to be engaged with the protruding blocks and has mounting pins corresponding to the positioning holes to be engaged with the positioning holes on the lower surface, wherein detachable positioning pins are provided on the upper surface of the said holddown plate opposite to the mounting pins of the lower surface, and the positioning pins are secured through the threaded connecting portion provided on the top of the mounting pins.

2. The base assembly for fabrication of false teeth according to claim 1, which characterized in that, a jaw support fixing groove is provided at a side of the said base.

3. The base assembly for fabrication of false teeth according to claim 1, which characterized in that, the said protruding blocks at the exterior arc edge of the raised portion are in the shape of semicircle, while the protruding blocks at the interior arc edge are in a U-shape.

4. The base assembly for fabrication of false teeth according to claim 1, which characterized in that, the said positioning holes are two or more rows of parallel circular holes.

5. The base assembly for fabrication of false teeth according to claim 1, which characterized in that, the positioning holes are a single row of square holes, trigonal holes, rectangular holes or rhombic holes.

6. The base assembly for fabrication of false teeth according to claim 1, which characterized in that, the said mounting pins are made of metal or organic materials.