Kulzer Gmbh

Kulzer & Co. Gmbh

Veb Jenaer Glaswerk

Rudolf Musil

Hans-Jurgen Tiller

Roland Gobel

Albert Schmidt

Steffen Oppawsky

Dieter Schodel

Werner Vogel

Karin Naumann

Gunter Carl

Brigitte Magnus

Wolfram Hoeland

Eggert Beleites

Guenther Knak

Lutz Kreisel

Harry Jungto

Steffen Grosse

Frank Vogel

Christine Abert

Hilmar Gudziol

Michael Hopp

Rolf Janda

Ralf Jacobi

Firmly adhering, durable dental metal/plastic composite structures that are stable in the presence of moisture can be made from dental alloys and plastics, if an adhesion promoting layer having a concentration gradient and comprising silicon dioxide and metal oxide, particularly chromium oxide, is disposed between them.

Primer composition for dental metal/plastic composite structure

Micaceous-cordierite-glass ceramic particularly suitable for stomatological, head surgery and neck surgery applicatiosn has a fracture toughness K.sub.IC of up to 2.0 MPa m.sup.1/2, a hardness HV.sub.0.07 of 300-1000, a compressive strength of up to 450 N/mm.sup.2, a linear thermal expansion coefficient of 75-125.times.10.sup.-7 K.sup.-1, good chemical stability and excellent machinability as well as a high resistance to wear and comprises a composition in weight percentages of

Micaceous-cordierite-glass ceramic

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.

Apparatus and method for applying a silicon oxide-containing

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Jena, Germany

Rudolf Musil