9 results about "Maxillary Bones" patented technology

The utility model discloses a complete denture teaching aid. An upper jaw bone and a zygomatic arch are integrally connected, and the upper jaw bone and a lower jaw bone are oppositely arranged at intervals; the upper false tooth is detachably connected with the upper jawbone, and the lower false tooth is detachably connected with the lower jawbone; the two telescopic pieces are fixedly connected to the side portion of the zygomatic arch and the side portion of the mandible respectively, and the fixed ends of the two telescopic pieces are connected to the periphery of the outer side of the zygomatic arch and the top of the outer side of the mandible respectively. The adjusting parts are arranged among the corresponding telescopic parts, the zygomatic arch and the mandible in a suspended mode, and the adjusting parts are fixedly connected with the movable ends of the corresponding telescopic parts respectively. The upper jawbone is integrally connected with the zygomatic arch and is arranged opposite to the lower jawbone at an interval, and the upper jawbone and the lower jawbone in a real oral cavity are simulated. The upper false tooth and the lower false tooth are detachably connected to the upper jawbone and the lower jawbone respectively and are used for simulating and replacing missing teeth. The stretching length and angle of the telescopic piece are controlled through the adjusting piece, and the relative distance and position relation between the maxilla and the mandible are adjusted, so that the alignment process of the maxilla and the mandible is displayed in real time.

According to the design and manufacturing method of the orthodontic postoperative intermaxillary traction device based on the invisible orthodontic device, CT scanning is conducted on a patient, craniomaxillofacial and tooth three-dimensional data are collected, and preparation is made for obtaining three-dimensional virtual tooth data of the patient through manufacturing of an anhydrite tooth model; data of a patient are imported into cranio-maxillofacial surgical operation planning software, a cranio-jaw virtual model of the patient is established, a manufactured anhydrite tooth model is subjected to three-dimensional scanning, dentition data are obtained, a maxillary tooth bone section is moved to a target position through a simulated operation on the virtual cranio-jaw model, and the patient is subjected to cranio-maxillofacial surgical operation planning software. And then determining a target position of a mandibular tooth bone section based on a final occlusion relationship, importing dentition data of the patient into three-dimensional virtual design software, performing Boolean operation, and manufacturing a traction device by using a three-dimensional printing technology. According to the device, assistance of methods such as a dental arch splint and an intermaxillary traction nail is not needed, intermaxillary elastic traction can be carried out after an invisible orthodontic patient completes a orthodontic operation, and it is ensured that the occlusion relation after the orthodontic operation meets the requirement.

The method for creating a digital 3D model of a patient's dentition according to the present invention comprises, in a computing unit, generating a digital 3D model of a plurality of dentition variations, each of which comprises a combination of a digital 3D model of the patient's upper jaw and a digital 3D model of the patient's lower jaw, the plurality of dentition variations differing from one another in the relative positioning of the upper and lower jaws, respectively: - a digital 3D model of the patient's maxilla is combined with a digital 3D model of the mandible such that the maxilla and mandible rest on top of each other at several contact points without any spatial overlap of parts of the maxilla and mandible; - The contact surfaces between the upper and lower jaws are determined, This results in an optimized denture variation being selected for the 3D model of the denture, taking into account the contact surfaces.

A method for creating a digital 3D model of a patient's dentition, according to the invention, provides that in a computing unit for a plurality of dentition variants, each comprising a combination of a digital 3D model of the upper jaw and a digital 3D model of the lower jaw of the patient, which differ from each other in the relative positioning of the upper and lower jaws, respectively:the digital 3D model of the upper jaw is combined with the digital 3D model of the patient's lower jaw in such a way that the upper and lower jaws rest on each other at a number of contact points without any spatial overlap of parts of the upper and lower jaws, andthe contact surface between the upper and lower jaw is determined, whereby an optimized denture variant is selected as a 3D model of the denture, taking into account the contact surface.

In CT visualization software, zones of the right and left temporomandibular joints (TMJs) are visualized sequentially. In a frontal plane, each of the condylar processes of the TMJs are delimited into sections. In a sagittal plane, separate 3D contours of the fossae and the condyles of the TMJs are created. The contours of the condyles are combined with a 3D model of the mandibular teeth, and a 3D model of the mandible with the teeth and the condylar processes is obtained. The contours of the fossae are combined with a 3D model of the maxillary teeth, and a 3D model of the maxilla with the teeth and the contours of the glenoid fossae is obtained. The 3D scene objects obtained are distributed according to side and identification code, and precise tracking of the movement of the condyles and the fossae of the TMJs during movement of the mandible is provided.

An extraoral orthopedic device (1) for the direct protraction of the maxilla and the direct or indirect protraction of the mandible, comprising: two metallic girders, one mouth girder (4), which is coupled through traction means (5) with an intraoral mechanism (6) and one connecting girder (3), which couples the said mouth girder (4) with a skeletal support wreath (2), placed and supported on the neurocranium (9) by means of its precision to the anatomy of it and the two elastic fixation straps (7) passing around the shoulders and through the axillae (8), wherein a) said skeletal support wreath (2), individually designed using the 3D digital imprint of a person's head and a computer, comprises first means of adjustment and support (12, 13, 14, 15) in order to ensure the optimal placement of the said connecting girder (3) and first means of support (17) aiming at its fixation to the neurocranium (9) by means of the straps (7), b) the said mouth girder (4) comprises first means of adjustment (25) and support (21, 22, 24) aiming at its ergonomic placement into the said connecting girder (3), thus ensuring optimal direction of the traction means (5) individualized to each person.

The invention relates to a maxilla repositioning implant (1) for three-dimensional precise alignment of a maxilla displacing portion (5) relative to a remaining maxilla portion (3) that is fixed to the skull, wherein the maxilla repositioning implant (1) comprises a base (2), which has at least one plate (7) in which screw holes (10) are provided, wherein a portion of the material of the plate (7) defines, as a rim (11), a respective screw hole (10) that is provided for receiving a bone screw (17) in order to ensure fastening, via the bone screw (17) to be inserted into the respective screw hole (10), to the remaining maxilla portion (3) that is fixed to the skull, wherein the maxilla repositioning implant (1) also comprises a connection portion (4), which is spaced apart from the base (2) by connecting bridges (6), wherein the connection portion (4) comprises at least one plate (7) in which screw holes (10) are provided, and wherein a portion of the material of this plate (7) defines, as a rim (11), a respective screw hole (10) in order to ensure fastening, via a bone screw (17) to be inserted into the respective screw hole (10), to the maxilla displacing portion (5), wherein two connecting bridges (6) extend from the plate (7) of the connection portion (4) to the edge (11) of a screw hole (10) in the plate (7) of the base (2).

A method of changing a midfacial complex involving a palate, a maxilla, and a nasal cavity, may comprise a step of making a piezocision along the rostral edge of the nasal cavity via notches in a piezocorticotomy guide coupled to the maxilla and extending the piezocision antero-posteriorly from a distal outline of an incisive foramen to a PNS landmark of the palate located at the most distal ridge of the maxillary bones.

The present disclosure relates to a support element (1) for supporting at least a portion (2a) of a mandible (2) or a maxilla of a subject. The support element (1) comprises a body (3) and at least one tie. The body (3) extends apically to cover a cervical line of the dentition. The body (3) is defined with an inner surface (4a) and a plurality of holes (5). The inner surface (4a) is contoured in the shape of an occlusal morphology of the dentition. The plurality of holes (5) is configured to permit a flow of a cleaning fluid towards the inner surface (4a). The at least one tie is receivable within the plurality of holes (5) and tie configured to secure the support element (1) with the at least the portion (2a).