Abstract: A manufacturing device (100) for a dental restoration (200), including a tool (101) for machining a blank (201); a detector (103) for detecting a spindle current of a turning spindle (117); and a calculator (105) for calculating wear of the tool (101) based on the spindle current.

Abstract: A manufacturing method for a dental object, including the steps of generating (S101) a digital dental object in a coordinate system describing a shape of the dental object to be manufactured; rotating (S102) the spatial orientation of the digital dental object in the coordinate system based on a digital reference object in the coordinate system; and manufacturing (S103) the dental object based on the digital dental object with the rotated spatial orientation.

Abstract: A recognition method for a dental object, including the steps of providing (S101) a digital dental object in a coordinate system describing a shape of the dental object to be manufactured; and automatically assigning (S102) the digital dental object to a predetermined class based on the shape by a self-learning algorithm.

Abstract: A method for determining a tooth colour providing an evaluation device having an iterative learning algorithm using CNNs which captures and evaluates images under different light conditions and capture angles and learns the assignment to the applicable pattern tooth colour. In an evaluation step, a capture device is provided with which an image of an auxiliary body with a previously known pattern tooth colour is captured together with at least one tooth. The capture device acquires at least two images of the combination of the tooth to be determined and the auxiliary body from different capture angles and forwards them to the evaluation device. The evaluation device, based on the assignment learned to the applicable sample tooth colour, evaluates the captured images and outputs the tooth colour of the tooth to be determined according to a reference value, such as a common tooth key, e.g. A1, B2, etc.