Ivoclar Vivadent Ag

Michael Brotzge

Robert Grünenfelder

Johannes Lorünser

Philipp Kettner

Gottfried Rohner

Jörg Ebert

Ronny Watzke

Diethard Bertsch

Rudolf Jussel

Walter Pokorny

Werner Längle

Werner Kindle

Johannes Lorunser

The invention relates to a plausibility checking method for rapid prototyping devices, in particular for stereolithography devices. In this connection, input data () is checked which is present particularly in the form of graphics data and of which every file renders a layer. Every layer comprises a plurality of pixels. The component to be printed in the respective layer is produced based on output data by the rapid prototyping device. The input data of two consecutive layers is checked and the sum of all pixels to be exposed is determined for every layer. A signal () is output in particular as a warning signal () when the pixel sum of a following layer is larger than in the previous layer by a predetermined factor.

Plausibility checking method for additive manufacturing methods

The invention relates to a dental furnace comprising a firing hood equipped with a heating device that is movably supported for the opening and closing of the dental furnace relative to a base intended for receiving a dental restoration part, and further comprising a heat detection device that is directed towards an area above the base, in particular towards one or more dental restoration parts, and further comprising a control or regulating device for the dental furnace that is coupled to the heat detection device, wherein the heat detection device is configured as a thermal imaging camera () which is directed towards the area above the base while the firing hood () is partially or completely opened, and which feeds an at least two-dimensional image in the form of a matrix of the one or more inserted dental restoration parts () to the control or regulating device and/or to a muffle () that is intended for the generation of the dental restoration parts ().

Dental furnace

The invention relates to a dentel device for the treatment of a dental restoration part, comprising at least one operating program, a storage of the dental device and at least one detection device for at least one object. The detection device can detect data of the object and this data, in particular together with an operating program associated with the object, can be stored in a storage of the dental device or can be compared to the data of objects which have been stored in advance in the storage of the dental device. The dental device, depending on the comparison result of the data of a detected object with the data of objects which have been stored in advance in the storage of the dental device, starts the associated operating program or shows it for selection.

Dental device

The invention relates to a firing furnace or press furnace for dental restoration parts, having a control device for the control of the furnace on the basis of at least one firing/press program; a display device, at least for displaying operating instructions based on symbolic representations; an input device, at least for selecting a firing/press program; wherein the control device is configured to be able to switch the furnace after selection of a control program to a security mode in which it displays one or several operating instructions and in which the input of firing or press parameters of the control program and/or the selection of a firing or press program is disabled.

Firing furnace and press furnace

A dental color key having at least two different color patterns or samples with different tooth colors. The entire surface area of the color key () may be smaller than the buccal and/or labial surface area, that is to say the vestibular surface area of two teeth, and the color patterns or samples () are attached adjacent to one another and particularly mounted to one single tooth.

Dental color key

A process for manufacturing a dental restoration part as well as a dental furnace are provided in which the dental restoration part is produced on a foundation by means of applying at least two layers, wherein initial data, in particular three-dimensional data of the foundation, are stored in a memory device, and picture data, in particular three-dimensional data concerning the outer contour of the dental restoration part to be produced and the layers of the dental restoration part to be applied, are determined and in particular stored. It is provided that the dental restoration part is positioned at least partially during its production within the picture recording area of a picture recording device (), and that before finishing the dental restoration part () and upon the application of at least one layer, the latter is recorded at least with regards to the thickness of the layer and/or its color, is displayed in particular via a display device (). Furthermore, the layer recorded is compared with the picture data () at least regarding the thickness of the layer. An error signal is produced if the layer applied does not correspond to the predetermined layer in accordance with the picture data () regarding the thickness of the layer and/or the color and/or the other parameters.

Process for manufacturing a dental restoration part and a dental furnace for manufacturing the same

Display screen or a portion thereof having an animated graphical user interface

Shade guide

The invention relates to a dental color analyzing device comprising a housing, a computer device having a storage unit, and a display on which a reference object together with at least one tooth and/or a gingival area is represented, wherein at least one first image section that shows the reference object as well as at least one second image section that displays the tooth, a tooth region or a gingival area, may be detected with the aid of the computer device, characterized in that the reference object is mounted on a tooth and in particular is attached thereto and comprises a smaller size than the represented tooth, wherein the reference object is a dental color key comprising color samples that are arranged next to one another and that each represent a dental color, and in that the color of the second, in particular selectable image section, is comparable to the represented color samples with the aid of the computer device such that the color sample that matches the color of the second image section best, may be displayed on the display.

Dental color analyzing device and methof of use

A polymerization temperature test element is provided for a polymerization device of the type, in particular, for polymerizing dental products. The polymerization temperature test element includes a base element and a receipt region centrally disposed on the base element and operable to receive the mass to be polymerized. The energy source of the polymerization device irradiates the mass to be polymerized with one or both of light radiation and thermal radiation to effect polymerization of the mass and the base element and the receipt region are configured so as to be subjected to the respective light and thermal radiation emitted by the energy source. Accordingly, the polymerization temperature test element provides an indication, via color-temperature indicators which change color or brightness at discrete temperatures, that a target polymerization temperature has been reached during irradiation of the mass.

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Koblach, Austria

Michael Brotzge