The present invention relates to a method of determining layer thicknesses (t) of a three-dimensional model (1) for generation with an additive manufacturing apparatus, the method comprising: a step of determining the layer thicknesses (t) according to an adaptive slicing algorithm in which the thickness of a layer (2) is calculated through a relation based on the inclination of the normal vectors (n) of the surface elements (s) of the 3D model (1) which at least partly enclose the layer (2) from a horizontal direction (x; y) the method being characterized by further comprising: a step of selectively imposing on at least one surface element (s) of the 3D model (1) a precision requirement out of one or more selectable different precision requirements which respectively differently alter in the determination step the relation with respect to the inclination of the normal vector (n) of the said at least one surface element (s) which allows, through the altered relation, the layer thickness (t) to obtain a value smaller or larger than the layer thickness (t) determined through the unaltered relation.

Disclosed herein are apparatuses and methods for 3D data generation for tooth prosthetic crown preparation.

A reinforcement structure for a crown and root tooth restoration includes: a plurality of reinforcement pins having diameters ranging from 0.1 mm to 0.5 mm, an etching canal facilitating access to an infected apex, in the crown and root restoration, a joining element configured to group the plurality of reinforcement pins together so as to form a bundle of pins, the joining element partially covering the length of the reinforcement pins.

A computer-implemented method of generating a reduction coping includes receiving a digital model comprising a virtual preparation tooth, determining one or more virtual reduction regions on the virtual preparation tooth, and generating a virtual reduction coping comprising one or more exposed regions corresponding to the one or more virtual reduction regions. A method of generating a physical reduction coping includes receiving a 3D digital model of a virtual reduction coping and performing additive manufacturing to generate a physical reduction coping from the virtual reduction coping.

Disclosed are a surgical guide plate and a preparation method therefor. The preparation method comprises the following steps: a) bonding a radiation-blocking material onto an oral mucosa, and putting on an occlusal rim; b) carrying out CBCT photographing to acquire CBCT data carrying information of the radiation-blocking material; c) acquiring STL data of an oral cavity surface; d) matching the CBCT data with the STL data; e) loading occlusal rim data; f) carrying out intelligent tooth arrangement; and g) designing an implant, and generating a surgical guide plate. By means of the preparation method, the level of comfort of a patient can be increased, preparatory processes are reduced, a radiation guide plate does not need to be made, the number of return visits is reduced, the clinical medical cost is reduced, the precision of a surgical guide plate is increased, the software design time is reduced, and the treatment experience is improved.

The invention relates to a projector construction (86) arranged both structurally and operatively integrated into a dental operating light (8) so as to be a part of the dental operating light (8) and wherein the dental operating light (8) illuminates a first area on a surface whereas the projector construction (86) is configured to project graphics, pictures and/or video in essentially the same direction as the operating light (8) on the surface, on a second area.

A robotic system and method involve a fiducial marker engaged with a maxillofacial anatomy, and an end effector at a distal end of an articulating arm member. The end effector receives a dental element comprising a prosthetic device, a surgical guide, or an orthognathic element, in a predetermined spatial relationship therewith. A controller device directly communicates with the fiducial marker, the articulating arm member, and the end effector, to determine an end effector disposition relative to the fiducial marker during end effector movement according to a virtual procedure plan for placing the dental element in aligned relation to the maxillofacial anatomy, and directs the articulating arm member to physically control allowable movement of the end effector, directly relative to the disposition of the end effector with respect to the fiducial marker and according to the virtual procedure plan, to place the dental element for securement to the maxillofacial anatomy.

An apparatus assisting in dental procedure, comprising: a body adapted to be received with an oral cavity; an anchoring means for securing the body within the oral cavity such that it at least partially surrounds one or more teeth; a dental device located within the body and adapted to move in a plurality of planes relative to the one or more teeth; and a controller for controlling the dental device to move into a suitable position relative to the one or more teeth and once located in position carry out work on or about the one or more teeth.

A dental overlay device includes a base, connecting strut, and veneer holder. The base has a curvature in the form of an arch of a patient and defines a curved axis. The connecting strut has a first end attached to the base and a second end and extends in a generally orthogonal direction to the curved axis. The veneer holder has first and second ends and extends in a transverse direction to the direction the connecting strut extends. The second end of the connecting strut is attached to the veneer holder. A dental overlay device and veneer combination includes a first veneer and a second veneer prepared for mounting onto the plurality of teeth. Floss is configured for passing between the first veneer and the second veneer when the dental overlay device is mounted onto the plurality of teeth.

A system including a sensored ablation probe tip and a virtual stent, said sensored ablation probe tip for use in a tooth bud ablation procedure that results in tooth agenesis, said sensored ablation probe tip for use with an ablation probe unit. A system including a sensored ablation probe tip and a stent, said sensored ablation probe tip for use in a tooth bud ablation procedure that results in tooth agenesis, said sensored ablation probe tip for use with an ablation probe unit.