127 results about "Mandible/Mandibular" patented technology

A computer implemented method of creating a dental model for use in dental articulation includes providing a first set of digital data corresponding to an upper arch image of at least a portion of an upper dental arch of a patient, providing a second set of digital data corresponding to a lower arch image of at least a portion of a lower dental arch of the patient, and providing hinge axis data representative of the spatial orientation of at least one of the upper and lower dental arches relative to a condylar axis of the patient. A reference hinge axis is created relative to the upper and lower arch images based on the hinge axis data. Further, the method may include bite alignment data for use in aligning the lower and upper arch images. Yet further, the method may include providing data associated with condyle geometry of the patient, so as to provide limitations on the movement of at least the lower arch image when the arch images are displayed. Further, a wobbling technique may be used to determine an occlusal position of the lower and upper dental arches. Various computer implemented methods of dental articulation are also described. For example, such dental articulation methods may include moving at least one of the upper and lower arch images to simulate relative movement of one of the upper and lower dental arches of the patient, may include displaying another image with the upper and lower dental arches of the dental articulation model, and/or may include playing back recorded motion of a patient's mandible using the dental articulation model.

A dental device comprises an intraoral nasal dilator and a mandibular repositioner working synergistically as an anti-snoring device. The device has a lower segment of thermoplastic material which is formed to fit over the lower teeth and is connected to an upper section of molded material extending between the upper jaw and the upper lip by a wire connector. The wire connector has mechanisms allowing adjustment of the lower jaw positioning. A wire extension with acrylic pads at end is bonded in the midline of the flange and extends out so that the pads stretch the tissue of the lip and lateral nasal walls preventing collapse during respiration while the anterior repositioning of the lower jaw maintains opening of the posterior pharyngeal airway during sleep functioning as an anti-snoring device. Additional applications of the intraoral nasal dilator include incorporation into sports mouth guards using a variety of materials.

The invention discloses a manufacturing method for a fibular flap repairing mandible defect operation guiding template. The manufacturing method for the fibular flap repairing mandible defect operation guiding template comprises the steps that a mandible three-dimensional model and a fibula three-dimensional model are rebuilt, a lesion area is determined, and the target fibula is determined; the lesion area is excised, and a jaw non-lesion area model and a lesion area model are saved; the inner surface of a jaw cutting locating guiding template is attached to the outer surface of the lesion area model; the area where the fibula three-dimensional model and fibula subsection models are placed is partitioned to form a fibula repairing area; the inner surface of a fibula molding guiding template is entirely attached to the cheek side surface of the fibula repairing area; the inner surface of a fibula cutting locating guiding template is entirely attached to the outer surface of the corresponding fibula subsection model; the jaw cutting locating guiding template, the fibula molding guiding template and the fibula cutting locating guiding template are molded. The fibular flap repairing mandible defect operation guiding template and the manufacturing method have the advantages that the bone cutting scheme of the fibula and the molding position of each section of the fibula can be accurately controlled, the precise implement of a fibular flap transplanting repairing mandible defect operation is guaranteed, the operation time is shortened for the fibular flap repairing mandible defect operation.

A dental implant (1) is intended to be inserted into the maxillary or mandibular bone of a patient, extending between a distal connection end (1a) and a proximal anchoring end (1b). The dental implant (1) has a maximum outside diameter (D) less than 3 mm over its entire length (L) and is provided with a receiving device (2) having a conically tapered female cavity (2a).

The invention discloses a manufacturing method for a personalized bracket for the repairing of a center plane across mandibular defect. The method comprising the following steps: designing a repairing model for a personalized profile and an internal microstructure of an individual defect through CT scanning in combination with a curved surface reperforating way; acquiring a repair body for the defect area through a cutting algorithm; manufacturing the repair body through BOOL arithmetic design via an EBSM method; implanting a three-dimensional reticular metallic support in the mandible defect area; fixing the repair body and two bone stumps through titanium bolts; adding ossifying material and autologous bone marrow stromal cells; and stitching soft tissues and conducting implant implanting after the completion of ossifying, so as to complete denture restoration. The method provided by the invention can better promote and guide the growth of the bones, has a good synosteosis effect for the implant and the around bones, and is suitable for long-term repairing.

The invention discloses a manufacturing method of a biteplate for treating temporal-mandibular joint disc displacement by 3D printing. The manufacturing method comprises the following steps: (1) mandible condyle process positions of patients are recorded and fixed; (2) craniomaxillofacial surfaces of the patients are shot to obtain conical beam CT data of the patients; (3) upper and lower jawboneparts of the patients are rebuilt; and the head positions of the patients are adjusted according to frankfort planes of the patients; (4) bone tissue CT values, teeth and occlusalf surface areas are selected from three-dimensional drawing software for three-dimensional rebuilding of occulsalf surface data of the patients; (5) occulsalf surface three-dimensional models of the patients are rebuilt in the three-dimensional drawing software; (6) interference parts of the occulsalf surface three-dimensional models are removed; (7) the occulsalf surface three-dimensional models are guided into 3D printer mated software; (8) upper jaw parts and lower jaw parts of occlusal pads are designed; and (9) a 3D printer is used for printing to finish manufacturing of the occlusal pads. Through projectionsformed on the inner side of the biteplate, lower teeth cannot retreat due to stop by lower jaw projections of the biteplate, so that the lower jaws of the patients are maintained in a protraction state to treat the temporal-mandibular joint disc recoverable forward displacement.

The invention discloses a fibula shaping board for use in mandibular reconstruction, which comprises an arc-shaped groove and a regulating screw, wherein the regulating screw passes through the front side face of the arc-shaped groove; the end, which extends out of the front side face of the arc-shaped groove, of the regulating screw is provided with a bracket; the arc-shaped groove has three osteotomy slots, and the sizes and positions of the three osteotomy slots are prescribed in the description; the middle slot is a chin angle osteotomy slot, and the size of a chin angle is 55 to 65 degrees; the slots at the two ends are mandible angle osteotomy slots, and the size of an mandible angle is 35 to 45 degrees and the distance between a front side face and a rear side face is 2.5 to 3.5 centimeters. Through morphological analysis on the mandible of common adults, an intrinsic common law is found, and the shaping parameters of the horizontal part of the mandible are determined; on the basis of the parameters, common fibula shaping plate is designed; and thus, the four-section shaping of a transplanted fibula in the reconstruction of the horizontal part of the mandible can be realized.

The invention discloses an internal fixation fibula reconstruction mandible method. The method comprises the following steps: acquiring iconography data of a jaw and a fibula at a target position; establishing a three-dimensional data model; performing mandible focus excision through virtual design, and determining a fibula osteotomy scheme; designing and manufacturing a fibula far-end bone fracture plate and an intramedullary fixing device; implanting the internal fixing device into a fibula marrow cavity, and connecting the fibula section with the internal fixing device. According to the internally-fixed fibula reconstruction lower jawbone method, personalized intramedullary fixation is adopted according to the osteotomy scheme and the shape and the diameter of the marrow cavity, so thatlower jawbone reconstruction is more accurate, and wounds caused by a secondary operation are reduced.

Disclosed herein is a method for capturing a dental object (1) with an object volume, in particular, at least one part of a maxilla (2) and/or a mandible (3), with the use of an MRT apparatus (4). A plurality of MRT segment images (5, 8, 11, 14, 17), which depict the defined segmented volume regions (6, 9, 12, 15, 18) are acquired by an MRT apparatus (4) within a measurement volume (21) of the MRTapparatus (4). The segmented volume regions (6, 9, 12, 15, 18) overlap no more than partially. In this case a target surface (22) is defined or has already been defined. Then a two dimensional composite image (29), which corresponds to a two dimensional aggregate image through the target surface (22) within the object volume of the dental object (1), is generated in a computer-aided manner from the individual MRT segment images (5, 8, 11, 14, 17).

The invention relates to a construction method of an individualized mandible defect reconstruction guide plate system. According to the invention, a postoperative mandible model is designed and reconstructed according to the mandible ideal reconstruction form; a virtual individualized titanium plate model is designed; mandible positioning nail paths are designed at the corresponding positions of the titanium plate model and the mandible remaining bone section models on the two sides; supply area bone section positioning nail paths are designed at the positions, corresponding to all supply areabone sections, of the titanium plate model, a mandible osteotomy guide plate model is designed, a supply area bone osteotomy shaping guide plate model is designed, and an individualized titanium plate, a mandible osteotomy guide plate and a supply area bone osteotomy shaping guide plate of a solid body are manufactured through 3D printing. The accurate positioning between the individualized guideplate system and the lower jawbone of the patient can be better achieved, the construction process of the optimized guide plate system is easier, more convenient and more efficient, and accurate positioning of matching between remaining bone sections of the lower jawbone, all bone cutting sections of a supply area bone and a titanium plate can be achieved.

Methods and systems are provided repositioning teeth of a patient, which employ at least one appliance specific to the patient for placement in the patient's mouth during use. The at least one appliance includes a polymeric shell having a cavity shaped to receive teeth of the upper jaw of the patient. The polymeric shell is integral to a polymeric segment shaped to cover the hard palate of the upper jaw of the patient. The geometry and material properties of the shell is configured such that the appliance adjusts position of the teeth of the upper jaw of the patient during use. The geometry and material properties of the segment is configured such that the appliance adjusts position of the hard palate of the upper jaw of the patient during use. Additionally or alternatively, one or more appliances can be configured to contact the teeth of the lower jaw and a mandibular bone portion disposed below the gingiva of the teeth of lower jaw and adjust position of the teeth and the mandibular bone portion of the lower jaw of the patient during use.

The invention relates to a device (1) for measuring a relative position and/or movement of a mandible (UK) relative to a maxilla of a patient, comprising an emitting coil (8) for emitting an electromagnetic measuring field (5), at least one mandible sensor (US1), said mandible sensor (US1) being placed and/or can be placed on teeth in the mouth (U1-U8) or in the mouth on a mandible device (UK). The mandible sensor (US1) is designed as a sensor at least for determining a position in a measuring field (5) and/or relative to the emitting coil (8), also comprising an evaluation device (3) for determining the relative position and/or relative movement of the mandible (UK) relative to the maxilla (OK) based on positions determined by the sensor (US1). The sensor coil (8) is placed and/or can beplaced outside of the mouth on the side or above the maxilla (OK). The invention also relates to a method for determining a relative position and/or movement of the mandible (UK) relative to a maxilla(OK) of a patient with a device (1), a device (X) for simulating and transferring a measured relative movement from the method and a holding device for at least one maxilla sensor (OS1) and/or at least one mandible sensor (US1).

The invention discloses a preparation method of an appliance for abnormality repositioning of mandible. The method comprises the steps: firstly, obtaining an initial dental jaw model of a patient, wherein the occlusion relation of upper and lower dentitions in the initial dental jaw model serves as an initial relative position of the model; determining a lower jaw repositioning model after repositioning the lower jaw of the patient according to the initial relative position of the model; designing an upper molar jaw pad group and a guide inclined plane model group according to the lower jaw repositioning model, and fusing the structures of the upper molar jaw pad group and the guide inclined plane model group to obtain a printing model group; designing an appliance accessory model group adhering to the labial surface or the lingual surface of the teeth; and combining the lower jaw repositioning model, the printing model group and the appliance accessory model group A, printing through3D to obtain an upper jaw model and a lower jaw model, and forming and cutting the printed model through a hot pressing film to obtain the lower jaw repositioning appliance. In the process of lower jaw repositioning correction, invisible correction and functional correction are simultaneously carried out.

The invention discloses novel forceps for the reduction of sagittal fracture of mandibular condyle; the novel forceps comprise two handheld rings and two connection parts; the two connection parts are hinged to each other; two forceps arms are arranged at the upper end; the top end of one forceps arm is provided with a positioning jaw, and the top end of the other forceps arm is provided with a fastening jaw; the positioning jaw comprises two clamp tips that connect at the base and open at the end; the fastening jaw is releasably inserted between the two clamp tips. The novel forceps are suitable for the reduction of a fracture between the upper end face of the mandibular condyloid process and the two clamp tips, is widely applicable, and is good in flexibility. A production of jaws of the novel forceps for the reduction of sagittal fracture of mandibular condyle is also disclosed; the jaws are made by combining: ultrahigh molecular weight polyethylene, nano ZnO, nano chitosan and the sintering aid nano Ni; the production method of the jaws has low production cost, the jaws gain well-improved tensile strength, impact resistance, rigidity and hardness, the antibacterial capacity is also greatly improved, and the jaws are applicable as disposable jaws.