Degussa Aktiengesellschaft

Kulzer & Co. Gmbh

Ralf Janda

Peter Panster

Peter K Kleinschmit

Bernhard Eppinger

Steffen Oppawsky

Manfred Dankowski

Hans-Jurgen Tiller

Albert Schmidt

Friedrich-Wilhelm Breitbarth

Michael Grosch

Peter Kleinschmidt

The invention relates to a process for preparing a dental material filler in the form of a copolycondensate. An alkoxy silane having a formula of Si(OR.sup.3).sub.4 and a titanium compound are dissolved in a water-miscible solvent. Optionally, additional alkoxysilanes having the formulas R.sup.1 --Si(OR.sup.3).sub.3 and R.sup.2.sub.2 Si(OR.sup.3).sub.2 are also dissolved in the solvent. The reactants are hydrolyzed and condensed to form a reaction mixture from which a heterosiloxane is formed. The heterosiloxane is separated, optionally washed, dried and tempered. The heterosiloxane may then be ground to a desired size and/or formed into various dental materials, such as fillings, inlays, veneers, seals, crowns, bridges, dentures, artificial teeth and adhesives for dental materials. Alternatively, the reaction may take place without the use of a water miscible solvent, such that the precondensing takes place in water.

Process for preparing a pasty dental material which is an

A pasty dental material is disclosed which hardens to a high gloss polishable mass in the presence of an initiator. The mass is formed of a polymerizable bonding agent combined with an organosiloxane filler which contains units of the formula I ##STR1## and which has been subjected to an after treatment which is a condensation in an autoclave for a period of time of 1 hour to 5 days at a temperature of 60.degree. C. to 250.degree. C. under a pressure which is the sum of the partial pressures at the given temperature.

Pasty dental material which is an organopolysilane filler combined with

A pasty dental material, which hardens to a high-gloss polishable mass in the presence of an initiator, comprising a polymerizable bonding agent and a finely divided filler based on special heterosiloxanes.

Pasty dental material

Thermosetting dental materials which contain a peroxycarboxylic acid in addition to other components customarily contained in dental materials and in addition to at least one monomeric ester of methacrylic acid as polymerization catalyst. These dental materials are distinguished from those which contain an organic peroxide as polymerization catalyst by a distinctly better stability during storage.

Thermosetting dental materials

A terminal for a light conductor for uniform illumination of a rectangular field in medical and, especially, dental applications has a transparent, cylindrical lens body in a mount with its axis perpendicular to the axis of a socket for receiving the light exit end of the light conductor. The side of the cylindrical lens body facing the socket has a trough-shaped recess of symmetric cross section. The width of the trough-shaped recess continuously expands from the bottom to the margin of the trough-shaped recess, the bottom being perpendicular to the axis of the socket and perpendicular to the axis of the cylindrical lens body.

Terminal for a radiation conductor

A dental composition which when used together with a photopolymerizable dental sealing composition promotes adhesion of resin-based dental restorative materials to the tooth consisting of

Photopolymerizable phosphate-containing adhesion promoting dental

A dental composition which when used together with a photopolymerizable dental sealing composition promotes adhesion of resin-based dental restorative materials to the tooth consisting of a solution of tetramethacryloyloxyethyl pyrophosphate and a photopolymerization catalyst comprising camphor quinone and an amine in acetone.

Growing community of inventors

Bad Homburg, Germany

Ralf Janda