A method for generating a prosthesis or partial prosthesis based on digital data using a plurality of teeth (10) and a prosthesis base (12) to be manufactured, characterized in that the generatively or subtractively generated teeth (10) and/or the generatively or subtractively generated prosthesis base (12) are manufactured having oversize, apart from regions of the teeth (10) and the prosthesis base (12) on which the teeth (10) and the prosthesis base (12) abut against each another and/or are joined or connected to each other, and in that the teeth (10) and/or the prosthesis base (12) are subsequently brought to the desired original dimension, in particular milled, with at least partial removal of the oversize (30, 32).

A tool for forming a dental restoration includes a mold body configured to provide a customized fit with at least one tooth of a patient. In some examples, the mold body defines an aperture configured to align with a portion of a surface of a tooth. The aperture is sufficiently large to allow placement and flow of restorative material over the desired portion of the surface of the tooth to be restored. The mold body is configured to combine with the at least one tooth of the patient to define a mold cavity encompassing at least a portion of desired tooth structure of the tooth to be restored.

[Problem]

A technique for imparting high translucency which is similar to an enamel of a natural tooth to a zirconia sintered body, has been required.

[Solution]

To provide a zirconia mill blank for dental cutting and machining, containing, an yttrium compound and an indium compound as stabilizers, wherein, an amount of the yttrium compound is within a range of 3.0 mol % to 6.0 mol % in terms of oxide, an amount of the indium compound is within a range of 0.2 mol % to 3.0 mol % in terms of oxide, and a total amount of the yttrium compound and the indium compound is within a range of 5.5 mol % to 7.0 mol % in terms of oxide.

A ceramic body for dental prosthesis can suppress a variation in quality in the sole ceramic body for dental prosthesis due to expansion of its diameter. The ceramic body for dental prosthesis is made of a ceramic material, is shaped to have a circular planar shape and a disk-like external shape, and has a diameter of 50 mm or more. The method for manufacturing this ceramic body for dental prosthesis includes: preparing a ceramic material; shaping the ceramic material by press shaping or by a machine tool; temporarily sintering the ceramic material at a temperature from a sintering temperature that provides theoretical density −700° C. or more to the sintering temperature −100° C. or less; and shaping the ceramic material to have a circular planar shape and a disk-like external shape so as to prepare the ceramic body for dental prosthesis having a diameter of 50 mm or more.

A blank for milling or grinding a dental article, the blank having a plate-shaped body adapted to be received in a blank holder of a CAM system, which plate-shaped body comprises one or more ceramic or glass ceramic blank portions and two or more through holes, wherein each through hole is contiguous with at least one of the ceramic or glass ceramic blank portions for receiving a working end of a milling or grinding tool of the CAM system.

A blank for milling or grinding a dental article, the blank having a plate-shaped body adapted to be received in a blank holder of a CAM system, which plate-shaped body comprises one or more ceramic or glass ceramic blank portions and two or more through holes, wherein each through hole is contiguous with at least one of the ceramic or glass ceramic blank portions for receiving a working end of a milling or grinding tool of the CAM system.

An apparatus for three-dimensional laminating and coloring a dental ceramic crown includes a slurry layering module, a coloring module, a light curing module and a main controller. The main controller controls the slurry layering module to lay a slurry from a slurry tank to form a slurry layer, controls the coloring module to color the slurry layer with the colorant in a color tank to form a colorant layer according to a plurality of coloring parameter data, controls the light curing module to cure the slurry layer according to a plurality of laminated graphics. The apparatus may color each slurry layer, and the color can be easily changed as desired. The overall coloring effect of the dental ceramic crown is natural with good light transmittance, and the color is saturated without any blooming formed between the colored layers.

Method for providing a natural colour and optical depth to a dental object comprising the steps: providing a framework of the dental object, taking an object colour picture of an adjacent dental object or reference dental object, and uploading the object colour picture into a computing device, calibrating and adjusting the uploaded object colour picture into a target object colour picture in a computing device, (pre)determining the thickness profile of the enamel material to be applied on the framework, correcting in a computing device of the digital picture elements of the target object colour picture for the thickness profile of the enamel material to be applied on the position of the digital picture elements and providing a print colour picture of the corrected digital picture elements, printing the print colour picture as a print layer on the framework, applying the enamel material in the predetermined profile-thickness upon the print layer upon the framework.

A coloring device for coloring a dental prosthesis by an inkjet method, the dental prosthesis coloring device includes an inkjet head having a nozzle that ejects ink droplets; a holding unit that holds the prosthesis; a drive unit that moves the inkjet head or the holding unit in a predetermined direction in an XYZ orthogonal coordinate system; and a control unit that controls the inkjet head and the drive unit, wherein the control unit is configured to control the inkjet head and the drive unit based on predetermined coloring data and three-dimensional data of the prosthesis.

A device for progressively building up an object from a light hardenable material. The device has a perforated build platform for the object. The build platform forms a build surface that faces a light source. The build platform and the light source are positionable relative to each other by computer control. The device is further configured for supplying the light hardenable material through the perforation of the build platform for building up the object. The invention enables the making of colored objects by stereolithography.