Inventor

Kai C. Chan

Document Type

Patent

Patent Number

US Patent 4,187,611

Patent agency

United States Patent and Trademark Office

Publication Date

2-12-1980

Assignee

University of Iowa Research Foundation (Iowa City, IA, US)

Application Number

05/840,280

Date Filed

1977-10-07

Total Pages

4 pages

Abstract

A dental retention pin has a threaded longitudinally grooved lower shaft section, an intermediate sealing section for sealing the hole in which the pin is threaded, and an upper section embeddable in a surrounding body of restorative material. A pinhole is drilled in a tooth and the pin is inserted therein by rotation to cut threads in the dentin as fluids are vented through the groove. The sealing section then enters the pinhole to establish a sealing relationship therewith.

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URL

https://ir.uiowa.edu/patents/20