40 results about "Mandibular body" patented technology

The invention discloses a lower jaw sagittal splitting osteotomy positioning guide plate. Comprising a lower supporting type positioning guide plate, a middle occlusion positioning plate and an upper supporting type positioning guide plate which are sequentially connected through connecting rods, wherein the lower supporting type positioning guide plate is manufactured according to the outer side form of a lower jaw body part; the middle occlusion positioning plate is manufactured according to first molars and first premolars of a patient; the upper supporting type positioning guide plate is manufactured according to the outer side form of a lower jaw ramus; the upper supporting type positioning guide plate extends towards the inner side of the mandibular branch to form a mandibular branch inner side horizontal osteotomy guide rod set according to the position of a small tongue of the mandibular branch, and the lower end of the lower supporting type positioning guide plate is provided with a lower edge supporting type positioning guide plate manufactured according to the shape of the lower edge of the mandibular branch. The lower supporting type positioning guide plate is provided with a vertical osteotomy guide groove which is designed and manufactured according to an operation. According to the guide plate, the osteotomy and reduction process in the sagittal split operation of the lower jaw is more accurate through accurate design and positioning, inferior alveolar nerves can be effectively protected, the postoperative stability is improved, compared with the prior art, the safety, accuracy and efficiency of the operation are remarkably improved, risks in the operation are reduced, and the operation cost is reduced. The important clinical application value is realized.

The invention provides a temporomandibular artificial joint replacement device, a preparation method and a surgical robot system.The temporomandibular artificial joint replacement device is characterized in that a mandibular fixing support is fixedly connected with the outer side face of the mandible of the human body, a temporal bone fixing support is fixedly connected with the outer side face of the temporal bone of the human body, a containing cavity is formed in a glenoid fossa liner, and a spherical joint head is movably arranged in the containing cavity; a base layer, a variable-rigidity elastic buffer layer and a surface layer are sequentially arranged on the inner wall of the containing cavity in the thickness direction of the side wall of the glenoid fossa liner. By means of the temporal-mandibular artificial joint replacement device, efficient simulation of the temporal-mandibular joint replacement device on a real human body temporal-mandibular joint structure can be achieved, the structural strength and the use comfort of the temporal-mandibular artificial joint replacement device are improved, and based on artificial intelligence and a surgical robot auxiliary technology, the device is simple in structure and convenient to use. The preparation function of the temporomandibular artificial joint replacement device matched with the human tissue structure and the automatic assembly surgical operation are achieved.

A test bench (100) for mechanical testing of a subperiosteal implant (810), wherein the subperiosteal implant (810) is provided with at least one superstructure, the test bench (100) comprising: a machine frame (200), a mandibular model (800) to which a subperiosteal implant (810) is fixable, and at least one force measuring unit (700) that is connected at one end to a load-bearing plate (710) fixed to the machine frame (200) and can be releasably connected at its other end to at least one test location (P) of the subperiosteal implant (810) for force measurement. The test bench (100) is characterised by further comprising a first shaft (613) that is rotatably connected to the machine frame (200) via at least a first bearing (612) such that it defines a first rotational axis (614), a second shaft (623) that is rotatably connected to the machine frame (200) via at least a second bearing (622) such that it defines a second rotational axis (624), wherein the mandibular model (800) is attached to the first shaft (613) and to the second shaft (623) at two, first and second, mandible head portions (801, 802) thereof for rotation about the first rotational axis (614) and the second rotational axis (624), at least one control and command unit (300) that is mounted on the machine frame (200) and has at least two, first and second, pneumatic cylinders (400, 500) provided with a first and a second piston rod (410, 510), wherein the at least two, first and second, pneumatic cylinders (400, 500) are arranged above the mandibular model (800), and wherein the control and command unit (300) is in operative connection with the first and second pneumatic cylinders (400, 500) such that it is able to exert a force of a given magnitude on the first and second piston rods (410, 510) to move them in a vertical direction, at least two, first and second, displacement measuring units (460, 560) mounted on the first and second pneumatic cylinders (400, 500) such that they are able to measure the vertical-direction displacement of the first and second piston rods (410, 510) of the first and second pneumatic cylinders (400, 500); at least two, first and second, resilient members (450, 550) with a strap-like configuration that are connected to the respective lower ends of each of the first and second piston rods (410, 510) by means of a first and a second connection member (430, 530) such that the first and second resilient members (450, 550) support the mandibular model (800) by forming a loop around both sides thereof; wherein the at least one, first and second resilient members (450, 550) are operatively connected to the control and command unit (300) by way of being connected to the first and second piston rods (410, 510), and thus they are able to apply a tensile load to the mandibular model (800). The method according to the invention is carried out applying a system according to the invention.

The application discloses a path planning method for subcutaneous deep layer injection of a mandible, which comprises the following steps: determining a target region of a subcutaneous deep layer which needs to be filled or improved in contour based on three-dimensional anatomical data of a mandible; the subcutaneous deep layer refers to a loose connective tissue gap between a subcutaneous fat layer and an upper periosteum layer; planning a main path which is substantially parallel to a baseline of a lower edge of the mandible or substantially coincides with a preset mandible contour line in the target region; the main path is located in the subcutaneous deep layer; planning a plurality of branch injection paths based on the main path; the starting points of the branch injection paths are distributed at intervals along the main path and extend alternately to the outside of both sides of the main path; and all the paths form a wheat ear-shaped topological structure with the main path as a central axis and the branch injection paths extending to both sides. The method effectively avoids excessive concentration of fillers in any dimension, thereby significantly reducing the swelling degree of local tissues caused by pressure concentration and being beneficial to shortening the recovery time.

Provided is a cosmetic mask that provides effective stimulation to a correct position and has a tightening effect. A beauty mask, which is worn on the face of a user and can cover at least cheeks, is provided with a pair of stimulation bodies that provide electrical or ultrasonic stimulation to a region corresponding to at least one of cheekbone muscles and masseter muscles of the user. A stimulator attachment part for attaching a stimulator to a cheek position may be provided, and at least a portion of the stimulator may be removably configured. The nose pad part is consistent with the convex shape of the nose; left and right wearing bodies which are worn while applying tension to the left and right sides of the face; the upper and lower wearing bodies are worn while providing pulling force from the lower surface of the mandible to the top of the head through the two sides of the face.

An electroactive titanium support-reinforced composite film includes a titanium support and a film material coating the titanium support. The titanium support has a structure designed according to securing sites. The electroactive titanium support-reinforced composite film of the present invention can be bent and shaped for a close fit with a hard tissue, has excellent mechanical performance and a stable electroactive bending strength of bionic magnitude, and can prevent the collapse of surrounding tissues and tissue adhesion, effectively maintain a three-dimensional space for bone osteanagenesis and effectively promote bone injury healing, featuring ease and convenience of clinical operation and capability of promoting bone marrow mesenchymal stem cell adhesion, cytoskeleton rearrangement and induced osteogenic differentiation. The support-reinforced composite film is suitable for mandible or cranium injury repair in different ranges and has significant efficacy for clinical indications such as alveolar bone vertical bone augmentation and alveolar ridge preservation after tooth extraction.

The invention relates to an adjustable parotid gland pressurizing and fixing device, which belongs to the field of parotid gland pressing devices. In order to solve the problem that the existing parotid gland pressurizing device needs to put a bandage on the mandible for fixation in order to better fix the pressurized gauze on the parotid gland, and the patient's mandibular joint often needs to move due to talking, eating, etc., which causes the bandage to compress the mandible, wear and swelling of the subchin skin, and the bandage is easy to loosen, resulting in poor pressurizing effect, which is easy to cause complications such as salivary fistula and parotid fistula. The invention provides an adjustable parotid gland pressurizing and fixing device, which uses a back neck support to support the patient's neck and will not cause wear and swelling to the patient's mandibular skin. Through the coordinated use of a fixing sleeve, a screw and a cheek pressing air cushion, the pressure of the pressurized air bag on the parotid gland affected area is adjusted to reduce the incidence of complications caused by insufficient pressure. The multi-stage connecting rod, the adjusting rod and the cheek pressing air cushion unit with interchangeable sizes have a wider range of applications while enhancing stability and better meet the needs of different users.

The utility model provides an upper respiratory tract simulation training model, which comprises a bottom plate, a connecting assembly and a training assembly, and is characterized in that the top of the bottom plate is fixedly connected with a first fixing block; the connecting assembly is arranged on one side of the first fixing block and comprises a chest shell, a cervical vertebra body and an occipital bone. According to the upper respiratory tract simulation training model, a real human anatomical structure is restored through the cervical vertebra body, the occipital bone, the airway, the mandible and the like, the upper respiratory tract structure is convenient to learn and understand, the structure part is provided with a normal version and a lesion version, the mandible shell can be pulled outwards, an instrument can enter a correct position conveniently, and the training efficiency is improved. Under the action of a first fixing block and a bottom plate, actual operation training of a laryngeal mask and a laryngoscope is facilitated, under the action of a second fixing block and the bottom plate, an occipital bone, a front skull, a cervical vertebra body and the like are conveniently driven to be subjected to angle fixation, body position adjustment needed during operation is facilitated, and use flexibility is enhanced.

The invention relates to the technical field of traditional Chinese medicine acupoint massage, and discloses a combined acupoint massage method for the throat part, which comprises the following steps: S1, transversely pushing the front lateral line of the neck from the joint of the upper end of the human Yingxiang acupoint and the mandible along one side of the neck by using the finger pulp of the thumb or the index finger and the middle finger; downwards, linearly and transversely pushing to the joint of the lower section of the Qihui acupoint and the clavicle with soft and deep force; according to the combined acupoint massage method for the throat, the limitation of a single acupoint is broken through, multiple areas such as the anterior neck and the suprasternal fossa and easily-neglected parts are covered, and comprehensive conditioning of related tissues of the throat is achieved; all the steps cooperate to perform precise intervention, relieve mucous membrane hyperemia, improve foreign body sensation and the like, the throat pain symptom is completely relieved, the method is safe and convenient, and the problems that an existing method is poor in curative effect and not thorough are solved.

A mandible reconstruction and dental implant system includes a first reconstruction template, including a body, a first cutting guide and a second cutting guide, a first plantar plate slot template disposed along the body, the first plantar plate slot template being an opening configured to receive a drill therein, a first bone fastener template disposed along the body, the first bone fastener template being an opening configured to receive the drill therein, and a first implant template disposed along the body and aligned with the first plantar plate slot template, the first implant template being an opening configured to receive a drill therein, an axis through the first implant template being orthogonal to an axis through the first plantar plate slot template; and a reconstruction plate, including a main bracket, and a first plantar plate protruding orthogonally from the main bracket, the first plantar plate including an aperture.

The utility model relates to the technical field of medical instruments, and discloses inferior alveolar nerve block anesthesia injection auxiliary equipment, which is beneficial for medical staff to timely and accurately find a needle insertion point for inferior alveolar anesthesia by arranging a positioning ball and a guide cylinder; when the inferior alveolar anesthesia is carried out, the patient expands the mouth to expose the mandible condyle process (the needle insertion point position during the inferior alveolar anesthesia) near the anterior notch of the tragus, and the positioning ball is pressed against the convex part of the mandible condyle; a medical worker holds the auxiliary equipment by hand, the other hand inserts an injector into the guide cylinder, and due to the fact that the axial extension line of the guide cylinder passes through the center of the positioning ball, the medical worker can quickly find and position a needle inserting point in an oral cavity under the guidance of the guide cylinder; the operation difficulty is lowered, meanwhile, the requirement for personal skills of medical staff is lowered, the one-time success probability of anesthesia is improved, and the situation that a patient suffers from unnecessary pain due to multiple anesthesia failures is avoided.

The invention relates to a massager for dislocated cervical facet joints. In order to solve the problem that the current products surround the neck, in order to achieve the distance between the cervical joints and restore them to the correct position, they must move up and down together with the mandible, and the flexible mandible has a large range of up and down movement after being stressed, and it is difficult to coordinate with the cervical joints. Therefore, satisfactory treatment effect cannot be achieved. The massager comprises a head support, a neck bracket, a telescopic bracket, an adjustment bracket and a massage mechanism. The design has a simple manufacturing process and a low cost. While saving the manufacturing cost, more people can afford it. The interval between the head support and the neck bracket is adjustable to adapt to people with different neck lengths and thicknesses. The tail of the neck bracket, i.e., the neck end, is provided with an adjustment bracket, which is more in line with ergonomics and abuts against a neck position fixing device to ensure that the device will not fall off. The massage mechanism follows the direction of manual massage, which is more in line with traditional Chinese medicine techniques and has better effects.

The invention relates to the technical field of medical instruments, in particular to a temporal-mandibular joint anterior baffle prosthesis with a porous structure, which comprises a baffle plate, a lateral cranium fixing wing and a zygomatic arch fixing wing which are respectively fixed on a temporal bone scale part and a zygomatic arch, and the bottom of the baffle plate is a cambered surface and is used for fitting and limiting excessive forward movement of a mandibular condyle process. The whole prosthesis is made of a titanium alloy and PEEK composite material, and is provided with a bionic bone tissue porous structure and through holes which are distributed all over the whole, so that the lightweight structure is realized, the bone compatibility is improved, and the osseointegration is promoted. The problems that an existing prosthesis is large in weight, poor in bone compatibility, prone to causing bone degeneration and the like are solved, the prosthesis has the advantages of being light in weight and good in biocompatibility, the comfort and the osseointegration effect are improved, and postoperative discomfort and secondary operation risks of a patient can be effectively reduced.

An assembly (37) for use in ventilating a subject using a laryngeal mask (5) comprises a head-mounted harness (39) and a pusher (41). The harness is arrangeable on the subject's head (H) to support the pusher to press against the subject's (P) floor of the mouth (15). The pusher comprises laterally opposite protrusions to displace, in use and with the harness operatively supported on the subject (P), the subject's soft tissue at the left and right submandibular trigonum relative to the subject's mandible (29) and the subject's surrounding tissue (e.g. submental trigonum) in a cranial direction for pushing the subject's internal soft tissue towards the laryngeal mask in the subject's airway when the laryngeal mask is installed in the subject's airway. Each protrusion or the entire pusher is hollow, providing a recess for accommodating an operator's finger.

The invention provides a chin forming guide plate system for changing the short and flat state of the chin and a manufacturing method thereof.The chin forming guide plate system comprises an osteotomy guide plate and a positioning guide plate, and the osteotomy guide plate comprises a first positioning hole, a second positioning hole and a third positioning hole; a first positioning hole, a second positioning hole and a third positioning hole are formed in the lower jaw fixing area, cutting guide paths of a first osteotomy bone block, a second osteotomy bone block and an osteotomy removal bone block are limited, and the first positioning hole, the second positioning hole and the third positioning hole correspond to connecting hole positions in the first osteotomy bone block, the second osteotomy bone block and the lower jaw fixing area respectively; the positioning guide plate is used for limiting the cut first osteotomy bone block and the cut second osteotomy bone block at target positions according to an operation plan, and comprises a fourth positioning hole, a fifth positioning hole and a sixth positioning hole; the fourth positioning hole, the fifth positioning hole and the sixth positioning hole correspond to connecting hole positions in the first osteotomy bone block, the second osteotomy bone block and the lower jawbone retention area respectively.

A method of superficial fat pad repositioning is disclosed in which three lifting vectors are established which synergistically cooperate to produce an enhanced lifting effect. A first lifting vector is substantially vertical and originates in the superficial orbital fat pad. A second lifting vector is oblique and originates below the nasolabial fold. A third lifting vector is also oblique and originates below the mandible. In a preferred embodiment, monofilament threads are utilized to establish each lifting vector.

The application discloses a model for predicting the risk of temporomandibular joint disorder after mandibular defect repair and a construction method thereof, and belongs to the technical field of medical artificial intelligence and clinical decision support. The method comprises the following steps: multi-dimensional quantitative collection of clinical data, acquisition of preoperative baseline indexes, intraoperative reconstruction structure parameters and postoperative follow-up compensation indexes; screening of key risk indexes and construction of a prediction function, a two-stage feature selection strategy is adopted to construct a nonlinear prediction model; model verification and correction, time stratified cross-validation is performed by adopting a time sequence sample division strategy to ensure the time sequence generalization ability of the model; and prediction tool deployment, the model is packaged as a clinical decision support tool to output individualized risk classification and early warning. Through systematic integration of multi-dimensional risk factors, the application realizes accurate prediction and early warning of the risk of temporomandibular joint disorder after operation, significantly improves the early identification rate and intervention accuracy, and has important clinical transformation value.

The invention discloses a novel coaxial electrostatic spinning stent coupling piezoelectric stimulation and AVT, the morphology of the stent simulates an extracellular matrix, adhesion, growth and differentiation of cells are facilitated, and a space is provided for growth of new blood vessels and new bones; the coaxial electrostatic spinning stent takes an artificial high polymer material as a matrix, is good in biological safety and can be degraded in vivo, and a degradation product is non-toxic; a clinical drug AVT for promoting angiogenesis is loaded in a fiber shell layer, and the defects that various angiogenesis promoting factors are high in price, short in half-life period, insufficient in potential safety and the like are overcome; the piezoelectric material ZnO for promoting osteogenic differentiation is loaded on the fiber core layer, various defects of external electrical stimulation equipment are avoided, the osteogenic differentiation is continuously promoted by collecting masticatory muscle force and converting the masticatory muscle force into piezoelectric stimulation, meanwhile, angiogenesis is promoted in combination with early release of AVT, and finally, vascularized bone regeneration of lower jawbone defects is promoted. According to the invention, the source of required materials is sufficient, the preparation technology is simple, the cost is low, the biological safety is good, and the potential clinical application prospect is achieved.

The application relates to the technical field of medical image processing, and provides a target lesion identification method and system based on medical images, which solves the problems of limited and unstable lesion identification precision. The method comprises the following steps: acquiring a cone beam CT image of a mandible before oral implantation and reference gray data; performing metal artifact reduction and adaptive histogram equalization algorithm enhancement processing with limited contrast to obtain an enhanced image; extracting a three-dimensional gray histogram of an implant target area to calculate gray skewness and gray kurtosis, and extracting a texture feature set; performing principal component analysis on the texture feature set to obtain principal component features, and splicing the principal component features with the gray skewness and the gray kurtosis into a fusion feature vector; analyzing the vector by using a density peak value clustering algorithm, and mapping the result to an anatomical partition, and performing Z-score testing in combination with the reference gray data to identify a bone lesion area. The application can realize accurate and automatic positioning of a lesion.

The invention relates to a system for detection of a sleep event of a subject. In an aspect of the invention the system comprises a sensing unit configured for mounting on the mandible, a data analysis unit, and a data link. The sensing unit comprises a gyroscope and an accelerometer configured to measure mandibular and head movements. A data analysis unit receives timestreams of rotational and acceleration data and identifies signals characteristic of sleep events. These can include frequency-based and positional / movement-based signals and a third signal representing a change in mandibular or head position. A memory stores classes of mandibular movements, each defined by sets of rotation and acceleration values. A sampling element samples both data streams during the same sampling period. The analysis unit derives measured values from the sampled data, matches them to movement classes indicative of sleep events, and generates diagnostic information for diagnosing a sleep disorder.

The invention discloses a wearable fixing clamp for correcting the lower jawbone. The wearable fixing clamp comprises a side edge adjusting and correcting assembly, a supporting and adjusting assembly, a face proportion comparison net cover, a bottom connecting frame, a lifting adjusting connecting rod and a top head cover. The invention belongs to the technical field of mandible correction appliances, and particularly relates to a wearable fixing clamp for correcting a mandible. In order to solve the problem that an existing wearing type fixing clamp for the mandible easily causes large discomfort of a patient, the side edge adjusting and correcting assembly and the supporting and adjusting assembly are provided, the comfort of the patient during wearing is improved through a soft cushion on a mandible swinging clamping plate, and when the mandible of the patient needs to be corrected locally, the supporting and adjusting assembly is used for adjusting the mandible. According to the scheme, automatic pressure applying on the lower jaw protruding part of the patient is achieved through the side edge adjusting correcting assembly, so that automatic correction in the specific direction is conducted on the lower jaw protruding part, and when deviation of the lower jaw protruding part of the patient is reduced, the side edge contact correcting pad does not apply pressure to the lower jaw protruding part of the patient any more, and the side edge contact correcting pad is taken down from the lower jaw of the patient.

The invention discloses a guide plate system for an artificial temporomandibular joint replacement surgery, and relates to the technical field of artificial temporomandibular joint replacement surgeries, the guide plate system comprises an osteotomy guide plate and a positioning guide plate, the osteotomy guide plate is provided with a first binding face attached to a lower jawbone ramus trailing edge anatomical structure so as to be capable of being attached and fixed to the lower jawbone ramus trailing edge anatomical structure, and the positioning guide plate is provided with a second binding face attached to the lower jawbone ramus trailing edge anatomical structure; the osteotomy guide surface is used for guiding osteotomy operation so as to guide lineation osteotomy; the positioning guide plate is provided with a second attaching face attached to the anatomical structure of the mandibular angle so that the positioning guide plate can be attached and fixed to the anatomical structure of the mandibular angle, and the prosthesis guide part is used for guiding the prosthesis to be in place, so that the operation accuracy, safety and efficiency are effectively improved.

The present invention discloses a novel mandibular prosthesis based on 3D printing, which includes a prosthesis main body, an implant abutment, and a fixing component. The implant abutment is arranged on the top surface of the prosthesis main body, and the fixing component is used to connect the prosthesis main body with the first and second mandibles. The fixing component includes a fastening screw, an embedded nut, and an expansion sleeve. Reserved holes are formed on the contact surfaces of the first and second mandibles and the prosthesis main body. The expansion sleeve is placed in the reserved holes, and the embedded nut is screwed into the expansion sleeve. And the expansion sleeve deforms under the extrusion of the embedded nut so as to be tightened in the reserved holes. Connecting holes are arranged on both sides of the prosthesis main body corresponding to the reserved holes. The fastening screw is screwed into the connecting holes, and the end of the fastening screw is fixedly connected with the embedded nut. By utilizing the characteristics of 3D printing technology, the present invention can reasonably design the structures of the mandibular prosthesis fixing device and the implant abutment, with simple structure, quick installation, good stability, and at the same time can improve the convenience and success rate of the operation.

The present invention relates to a bionic articulator, comprising an upper jaw body and a lower jaw body, wherein condylar grooves are respectively arranged on both sides of the lower jaw body, and a protruding condylar guide angle is set in the condylar grooves, and condylar balls are respectively arranged on both sides of the upper jaw body, and the condylar balls are movably assembled with the condylar grooves; a rotatable central lock is assembled in the condylar groove, and a guide groove is arranged at one end of the condylar groove, and the central lock has an inwardly concave arc surface, when the central lock rotates into the guide groove and snaps into the guide groove, the arc surface no longer blocks the condylar ball, and the condylar ball can slide along the condylar groove at the protruding condylar guide angle, and the lower jaw body can simultaneously rotate and translate relative to the upper jaw body; when the central lock rotates outside the guide groove, the arc surface can block the condylar ball from sliding along the condylar groove and remain in the initial position, and the lower jaw body can only rotate relative to the upper jaw body. The present invention has two functional modes of morphological structure and functional movement of a real simulation oral and maxillary system, and can better meet teaching needs.

The present invention provides a temporomandibular joint prosthesis that can reduce the risk of joint dislocation and improve comfort, and relates to the field of prosthesis technology. The temporomandibular joint prosthesis includes a joint prosthesis and a mandibular ramus prosthesis; the joint prosthesis includes a condylar fossa portion extending to the mandibular ramus and a fixing plate for fixing the condylar fossa portion, the outer side surface of the condylar fossa portion is provided with a groove for hanging the mandibular ramus prosthesis, and the groove forms a condylar fossa; the mandibular ramus prosthesis includes a condylar head rotatably matched with the condylar fossa and a mandibular ramus fixing handle connected to the mandible, the condylar head is fixed to the inner side of one end of the mandibular ramus fixing handle connected to the joint prosthesis, and the condylar head forms a hook structure for hanging the mandibular ramus fixing handle and the condylar fossa; the mandibular ramus fixing handle can be rotatably hung in the condylar fossa through the condylar head. The movement of the prosthesis of the present invention is also more precise and more comfortable.

The invention discloses a design method of a vascularization-promoting mandible implant with a controllable functional gradient. According to the method, mechanical properties and permeability of different types of TPMS structures are analyzed, compared and optimized, and a polymorphic fused TPMS structure is created. Therefore, the implant is based on the TPMS unit, different pore structure types and pore sizes are adopted in the z-axis direction according to different requirements, and functional gradient controllable change is achieved; the implant has the advantages of strong pore connectivity, high permeability and large specific surface area, and is favorable for guiding the growth of blood vessels implanted in the body; stress stimulation can be conducted, so that favorable conditions are provided for adhesion proliferation of bone cells; and meanwhile, the implant is matched with the defective mandible in appearance, so that the natural appearance of the mandible of the patient can be recovered.

The utility model relates to the field of jaw joint treatment, in particular to a temporomandibular joint training teaching aid model which comprises a model body, a temporal bone mimicry part, a temporal bone mimicry part, a mandible mimicry part, a joint capsule module detachably mounted on the temporal bone mimicry part and used for simulating a mandible, and a joint capsule module detachably mounted on the mandible mimicry part and used for simulating the mandible. The mimicry mandible is rotatably connected with the joint capsule module through the rotating shaft, so that the mimicry mandible part can rotate relative to the joint capsule module. By arranging the mimic temporal bone part, the mimic mandibular bone part and the joint capsule module, all joints which may be involved in the original temporal-mandibular joint operation process are modularized, and a user can place all the joints on the model body according to own requirements. Meanwhile, the joint capsule module serving as a main object of operation training can be independently replaced after training is completed, other parts do not need to be replaced, and the teaching cost is effectively reduced.

The preparation method of the europium-doped black phosphorus nanosheet deposition customized porous TMJ prosthesis comprises the following steps: S1, shooting medical image data by using CBCT (Cone Beam Computed Tomography), importing the medical image data into Mimics software for model reconstruction, and importing a reconstructed model into Geomagic software for simulating osteotomy to obtain a cranio-maxillofacial model STL (Standard Template Library) file; s2, performing TMJ prosthesis customization design on the STL file of the craniomaxillofacial model; s3, performing 3D printing on the customized TMJ prosthesis model by adopting an SLM printing technology to obtain a prosthesis entity; and S4, constructing a polydopamine europium-doped black phosphorus nanosheet surface coating on the porous area of the prosthesis entity model. The computer-aided design and the three-dimensional printing technology are adopted, and product customization is achieved; the europium-doped black phosphorus nanosheet coating is constructed in the porous area of the prosthesis, bone ingrowth of the mandible stump and the buccal side area is promoted, traditional two-dimensional fixation is changed into three-dimensional fixation, and the limitation of screw loosening, falling and bone resorption is avoided.

Temporomandibular joint prosthesis (90, 902) comprising a first element (30, 302) attachable to a first side of the mandible (40) and a second element (80, 802) attachable to the first side of the cranium (50), wherein a condylar head (42, 422) is formed at one end of the first element (30, 302), wherein an articular surface (82) is formed on the second element (80, 802) which forms a counter-bearing of the condylar head (42), wherein the condylar head (42, 422) and the articular surface (82, 822) predefine an axis of rotation (A1, A2), wherein the first element (30, 302) and the second element (80, 802) are shaped such that the axis of rotation (A1, A2) is pre-oriented obliquely to a frontal plane (F) of the patient in the implanted state. as well as kit (K) consisting of two such temporomandibular joint prostheses (90, 902).

A mandible reconstruction and dental implant system includes a first reconstruction template, including a body, a first cutting guide and a second cutting guide, a first plantar plate slot template disposed along the body, the first plantar plate slot template being an opening configured to receive a drill therein, a first bone fastener template disposed along the body, the first bone fastener template being an opening configured to receive the drill therein, and a first implant template disposed along the body and aligned with the first plantar plate slot template, the first implant template being an opening configured to receive a drill therein, an axis through the first implant template being orthogonal to an axis through the first plantar plate slot template; and a reconstruction plate, including a main bracket, and a first plantar plate protruding orthogonally from the main bracket, the first plantar plate including an aperture.