A dental prosthesis is provided, manufactured from a monobloc or multibloc prosthesis blank (10), which is composed of a gum-colored material (14) and a tooth-colored material (12), which materials (12, 14) are bonded to each other by bonding, polymerization and/or one-piece manufacture. The boundary surface (16) between the materials is wave-shaped comprising alternating grooves (22) and ribs (24) in the course of the dental arch, and radial in an oral-vestibular direction in the region of the anterior teeth (33) to be created. The boundary surface (16), at least in the region of the molars (26)—again as viewed in the oral vestibular direction—has parallel grooves (22) and ribs (24) forming troughs and crests of the waveform, or grooves (22) and ribs (24) such that they extend in deviation from parallel by at most 10 degrees, in particular at most 5 degrees, at least in the region of the molars (26).

A system can be configured to record a position and orientation of a dental component. The system can include a coping and a replica. The coping can include an anti/rotational feature that is configured to mate with an anti-rotational feature of a dental component. The coping can also include an orientation feature that is configured to convey the orientation of the dental component. The replica can include a first anti-rotational feature that corresponds to the anti-rotational feature of the dental component. The replica can also include a second anti-rotational feature that does not correspond to the anti-rotational feature of the dental component.

In one aspect, a method for manufacturing a glazed dental prosthesis includes at least the steps of: a) providing a dental prosthesis body; b) position sensitive application of a predetermined amount of a glaze composition to at least a part of the dental prosthesis body surface, wherein the glaze comprises a heat sensitive coloring indicator and wherein this step is performed one or more times; c) controlling the applied glaze amount at least at one position of the glazed dental prosthesis body surface by assessing the color intensity at that position; and d) subjecting the coated dental body to a heat treatment to form the glazed dental prosthesis, wherein the temperature in the heat treatment is larger or equal to the de-composition temperature of the heat sensitive color indicator, wherein at least 90 mol-% of the coloring indicator are transformed into the colorless leuko-form.

A forming apparatus (100) for a dental object (101), having a forming means (127) for producing a predetermined spatial shape of the dental object (101); and a radiation source (105) for emitting radiation having a wavelength shorter than 350 nm onto the material (129) of the dental object (101).

An oven (100) for heating a dental object (101), having a chamber (103) for receiving the dental object (101); a radiation source (105) for emitting radiation having a wavelength smaller than 350 nm into the chamber (103); and heating means (113) for heating the dental object (101) in the chamber (103).

The present disclosure relates to a dental cutting zirconia blank having high relative density for preparing a dental restoration. More specifically, the present disclosure relates to a dental cutting zirconia blank which consists of a zirconia ceramics used for the cutting with the CAD/CAM system in the dental field, a semi-sinter zirconia blank (pre-sintered body) of which has high relative density, and which can provide a prosthesis device having high aesthetics after sintering. There is provided a dental cutting zirconia blank wherein the dental cutting zirconia blank has at least one layer consisting of zirconia powder containing 4 to 15 mol % of yttria or erbium oxide as a stabilizer, a relationship among pre-sintering density, final-sintering density and relative density satisfies the following relation:
54≤Relative density(%)={(Pre-sintering density)/(Perfect-sintering density)}×100≤70.

A method for directly printing orthodontic and dental appliances on the teeth of a patient. The tooth is scanned with a scanner which is communicated with a computer controller configured to recognize the anatomy of the tooth. The surface of a tooth of the patient is then prepared in order to receive the type of appliance designated for the patient. Using image data from the print head, the computer controller prepares a three-dimensional blueprint or design of an appropriate orthodontic or dental appliance. The computer controller controls the type and amount of material that is distributed through the print head only when the print head passes over the recognized anatomy so as to directly print the corresponding appliance onto the tooth layer by layer as the print head makes successive passes over the surface of the tooth.

The invention relates to a computer-implemented method for providing a template for a casting matrix configured for casting one or more artificial gingiva parts of a removable denture. The casting matrix comprises one or more recesses. Each of the recesses has a 3D geometric form, which is a negative of a 3D geometric form of a section of the removable denture with one of the artificial gingiva parts to be casted.

A zirconia sintered body comprises zirconia and multiple different areas, including at least one upper area and at least one lower area having a different chemical composition and a different strength. The sintered body has a translucency and a strength with an inverse relationship. The translucency increases in one direction across the multiple different areas and the strength decreasing in the same direction across the multiple different areas. At least part of the sintered body has a total light transmittance of at least 35% and less than 53% to light with a wavelength at least at a point between 400 nm and 600 nm, and at least 51% and less than 57% to light with a wavelength at least at a point between 600 nm and 800 nm, at a thickness of 0.6 mm. At least a part of the sintered body has a strength of at least 925 Mpa.

The invention relates to a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated.