Dowel post for dental and medical prosthetic devices

US4268253A · kind A · utility

Inventors

• Michael Gross · Betzdorf, DE
• Christopher H. Turner

Key dates

• Filing date: Dec 26, 1979
• Grant date: May 19, 1981
• Expiry date: Dec 26, 1999

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C13/30
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A dowel post for securing dental and medical prostheses is provided having improved retention when cemented in a parallel-sided blind hole, and which reduces build-up of hydrostatic pressure ahead of the post as it is inserted. The dowel post comprises a head on which said prosthesis is formed or mounted and a shaft extending downwardly therefrom having a channel formed therealong providing a flow path for the cement. The channel is formed by one or more and preferably four or five helical concave flutes wound about the axis of the post at a pitch angle to the axis of 70.degree. or less and preferably at about 45.degree..