Dentsply Sirona Inc.

Sirona Dental Systems Gmbh

Daniel Weiss

Hans-Christian Schneider

Peter Fornoff

Franz Basler

Oliver Nowarra

Christian Stahl

Sebastian Steger

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 method of manufacturing a dental restoration including a construction step (S) of preparing construction data for a dental tool machine for machining the dental restoration from a workpiece. The construction data defines at least the geometry of the dental restoration within the workpiece. The method includes a starting step (S) of starting machining of the dental restoration from the workpiece in accordance with the construction data. The method also includes a preparing step (S) of starting preparing, before termination of the construction step (S), the dental tool machine at least through equipping it with all the consumables essential for starting the starting step (S), and completing preparing the dental tool machine before start of the starting step (S).

Method of manufacturing a dental restoration

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

The present invention relates to a method of determining layer thicknesses of a three-dimensional model for generation with an additive manufacturing apparatus. The method includes: a step of determining the layer thicknesses according to an adaptive slicing algorithm in which the thickness of a layer is calculated through a relation based on the inclination of the normal vectors of the surface elements of the 3D model partly enclose the layer from a horizontal direction (x;y).

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Heddesheim, Germany

Daniel Weiss