Abstract: A repair kit for repairing damaged areas (2) in surfaces (5) or on edges of objects (1) of natural stone, in particular of marble, includes a liquid or highly viscous filler material (3), which is curable by polymerization, polyaddition or polycondensation, and furthermore at least one granulate (4) already cured by polymerization, polyaddition or polycondensation.

Abstract: The invention relates to dental prostheses which have at least one metal-free anchoring element made of plastic material with a bending modulus of elasticity of at least 10 GPa and a maximum elongation of at least 0.8%.

Abstract: A method for producing a synthetic material part such as, for example, a dental restorative part, is provided and includes spray applying with a spray device a material having at least a polymerizable synthetic material onto a base in succeeding layers. Each layer of the spray applied material is substantially continuously polymerized by the spray device and has a viscosity which permits working of the applied material in an unpolymerized condition thereof with the spray device. The method also includes hardening the one or more of the already applied layers prior to the application of subsequent layers.

Abstract: Kit for the preparation of dental prostheses which contains (i) polymerizable matrix material, (ii) filler and (iii) at least one dye composition in physically separate form.

Abstract: A repair kit for repairing damages (2) in surfaces (5) or on edges of objects (1) of natural stone, in particular of marble, comprises a liquid or highly viscous filler material (3), which is curable by polymerization, polyaddition or polycondensation, and furthermore at least one granulate (4) already cured by polymerization, polyaddition or polycondensation.

Abstract: The invention relates to dental prostheses which have at least one metal-free anchoring element made of plastic material with a bending modulus of elasticity of at least 10 GPa and a maximum elongation of at least 0.8%.

Abstract: Dental material containing a polymerizable component and a component applied superficially to the polymerizable component, which can be removed after the curing of the polymerizable material with accompanying formation of a rough surface.

Abstract: Shaping cap made of ceramic, metal or plastic material, which is suitable as a solid constituent of dental pin structures.

Abstract: The invention relates to dental materials which contain filler and a polymerizable matrix and are characterized in that they additionally have a component which contracts during thermal treatment.

Abstract: Kit for the preparation of dental prostheses which contains (i) polymerizable matrix material, (ii) filler and (iii) at least one dye composition in physically separate form.

Abstract: A method for producing a synthetic material part such as, for example, a dental restorative part, is provided and includes spray applying with a spray device a material having at least a polymerizable synthetic material onto a base in succeeding layers. Each layer of the spray applied material is substantially continuously polymerized by the spray device and has a viscosity which permits working of the applied material in an unpolymerized condition thereof with the spray device. The method also includes hardening the one or more of the already applied layers prior to the application of subsequent layers.

Abstract: The invention relates to dental materials which contain filler and a polymerizable matrix and are characterized in that they additionally have a component which contracts during thermal treatment.

Abstract: Dental material containing a polymerizable component and a component applied superficially to the polymerizable component, which can be removed after the curing of the polymerizable material with accompanying formation of a rough surface.

Abstract: Shaping cap made of ceramic, metal or plastic material, which is suitable as a solid constituent of dental pin structures.

Abstract: A method for manufacturing a fiber rein-forced composite dental restoration comprising the steps of (i) preparing a mould; (ii) filling the cavity of the mould with a fiber-reinforced polymerizable material comprising an organic matrix and a fiber component embedded within the matrix; (iii) applying pressure to the fiber-reinforced polymerizable material; and (iv) curing the fiber-reinforced polymerizable material. The method is characterized in that the mould is designed in a way which allows excess organic matrix material to escape form the cavity during pressing.

Abstract: The invention relates to a method for manufacturing a fiber reinforced composite comprising the steps of (i) preparing a mould; (ii) filling the cavity of the mould with a fiber-reinforced polymerizable material comprising an organic matrix and a fiber component embedded within the matrix; (iii) applying pressure to the fiber-reinforced polymerizable material; and (iv) curing the fiber-reinforced polymerizable material. The method is characterized in that the mould is designed in a way which allows excess organic matrix material to escape form the cavity during pressing.

Abstract: The invention relates to dental materials based on wax-like polymerizable substances. The dental materials contain (a) 0 to 70 wt. % of at least one polymerizable monomer and/or oligomer; (b) 0.1 to 5 wt. % of at least one polymerization initiator; (c) 0 to 60 wt. % of one or more fillers, (d) at least 20 wt. % of the wax-like polymerizable substance. They can be kneaded at room temperature and can be modelled in non-polymerized state without additional heating, like conventional waxes. On polymerization, the wax component is covalently incorporated into the polymer. The dental materials are suitable for producing temporary and permanent dental prostheses.

Abstract: A dental light-curing opaquer is described which is characterized by a content of cross-linked bead polymerizate with incorporated colored pigment and of polymerizable polyfunctional monomer and which is highly suitable for covering metallic surfaces of dental restorations.

Abstract: In a process for improving the adhesion of plastics to metals in the production of dental prostheses, in which a silicon dioxide layer is applied to the metal surface and subsequently silanized and then the plastic and metal bonded together the improvement consisting essentially of, forming the silicon dioxide layer by (1) applying a silica sol or dispersion of very finely divided silica to the metal surface and (2) baking the sol or dispersion at a temperature of 100.degree. to 800.degree. C.

Abstract: A process for producing artificial teeth or parts thereof is given, in which a mass of at least one polyfunctional isocyanate, at least one polyol and at least one methacrylate monomer, as well as in each case one catalyst for the polymerization of the methacrylate monomer and for the acceleration of the formation of a urethane is hardened in a first stage to an elastic blank, which can then be cured in a second stage to artificial teeth or parts thereof. A storage-stable dental material for performing the process comprises two components, namely at least one polyfunctional isocyanate as the first component and the remaining constituents as the second component.