27 results about "Upper Jaw Tooth" patented technology

The invention relates to the technical field of orthodontics, and discloses a design method of an invisible tooth socket for correcting locking teeth, which comprises the following steps: generating a digital dental model through dental scanning data; on the basis of a digital tooth jaw model, an orthodontic locking tooth invisible tooth socket with an unlocking state is designed, the orthodontic locking tooth invisible tooth socket comprises a tooth socket body, the tooth socket body is provided with a functional part corresponding to the position of the tooth in the locking state, and the functional part is used for driving one or more teeth in the locking state to move to the normal position; a first supporting part and a second supporting part of the invisible tooth socket for correcting and correcting the locking teeth are determined, the first supporting part is arranged on the tooth socket occlusal surface adjacent to the functional part, the second supporting part is arranged on the side, opposite to the first supporting part, of the tooth socket occlusal surface, the tooth socket occlusal surface corresponds to the occlusal surface of the teeth, and the second supporting part is arranged on the side, opposite to the first supporting part, of the tooth socket occlusal surface; the first supporting part and the second supporting part are used for supporting the occlusal surface of the upper jaw tooth socket body and the occlusal surface of the lower jaw tooth socket body for a certain distance.

The invention relates to the technical field of oral medical instruments, and particularly provides a customized joint jaw position appliance and a manufacturing method thereof.The customized joint jaw position appliance comprises an appliance body, the appliance body comprises an upper jaw tooth occlusion sleeve and a lower jaw tooth occlusion sleeve, and a first occlusal surface of the upper jaw tooth occlusion sleeve is effectively occluded with a second occlusal surface of the lower jaw tooth occlusion sleeve; the guide inclined surface is arranged on the inner side of the anterior tooth area of the appliance body; the upper jaw blocking body and the lower jaw blocking body are respectively arranged on an occlusal surface, a cheek side surface or a lingual side surface of a premolar region on two sides of the upper jaw tooth occlusal sleeve and the lower jaw tooth occlusal sleeve; the upper jaw blocking table and the lower jaw blocking table are respectively arranged on the occlusal surface, the cheek side surface or the tongue side surface of the molar areas on the two sides of the upper jaw tooth occlusal sleeve and the lower jaw tooth occlusal sleeve, and are integrally connected with the appliance body to form a first occlusal surface and a second occlusal surface. According to the customized joint jaw position appliance, the disc-condylar relationship can be more accurately recovered according to the displacement condition of the joint disc of a patient through double-jaw coordination and multi-region blocking design, the treatment period is shortened, and the prognosis stability is improved by matching with a chewing function.

The utility model discloses a dental system which comprises a force application platform with a first action point, a second action point which is arranged at an interval with the force application platform, and a connecting piece which is connected with the first action point and the second action point, when the dental system is worn in an oral cavity, maxillary teeth and mandibular teeth clamp the force application platform, and the force application platform is connected with the connecting piece. The second point of action directly or indirectly contacts the teeth, and the connector generates an acting force between the first point of action and the second point of action. The force application platform is clamped between the upper jaw teeth and the lower jaw teeth, extra discomfort cannot be brought to a patient, the position of the force application platform in the oral cavity is stable, anchorage can be effectively increased, and stable acting force can be provided.

The invention provides a computer-implemented method for determining the occlusion relationship of three-dimensional digital models of maxillary and mandibular dentitions based on tooth photos, which comprises the following steps: acquiring a first photo of teeth of a patient in an occlusion state, the first photo comprising a plurality of maxillary teeth and a plurality of mandibular teeth; obtaining a first three-dimensional digital model and a second three-dimensional digital model respectively representing the upper jaw dentition and the lower jaw dentition of the patient; rendering the first three-dimensional digital model and the second three-dimensional digital model to obtain a first rendering graph; predicting an optical flow between the first photo and the first rendering graph by using a trained optical flow neural network based on the first photo and the first rendering graph; and based on the optical flow, calculating a first spatial position transformation relationship which can transform the relative position relationship between the first and second three-dimensional digital models to a state closer to the bite state shown by the first photograph, with a solution to solve the PnP problem, and calculating a second spatial position transformation relationship which can transform the relative position relationship between the first and second three-dimensional digital models to a state closer to the bite state shown by the first photograph.

The invention discloses a complete denture generation method, device and equipment and a storage medium. The complete denture generation method comprises the following steps: acquiring a plurality of tooth feature points; determining a target false tooth model closest to the current patient in a false tooth model library; and determining an upper and lower jaw anterior tooth occlusion relationship of the target false tooth model. Determining the occlusal relationship between upper and lower jaw posterior teeth of the target false tooth model; determining an upper jaw tooth arrangement termination line and a lower jaw tooth arrangement termination line of the target false tooth model; and based on the adjustment information, finely adjusting the occlusion relationship between the upper and lower jaw anterior teeth, the occlusion relationship between the upper and lower jaw posterior teeth, the upper jaw tooth arrangement termination line and the lower jaw tooth arrangement termination line, and determining the final complete denture. Therefore, a target denture model closest to the anterior tooth arrangement information of the current patient is determined in a denture model library, and the target denture model is further adjusted based on the anterior tooth occlusion relation between the upper jaw and the lower jaw, the posterior tooth occlusion relation, the upper jaw tooth arrangement termination line and the lower jaw tooth arrangement termination line of the current target denture model, so that a final complete denture is obtained.

The present application provides a kind of dentition correction mouthpiece and its manufacturing method, which can be used for dental correction.The manufacturing method needs to obtain the tooth position configuration map of upper jaw and lower jaw, read and display the tooth position configuration map by dental software, connect the multiple fossae of upper jaw teeth into the arc line of upper occlusal line, connect the multiple cusps of lower jaw teeth into the arc line of lower occlusal line, generate a correction arc line through the upper and lower occlusal lines, then generate the upper jaw correction slot and the lower jaw correction slot corresponding to the cuspid-fossa, and finally generate the upper and lower jaw corresponding parts of the dentition correction mouthpiece to correct the problem of misaligned dentition of dental patients.

To provide an improved mouthguard A that allows users to drink water without using their hands while wearing it in their mouth, even while riding a motorcycle, bicycle, or other vehicle. [Solution] The present invention provides an improved mouthguard that allows drinking water to be performed while being worn in the mouth of a person, comprising a mouthguard body 1 that abuts against the upper jaw teeth and a water passage 2 attached to the mouthguard body 1, through which water can be supplied to the mouth, the mouthguard body 1 has an inner wall portion 13 that encloses and holds the upper jaw teeth, an outer wall portion 14 and a bottom wall portion 15 that connects the two, the outer wall portion 14 has a bulging portion 14A that bulges outward and is provided in the bulging portion 14A for insertion of the water passage 2, and the tip portion 22 of the water passage 2 is housed in the bulging portion 14A, the improved mouthguard A.

The utility model discloses a rubber barrier perforated plate, which belongs to the technical field of medical equipment and comprises a transparent plate body, a positioning area is arranged on the transparent plate body, the positioning area is consistent with a rubber barrier in size and shape, a cross center line is arranged in the positioning area, and the positioning area is divided into four quadrants by taking the cross center line as an xy coordinate system. A right upper jaw tooth position hole and a left upper jaw tooth position hole are formed in the first quadrant and the fourth quadrant respectively, and a right lower jaw tooth position hole and a left lower jaw tooth position hole are formed in the second quadrant and the third quadrant respectively. Due to the fact that the plate body is transparent, finding of corresponding tooth position holes and adjustment of the relative position of the punching plate and the rubber barrier are very convenient, meanwhile, punching can be conducted on the rubber barrier on the corresponding tooth position holes in the transparent plate body in combination with the punching technology, the influence of the thickness, the color and the transparency of the rubber barrier is avoided, and the punching effect is good. And the influence of ambient light is relatively small.

The present invention discloses an intermaxillary traction tooth surface fixing device, its digital manufacturing method and application. The fixing device includes an upper jaw tooth surface fixing component applicable to the upper jaw and a lower jaw tooth surface fixing component applicable to the lower jaw. The upper jaw tooth surface fixing component includes a tooth surface bonding attachment A bonded to the labial tooth surfaces of each tooth in the upper jaw, a connecting rod A connecting two adjacent tooth surface bonding attachments A, and further includes a traction hook A extending towards the gingival side and arranged on the connecting rod A. The lower jaw tooth surface fixing component includes a tooth surface bonding attachment B bonded to the labial tooth surfaces of each tooth in the lower jaw, a connecting rod B connecting two adjacent tooth surface bonding attachments B, and further includes a traction hook B extending towards the gingival side and arranged on the connecting rod B.

The utility model relates to an orthodontic operation occlusion guide plate based on an invisible orthodontic device, which comprises a middle occlusion guide plate and a terminal occlusion guide plate, the middle occlusion guide plate is used for determining the middle occlusion relationship between an upper jaw tooth bone section and a lower jaw tooth bone section at an initial position, and the terminal occlusion guide plate is used for determining the terminal occlusion relationship between the upper jaw tooth bone section and the lower jaw tooth bone section. The middle occlusion guide plate is integrally formed by a first upper contact surface, a first lower contact surface and a connecting part, a first upper tooth occlusion position is arranged on the first upper contact surface, a first lower tooth occlusion position is arranged on the first lower contact surface, and the end occlusion guide plate is integrally formed by combining a second upper contact surface and a second lower contact surface; a second upper tooth occlusion position is arranged on the second upper contact surface, and a second lower tooth occlusion position is arranged on the second lower contact surface. According to the utility model, the anterior tooth area is not fully covered, the resistance and difficulty during dislocation and in-position are reduced, the operation time is saved, the observation window is arranged, the situation that the dentition is not in place is avoided, and the operation precision is ensured.

This is a dental measuring tool used to check the degree of tooth grinding when grinding and capping teeth. As shown in the "Reference Front View," this tool consists of a gripping portion, an interocclusal measurement portion, and a grinding shoulder measurement portion. For example, when grinding and capping a lower jaw tooth, as shown in "Reference Figure 1 Showing the State of Use," the tip of the interocclusal measurement portion is inserted between the ground lower jaw tooth and the upper jaw tooth to measure the gap. Furthermore, as shown in "Reference Figure 2 Showing the State of Use," the grinding shoulder measurement portion is placed along the ground lower jaw tooth, and the shoulder (foot-like portion) of the lower jaw tooth is measured using the tip diameter of the grinding shoulder measurement portion, and the height of the lower jaw tooth is measured using the scale on the grinding shoulder measurement portion.

The embodiment of the invention provides a method for generating a three-dimensional tooth-jaw composite model, which comprises the following steps: acquiring an initial three-dimensional tooth-jaw composite model, the initial three-dimensional tooth-jaw composite model comprising an upper jaw tooth virtual model, an upper jaw bone virtual model, a lower jaw tooth virtual model and a lower jaw bone virtual model; under the condition that the relative pose relation of the maxillary virtual model and the mandibular virtual model is kept unchanged, teeth in the maxillary tooth virtual model and the mandibular tooth virtual model are subjected to decompensation alignment to obtain a preoperative three-dimensional tooth-jaw composite model; obtaining relative poses of a tooth model and a corresponding bone block model in the preoperative three-dimensional tooth-jaw composite model and a jaw correction treatment demand; under the condition that the relative poses of the tooth model and the corresponding bone block model in the preoperative three-dimensional tooth jaw composite model are kept unchanged, the poses of all the bone block models in the preoperative three-dimensional tooth jaw composite model are adjusted according to the orthognathic treatment requirement, and a postoperative three-dimensional tooth jaw composite model is obtained.

The utility model discloses a tracheoscope mouthpiece with nasal catheter fixing function, including a medical staff is in the tracheoscope examination of patient is put into the mouth of patient for its upper jaw teeth and lower jaw teeth occlusion bite body, in the middle part of bite body along its axial direction direction is equipped with the tracheoscope detection channel of the tube body of tracheoscope from its patient mouth part and needs to carry out the position of detection. The utility model discloses through nasal catheter fixing structure can effectively fix nasal catheter, not only has reduced the labor intensity of medical staff, and also has improved the inspection efficiency of tracheoscope, has brought greater convenience to the inspection work of tracheoscope.

The invention relates to the technical field of medical instruments, in particular to an occlusion recording device for intraoral scanning and mold taking of a patient with multiple tooth loss, which comprises a bracket, a mold seat for adhering a silicon rubber mold is mounted on the bracket, the silicon rubber mold is used for performing occlusion recording on tooth loss, a pressing plate is rotatably arranged on the bracket, and the pressing plate is rotatably arranged on the bracket. A pressing frame penetrating through the bracket is fixed to the pressing plate, a bottom plate is fixed to the bottom of the bracket, a movable frame is arranged below the bracket and located on the inner side of the bottom plate, and first springs are connected between the four corners of the upper wall of the movable frame and the bottom wall of the bracket; the lower jaw teeth or the upper jaw teeth are automatically fixed when occlusion recording is carried out on the upper jaw teeth or the lower jaw teeth, a patient can be assisted to keep a stable and correct occlusion relation, and the operation is simple and convenient. And the silicone rubber mold is used for directly recording and transferring the jaw position relation and the tooth loss condition, so that the precision is high, the efficiency is high and the comfort level is high.

The longitudinal force applying device comprises accessories and an installation arch wire, the two ends of the installation arch wire are connected to teeth of an upper jaw through the accessories, an orthodontic buckle is arranged on the installation arch wire, and the orthodontic buckle is used for being connected with an upper jaw tooth socket and applying longitudinal force to the upper jaw tooth socket. According to the invention, the mounting arch wire is fixed on the teeth, and the orthodontic buckle on the mounting arch wire is used as a traction fulcrum, so that longitudinal force can be continuously applied to the maxillary tooth socket in the process of wearing the maxillary tooth socket, thereby effectively improving the effect of anterior tooth depression; moreover, the whole device is simple in structure, small, exquisite and non-invasive, can be well arranged at the maxillary vestibular sulcus of the orthodontic patient, is not easily interfered by external force, does not cause obvious influence on the appearance and image of the orthodontic patient, and is beneficial to popularization and application of the device.

The utility model relates to the field of jaw crushers, and particularly discloses a jaw crusher and a jaw plate thereof, the jaw crusher comprises a fixed jaw plate and a movable jaw plate, the fixed jaw plate and the movable jaw plate respectively comprise a plate body, a positioning piece and a plurality of jaw teeth, the plurality of jaw teeth are parallel to each other and are distributed at equal intervals along the width direction of the plate body, and the jaw teeth are detachably connected to the plate body. The positioning piece is connected to the upper end of the plate body through a bolt and abuts against the upper end of the jaw tooth, so that the jaw tooth is limited on the plate body. The jaw teeth are detachably connected with the plate body, and when the jaw teeth in the middle of the plate body are seriously abraded, the jaw teeth in the middle can be independently detached and replaced, so that the operation difficulty of jaw tooth replacement is reduced, meanwhile, the utilization rate of other jaw teeth with small abrasion is increased, and the stability of the jaw teeth in the crushing process is ensured through the arrangement of the positioning piece.

The invention relates to the technical field of orthodontics, in particular to an invisible orthodontic tooth socket for orthodontics, which comprises an upper tooth socket and a lower tooth socket, the upper tooth socket and the lower tooth socket are integrally formed, and both the upper tooth socket and the lower tooth socket are made of medical EVA (Ethylene Vinyl Acetate) materials. The upper tooth socket and the lower tooth socket are respectively provided with an upper tooth socket and a lower tooth socket which correspond to upper jaw teeth and lower jaw teeth of a patient, each of the upper tooth socket and the lower tooth socket comprises three sections of correction areas, and the ratio of elasticity to rigidity of each section of correction area is different; the orthodontic force applied to the teeth by the first section of orthodontic area in the three sections of orthodontic areas is mild force, the orthodontic force applied to the teeth by the second section of orthodontic area in the three sections of orthodontic areas is moderate force, and the orthodontic force applied to the teeth by the third section of orthodontic area in the three sections of orthodontic areas is heavy force. According to the tooth socket, three sections of different elastic and rigid combined forces are formed on the same tooth socket, so that the phenomenon that the correction forces provided by the existing tooth socket are consistent and the phenomenon of'one-step cutting 'exists is overcome, the discomfort in the correction process is reduced, and the comfort of a patient is improved.

The invention relates to the technical field of oral endothelial valve repair, and particularly discloses an oral endothelial valve repair postoperative occlusion limiting device which comprises an upper tooth socket and a lower tooth socket which are matched with healthy side upper jaw teeth and healthy side lower jaw teeth respectively, and the end of the upper tooth socket is connected with the end of the lower tooth socket through a curved surface connecting piece. The surface, facing the lower tooth socket, of the upper tooth socket is of a bionic structure of maxillary teeth; the lower tooth socket comprises a lower base, an upper tooth seat and a plurality of adjusting blocks, the lower surface of the lower base is matched with mandibular teeth, the upper tooth seat is arranged on the uppermost adjusting block, and the upper surface of the upper tooth seat is of a bionic structure of the mandibular teeth; flanges are arranged on the two sides of the upper tooth base, a groove body is formed between the two flanges, limiting protrusions are arranged on the surfaces, located in the groove body, of the flanges, clamping grooves matched with the limiting protrusions are formed in the inner side surface and the outer side surface of each adjusting block, and the limiting protrusions are clamped into the clamping grooves to lock the upper tooth base and the adjusting blocks. And according to the swelling condition of an operation area, the healthy side can be precisely limited, and the occlusion height can be dynamically adapted.

The invention relates to an adjustable tooth socket, and belongs to the technical field of tooth sockets, an adjustable connecting piece is arranged, and a first clamping part and a second clamping part are arranged in a first matching groove and a second matching groove in the connecting piece respectively, so that an upper jaw tooth socket and a lower jaw tooth socket are allowed to move back and forth on the connecting piece respectively; the front and back positions of the upper jaw tooth socket and the lower jaw tooth socket can be adjusted according to the actual condition of teeth of a patient, so that the front and back relative position relation of the upper jaw teeth and the lower jaw teeth of the patient is driven to be adjusted, the adaptability and individuation degree of the tooth sockets are greatly improved, the correction effect is favorably improved, and the discomfort of the patient is reduced; the problems that after an upper tooth socket and a lower tooth socket in an existing tooth socket are fixed, the mutual position of the upper tooth socket and the lower tooth socket cannot be adjusted front and back according to actual needs of a patient, a user cannot adjust the mutual position according to actual use conditions, and universality is not high are solved.

The invention discloses a sectional type appliance for quickly correcting posterior tooth locking by stress dispersion connection, which comprises a sectional type tooth socket body, the sectional type tooth socket body is a shell-shaped cavity for wrapping the tongue side and the cheek side of a complete dentition, the sectional type tooth socket body comprises a tooth socket body for covering other dentitions and a tooth socket body for covering posterior tooth locking / reverse locking, and the shell-shaped cavity is a shell-shaped cavity for covering the tongue side and the cheek side of the complete dentition. The tooth socket body covering the locking / reverse combination of the rear teeth is located at the position of the rear teeth of the sectional tooth socket body, an elastic structure is arranged between the tooth socket body covering the other dentition and the adjacent tooth socket body covering the locking / reverse combination of the rear teeth, and the elastic structure provides pulling force or pressure for the tooth socket body covering the locking / reverse combination of the rear teeth. Correcting force can be formed on teeth through the elastic structure and the elastic rod, occlusal force is guided by the induction inclined face to achieve tongue pushing and lip pulling of maxillary teeth and tongue pushing and lip pulling of mandibular teeth, back teeth are rapidly corrected to be reversely combined or locked, and the back tooth / reverse combined locking appliance is efficient, safe and feasible.

The utility model relates to the technical field of tooth correction, and discloses an invisible tooth correction device which comprises an upper jaw tooth socket, a lower jaw tooth socket and at least one back tooth parallel guide, a plurality of first rear tooth socket bodies are arranged on the upper jaw tooth socket at intervals; the lower jaw tooth socket is provided with a plurality of second rear tooth socket bodies at intervals and is matched with the upper jaw tooth socket for use; the back tooth parallel guide is correspondingly arranged on the side wall of the first back tooth socket body and / or the side wall of the second back tooth socket body, and the back tooth parallel guide is suitable for corresponding to back teeth to be corrected; the invisible tooth orthodontic appliance has a positive jaw locking state and / or a reverse jaw locking state, in the positive jaw locking state, each rear tooth parallel guide is arranged on the buccal side of the second rear tooth socket body and can be in contact with the tongue tip of the first rear tooth socket body, and in the reverse jaw locking state, each rear tooth parallel guide is arranged on the buccal side of the first rear tooth socket body and can be in contact with the tongue tip of the second rear tooth socket body. According to the utility model, the tooth socket is provided with the back tooth parallel guide to realize correction, so that the interference effect of the occlusal pad can be avoided, and the use experience of a patient is improved.

The invention relates to the field of false teeth, in particular to a false tooth neck-edge line automatic extraction method and system, and the method comprises the steps: scanning an upper jaw tooth image and a lower jaw tooth image of a patient; acquiring a plurality of tooth neck edge images, and marking left and right end point values and a neck edge lowest point value of each tooth in each tooth neck edge image; counting the left and right end point values of each tooth and the lowest point value of the neck edge as a number set, and taking the number set as a training set of a deep learning model; the loss function value of the deep learning model does not decrease any more; a first neck edge connecting line is determined by the left end point of the tooth and the lowest point of the neck edge, a second neck edge connecting line is determined by the right end point of the tooth and the lowest point of the neck edge, and an included angle formed between the first neck edge connecting line and the second neck edge connecting line is a target angle X1; and recording a second lowest point value of the neck edge of each tooth, and repeating the step S4 to obtain a target angle X2. The method has the advantages that the false tooth neck-edge line position with errors can be quickly found and quickly modified and repaired, and the false tooth manufacturing quality is improved.

The utility model belongs to the technical field of sleep aids, and discloses snore-ceasing equipment, which comprises an upper jaw tooth socket, a lower jaw tooth socket, an upper jaw pad and a lower jaw pad, an upper jaw gasket is arranged in an inner cavity of the upper jaw tooth socket, a lower jaw gasket is arranged in an inner cavity of the lower jaw tooth socket, the connecting piece penetrates through the upper jaw gasket and the lower jaw gasket to connect the upper jaw tooth socket with the lower jaw tooth socket, and the upper jaw tooth socket pulls the lower jaw tooth socket to be kept at the front position. The connecting piece is simple in structure and stable in connecting effect, the gasket embedded in the tooth socket is additionally arranged, the upper jaw tooth socket and the upper jaw gasket are connected in a penetrating mode, the upper jaw tooth socket and the upper jaw gasket are not prone to falling off, the service life is long, and compared with sticking connection, the connecting piece is easy to produce and manufacture, comfortable to wear, easier to clean and manage and suitable for popularization and application. And the device is more popular with users.

The invention provides a dental caries and dental plaque cleaning device, and relates to the technical field of tooth cleaning.The dental caries and dental plaque cleaning device comprises a holding part and two sets of cleaning brushes, the cleaning brushes are installed on the holding part, the holding part is used for being taken by a user, water is stored in the holding part, and the water in the holding part can be squeezed into the oral cavity of the user when the dental caries and dental plaque cleaning device is used; therefore, the cleaning brush is assisted to clean dental plaque of a patient; the two sets of cleaning brushes are located on the cheek side face and the tongue palate side face of teeth respectively, a user squeezes water in the holding part into the oral cavity, the connecting part can make the two sets of cleaning brushes abut against the cheek side face and the tongue palate side face of the teeth, and the user occludes the biteplate through the teeth; when the biteplate moves, the cleaning brush can be driven to move and rotate along the teeth, so that the cheek side surfaces, the tongue palate side surfaces and the adjacent gaps of the upper jaw teeth and the lower jaw teeth can be cleaned at the same time, and the tooth cleaning efficiency can be effectively improved.

The utility model discloses a laser surgery guide plate device for oral cavity, and relates to the technical field of oral cavity laser surgery, the laser surgery guide plate device for oral cavity comprises a tooth socket part, a plurality of root cutting guide plate parts are arranged at the upper end of the outer edge of the tooth socket part, and the root cutting guide plate parts and the tooth socket part are integrally formed. A positioning groove is formed in the root cutting guide plate part, a laser blocking piece is arranged in the positioning groove, a gingival wrapping groove is formed in the tooth socket part, a tooth mold groove is formed in the gingival wrapping groove, and the laser blocking piece comprises a clamping section and a limiting edge. An upper jaw tooth mold and a lower jaw tooth mold need to be constructed at the same time, the mold on one side is used as a support after combination, and the material cost is high.

The utility model relates to a mandibular advancement appliance for treating OSAHS, which comprises a maxillary tooth socket and a mandibular tooth socket, first mounting plates are symmetrically arranged at the positions of back tooth areas on two sides of the maxillary tooth socket, second mounting plates are symmetrically arranged at the positions of back tooth areas on two sides of the mandibular tooth socket, the second mounting plates are positioned in front of the first mounting plates, and the second mounting plates are positioned in front of the second mounting plates. The upper jaw tooth socket and the lower jaw tooth socket are formed through 3D printing, a first screw and a second screw are embedded in the first mounting plate and the second mounting plate respectively, and a metal adjusting rod with the adjustable length is hinged between the first screw and the second screw. The maxillary tooth socket and the mandibular tooth socket of the mandibular advancement appliance are directly printed through a 3D printer after the screws are embedded, so that the influence of a mold pressing process on the precision is avoided, and the production efficiency is greatly improved. The upper jaw tooth socket and the lower jaw tooth socket are connected through the metal adjusting rod with the adjustable length, the forward moving distance of the lower jaw tooth socket relative to the upper jaw tooth socket can be accurately adjusted, and the structural stability is good.

The utility model discloses an orthodontic appliance for children, which is composed of an upper jaw appliance and a lower jaw appliance which are matched with each other and connected with each other, and the upper jaw appliance and the lower jaw appliance respectively have shapes matched with upper jaw teeth and lower jaw teeth of children. The upper jaw appliance and the lower jaw appliance are respectively provided with tooth sockets matched with upper jaw teeth and lower jaw teeth of a child so as to respectively cover the whole upper dentition and the whole lower dentition, and the upper jaw appliance and the lower jaw appliance are respectively of a three-layer structure; comprising soft layers close to and away from a tooth surface and a hard layer between the two soft layers. The children orthodontic appliance provided by the utility model can be suitable for orthodontics of teeth of different children, is high in adaptability, is not easy to fall off after being worn, is high in children compliance, can continuously provide orthodontic force on the basis of improving the wearing comfort, and realizes durable orthodontics.