Dentistry – Method or material for testing – treating – restoring – or... – Anchor pin
Patent
1986-07-10
1987-11-24
Peshock, Robert
Dentistry
Method or material for testing, treating, restoring, or...
Anchor pin
A61C 504
Patent
active
047086556
ABSTRACT:
A contoured dental post for retaining a dental restoration on a prepared tooth stub, the dental post including 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 angularly extends downwardly along a portion of the length of the body portion on opposite sides of the body portions. The ribs project laterally to approximate the oval shape of the canal in the tooth stub into which the bore is formed, where the ribs taper downwardly to approximate the conical shape of the canal. One rib is longer than the other rib to provide a pilot for inserting the ribs into the bore. A drill jig is also provided for contouring the canal to receive the dental post. The drill jig includes a head block having a depending central shaft extending therefrom for insertion into the bore. At least one offset aperture is laterally positioned in the head block, the aperture having angular side walls. The aperture extends downwardly into a portion of the shaft along an angular penetration into the shaft. The drill jig is utilized to form a pair of angular lateral apertures along a preformed central bore in the tooth stub to accommodate the ribs on the dental post for suitable accommodation of the dental post into the tooth stub. The drill jig can be provided with a second offset aperture or with a fin on the shaft.
REFERENCES:
patent: 1139028 (1915-05-01), Gibson
patent: 4097168 (1978-06-01), Pagel
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