Apparatus and method for applying a silicon oxide-containing adhesion-promoting layer on metallic dental prostheses

US4600390A · kind A · utility

Assignee

• KULZER GMBH · DE

Inventors

• Roland Gobel · Jena, DE
• Rudolf Musil · Jena, DE
• Hans-Jurgen Tiller · Jena, DE
• Steffen Oppawsky · Bad Homburg vor der Höhe, DE
• Albert L. Schmidt · Hopkinton, US
• Rolf Janda · Bad Homburg vor der Höhe, DE

Key dates

• Filing date: Dec 26, 1984
• Grant date: Jul 15, 1986
• Expiry date: Dec 26, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C16/453
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

To apply a silicon oxide adhesion-promoting layer to a metal prosthesis part or frame, for subsequent application of a dental plastic thereon, the prosthesis is subjected to flame hydrolysis derived from a flame hydrolysis burner (11) which has a silicon compound in vapor or gas form applied thereto in addition to a carbon-containing combustion gas, such as propane and air, the prosthesis part or frame being passed through the flame from the burner in the forward third thereof, the burner flame cone having, in operation, a length (L) of between 15 to 20 cm, a gas stream speed of about 1 m/sec., and wherein the length (L) of the cone exceeds the spacing distance (D) of the farthest part of the prosthesis from the mouth of the burner by only up to about 25%. For fine adjustment of the cone, a tinting substance can be added to the flame.