158 results about "Jaw bone" patented technology

The invention relates to an oral and maxillofacial implant repair path generation system based on a CBCT image, in particular to the field of computer aided design of surgical operations, and the scheme comprises the following steps: constructing a high-quality training data set through multi-source data aggregation and intelligent labeling enhancement; training by using the mixed model to generate a high-precision jaw segmentation model; the segmentation parameters are dynamically adjusted in combination with real-time feedback in preoperative planning, and a personalized optimization result is output; the model is continuously updated and the data strategy is optimized by means of a closed-loop feedback mechanism, so that the planning accuracy, the self-adaptability and the clinical efficiency of oral maxillofacial implant restoration are comprehensively improved, and the whole process from data to decision making is intelligentized.

The utility model relates to the field of medical instruments, in particular to a jaw cyst windowing and pressure reducing device. The device comprises a guide part, a connecting part and a base which are sequentially arranged from top to bottom. And the small-diameter section of the guide part is positioned at the upper part. The connecting part is a cylinder, and the diameter of the connecting part is smaller than that of the bottom of the guide part. The short axis size of the base is larger than the diameter size of the bottom of the guide part. The bottom of the base is provided with a through hole penetrating to the position above the guide part, and a drainage channel is formed. The springback characteristic of soft tissue in the bag cavity is utilized, so that the guide part and the connecting part can be fixed in the bag cavity and cannot fall off; meanwhile, through the elliptic cylindrical base, the base is effectively prevented from entering the bag cavity, the shape of the vestibular groove is met, and the wearing is free of foreign body sensation and more comfortable.

The invention relates to a jaw traction device which comprises a support, a lead screw, a fixed traction plate, a movable traction plate and a driving assembly. When an operator presses the button shaft, the ejector rod shaft can be driven to rotate around the axis of the ejector rod shaft through clamping rotation fit between the second clamping part and the first clamping part, then the lead screw is driven to rotate around the axis of the lead screw through meshing transmission between the ejector rod shaft and the lead screw, and therefore the movable traction plate is driven to move along the axis of the lead screw. Furthermore, the distance between the movable traction plate and the fixed traction plate is adjustable, and the movable traction plate and the fixed traction plate can prop open and keep the two ends of the jaw bone by utilizing the screwing self-locking limiting between the screw rod and the movable traction plate; the jaw traction device is designed to be completely implanted into the cheek skin tissue, the operative wound is minimized, accurate traction can be achieved, controllable traction of the jaw is achieved, the living quality of a patient is improved in the traction process, and postoperative nursing difficulty is reduced.

The invention relates to the technical field of medical image processing and artificial intelligence diagnosis, in particular to an oral and maxillofacial surgery image recognition and diagnosis method and system based on deep learning, and the method comprises the following steps: multi-modal image collection and cooperative preprocessing: collecting an oral and maxillofacial surgery CBCT image, a cone beam CT curved surface tomography image, an oral endoscope image and an ultrasonic image, a standardized multi-modal image data set is obtained through inter-modal registration and an adaptive enhancement algorithm; according to the method, a traditional diagnosis framework of'single-mode image + manual film reading 'is broken through, and a three-order diagnosis logic of'multi-mode image cooperative enhancement-cross-scale feature dynamic fusion-focus typing and risk hierarchical linkage' is innovatively provided; and accurate identification, typing and malignant transformation risk prediction of common oral and maxillofacial surgery diseases (such as jaw cyst, wisdom tooth impediment, temporomandibular joint disorder and maxillofacial tumor) are realized.

This invention relates to the field of implant bridging technology, specifically to a bridging-type implant superstructure restoration. It includes a support layer structure, which is fixed to the jawbone by a plurality of implant screws rotatably mounted below it. A plurality of crowns are mounted above the support layer structure, with the support layer structure positioned between the crowns and the jawbone. The support layer structure absorbs part of the occlusal impact force generated by the crowns from top to bottom. Fixing components are disposed inside the crowns, securing them above the support layer structure. The fixing components are coaxially arranged with the implant screws. The support layer structure, through the fixing components, restricts the installation orientation of the crowns, ensuring that the crown axis remains parallel to the jawbone surface. The lower and upper clamps of this invention are fixedly connected by two staggered support rods. When the lower and upper clamps approach each other, they compress the two support rods, causing lateral deformation and absorbing the occlusal impact force.

The invention relates to a jaw tractor which comprises a traction tube provided with a guide groove and provided with a front end and a rear end. The fixed traction plate is fixed relative to the traction tube; the movable traction seat is restrained in the guide groove and can axially slide, and a threaded through hole which axially penetrates through the movable traction seat is formed in the movable traction seat; the movable traction plate is fixed on the movable traction seat; the traction screw rod is arranged in the guide groove and can rotate around the axis of the traction screw rod, the front end of the traction screw rod penetrates out of the traction pipe to form a driving end, the universal joint is used for being connected with the stress application rod, and the traction screw rod penetrates through and is in threaded connection with the interior of a threaded through hole in the movable traction seat; the traction device is characterized in that the fixed traction plate is arranged close to the front end of the traction tube, and the movable traction plate is located behind the fixed traction plate. The distraction direction of the retractor is not limited by the space of the oral vestibule, so that the traction difficulty caused by the conflict of the traction directions is effectively avoided, and the predictability and the accuracy of the distraction osteogenesis process are improved.

The present dental implant, whether tapered or cylindrical, is cannulated, to allow placement over a slender post pre-embedded into the host bone. The post is a rigid, not a flexible, construct that can be placed accurately, as to position and angle, in the jawbone. With the post in the correct position, the implant is then installed directly over the temporarily anchored post, and after tightening of the implant by rotation the post is removed.

Computer-implemented data processing system for the automatic determination of a relative positional relationship between the upper and lower jaw, in particular a maximum intercuspal position (MIP), comprising: > a) an input interface (110) configured to receive > at least two separately captured three-dimensional dental > geometries of an upper and a lower jaw; > > b) a pre-registration module (120) configured to determine > an initial spatial assignment of the individual jaw geometries > to each other based on geometric features of the dental arches; > > c) a fine-registration module (130) configured for iterative > refinement of the spatial assignment by minimizing a > distance or correspondence measure between corresponding > surface areas; > > d) a contact optimization module (140) configured to determine > an optimal relative position by maximizing the number or > quality of occlusal contact points while simultaneously minimizing > penetrations between the dental geometries;> > e\) an output interface (150) configured to provide > the specified relative positional relationship as a transformation matrix, > contact point list and / or registered model pair for downstream > analysis, simulation or manufacturing systems.;

The present application relates to the field of medical informatics, and provides a tooth abnormal vibration signal detection system, comprising: an arc-shaped base body; a plurality of arc-shaped base body vibration sensors embedded in the arc-shaped base body, each arc-shaped base body vibration sensor corresponding to one of two sides of a predetermined implant implantation position of a user and being adjacent to a tooth, for real-time sensing of an external mechanical vibration signal acting on the arc-shaped base body and the two sides of the tooth; a bone conduction vibration sensor for sensing a bone conduction vibration signal conducted to the predetermined implant screw base through the jaw bone of the user; and a signal processing module for receiving the external mechanical vibration signal and the bone conduction vibration signal respectively, performing frequency domain conversion, calculating the similarity of first and second frequency spectrum characteristics, and outputting a same frequency judgment result. The present application improves the real-time detection accuracy of implant nail and tooth root collision, and improves the implant success rate and safety.

This invention discloses a deep learning-based method for predicting orthodontic outcomes, belonging to the field of artificial intelligence-assisted technology. The method includes acquiring multimodal initial data of the target patient, comprising craniofacial CBCT 3D images, intraoral 3D scan models, and a digital design scheme for orthodontic appliances containing target tooth displacement data. Based on the CBCT 3D images, macroscopic geometric features of the jawbone are extracted using a macroscopic morphological encoder, and microscopic tissue features of the periodontal region are extracted using a microscopic tissue feature encoder. The macroscopic morphological encoder is a 3D convolutional neural network, and the microscopic tissue feature encoder is a local window attention network based on a visual Transformer. This invention can predict the dynamic effects of the interaction between tooth movement and adaptive skeletal remodeling, and is particularly suitable for predicting orthodontic outcomes in adolescents during their growth and development period, addressing the industry pain point of large systematic biases in static models in such scenarios.

The utility model discloses an oral implant which comprises a bone surface supporting structure, the appearance of the bone surface supporting structure is attached to an upper jaw alveolar bone surface or a lower jaw alveolar bone surface, and a net-shaped through hole is formed in the bone surface supporting structure and corresponds to the alveolar bone surface; a plurality of base tables protruding out of the surface are arranged on the surface of one side of the bone surface supporting structure, and the base tables are used for fixedly connecting the oral implant with a prosthesis; one end, connected to the bone surface supporting structure, of the abutment is provided with an intraosseous implant implanted into the jaw bone. According to the utility model, the traditional subperiosteal implant is improved, the subperiosteal implant is designed in the area with insufficient bone mass of the jaw bone, and the novel stent-shaped implant is formed by combining the subperiosteal implant with the intraosseous implant in the area with sufficient bone mass of the jaw bone, so that independent bone increment operation is not needed, and the implant can be implanted only by one operation; and the clinical problem that a patient with serious atrophy of the alveolar ridge is difficult to implant and repair is effectively solved.

Provided in the present invention is a method for digital virtual occlusal alignment in orthognathic surgery. The method comprises: acquiring a three-dimensional digital oral cavity model of a patient, the three-dimensional digital oral cavity model comprising jaw bones and dentitions; segmenting the jaw bones in the three-dimensional digital oral cavity model to form a segmentation model; calibrating reference position information on the segmentation model, and determining an adjustment rule; and aligning the segmented jaw bones in the segmentation model until the adjustment rule is satisfied.

The invention discloses a jaw cyst scraping instrument and a using method, and relates to the technical field of medical instruments. The scraping treatment instrument comprises a handle, a flexible connecting rod capable of being manually shaped and a brush head assembly, wherein a bristle unit in the brush head assembly is detachably fixed to a brush base in a magnetic attraction mode; three plastic core materials distributed in an equilateral triangle shape are arranged in the connecting rod, and the outer side of the connecting rod is sleeved with an elastic reset sleeve. The device can adapt to a complex bone cavity form through the moldable connecting rod, and the problem of a scraping blind area of a traditional rigid instrument is solved; the magnetic type bristle unit can be prevented from falling into the body of a patient, and the debridement suitability is improved by matching with the multi-shape bristle unit; the reset sleeve achieves convenient reset of the connecting rod, the operation efficiency and safety are integrally improved, and the postoperative recurrence risk is reduced.

This method provides support for appropriate implant procedures using three-dimensional data representing the oral cavity. [Solution] This is a support device for assisting in implant procedures that include multiple components. The support device comprises an acquisition unit that acquires three-dimensional data showing the three-dimensional shape of the oral cavity including the jawbone; a calculation unit that determines the position of each of the multiple components in the oral cavity based on the three-dimensional data acquired by the acquisition unit and adjusts the position of at least one of the determined multiple components based on the positional relationship of the multiple components; and an output unit that outputs support information showing the position of each of the multiple components after adjustment by the calculation unit.

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.

The invention relates to the technical field of orthodontic medical instruments, in particular to a dentition tongue side stress application traction device, an anchorage nail of the device can be arranged on the upper jaw palatal side portion of the dentition tongue side, a traction hook can be fixed relative to anterior teeth and extends from the anterior teeth to the dentition tongue side, a guide rod penetrates through a directional catheter located on the dentition tongue side, and the directional catheter is connected with the traction hook. The draw bar is fixedly connected with the draw hook; according to the application, the anchorage nail is arranged on the palatal side part of the upper jaw bone on the dentition tongue side, and the influence of loosening or falling of the anchorage nail on the treatment efficiency is reduced by utilizing the advantage of compact bone in the area; meanwhile, the guide rod penetrates through the directional catheter and is fixedly connected with the traction hook, so that the orthodontic force is strictly applied along the extension direction of the guide rod, and the risk of accidental rotation or inclination of teeth can be reduced; the traction piece is connected with the traction hook and the anchorage nail or is connected with the traction hook and the rear teeth, no additional connecting device needs to be added, the traction piece can be effectively matched with the orthodontic appliance to correct the teeth, the operation process is simplified, and the treatment cost is reduced.

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.

The invention discloses a biomechanical front traction reverse joint appliance which comprises an upper jaw front traction appliance body, and a traction indication structure with a connecting line mark is arranged between a traction structure of the upper jaw front traction appliance body and an impedance center of an upper jaw bone, so that a clinician can conveniently judge the position relation between a traction direction and the impedance center. The invention also discloses a specific manufacturing scheme of the appliance structure. The manufacturing scheme comprises the following steps: constructing a three-dimensional model of the jaw bone and the dentition of a patient based on oral cavity scanning and image examination of the patient, determining the resistance center of the maxilla bone, and constructing and displaying the structure on the appliance according to the connection line indication of the resistance center of the maxilla bone and the traction device. According to the invention, a doctor can conveniently formulate a reasonable traction direction according to different vertical bone surface types of a patient clinically, the prejudgment of the traction effect is increased, and the clinical treatment efficiency is improved.

The invention provides an occlusion induction appliance for a tooth replacement period, an orthodontic system for guiding jaw growth in the tooth replacement period and a design method of the orthodontic system. The occlusion induction appliance for the tooth replacement period comprises an upper jaw tooth socket and a lower jaw tooth socket, a lower jaw brace; the intermaxillary connecting body is positioned between the occlusal surfaces of the back tooth areas of the upper jaw tooth socket and the lower jaw tooth socket; wherein the upper jaw tooth socket and the lower jaw tooth socket form a rigid integral structure which cannot move relatively on an occlusal surface through the intermaxillary connector; the intermaxillary connecting body has a preset thickness so as to open occlusion contact of upper and lower anterior teeth in a wearing state, and the intermaxillary connecting body is configured to lock the lower jaw tooth socket at a preset three-dimensional space position relative to the upper jaw tooth socket body; when the occlusion induction appliance for the tooth replacement period is worn, the upper dentition and the lower dentition serve as integral interactive anchorage, and the occlusion force is converted into the orthodontic force acting on the dentition or the jaw bone.

The invention discloses a 3D printing method for an osteogenesis technology and a personalized box-type titanium plate, and relates to the field of manufacturing of medical instruments, and the 3D printing method specifically comprises the following steps: S1, obtaining and preprocessing three-dimensional data of a jaw bone of a patient; s2, three-dimensional reconstruction and virtual repair of an ideal contour before bone defect; s3, digitally designing the personalized box type titanium plate; s4, the personalized box type titanium plate is manufactured through 3D printing; and S5, clinical application in an operation. According to the 3D printing method for the osteogenesis technology and the personalized box-type titanium plate, the personalized box-type titanium plate can be passively placed in place in an operation, that is, the shape of the personalized box-type titanium plate is naturally matched with a bone defect area, and an ideal bone arch outline can be perfectly recovered after the personalized box-type titanium plate is placed. The dependence on the personal skill of doctors is reduced, the operation result has predictability and repeatability, and the fixing stability of the box-type titanium plate is far better than that of a bone block because the box-type titanium plate is directly fixed on the residual healthy basal bone through the screws.

The present application relates to a kind of sgRNA targeting Plagl1 gene DMR, epigenetic editing system and its application.Specifically, the present application provides sgRNA targeting Plagl1 gene differential methylation region, which forms epigenetic editing system with dCas9-Tet1-CD fusion protein.The system is loaded in injectable type light-cured silk fibroin hydrogel, the expression of Plagl1 gene in periosteum stem / progenitor cells is accurately activated by targeted demethylation modification, thereby promoting osteogenic differentiation.The present application combines epigenetic regulation with biomaterial delivery, and provides a safe, efficient new strategy for jaw bone defect regeneration and repair.

This invention provides an artificial intelligence-based method and system for identifying jaw cysts. The method includes: identifying jaw cyst lesion regions in oral CBCT images; extracting image features from the region with the largest connected component as the region of interest for the cyst lesion; identifying the location regions of each tooth in the image; selecting the target tooth closest to the jaw cyst lesion region; constructing a first spatial feature of the jaw cyst lesion region to characterize whether the coordinates of the center point of the jaw cyst lesion region overlap with the coordinates of the location region of the target tooth; identifying the root apical functional region of interest of the target tooth and extracting its image features; identifying the midline region of the image; constructing a second spatial feature of the jaw cyst lesion region to characterize whether the jaw cyst lesion region overlaps with the midline region of the image; concatenating the features to generate a joint feature vector; and inputting the joint feature vector into a machine learning model to identify the lesion nature of the jaw cyst lesion.

The present invention relates to a suture device (100) including a first jaw (112) and a second jaw (114) connected by a. pivot (116), and an arm (102) connected to the second jaw (114) and the pivot (102) . The device (100) further includes a moving mechanism (108) that can move between an open position (151) and a closed position (152). The moving mechanism (108) includes a button (124) that compresses the arm (102), a support block (126) that supports the button (124) and moves within a support ledge (128) to allow the moving mechanism (108) to open (151) and dose (152), and a locking ledge (130) that maintains the position of a. hook (132) on the button (124) to lock the suture device (100) in the closed position (152). This suture device (100) provides improved control and ease of use during surgical procedures.

This invention relates to the field of orthodontics and discloses a method for designing a combined orthognathic and orthodontic treatment plan, an electronic device, and a computer-readable storage medium. The method includes obtaining an initial head model of a user; the position of the jawbone in the initial head model is the initial position of the jawbone; obtaining the target position of the user's jawbone and the corresponding unit movement step length of the jawbone; based on the initial head model and the unit movement step length of the corresponding jawbone, calculating how the user's jawbone gradually moves from the initial position to the target position or several intermediate positions of the jawbone near the target position, and arranging teeth at each jawbone position to obtain a head model corresponding to each jawbone position after tooth arrangement; wherein the jawbone position is either the intermediate position of the jawbone or the target position of the jawbone; selecting a head model that meets preset conditions from the head models corresponding to each jawbone position; and designing a treatment plan based on the head model that meets the preset conditions.

This disclosure relates to a device, method, equipment, storage medium, and program product for identifying abnormal development of the maxillofacial region in children. The device includes: a three-dimensional image registration module for performing global rigid registration and local non-rigid registration of three-dimensional images of facial soft tissue and jawbone; a geometric and visual feature extraction module for inputting spatially aligned three-dimensional images of facial soft tissue and jawbone into a hybrid neural network to obtain geometric and visual features; a geometric and visual feature fusion module for inputting geometric and visual features into an attention-based feature fusion network to obtain maxillofacial fusion features; and a child maxillofacial abnormal development identification module for inputting the maxillofacial fusion features into a child maxillofacial abnormal development identification model to obtain the identification result of child maxillofacial abnormal development. This reduces the user experience requirement, avoids the influence of subjective factors, and identifies early and subtle abnormalities.

The utility model discloses a kind of implant device suitable for mouse mandibular first molar, it is related to biomedical engineering field, provide a kind of implant device suitable for mouse mandibular first molar, including handle and the implant of being connected with handle, the implant includes the push rod being connected with handle and the implant nail being connected with push rod, connecting rod is equipped between push rod and implant nail, facilitating breaking down. The utility model is easy to operate, without jaw bone preparation hole, after removing 4 weeks old mouse mandibular first molar, manually implanting implant in distal root alveolar crypt, it can break under suitable torque, reduce operation time and mouse postoperative recovery time, improve experimental efficiency and success rate.

This invention relates to the field of orthodontics, and discloses a method, device, and storage medium for designing a combined orthognathic and orthodontic treatment plan. The method involves obtaining an initial head model of the user; the position of the jawbone in the initial head model is the initial position of the jawbone; obtaining the target position of the user's jawbone; based on the initial head model, calculating several intermediate positions of the jawbone from the initial position to the target position, arranging teeth at each jawbone position, and obtaining a head model corresponding to each jawbone position after tooth arrangement; the jawbone position is either the intermediate position or the target position; selecting a head model that meets preset conditions from the head models corresponding to each jawbone position; and designing a treatment plan based on the head model that meets the preset conditions. This invention combines the orthognathic treatment effect at different stages with the orthodontic effect to obtain a comprehensive treatment effect, reducing communication time between orthodontists and orthognathic surgeons, and quickly providing a treatment plan that meets the needs of combined treatment.

[Problem] To provide a novel technology that can be used to assist treatment such as orthodontic treatment. [Solution] This dental treatment assistance system comprises: a measurement point information acquisition unit that acquires measurement point information indicating a measurement point for orthodontic diagnosis on the basis of an image obtainable by X-ray imaging of the head of a subject, a magnetic resonance image of the head of the subject, or an image obtainable by computer tomographic imaging of the head of the subject; a position information acquisition unit that, on the basis of the head measurement point information, acquires position information during imaging indicating the positions of a front tooth, a molar or the jawbone of the subject during imaging; a planned position information acquisition unit that acquires planned position information indicating the position when it is assumed that the tooth or the jawbone is moved; and a movement information generation unit that, on the basis of the measurement point information, the position information during imaging, and the planned position information, generates movement information indicating a movement amount from the position before movement when it is assumed that the front tooth, the molar, or the jawbone is moved.

The application provides a temporomandibular joint distraction soft tissue traction device, which comprises an X-axis connecting mechanism and a Y-axis adjusting mechanism, the X-axis connecting mechanism further comprises an arch strip, an abutment structure and an arc-shaped abutment distraction mechanism for hooking the patient's jaw bone, the arch strip is vertically connected with the Y-axis adjusting mechanism, the abutment structure comprises two independent ladder blocks arranged above the arch strip, the upper surfaces of the two independent ladder blocks are sequentially provided with a U-shaped support for clamping sliding, a sliding rod, a clamping buckle and a limiting hole, wherein the U-shaped supports are respectively installed at the upper ends of the two independent ladder blocks, and the arch strip and the abutment structure are adopted to promote the middle-aged and old patients suffering from temporomandibular joint osteoarthritis to seek medical treatment, and an operable space is established during the open surgery of the temporomandibular joint (similar to the state of the bag opening being adapted), and the load bearing rod, the clamping buckle, the sliding rod and the specific sliding structure state can be used for the distraction of the temporomandibular joint region.

The invention discloses an alpha-ketoglutaric acid functionalized hydrogel and application thereof in maxillofacial bone defect repair, and belongs to the technical field of biomedical materials. The hydrogel is constructed by crosslinking four-arm polyethylene glycol-sulfydryl and alpha-ketoglutaric acid through a Fe < 3 + > coordination bond. The hydrogel prepared by the invention has good mechanical properties, self-healing ability and inflammatory microenvironment responsive drug release characteristics, and can synergistically promote osteogenic differentiation of bone marrow mesenchymal stem cells, induce M2 polarization of macrophages and remove active oxygen, thereby optimizing a bone regeneration microenvironment. In-vivo experiments prove that the hydrogel can significantly promote the formation of new bones of a mouse jaw defect model. The invention provides a novel and efficient material solution for regeneration and repair of maxillofacial bone defects.