Dental retention pins

Details Dental retention pins Dental retention pins

1986-02-10

1987-08-04

Goodrow, John L.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428432, 428469, 4332011, 4332021, 433220, 4332221, B32B 1500, B32B 900, A61C 800

Patent

active

046845550

ABSTRACT:
A dental retention pin preferably made of metal is provided with a closed, cylindrical coating of bond assisting material, and an additional layer of a plastics filling material in order to obtain a physical-chemical or a purely chemical bond between the retention pin and the filling structure for obtaining a substantially increased retention power compared with known metal pins, which merely result in a mechanical or mechanical-physical joint to the filling structure. The retention force will be increased by shrinking the bond assisting layer or the outermost plastics layer onto said bond assisting layer around the pin so that the layer spans itself around the pin in a ring-like manner. Furthermore, examples for the structure of a retention pin are described, which improve the handling and insertion of such retention pins by the dentist considerably.

REFERENCES:
patent: 3829973 (1974-08-01), Masuhara et al.
patent: 4028325 (1977-06-01), King et al.
patent: 4355978 (1982-10-01), Ericson
patent: 4398007 (1983-04-01), Kubota et al.
patent: 4443494 (1984-04-01), Gonser
patent: 4514174 (1985-04-01), Dougherty et al.
APM-Sterngold 6-25-84.

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