Abstract: Method for the manufacturing of a dental restoration including a dental restoration core 2 and a veneer layer 3, the veneer layer 3 being located at predetermined locations on the dental restoration core 2 and having predetermined thickness at the predetermined locations; the method including: manufacturing the dental restoration core; filling a void 5 in a mould block 1; 10 with a slurry or paste containing a constituent material for a veneer layer, the dental restoration core being positioned in the void; pressing the slurry or paste into the void, the void being arranged to have the slurry cover the dental restoration core at at least the predetermined locations; heating the slurry or paste in a hardening or pre-sintering process to obtain a hardened veneer structure covering the dental restoration core; milling a contour of the veneer layer into the hardened veneer structure to form the dental restoration.

Abstract: A method for manufacturing a heat-resistant mold for manufacturing a dental restoration, wherein a wax model is manufactured in a conventional manner and wherein from a powdered heat-resistant material consisting of powdered particles coated with a hydrophobic material liquid at room temperature, with water or another mixing liquid, a slurry is prepared, wherein the slurry is applied to the wax model, and wherein the wax model covered slurry is subjected to a heating step, wherein the wax is burnt off.

Abstract: Method for the manufacturing of a dental restoration including a dental restoration core 2 and a veneer layer 3, the veneer layer 3 being located at predetermined locations on the dental restoration core 2 and having predetermined thickness at the predetermined locations; the method including: manufacturing the dental restoration core; filling a void 5 in a mould block 1; 10 with a slurry or paste containing a constituent material for a veneer layer, the dental restoration core being positioned in the void; pressing the slurry or paste into the void, the void being arranged to have the slurry cover the dental restoration core at at least the predetermined locations; heating the slurry or paste in a hardening or pre-sintering process to obtain a hardened veneer structure covering the dental restoration core; milling a contour of the veneer layer into the hardened veneer structure to form the dental restoration.

Abstract: The present invention relates to an aesthetic dental restoration having a layered structure, which dental restoration has the appearance of a natural tooth. In addition, the present invention relates to a method for preparing such dental restorations. Particularly, the invention is based on the control of interaction between opalescence and fluorescence.

Abstract: A method for manufacturing a heat-resistant mold for manufacturing a dental restoration, wherein a wax model is manufactured in a conventional manner and wherein from a powdered heat-resistant material consisting of powdered particles coated with a hydrophobic material liquid at room temperature, with water or another mixing liquid, a slurry is prepared, wherein the slurry is applied to the wax model, and wherein the wax model covered slurry is subjected to a heating step, wherein the wax is burnt off.

Abstract: The present invention relates to a method for manufacturing a tooth prosthesis, for insertion in a jawbone, including an implant and an abutment on top of the implant. The method includes: defining a shape of the prosthesis and its location in the jawbone by using first data from a first CT scan image of the jawbone and second data from a second image of a gypsum cast, correlating first and second data by extracting from the first data first position reference data of a first reference in the first image, and from the second data second position reference data of a second reference in the second image, the second reference being identical to the first reference; performing a geometric transformation on the second data and/or the first data to have a coincidence of the second image with the first image and to combine the first and second data into composite scan data.

Abstract: The present invention relates to an aesthetic dental restoration having a layered structure, which dental restoration has the appearance of a natural tooth. In addition, the present invention relates to a method for preparing such dental restorations. Particularly, the invention is based on the control of interaction between opalescence and fluorescence.

Abstract: A method for manufacturing a heat-resistant mold for manufacturing a dental restoration, wherein a wax model is manufactured in a conventional manner and wherein from a powdered heat-resistant material consisting of powdered particles coated with a hydrophobic material liquid at room temperature, with water or another mixing liquid, a slurry is prepared, wherein the slurry is applied to the wax model, and wherein the wax model covered slurry is subjected to a heating step, wherein the wax is burnt off.

Abstract: The present invention relates to a method for manufacturing a tooth prosthesis, for insertion in a jawbone, including an implant and an abutment on top of the implant. The method includes: defining a shape of the prosthesis and its location in the jawbone by using first data from a first CT scan image of the jawbone and second data from a second image of a gypsum cast, correlating first and second data by extracting from the first data first position reference data of a first reference in the first image, and from the second data second position reference data of a second reference in the second image, the second reference being identical to the first reference; performing a geometric transformation on the second data and/or the first data to have a coincidence of the second image with the first image and to combine the first and second data into composite scan data.

Abstract: The present invention relates to a process for the preparation of a full-ceramic dental restoration, comprising heat pressing of a tooth coloured pressing glass on a fully or partially supporting structure of yttria doped tetragonal zirconia (YTZP), comprised of yttria doped tetragonal zirconia ceramic having a grain size, as measured by the linear intercept method, of less than 0.6 ?m, wherein the pressing glass has a thermal expansion coefficient (TEC) of between 9.0 and 11.0 ?m/m.K (measured in the range of from 25 to 500° C.) and wherein the pressing glass has a pressing temperature of between 750 and 1200° C. In a further aspect, the invention relates to a full-ceramic dental restoration, comprising a fully or partially supporting structure of yttria doped tetragonal zirconia (YTZP) and a heat pressed tooth coloured pressing glass, which restoration is modeled to be in occlusal contact with opposing teeth and in mesio-distal contact with neighbouring teeth.

Abstract: The invention relates to a method for producing an artificial tooth, comprising a base layer substantially determining strength and at least one cover layer substantially determining appearance of a finished artificial tooth, said method comprising: establishing the available outer shape and dimensions for the finished artificial tooth, e.g.

Abstract: A pressable glass ceramic which contains lithium silicate glass and leucite is disclosed. Also, disclosed is the combination of leucite and a lithium silicate glass to stably increase the coefficients of thermal expansion of the resulting glass composition, and the preparation of leucite suitable for addition to the glass composition. Also disclosed are methods for fabricating glass ceramic and dental products from the pressable glass ceramic.

Abstract: The invention relates to a method for producing an artificial tooth, comprising a base layer substantially determining strength and at least one cover layer substantially determining appearance of a finished artificial tooth, said method comprising: establishing the available outer shape and dimensions for the finished artificial tooth, e.g.

Abstract: The invention relates to a particular pressable glass ceramic which contains lithium silicate glass and leucite. Further, the invention concerns the application of leucite for stably increasing the thermal expansion of a glass composition, and the preparation of leucite suitable for that application; finally, the invention relates to methods for fabricating glass ceramic and dental products therefrom.

Abstract: A method for producing a ceramic material, subsequently including mixing ceramic material, such as oxidic ceramic material, which as a raw material essentially comprises aluminum oxide, zircon oxide and/or titanium oxide, and glass component; melting at least the glass component in the mixture by sintering, where the glass component infiltrates the ceramic material and absorbs raw material of the ceramic material through a reaction at the surface; and bringing the mixture into a shape, such as powder, which is suitable for further processing, such as additional sintering. Also, a basis for the crown, the crown in its entirety having layers of for instance porcelain applied to the basis, and methods for producing the basis and the crown through subsequent processing steps, to which the basis is preferably subjected on the same underground, for instance based on CAD/CAM techniques.

Abstract: The invention relates to silver-palladium alloys for the manufacture of dental prostheses which can be faced with dental ceramic. Because of selected contents of the alloy elements indium, tin and zinc, these cause no discolorations when combined with low-melting dental ceramic with a coefficient of thermal expansion of approx. 16.5 &mgr;m/mK.

Abstract: The invention relates to a method for manufacturing a dental restoration, comprising the steps of applying a powdered dental metal comprising composition to a refractory model mass, which powdered dental metal consist of at least three alloys each having a different solidus temperature, the difference between the successive solidus temperatures always ranging between 25 and 100.degree. C., heating the powdered dental material in such a manner that one porous mass is formed, and infiltrating the porous mass with a filler metal alloy in such a manner that the refractory model mass is provided with a homogenous metal coating.