Dentsply Sirona Inc.

Sirona Dental Systems Gmbh

Hans-Christian Schneider

Daniel Weiss

Peter Fornoff

Franz Basler

Thomas Hasenzahl

Oliver Nowarra

Peter Burger

Daniel Trautmann

Daniel Weiß

Sebastian Steger

Mathias Morgenroth

Helmut Seibert

Peter Faltin

A method of machining at least one dental restoration () from a workpiece () using one or more dental took (), including a step of defining, a target contour () of the dental restoration (); also including a step of predicting the deflection of the dental tool () during pre-machining through a model based on one or more machining parameters; a step of determining based on the prediction step one or more primary locations () at which the target contour () would have been damaged during pre-machining; a step of modifying the target contour () or the corresponding machining path by adding an oversize of material () substantially only at the primary locations () for preventing damage; and a step of pre-machining the workpiece () based on the modified target contour () or the corresponding modified machining path.

Method of machining a dental restoration with reduced contour falsification

A device for separating a deep-drawn jaw-spanning dental apparatus such as an aligner or a bite splint of thermoform film that includes: a separating element for thermally separating the deep-drawn thermoform film and simultaneously refining the separated deep-drawn thermoform film; a heating means for regulating the heating of the separating element so as to increase the temperature of the thermoform film substantially to at least its glass temperature; a support for supporting the deep-drawn thermoform film relatively movable with respect to the separating element; a moving mechanism for moving the separating element along a separation contour of the deep-drawn jaw-spanning dental apparatus relative to the support; and a control unit adapted to control the heating means and the moving mechanism based on the separation contour.

Device for separating a deep-drawn jaw-spanning dental apparatus of thermoform film

A dental machining system for manufacturing a dental restoration including: a dental tool machine () which has: a dental blank holder for holding at least one dental blank () relatively movably with respect to one or more dental tools (); one or more driving units () each for movably holding at least one dental tool () for machining the dental blank (), a control unit for controlling the dental blank holder and the driving units () based at least on a temporal trajectory of the dental tool () relative to the dental blank () and a spatial amount of material removal from the dental blank () along the temporal trajectory. The control unit executes a trained artificial intelligence algorithm.

Dental machining system for predicting the wear condition of a dental tool

A method of operating a stepper motor for use in a dental tool machine for removing material from a dental blank, the method including: a step of adapting torque reserves of the stepper motor at operating points to net load moments respectively. The method includes a first step of predicting, through simulation, the net load moments beforehand; a second step of predicting, through simulation, the supply current to be supplied to the stepper motor for setting up the torque reserves that correspond to the predicted net load moments respectively; and a step of driving the stepper motor based on the predicted supply current.

Method of operating a stepper motor in a dental tool machine

The present invention relates to a method for the design and manufacture of a dental component with a surface, wherein a 3D model of the dental component is designed by means of a CAD unit and the dental component is manufactured by a CAM unit on the basis of the 3D model. In order to provide a method which significantly shortens the time required for the design and manufacture of a dental component, so that the length of the dental session at which the patient must be present is shortened, it is inventively proposed that the 3D model is manufactured in at least one first design step, in which a first 3D submodel is designed with at least one first surface section, and a second design step in which a second 3D submodel is designed with at least one second surface section, wherein the first design step is completed before the second design step and the CAM unit begins the manufacture of the first surface section of the dental component based on the first 3D submodel before the design of the second 3D submodel is completed.

Method for the design and manufacture of a dental component

Growing community of inventors

Einhausen, Germany

Hans-Christian Schneider