43 results about "Mandibular arch" patented technology

A dental splint includes upper and lower appliances having cavities shaped to receive teeth on a patient's maxillary and mandibular arches, respectively; and a connection member adapted to fixedly secure the upper and lower appliances together.

The invention relates to a custom-fit implantable surgical guide (1) and an associated milling tool (4), which is positioned in straddling on the alveolar ridge (7) of a maxillary or mandible arch (2) and comprises at least one drilling barrel (11) for axially guiding said milling tool (4), wherein said barrel (11) is laterally open and at least one part of the internal surface thereof (17) and at least one part of the external surface of the milling tool (4) interact and axially maintain the entire milling tool (4) with respect to the barrel (11). Said invention makes it possible to carry out high precision osteotomies for lateral insertion dental implants.

The invention relates to a custom-fit implantable surgical guide (1) and an associated milling tool (4), which is positioned in straddling on the alveolar ridge (7) of a maxillary or mandible arch (2) and comprises at least one drilling barrel (11) for axially guiding said milling tool (4), wherein said barrel (11) is laterally open and at least one part of the internal surface thereof (17)and at least one part of the external surface of the milling tool (4) interact and axially maintain the entire milling tool (4) with respect to the barrel (11). Said invention makes it possible to carry out high precision osteotomies for lateral insertion dental implants.

A scanning system for carrying out 3D scanning of dental models in a scanning direction V including a holding device for a whole jaw model which spans an occlusal plane E over a line-shaped mandibular arch, a base, a swivel bearing on a swivel axis normal to the scanning direction V and a stage mounted for rotation on the swivel bearing relatively to the base, on which the dental model to be scanned can be mounted. The stage can be rotated through an angular range δ of at least 150° about the swivel axis, and the whole jaw model can be mounted such that said occlusal plane E is aligned parallel to said scanning direction V. An evaluation unit receives data from a detector to generate a 3D data set.

A dental splint includes upper and lower appliances having cavities shaped to receive teeth on a patient's maxillary and mandibular arches, respectively; and a connection member adapted to fixedly secure the upper and lower appliances together.

Device for activating mandibular growth, maxillary growth and mandibular advancement, said device comprising: a first rod (3) with a front end (9) and a rear end (10); a second rod (4) with a front end (11) and a rear end (12); said first (3) and second (4) rods being relatively rigid and having mutually different lengths; a first pivoting articulation (6) for connecting the front end (9) of the first rod (3) to a first dental arch of a person; a second pivoting articulation (8) for connecting the front end of the second rod (4) to the second dental arch of the person; a third pivoting articulation (7) interconnecting the rear ends (10, 12) of the rods (3, 4) and allowing the device to chnage from an open position to a closed position and thus follow the movement of opening and closing of the jaws, characterized in that said third pivoting articulation (7) is able to be connected to the dental arch carrying the shortest rod with the aid of elastic means (5) returning the device to the closed position, in such a way that said rods are able to induce a movement of the mandibular arch relative to the maxillary arch in the closed position of the jaws.

An intermaxillary fixation system is provided, including a bone anchorage screw having at least one of an elongated head with internal threading and an externally threaded screw extending from a head of the bone anchorage screw, a fixation system, and a rail bar. A method for the stabilization and fixation of maxillary and mandibular arches is also provided, including setting a plurality of bone anchorage screws to the maxillary and mandibular arch, each bone anchorage screw having a head, fixing one or more T-shaped bars to the bone anchorage screws, bending and connecting a rail bar to heads of the one or more T-shaped bars with orthodontic screws, and wrapping a connector between the heads of the bone anchorage screws located on the mandibular arch and the maxillary arch.

The invention discloses a pluggable gothic arch tracing system used for dental restoration and a method thereof. The pluggable gothic arch tracing system comprises an upper jaw arch plate and a lowerjaw arch plate, the upper jaw arch plate is in a U-shaped structure, and a T-shaped upper jaw tracing plate is embedded in an inner side of the upper jaw arch plate; the lower jaw arch plate is in a U-shaped structure, a handle is inserted at a front end of the lower jaw arch plate 3, a T-shaped lower jaw arch plate is embedded in the inner side of the lower jaw arch plate 3, and a tracing needleis connected with the lower jaw arch plate through screw thread. According to the tracing system, a front tooth zone tongue side avoidance groove is arranged at a front end of the upper jaw arch plate, a wax rim space is reserved, and the tracing system is in favor of recording and transferring fullness of a maxillary anterior region through wax addition or reduction during dental restoration forpatient. The handle is a pluggable type, is inserted at a channel section of the lower jaw arch plate while mold taking and facebow using, and the can be removed while the aesthetics information is recorded by wax rim. According to the invention, a fork and a bite silicone rubber are not used for facebow transfer, and an upper lip is not interfered while aesthetics information is transferred.

A method for displaying teeth of a patient, generates a three-dimensional model of the patient's teeth and displays the generated three-dimensional model. A displayed image shows a cross-sectional view of the teeth according to the position of a cutting plane extending through the three-dimensional model. The relative position of the cutting plane is adjustable according to an operator instruction. The orientation of the displayed cross-sectional view is determined by the position of the cutting plane.

The invention relates to a method for animating models of the mandibular and maxillary arches of a patient in a corrected intermaxillary relationship, comprising: providing three-dimensional numerical models (MD, MX) of the mandibular and maxillary arches of the patient; providing a recording of the mandibular motion of the patient, said recording comprising a plurality of relative positions of the mandible of the patient with respect to the maxilla; selecting, from said positions, a reference position (X) of the mandible with respect to the maxilla of the patient; - determining a target position (Y) for the mandible with respect to the maxilla, said target position defining a corrected intermaxillary relationship for the patient; determining a rigid transformation between the reference position (X) and the target position (Y); applying said rigid transformation (i) to the recording of the mandibular motion of the patient in order to animate the three-dimensional numerical models of the mandibular and maxillary arches, or (ii) to the three-dimensional numerical model of the mandible, the delivered recording of the mandibular motion being applied to the three-dimensional numerical models of the mandible and of the maxilla in order to animate said models.

The invention relates to a method for determining a mapping of the contacts and / or distances between the teeth of the maxillary arch and the mandibular arch of a patient, characterised in that it comprises the following steps:obtaining the mandibular kinematics recorded on the patient;obtaining surface meshes of the maxillary arch and the mandibular arch and registering said meshes relative to one another;creating a reduced mesh of at least one of said arches, comprising the selection, in the mesh of said arch, of the cells in which the nodes are located at a distance of less than 1 cm from the mesh of the opposite arch;creating, for each cell of said reduced mesh, a bounding box comprising a plurality of voxels surrounding said cell;using the mandibular kinematics, calculating a network of contacts comprising, for each voxel of the bounding box, information on the existence of a contact between said voxel and a node of the mesh of the opposite arch during a relative movement of the mandibular arch in relation to the maxillary arch.

The invention relates to a method for aligning non-radiographic virtual models of a mandibular arch and of a maxillary arch of an individual with a non-radiographic digital model of the face of said individual, characterized in that it comprises: fastening a mandibular marker rigidly to 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; digitizing at least one portion of the surface of the teeth or of a prosthetic device securely fastened to 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 record of said portions of the mandibular arch and of the marker in a given second frame of reference; on the basis of said record and of the virtual models of the mandibular arch and of 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 locating 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 locating the digital model of the face in the first frame of reference, so as to align the virtual models of the maxillary and mandibular arches with said digital model of the face.

A method for generating a mapping of dental occlusion generates a three-dimensional model of the patient's teeth (1a, 1b) according to acquired image data. The maxillary and mandibular arches are positioned in opposition in the generated model of the patient's teeth and a meal model (50) generated having characteristics of a foam material. A pressure field distribution for the generated meal model is calculated for one or more pairs of opposed teeth (1a, 1b) from the generated three-dimensional model of the patient's teeth. The calculated pressure field distribution (54) can be displayed.