Ivoclar Vivadent Ag

Shade Analyzing Technologies, Inc.

Harald Kerschbaumer

Volker Rheinberger

Christian Ritzberger

Wolfram Höland

Marcel Schweiger

Gottfried Rohner

Walter Pokorny

Robert Kruse

Graham Pye

Elke Apel

Frank Rothbrust

Konrad Hagenbuch

Norbert Moszner

Elke Signer-Apel

Clemens Andreas Häfele

Armin Ospelt

Thomas Baaske

Andreas Facher

Ricardo Dellagiacomo

Tobias Specht

Oliver Voigt

Martin Bertagnolli

Karl Lanbacher

Konrad Gurschler

Ricardo Dellagiacoma

Martin Mitterhofer

Michael Mueller

Volker M Rheinberger

Dr Volker Rheinberger

Dr Robert Kruse

Michael MÜLLER

Clemens HÄFELE

The invention relates to a computer program for specifying a material color of a dental restoration for which the desired tooth color is entered as a target tooth color () by the user, said target tooth color being the tooth color of a neighboring tooth, wherein upon specification of the material color of the dental restoration starting from the target tooth color () the material color of the dental restoration material is changed based on parameters such as the color of a stump and/or an abutment, the layer thickness of the dental restoration, the type of the dental restoration as well as the processing technique, wherein the specification of the material color of the dental restoration is controlled by the computer program, and wherein, once a parameter is selected, the next parameter is offered automatically, wherein the selection is limited based on parameters which are dependent on one another, such as the layer thickness, the restoration type, that is to say the indication, and the material.

Method for specifying a material color of a dental restoration

A partial dental arch is provided with dentin material and with cutting material and a boundary area therebetween. It includes a primary-position tooth region and additional tooth regions which are arranged more distally. A wavy structure of the boundary area is provided whose amplitude&#x2014;when viewed in the distal direction&#x2014;decreases in at least one section of the mesial-distal and/or occlusal-gingival extension, in particular with regard to the occlusal-gingival direction.

Partial dental arch and method for manufacturing a partial arch

Monochromatic dental shaped body, which has an opacity of from 70 to 78%, and a process for its production.

Monochromatic dental shaped article and blank for making dental restorations

The present invention relates to a multi-colored shaped body having layers arranged on top of one another for producing dental restorations, a process for its production and its use for the manufacture of dental restorations.

Multi-colored shaped body

The invention relates to a method () for producing color elements of a shade guide. To this end, color values of known color elements () of shade guides () with similar lightness values, hues and chromata are initially ascertained. In another method step, the color values of each new color element are determined while increasing a color distance () between the lightness values, hues and chromata of the previously ascertained color values.

Method and apparatus for producing a new shade guide having new color values from known color elements

The invention relates to compositions based on ZrO, and single- and multi-coloured blanks made from oxide ceramics, and a process for their preparation, in which

Process for the preparation of coloured blanks and dental shaped parts

The invention relates to compositions based on ZrO, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations.

Process for the preparation of colored blanks and dental shaped parts

The present invention relates to an inorganic dental powder, coated with at least one layer comprising inorganic and/or organic substances or consisting thereof, and to a process for its preparation.

Coated dental powders

A tooth shade scan system is provided that identifies tooth shades for a patient's tooth. An electronic database of tooth shade information for a shade guide may be stored. The database may include shade information based on tooth regions (e.g., the incisal, central, and cervical). A system operator may be shown an image of a patient's tooth on display equipment such as a computer monitor. An application running on the system may display dividers that the operator can manipulate to divide the image of the patient's tooth into regions. The regions may correspond to regions for which specific tooth shade information is available in the database. Values representative of a limited number of color characteristics for a region as a whole may be determined from the image. Corresponding categories of color characteristics may exist in the database, which is then used to identify tooth shades by region for the patient's tooth.

Tooth shade scan system and method

An intra-oral camera for producing an axially aligned picture of an intra-oral item of interest permits a rapid taking of pictures, whereby burdensome usage requirements are avoided without, however, suffering any diminishment in the quality of the picture that is taken. A computer-controlled picture taking positioning of the intra-oral camera properly positions the camera for taking pictures of objects of interest. The proper picture taking position of the camera ensures that the picture of an intra-oral object or an area of interest such as, for example, a tooth of a patient, is taken in the desired size, at the desired angle, and at the desired location.

Intra-oral camera and a method for using same

A light analyzer with a first light source configured and disposed for irradiating with a first light an object disposed at an object location. A second light source is configured and disposed for irradiating the object with a second light that is preferably polarized along a first axis. A light receiving element is configured and disposed for receiving the first and second light reflected from the object and comprising a sensing device that is configured for sensing and producing an image corresponding to the reflected light. The light receiving element preferably comprises a polarizing filter configured for polarizing the reflected second light along a second axis at an angle to the first axis for reducing glare and reflection.

Color analyzing apparatus with polarized light source

A dental camera and a mouthpiece attachment thereon. The camera has a light source and a light receiving element configured for receiving reflected light and producing an image based on the received light. The mouthpiece is mountable to the housing of the camera and is configured for contacting a patient's mouth for positioning the camera with respect to at least a portion of the mouth. The mouthpiece has a light channel associated with the light source for permitting the emitted light to reflect off a tooth in a patient's mouth and permitting the reflected light to travel into the receiving element. A wing extends radially from the light channel and is configured and dimensioned for placement between a lip and teeth of a patient for substantially blocking light from entering the light channel from outside the wing. A display on the housing is associated with the receiving element for displaying the image. A sound receiving element on the housing allows a dentist to record voice comments and store these in connection with the images.

Dental camera with mouthpiece

In a shade determination apparatus for teeth and dental restorations, a set of reference templates for comparing to a patient's tooth is provided. Based on the coloration of the reference template, the shade of a tooth or of a restoration to be employed can be determined. The reference templates are produced in a layer arrangement, taking into consideration layer thickness, material selection, or both, that corresponds to the tooth or the dental restoration to be employed. A storage apparatus stores the coloration of the reference templates, and the layering of the tooth or of the dental restoration can be matched and determined based on partial images from an image of the patient's tooth.

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Klaus, Austria

Harald Kerschbaumer