Dentistry – Method or material for testing – treating – restoring – or... – Anchor pin
Patent
1985-05-20
1986-07-15
Peshock, Robert
Dentistry
Method or material for testing, treating, restoring, or...
Anchor pin
A61C 504
Patent
active
046003924
ABSTRACT:
A contoured dental post for retaining a dental restoration onto a prepared tooth stub, the dental post includes an elongated cylindrical body portion having peripheral grooves for anchoring the body portion within a cement prepared bore in the tooth stub. A pair of radially projecting ribs extends on opposite sides of the body portion, along at least a portion of the length of the body portion. The ribs suitably fit the approximate oval shape of the canal in the tooth stub into which the bore is formed. Preferably, one rib is longer than the other rib. A drill jig is also provided for contouring the canal to receive the dental post. The drill jig includes a stepped head block having a depending shaft extending therefrom for insertion into the bore. A pair of offset apertures is laterally positioned on either side of the shaft and extend through respective stepped portions of the head block and into a portion of the shaft. The distances between the upper surface of the respective stepped portions of the head block and the bottom of the respective apertures position in the shaft there beneath are substantially equal to each other to permit utilization of a single drill bit for drilling out two lateral bores in the canal walls of the tooth stub, whereby the lateral bores have different lengths due to the stepped arrangement of the head block.
REFERENCES:
patent: 347975 (1886-08-01), Starr
patent: 688661 (1901-12-01), Miller
patent: 2536669 (1951-01-01), Thau-Jensen
Ipco Corporation
Peshock Robert
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