73 results about "Mandible/Mandibular" 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.

The invention discloses a mandibular canal segmentation method and system, electronic equipment and a storage medium. The method comprises the following steps: acquiring an oral maxillofacial region image; cutting the oral maxillofacial region image to obtain a plurality of local images of the mandible; inputting the plurality of local images into a mandibular canal segmentation model, and outputting to obtain a segmentation result; the mandibular canal segmentation model comprises an encoder, a decoder and a feature fusion module, three two-dimensional convolution branches are configured on three orthogonal projection planes in the feature fusion module, and each two-dimensional convolution branch can obtain boundary information, center trend and local bending features of the mandibular canal on different orthogonal planes and fuse the boundary information, the center trend and the local bending features to obtain multi-view features; and fusing the multi-view feature and the local texture feature to obtain an enhanced feature, fusing the local texture feature and the enhanced feature by a decoder, and outputting to obtain a segmentation result. And through the feature fusion module, comprehensive coverage of multi-view geometric features is realized, and the problems of segmentation fracture and boundary blur caused by single feature extraction are effectively avoided.

The application discloses a kind of digital lower jaw accurate positioning and customized removable denture preparation integrated method, it is related to stomatology technical field. Including: initial diagnosis data collection;Digital modeling and jaw position adjustment;Design treatment jaw position guide plate;Try on jaw position guide plate, check lower jaw movement, confirm facial form beautiful, prepare silicon rubber final impression, record the actual occlusion relationship of patient;Based on occlusion relationship preparation-final denture, the obtained-final denture is carried out clinical evaluation.The application is for complex oral conditions, such as occlusion disorder, temporomandibular joint disorder patient, by obtaining personalized fitting removable denture, adjusting the relative position relationship of upper and lower jaw bones, relieving abnormal stress of joint, assisting the stability and recovery of temporomandibular joint, realizing the unity of stability and aesthetic effect of stomatognathic system after repair.

A ventilation assembly (37) for use in ventilation of a subject using a laryngeal mask (5) comprises a head-wearable harness (39) and a pusher (41). The harness is arrangeable on the subject's head (H) for supporting the pusher to press against the floor of the mouth (15) of the subject (P). The pusher comprises laterally opposite protrusions to displace, in use and operably supported by the harness on the subject (P), soft tissue of the subject at the left and right submandibular triangles (trigonum submandibulare) in cranial direction relative to the mandible (29) of the subject and surrounding tissue of the subject such as the submental triangle (trigonum submentale) for, when the laryngeal mask is installed in the airway of the subject, urging internal soft tissue of the subject against the laryngeal mask in the airway of the subject. Each protrusion or the pusher as a whole is hollow providing a recess for accommodating an operators' finger.

This invention relates to a markerless real-time registration and tracking method and system for mandibular surgery. The method includes the following steps: the patient performs multiple opening and closing movements of the upper and lower jaws while the robotic arm is fixed, and the system synchronously records the changes in the angles of each joint of the robotic arm; based on the forward kinematics of the robotic arm, the continuous motion trajectory of the distal end of the jaw in space is calculated to form an actual jawbone trajectory point cloud; a preoperative image model is formed using the actual jawbone trajectory point cloud, a simulated jawbone trajectory is constructed in the preoperative image model, and the actual trajectory is aligned using the ICP registration algorithm to achieve automatic registration; the system establishes a mapping between angle changes and the spatial posture of the jawbone to achieve dynamic tracking and visual navigation during surgery. This invention solves the problems of large errors, high complexity, many limitations, and low efficiency in preoperative image data registration technology during maxillofacial surgery, avoids the need for preoperative implantation of markers, and achieves high-precision registration, high automation, and strong real-time performance under natural conditions.

An arch bar system for maxillomandibular fixation is disclosed. A contourable, trim-to-fit bar includes a series of elongated oval apertures oriented substantially parallel to the bar axis. The apertures guide wire, coated suture, or other ligatures at varied approach angles, limit vertical clearance to resist slippage, and cooperate with intervening structural columns to distribute loads while the bar is cinched to teeth. Low-profile depending attachment features—cleats and / or J-hooks—project below the lower edge to receive interarch wire loops, guiding elastics, or other connectors. All patient-facing edges and transitions are radiused to minimize gingival and mucosal trauma. Bars may be metal or engineered polymer and segmentable for partial-arch use. Methods include threading ligatures through successive apertures to secure each bar and joining opposing bars at the depending features. Kits include paired bars, ligatures, interarch connectors, and tools.

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.

The present invention relates to a condyle positioner device that allows the guided positioning of the mandibular condyles in the glenoid fossa, thereby improving the quality of life of many people.

The invention relates to the field of oral digitization, and provides a three-dimensional form automatic reconstruction method and system for a mandible defect. The method comprises the following steps: importing CBCT image data of a patient with the mandible defect into three-dimensional reconstruction software, and extracting hard tissues of the mandible through threshold segmentation to obtain three-dimensional data of the mandible defect; obtaining structured mandible three-dimensional template data; performing size normalization and initial alignment on the structured mandible three-dimensional template data and the mandible defect three-dimensional data to obtain initial alignment template data; gradually deforming and registering the initial alignment template data to the mandible defect three-dimensional data based on a non-rigid registration algorithm added with symmetry constraint to obtain template deformation registration data; and outputting the template deformation registration data as a mandible defect three-dimensional reconstruction result. According to the method, the automation degree and efficiency of three-dimensional reconstruction of the mandible defect are improved.

A system and method for creating a model of a patient's mandible and any teeth supported from the mandible and manipulating the mandible relative to anatomical features of the patient's maxilla. The system uses markers positioned on the mandible and on the maxilla to create a functional mandibular axis that approximates an axis through the condyles of the patient. The functional mandibular axis and geometric and anatomical information about the patient's upper and lower jaw are then used to create prostheses for the patient. The system is also used for making corrections to the prosthesis.

This invention discloses a series of osteotomy guides for condylar osteotomy and their manufacturing method, relating to the field of medical device technology. The manufacturing method includes the following steps: creating a hard plaster dental model; establishing a virtual three-dimensional craniomaxillary model; acquiring virtual dentition data and replacing the dentition data in the three-dimensional model with virtual data; determining the target position of the mandibular bone segment; planning and virtually designing the osteotomy lines for coracoid and condylar resection, and virtually resecting the affected side's coracoid and condylar processes, and virtually designing the affected side's temporomandibular joint reconstruction to obtain a three-dimensional model of the affected side's ascending ramus; drawing the coracoid osteotomy guide; drawing the condylar osteotomy guide based on the mandibular morphology and osteotomy line position; and three-dimensionally printing the guide. By employing the above method, the guide can be fixed using its own shape, eliminating the need for additional fixation measures, reducing the difficulty of the procedure, shortening the operation time, and improving the accuracy of condylar resection; it also reduces the possibility of design errors caused by multi-data matching and fusion during the digital design process.

The invention provides a vertical control type silica gel jaw pad appliance for high-angle cases, which comprises an appliance body, a tooth accommodating groove and a jaw pad structure are arranged on the appliance body, and a wedge-shaped structure is arranged at the tail end part of the jaw pad structure; the wedge-shaped structure is provided with a guide surface, and the guide surface is an inclined surface which is formed when the tooth positioning groove is in an occlusion state and is formed by taking an occlusal surface as a base surface and is inclined downwards relatively; when teeth make contact with the guide face of the wedge-shaped structure, upward correction force which is provided by the guide face and is close to the rear portion of the oral cavity can be obtained, the correction force can guide maxillary rear teeth to extend in the direction close to the throat, and anterior displacement of the mandible is induced through change of the occlusion relation.

A mandible adjustment device comprises an upper teeth brace and a lower teeth brace wherein the upper teeth brace and the lower teeth brace have an upper teeth accommodation space and a lower teeth accommodation space, respectively: the upper teeth accommodation space and the lower teeth accommodation space are developed according to a user's dental pattern for matching a human being's maxillary dental arch and mandible dental arch, respectively; the upper teeth brace and the lower teeth brace laterally extend a mucosa protection device opposite to an upper molar area and a positioning part opposite to a lower molar area, respectively. The upper teeth brace and the lower teeth brace, both of which have been installed, drive the positioning part and the mucosa protection device to combine each other and keep a flexible displacement space for neither discomfort at a condyle of the mandible.

The invention relates to the technical field of oral and maxillofacial surgical operating instruments, and discloses a mandible condyle fracture precise and reliable reduction combined instrument which comprises a condyle tooth hook, a double-end drag hook, a V-shaped pusher and a large-angle drag hook which are all made of 17-4PH stainless steel. The condylar process tooth hook is of a double-end design, and the double-end draw hook has two working forms. According to the precise and reliable reduction combined instrument for the mandible condylar fracture and the application method, by arranging a special instrument set with the complementary functions of the condylar tooth hook, the double-end drag hook, the V-shaped pusher and the large-angle drag hook, view exposure, soft tissue protection and bone segment reduction and stabilization are all considered, meanwhile, a systematized operation scheme formed by the set instrument is achieved, and the operation efficiency is improved. The whole-course operation from soft tissue exposure to bone segment fixation is covered, the technical blank of the complete set of instruments in China is filled, and the standardization and efficiency of the operation are greatly improved.

This invention discloses a method for reconstructing a three-dimensional motion and joint force dynamic model of the jaw system, relating to the field of medical technology. The method includes: S1, acquiring a multimodal dataset synchronously collected through a multimodal sensing system and unified to a skeletal coordinate system based on the mandible and temporomandibular joint; S2, constructing an individualized mandibular musculoskeletal model based on the patient's jaw CT image data; S3, using an optimization algorithm, taking the multimodal dataset as input, and under the constraints of the mandibular musculoskeletal model, performing inverse kinematics solution to deduce the six-degree-of-freedom motion trajectory of the mandible in three-dimensional space; S4, based on the six-degree-of-freedom motion trajectory, applying the optimization algorithm and the mandibular musculoskeletal model, and calculating the dynamic contact reaction force distribution of the temporomandibular joint through inverse dynamics analysis; S5, using the dynamic contact reaction force distribution as input, feeding it back to the mandibular musculoskeletal model to calculate the intensity distribution of key muscles involved in mandibular movement.

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a kind of extraoral anterior traction during dentition period. Including cap body and rigid brim, still including jaw bag, the jaw bag two sides are movably connected with rigid brim by telescopic elastic band, the jaw bag two sides are also connected or bypass patient neck interconnect by elastic band with the rear end of cap body. The middle of cap body is also connected with maxilla traction belt, and multiple fixed columns are distributed on the maxilla traction belt. The two ends of oral appliance are connected with the fixed column on maxilla traction belt by rubber band. The lower end of maxilla traction belt can also be connected with the elastic band, so that the whole equipment structure is more compact. The utility model not only helps children patients to reduce the frequency and degree of mouth opening, but also produces a forward and upward traction on the mandible, changes the growth direction of the mandible growing backward and downward due to mouth opening, and tends to be normal.

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.

The utility model discloses a kind of improved mandibular protrusion appliance, it includes the upper dental brace (1) of sleeve fixed on maxillary plate and the lower dental brace (2) of sleeve fixed on mandibular plate, the front side welding of the upper dental brace (1) has upper traction hook (3), the rear side welding of the lower dental brace (2) has lower traction hook (4), the upper traction hook (3) and lower traction hook (4) are mutually traction by elastic rubber band (5) between, the middle part of the upper dental brace (1) is provided with an arch expander (6), the bottom of the upper dental brace (1) is provided with upper inclined plane (7).The utility model is easy to adjust and grind, can be adjusted according to replacement tooth condition;Arch expander is arranged in the upper dental brace, and anterior teeth are retracted;Mandible can be protruded by the traction of mouth outer bow and head cap, realize counterclockwise rotation jaw plane, carry out good vertical control, improve face shape better.

Mandibular repositioning devices providing downward movement as well as forward movement of the mandible have a maxillary tooth covering having a driver flange protruding laterally outward on one or both sides thereof and have a mandibular tooth covering having a protrusive flange extending cranially therefrom positioned to have a posterior side engaged with the anterior side of each driver flange. The anterior side of each driver flange has a convex curvature. The posterior side of each protrusive flange has a concave-to-convex curvature positioned to move the convex portion thereof along the convex curvature of the driver flange when the mouth opens, which also moves the mandible forward. A plateau of a preselected height, which prevents disconnect between each protrusive flange and its respective driver flange relative to a fully open mouth measurement, is present between the base of the protrusive flange and the tooth covering.

A temporomandibular joint replacement system comprising a condylar component anatomically contoured for attachment with a mandibular bone with a condylar head and a fossa component 102 with a fossa ba

A configurable time-delayed oral mandible displacement device includes a top member and a bottom member, the bottom member slidably coupled to the top member for movement between a non-extended position and an extended position. A control mechanism is coupled between the top member and the bottom member for controlling extension of the bottom member. The control mechanism an element fabricated from a shape memory material. The control mechanism further includes a heat-transfer control portion providing configurability by variation of a characteristic thereof. The configurability allows for controllably selecting a duration of an activation time delay, during which the temperature of the element fabricated from shape memory material increases to an activation temperature by absorbing body heat from a human wearer after the device is inserted into the mouth of the human wearer.

The invention relates to the technical field of minimally invasive surgery, in particular to a mandible condylar fracture bionic simulation trainer and a use method thereof. According to the technical scheme, the device comprises a profiling upper jaw part, a bionic lower jaw part, a left glenoid fossa, a skin, a right glenoid fossa, a bionic left profiling tissue and a bionic right profiling tissue. The right joint fossa is fixed in the fixing hole in the rightmost end, when the center locking piece is loosened, the center locking piece can slide in the corrugated hole, when the center locking piece is locked, the center locking piece is fixed in the corrugated hole, and the telescopic support assembly is fixed to the first main framework through the center locking piece. And meanwhile, the bionic lower jaw part, the bionic left profiling tissue and the bionic right profiling tissue are matched, so that the simulation accuracy is improved, detailed data are given to medical staff, and the occurrence of later-stage operation problems is reduced.

Systems and methods for mandibular reconstruction are provided. An example system may comprise a drilling guide comprising: (1) a body configured to register against two adjacent surfaces of a native mandible when the body is temporarily secured to the native mandible; and (2) a tube extending from the body. The tube may be configured to constrain orientation of a drill bit when inserted through the tube and into the native mandible to reduce off-axis tilt of the drill bit when forming a void in the native mandible. Size and orientation of the void may correspond with size and orientation of a phalange of a neo-mandible assembly to be received within the void.

1. Name of the product in this design: One-piece ceramic implant. 2. Purpose of this design: To provide support and fixation for the restoration of missing teeth by surgically implanting it into the maxilla or mandible, for the restoration of damaged teeth, and to replace missing teeth. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model provides a mandibular push molar distalization device suitable for bony class III malocclusion, which comprises a tail end guide rail, a front end guide rail, a push rod and a sleeve type push spring, the tail end guide rail is fixed on the last tooth needing to be moved, the front end guide rail is fixed on canine teeth or first premolar teeth at the turning position of a dentition dental arch, and the push rod is fixed on the sleeve type push spring. A push rod is arranged between the tail end guide rail and the front end guide rail in a penetrating mode, a traction hook is arranged at the end, penetrating through the front end guide rail, of the push rod, a tail end blocking ball is arranged at the other end, penetrating through the tail end guide rail, of the push rod, a sleeve type push spring is movably connected between the tail end guide rail and the front end guide rail in a sleeved mode, and a free buckle for blocking and limiting the sleeve type push spring is arranged on the push rod. The traction hook is connected with a jaw anchorage component such as an anchorage nail through a rubber band. The mandibular molars can be pushed to the distal direction, the mandibular molars can be pushed to the distal direction, meanwhile, the mandibular molars can assist in promoting the development of the maxilla and inhibiting the development of the mandible for other clinical bony III-type malocclusion orthotic devices, the structure is scientific and reasonable, the mandibular molars are simple and practical, the mechanical analysis is simple and clear, the use comfort of a patient is high, and the orthotic effect is good.

A dental implant identification system is provided that aids a dental professional in identifying the type of dental implant that has been surgically placed into maxillary or mandibular bone of a patient who requires restorative dental procedures. Additionally, a dental implant identification system is provided that aids a dental professional in identifying the forensic remains of victims due to various factors and circumstances.

A non-crestal dental implant system includes at least one dental implant having a proximal end and a distal end; the implant configured to be inserted by way of a non-crestal approach into a mandible or maxilla from a specific zone originating in either the buccal side or lingual side of a mandible or either the buccal side or palatal side of a maxilla towards a termination point in a specific zone in a mandible or maxilla via an omnidirectional pathway which does not go through or contact the crest of the ridge, thereby utilizing otherwise non-usable bone to secure at least one dental implant; and at least one retentive element having a proximal end for attaching to the dental implant and a distal end configured for the attachment of a dental prosthesis. The system includes a dental implant placement tool for placing a non-crestal dental implant

An artificial jawbone, comprising fixing mounts (1), connecting members (2) and mandible supports (3), wherein the connecting members (2) are arranged on the fixing mounts (1); the upper end of each mandible support (3) is connected to a fixing mount (1) by means of a connecting member (2); each mandible support (3) comprises a mandibular ramus (31) and a mandibular body (32); each connecting member (2) is provided with an elongated hole (20) extending in a front-rear direction; a connecting column (311) is provided at the upper end of each mandibular ramus (31), and runs through an elongated hole (20); the upper end of each mandibular ramus (31) can rotate around a connecting column (311), and the connecting column (311) can slide in an elongated hole (20) in the lengthwise direction of the elongated hole (20), and can also slide in the elongated hole (20) in the axial direction of the connecting column (311); and each connecting column (311) is connected to the upper end of a mandibular ramus (31) at a proximal end, and has a limiting block (312) provided at a distal end thereof. The artificial jawbone can simulate and restore the elevation, depression, protraction, retraction and lateral movements of the mandible, and features a good functional recovery effect, stable connection, and resistance to dislocation.

The invention relates to the technical field of medical supplies, in particular to a detachable jaw cyst postoperative pressurizing elastic band which is composed of a base band and a pressurizing band, and the two ends of the base band are detachably connected with the two ends of the pressurizing band through connecting elements to form a length-adjustable and elastic annular structural body. According to the detachable jaw cyst postoperative pressurizing elastic band, an oral surgeon can locally pressurize according to needs, the postoperative pressurizing process is accelerated, the surgeon can operate more conveniently, meanwhile, compared with the existing mode that rolled gauze is placed in a corresponding operation area of the face, the detachable jaw cyst postoperative pressurizing elastic band is more stable, and the operation efficiency is improved. The designed device is suitable for cysts of all parts of the upper jaw and the lower jaw, does not affect feeding of a patient, and improves the process of the jaw cyst pressurizing operation.

The utility model relates to the technical field of surgical instruments, in particular to a mandibular angle standard positioner with a ruler, which comprises a positioning plate vertically arranged and used for being attached to the rear side of a mandible, a marking plate is connected to the outer side of the lower end of the positioning plate and used for being attached to the surface of one side of the mandible, and a ruler is arranged on the marking plate. An included angle formed between the positioning plate and the marking plate is an obtuse angle; the marking plate is connected with a scale plate which is obliquely arranged upwards, and a hook is arranged at the far end of the scale plate and is used for being hung at the front edge position of a grown limb on the mandible. The bone cutter has the characteristics that the positioning is more reasonable, the accuracy of the position of the bone cutting line can be improved, and the hand-held use is more convenient.