Disclosed is an apparatus for tracking and recording the movements of a person's jaw including a reference system with two parts to be fixed to the respective dental arches, an infra-red light projector, a video camera sensitive to infra-red light and a computerized system connected to the projector and to the video camera, wherein the projector projects patterns of points of light onto the face and onto the reference system and wherein the computerized system includes a processing unit configured to process the images taken by the video camera to calculate, for each of these, the distance of at least the points of light that are on the surface of the markers with respect to a pre-determined point with known coordinates, by way of a comparison of the image of the projected pattern with an image of a reference pattern.

Disclosed is an apparatus for tracking and recording the movements of a person's jaw including a reference system with two parts to be fixed to the respective dental arches, an infra-red light projector, a video camera sensitive to infra-red light and a computerized system connected to the projector and to the video camera, wherein the projector projects patterns of points of light onto the face and onto the reference system and wherein the computerized system includes a processing unit configured to process the images taken by the video camera to calculate, for each of these, the distance of at least the points of light that are on the surface of the markers with respect to a pre-determined point with known coordinates, by way of a comparison of the image of the projected pattern with an image of a reference pattern.

The invention relates to a system for detecting the relative movement of body parts, the system having at least two subsystems, i.e. a first subsystem and a second subsystem, wherein the first subsystem is designed to be fastened to a first body part, for example the upper jaw, or a body region rigidly connected to the upper jaw, such as the skull, and the second subsystem is designed to be fastened to a second body part, for example the lower jaw, wherein the first body part and the second body part are movable relative to each other, and wherein the system comprises a movement sensor system and a calibration sensor system, wherein the movement sensor system is designed to detect the relative movement or relative positions of the first body part and the second body part across a movement range, for example by generating data from which the movement trajectory or course of the relative movement of the first body part and of the second body part can be obtained or is obtained, and the calibration sensor system is designed to determine the relative position of the first body part relative to the second body part if (for example only if and/or always if) the first body part and the second body part are arranged relative to each other, preferably close to each other, in a calibration region.

The invention relates to a method for registering non-radiographic virtual models of a mandibular arch and a maxillary arch of an individual with a non-radiographic digital model of the face of said individual, comprising: fastening a mandibular marker rigidly on the mandibular arch of the individual, said mandibular marker defining a first frame of reference, providing a non-radiographic virtual model of the mandibular arch and a non-radiographic virtual model of the maxillary arch, digitising at least one portion of the surface of the teeth or a prosthetic device integral with said arch and at least one rigid portion of said marker by means of an intra or extra-oral camera, so as to produce a digital recording of said portions of the mandibular arch and the marker in a same second frame of reference, from said recording and the virtual models of the mandibular arch and the mandibular marker, matching the digital model of the mandibular marker with the marker, and the virtual model of the mandibular arch with said arch, and localizing the virtual model of the mandibular arch in the first frame of reference, acquiring a non-radiographic digital model of the face of the patient, and localizing the digital model of the face in the first frame of reference, so as to register the virtual models of the maxillary and mandibular arches with said digital model of the face.

Apparatus and methods for providing three-dimensional printed oral stents are provided for head and neck radiotherapy. Movement of the jaw of the patient is simulated via a computer processor. Simulating movement of the jaw of the patient comprises rotating and translating a mandible of the jaw. A digital negative impression is transformed into a digital oral stent by adding support structures to the digital negative impression. The support structures facilitate three-dimensional (3D) printing of the patient-specific oral stent.

The invention relates to an upper jaw contact element for contact with a human upper jaw, which contact element is formed as a dental arch-shaped upper jaw bite fork (5) which has receiving portions on at least the open end portions that are configured to reversibly receive upper jaw crowns, in particular with the aid of impression material, in a manner as to be stable during manipulation, and which can be connected to at least one jaw relation element (6, 7, 8, 500) in the area of vertex of the arch.

The invention relates to an upper jaw contact element for contact with a human upper jaw, which contact element is formed as a dental arch-shaped upper jaw bite fork (5) which has receiving portions on at least the open end portions that are configured to reversibly receive upper jaw crowns, in particular with the aid of impression material, in a manner as to be stable during manipulation, and which can be connected to at least one jaw relation element (6, 7, 8, 500) in the area of vertex of the arch.

The invention relates to a method for producing a dental splint, in particular for the treatment of craniomandibular dysfunction or for the correction of tooth misalignment, comprising a flat body made of plastics, composite and/or elastomer and having a lower face that is provided with a shape configuration according to at least portions of the dental surface profile of a patient's lower jaw, and further having an upper face that is provided with a shape configuration according to at least portions of the dental surface profile of the patient's upper jaw, the shape configuration being laterally and/or frontally-dorsally and/or vertically offset by a defined amount on the upper face relative to a position relation of optimum occlusion with respect to the shape configuration on the lower face.

An orthopedic appliance including: a base plate, a middle section, a left section, a right section, a dental clasp, a labial bow, an orthodontic spring and an expansion screw. The base plate includes a middle section having a top-front face, a bottom-front face adjacent to the top-front face, a bottom-rear face adjacent to the bottom-front face, and a rear face adjacent to each of the bottom-rear face and the top-front face, wherein the bottom front face includes a ledge which is substantially orthogonal to the primary plane such that the ledge may engage the lower front teeth of a wearer of the appliance.

A mode of analysis of a pattern of interdependent movements of the upper jaw teeth and of the lower jaw teeth by bidirectional synchronising of the digital movement image acquisition technology with haptic technology in a digital analysis of chewing, on the feedback principle, using the Motion Capture technology, based on the identification of the position of preferably optical markers and recording their movements in camera systems, wherein the cameras to be preferably integrated into, at least, two systems, one on the right and the other on the left side of the mouth/face, or as one system to be centrally positioned, opposite to the centre line of the face, wherein each of the systems has at least one, preferably three, cameras including at least one and preferably two monochromatic or colour cameras of a minimum resolution of 2.3 Mpx.