Vita Zahnfabrik H. Rauter Gmbh Co. Kg

Bam Bundesanstalt Fuer Materialforschung Und-pruefung

Humboldt Universitaet Berlin Carite Universitaetsklinikum (ccm)

Humboldt-universitaet Berlin, Charite Universitaetsklinikum (ccm) Medizinische Fakultaet Der Humbolt-universitaet

Fkb Feinwerktechnik Und Kunststoffverarbeitungs Gmbh

Emil Nagel

Norbert Thiel

Georg Berger

Wolf-Dieter Müller

Stefan Aechtner

Helga Hornberger

Rolf Schatz

Klaus-Peter Lange

Bernhard Link

A composite material with a porous inorganic-nonmetallic matrix and a second material, and a process for its production, are characterized in that the porous inorganic-nonmetallic matrix has a bending strength &#x2267;40 MPa as measured according to ISO 6 872; the second material is an organic material which at least partly fills the pores of the porous matrix; and the composite material has a modulus of elasticity, E, &#x2267;25 GPa as measured according to ISO 10 477.

Composite material and method for the preparation thereof

A composite material with a porous inorganic-nonmetallic matrix and a second material, is characterized in that the porous inorganic-nonmetallic matrix has a bending strength of &#x2267;40 MPa as measured according to ISO 6 872; the second material is an organic material which at least partly fills the pores of the porous matrix; and the composite material has a modulus of elasticity, E, of &#x2267;25 GPa as measured according to ISO 10 477.

Composite material and method for the production thereof

The invention relates to a method for the production of an adhesive and an adhesive kit for joining similar or different metal surfaces or ceramics, especially in the field of biomedicine. The objective of the invention is to avoid polymerization-linked by-products and disadvantageous effects, in addition to enabling a temporary biocompatible bond between metal and metal or metal and ceramics. The inventive method consist in using a monomer-free polymethylmethacrylate which is mixed with a suitable, non-toxic solvent and a bioactive vitreous-crystalline material with a particle size ranging from 0.05&#x2013;20&#x3bc;, consisting of 15&#x2013;45 wt. % CaO, 40&#x2013;45 wt. % PO, 10&#x2013;40 wt. % ZrOand 0.7&#x2013;3.5 wt. % fluoride, having apatite and calcium zircon phosphate as main crystal phases and a glass phase as an auxiliary component until a flowable mixture is obtained. The invention also relates to an adhesive kit consisting of said components. Sufficient amounts of resistance are obtained for a temporary bond, enabling the bond to be neutralized when desired.

Temporary adhesive for metal-metal and metal-ceramic bonds

A method for producing a bioactive bone cement and a bone cement kit for anchoring artificial joints and for filling out bone defects. The method avoids polymerization-linked by-products and disadvantageous effects, while at the same time providing the bone cement with long-term stability. The inventive method uses a monomer-free polymethylmethacrylate, which is mixed with a suitable non-toxic solvent, and a bioactive, vitreous-crystalline material with a particle size ranging from &#x3e;20 to 200 &#x3bc;m, having 15&#x2013;45 wt. % CaO, 40&#x2013;45 wt. % PO, 10&#x2013;40 wt. % ZrOand 0.7&#x2013;3.5 wt. % fluoride, having apatite and calcium zircon phosphate as main crystal phases and a glass phase as an auxiliary component until a flowable mixture is obtained. The invention also relates to a bone cement kit having said components.

Method for producing a bioactive bone cement and bone cement kit

A device for treating plastic parts for use in dental and orthodontic applications includes a pressure receptacle which has walls which define a hollow interior with an opening which is closable by a cover or lid. A support for material to be treated is placed within the hollow interior at a spaced location in the interior walls and adjacent a heating device which is advantageously an electric heating element. The device includes a rotatable fan which is advantageously mounted on the vessel as a shaft which extends through the vessel interior and carries a rotatable fan which is rotated so as to direct a gas such as air past objects held on a support and past the heater which maintains the circulating gases at a temperature which permits polymerization of the parts. The heating air is continuously circulated and it is heated by the heater sufficiently to maintain a selected polymerization temperature.

Growing community of inventors

Bad Säckingen, Germany

Emil Nagel