70 results about "Orthodontic technology" patented technology

The utility model relates to the technical field of orthodontics, in particular to a magnetic invisible orthodontic appliance for treating opening and closing of rear teeth, which comprises an invisible tooth socket, an eruption cap, a magnetic component and a retention accessory, the eruption cap is used for guiding and accommodating the growth of target teeth and is integrally formed with the invisible tooth socket; when in use, the retention accessory is arranged on the inner side of a tooth and is allowed to be accommodated in an invisible tooth socket; the magnetic assembly is arranged on the inner surface of the germination cap and comprises a first magnetic part arranged on one side, close to a target tooth, of the germination cap and a second magnetic part arranged on the occlusal surface of the target tooth; wherein the first magnetic part and the second magnetic part are in magnetic attraction connection and are used for realizing and enhancing the orthodontic force of the invisible tooth socket. Compared with the prior art, the magnetic invisible appliance is high in adjustability, stable in applied force, long in duration and capable of reducing mechanical stimulation.

The invention relates to the technical field of invisible orthodontics, and discloses a correction strategy generation method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring a target form correction model for a target part, and initial point cloud data generated by a recycled invisible corrector at multiple angles; constructing an actual form correction model corresponding to the invisible corrector based on the initial point cloud data; generating a deformation prediction model of the invisible corrector based on the physical characteristics of the invisible corrector; comparing the deformation prediction model with the actual form correction model to obtain a first form comparison result, and comparing the target form correction model with the actual form correction model to obtain a second form comparison result; and updating a correction strategy for the target part according to the first form comparison result and the second form comparison result, and generating a target correction strategy. By implementing the technical scheme of the invention, a personalized invisible correction strategy can be accurately generated, so that the correction effect is improved.

The invention discloses a design and preparation method of a personalized gradient thickness invisible orthodontic appliance model, relates to the technical field of tooth orthodontics, and aims to overcome the defects that the thickness is uncontrollable and preset mechanical properties cannot be accurately realized when an invisible orthodontic appliance is manufactured by a traditional hot press molding process. The method comprises the following steps: firstly, reconstructing a personalized dental model containing tooth roots and bone tissues based on CBCT data of a patient; designing a plurality of gradient thickness appliance schemes; through finite element analysis and simulation, selecting an optimal scheme which is most favorable for realizing correction effects such as overall movement of teeth; and finally, integrally forming and manufacturing the selected appliance by adopting a direct 3D printing technology. The direct 3D printing ensures that the appliance can be manufactured in a high-precision and high-fidelity manner from a complex gradient thickness structure with thick gingiva and thin occlusal surface, so that the optimized mechanical property verified by simulation can accurately reproduce in a real object, the inherent defects of a hot-pressing film process are thoroughly overcome, and the accuracy and predictability of correction are remarkably improved.

The invention relates to the field of orthodontics, in particular to a tooth orthodontics intermediate motion prediction method based on a conditional diffusion model. The invention aims to solve the problem that in the existing digital orthodontic technology, the motion trail generation in the correction intermediate process depends on manual design, and the efficiency is low. According to the method, a conditional diffusion model is constructed, and supervised training is carried out by using data sets of tooth movement tracks before, after and during tooth treatment. In the reasoning stage, the model only needs to input tooth model data before and after treatment, and a complete intermediate movement track meeting biomechanical constraints and clinical requirements can be automatically and accurately generated. Through a data driving mode, expert experience is learned and reproduced, tooth collision can be effectively avoided, the occlusion relation is ensured, and the automation level and prediction precision of orthodontic scheme design are remarkably improved.

The invention relates to the technical field of orthodontics, in particular to a navigation method and system for a semi-automatic robot, and the method comprises the following steps: setting a reference mark; defining a first space coordinate system by adopting an optical positioning camera, wherein the first space coordinate system is used for defining a first coordinate of the reference mark; the target model defines the relative position between the reference mark and the teeth through a second space coordinate system; registering the first space coordinate system and the second space coordinate system by adopting a coordinate system registration algorithm, and correspondingly converting the first coordinates to obtain first and second reference coordinates of the first and second reference points in the first space coordinate system; calculating a first reference distance and a second reference distance of the first reference point and the second reference point in the first space coordinate system and the second space coordinate system; if the difference value between the first reference distance and the second reference distance is smaller than a set reference threshold value, a first navigation point of the grabbing mechanism is determined according to the reference point. The invention solves the problem that the existing navigation method has high performance requirements on hardware equipment.

The invention provides a bracket-free invisible orthodontic appliance with a lock catch structure and a preparation method of the bracket-free invisible orthodontic appliance, and belongs to the technical field of orthodontics. The bracket-free invisible orthodontic appliance comprises a bracket-free invisible orthodontic appliance; the extension wing is transversely arranged on the palate side between maxillary molars on the left side and the right side of the bracket-free invisible appliance or is connected with the edge of the cheek side of the invisible appliance; the extension wing comprises an implant anchorage nail buckle which is arranged on the surface of the palatal side area or the gingival area of the extension wing; and the implant anchorage nails are clamped with the buckles on the extension wings. A mechanical lock catch structure is formed between the bracket-free invisible orthodontic appliance and the implant anchorage nail through the extension wings with the implant anchorage nail buckles, so that the anchorage stability is improved, the adaptation range of bracket-free invisible orthodontic appliance is expanded, the use efficiency of the implant anchorage device is improved, and the clinical predictability of complex cases is improved. According to the preparation method, real-time design is carried out through digital parameter regulation and control, and a direct three-dimensional printing technology is preferably adopted, so that rapid customization and accurate application of the bracket-free invisible orthodontic appliance are realized.

The utility model discloses a storage device for storing orthodontic brackets, which belongs to the technical field of tooth orthodontics and comprises a shell, a taking opening is arranged on one side of the upper end of the shell, a placing bin is fixedly mounted on the other side of the upper end of the shell, a conveying belt is mounted in the shell, and shifting plates are mounted on the conveying belt in an array manner. A power supply control bin is fixedly installed on one side of the outer portion of the shell, a control panel is fixedly installed at the upper end of the power supply control bin, a cover plate is hinged to the upper end of the shell, a laser range finder is fixedly installed at one end of the inner side of the cover plate, through the conveying belt and the shifting plate, brackets can be conveyed to the taking opening conveniently, taking is convenient, and through the laser range finder, the brackets can be taken conveniently. When no bracket exists between the shifting plates, automatic conveying is carried out, the use convenience effect is improved, the brackets are located in a sealed space during storage through the hinged cover plates, auxiliary illumination is carried out during use, the conveying condition of the brackets is detected, and the brackets of different specifications can be conveniently stored in a classified mode during combination.

The utility model relates to the technical field of tooth orthodontics, and discloses an orthodontic nickel-titanium square wire arch bracket which comprises a bracket body, an arch wire groove used for installing a square wire arch is formed in the bracket body in the width direction of the bracket body, an installation groove communicated with the arch wire groove is formed in the bracket body in the length direction of the bracket body, and an upper cover is arranged in the installation groove in a sliding mode. Sliding grooves are formed in the side walls, opposite to the mounting groove, of the upper cover in the length direction of the upper cover, sliding blocks sliding in the corresponding sliding grooves are arranged on the two sides of the upper cover, a first fixing piece used for fixing the upper cover is arranged in the mounting groove, and a second fixing piece used for fixing the upper cover is further arranged in the bracket body. Through the above structure, the upper cover is fixed for multiple times, even if the first fixing part loses efficacy, the second fixing part can fix the upper cover, and the upper cover cannot be separated from the upper cover mounting groove, otherwise, when the second fixing part loses efficacy, the first fixing part can fix the upper cover, and the upper cover cannot be separated from the upper cover mounting groove; therefore, the fixing effect of the square wire arch in the arch wire groove is better.

The utility model discloses a tooth orthodontic appliance, which belongs to the technical field of tooth correction and comprises a fixing plate, a U-shaped block is connected to the side surface of the fixing plate, an insertion plate is embedded in the U-shaped block, a fixing component is arranged in the insertion plate, and a dismounting component is arranged at the top of the U-shaped block. The installation block slides into the installation groove, the positioning rod is connected with the positioning groove in an inserted mode so that the limiting rod can be firmly installed and positioned, the limiting rod can be conveniently installed and added after the appliance is installed and fixed in the oral cavity, installation is easy, and the use effect is better. The fixing assembly is arranged, under the elastic acting force of the first spring in the sliding groove, the sliding block drives the clamping block to move outwards to be inserted into the clamping groove so that the inserting plate can be fixedly and firmly installed, the sliding block is pressed to enable the clamping block to be separated from the clamping groove so that the inserting plate can be taken down, and the sliding block is controlled to be located on the side face of the inserting plate so that the oral cavity can be prevented from being scratched. And therefore, the wearing comfort of the device is higher.

The utility model provides an orthodontic auxiliary anterior tooth depressing device, and mainly relates to the technical field of orthodontics. The orthodontic auxiliary anterior tooth depressing device comprises a main arch tube, a connecting tube is fixedly arranged at the bottom of the main arch tube, an auxiliary arch tube is fixedly arranged at the bottom of the connecting tube, and the auxiliary arch tube and the main arch tube are obliquely arranged. The device has the beneficial effects that the device can be added and taken down at any time clinically, and does not need to be bonded with a dental surface, so that the chair-side time is saved; an auxiliary bow does not need to be additionally bent, and a common nickel-titanium wire can enter the auxiliary bow tube; pressing force can be reduced to cross the canine teeth, and stress interruption is avoided; and the main anchorage tooth is arranged between the two back teeth, so that only one tooth is stressed, and the back teeth are prevented from being extended too much.

The application discloses a design, verification analysis and optimization method of a bracket-free invisible orthodontic appliance model, and belongs to the technical field of oral orthodontics. The design method of the application adopts a cooling method to simulate and adjust the thermal expansion deformation of a local appliance model, restricts the deformation direction and size, and realizes the design deformation of the appliance model. The analysis verification method of the application comprises iterative simulation of the osteogenesis and osteolysis biological effect under orthodontic treatment force based on computer three-dimensional finite element analysis, simulation of wearing of the appliance, reading of simulation results, and analysis and verification. The optimization method of the application is based on the simulation results. The application creatively adopts a "cooling method" with prestress loading to realize the model deformation simulation of the appliance, and can combine the finite element simulation of the periodontal membrane biological effect of the actual clinical treatment time. The application implements the step-by-step design, analysis verification and optimization of the invisible orthodontic appliance model according to the analysis verification results.

The invention discloses a screw invisible orthodontic appliance, which comprises a transparent tooth socket sleeved on teeth; the accessory is adhered to the surface of the lip side or the tongue side of the required tooth through an accessory guide plate; the screw abuts against the tooth surface or the accessory based on the interior of the screw kit to form thrust; the screw suite is arranged at the corresponding position of the lip side or the tongue side of the transparent tooth socket, and the screw is in contact with teeth or accessories through the screw suite to form thrust. The invention provides a screw invisible corrector which is used for solving the problems that the existing invisible correction technology is common in correction effect, long in time, difficult in root control and not suitable for complex correction cases. The invention further provides an orthodontic method of the invisible screw orthodontic device.

Embodiments of the present invention relate to the technical field of digital orthodontics. Disclosed are a method for tooth model segmentation and orthodontic scheme design, an orthodontic appliance, and a manufacture method. In the present invention, gingivae and crowns are separated from a tooth model to be segmented to obtain gingiva data and crown data from said tooth model; starting from the innermost side of a dentition, the crowns of the innermost teeth are sequentially separated from the current crown data to obtain a crown separation result; a segmentation result of said tooth model is obtained on the basis of the crown separation result and the gingiva data. On the basis of the relatively significant shape difference between the innermost tooth in the dentition and a combination of all the other teeth, the present invention uses deep learning to recursively segment the tooth model, starting from the innermost side, so that the segmentation of the teeth does not depend on the appearance and shape of the teeth, thereby greatly improving the accuracy of the segmentation of the three-dimensional tooth model.

The utility model relates to the technical field of orthodontics, in particular to a towing hook for orthodontics, which comprises two towing hooks, an arch wire is fixedly connected to the opposite sides of the two towing hooks, and a shell is arranged on the opposite sides of the two towing hooks; an adjusting assembly is arranged in an inner cavity of the shell. The device has the advantage that the distance between the two traction hooks can be adjusted, in the actual using process, along with advancing of orthodontic treatment, teeth can gradually move to the ideal position under the action of continuous traction force, at the moment, the adjusting assembly is introduced, the arch wire connecting the two traction hooks is wound and adjusted, and therefore the orthodontic treatment effect is improved. The process of frequently replacing or adjusting the arch wire in the traditional orthodontic treatment is simplified, and the tension of the arch wire can be effectively adjusted and the continuity and accuracy of traction force can be ensured by shortening the distance between the two traction hooks, so that the traction effect of the traction hooks is enhanced, the orthodontic process is accelerated, and the orthodontic treatment effect is improved. And meanwhile, unnecessary treatment time and discomfort are reduced.

The utility model discloses a tooth correcting device. Belongs to the technical field of orthodontics, the orthodontic appliance comprises a plurality of fixing pieces, a connecting piece and a traction assembly, the fixing pieces are suitable for being fixed on a plurality of anchorage teeth in a one-to-one correspondence mode, the traction assembly comprises a traction hook, a connecting buckle and a traction line, the traction hook is provided with a traction end and a connecting end, the traction end is located on the lingual side of an affected tooth, and the connecting end is connected with the connecting piece; or the traction end is located on the cheek side of the diseased tooth, the connecting end is connected with the fixing piece, the connecting buckle is bonded to the side, facing or away from the traction end, of the diseased tooth, and the traction end is connected with the connecting buckle through a traction line so as to apply correction force for correcting jaw locking to the diseased tooth, so that the diseased tooth is reset towards the interior of the alveolar bone, and correction of jaw locking of the diseased tooth is achieved. The traction ends are located on the sides, away from the occlusal surface, of the gingival edges of the corresponding diseased teeth, correction force comprises gingival press-in force, and the diseased teeth can be effectively prevented from stretching in the correction process.

The invention provides an auxiliary device for forward traction and a correction system, and relates to the technical field of orthodontics, the auxiliary device for forward traction comprises an anchorage column and a connecting rod, the anchorage column is connected with teeth, one end of the connecting rod is connected with the anchorage column, the other end of the connecting rod is connected with a front traction surface frame, and the anchorage column is provided with a blind hole or a through hole; the correction system comprises a front traction surface frame and the auxiliary device. The anchorage foundation is transferred to the lower jaw dental arch from the traditional chin pocket, so that the stress discomfort of the chin is avoided; meanwhile, the blind hole or the through hole facilitates accurate positioning and stable assembly of the connecting rod, the overall structural stability and the force conduction efficiency are improved, and therefore the technical problems that a traditional front traction device is uncontrollable in anchorage, the chin pocket is pressed and uncomfortable, and molar distalization is difficult to support synchronously are solved, and the comfortable, stable and multifunctional integrated correction effect is achieved.

The utility model relates to the technical field of orthodontics, in particular to a groove of an orthodontic bracket, which comprises a groove piece arranged in a bracket body, a mounting groove arranged in the bracket body and used for placing the groove piece, an arch wire groove arranged in the groove piece and used for mounting an arch wire, and fixing holes oppositely arranged on two sides of the arch wire groove. Square grooves are oppositely formed in the positions, located on the two sides of the mounting groove, in the bracket body, circular cavities are formed in the square grooves, telescopic rods which penetrate through the bottom walls of the circular cavities and can stretch into or break away from the fixing holes are arranged in the square grooves, and control assemblies used for controlling the telescopic rods to stretch into or break away from the fixing holes are arranged in the square grooves. When the groove part is mounted, the groove part is placed in the mounting groove, and the end part of the telescopic rod is driven by the control assembly to extend into the fixing hole to limit the groove part, so that the groove part can be mounted, the groove part cannot move in the bracket body, and the correction effect is prevented from being influenced.

The utility model discloses a novel long-arm positive-axis spring for adjusting canine axis inclination, and relates to the technical field of orthodontics, the novel long-arm positive-axis spring comprises a connecting arm, a force application arm, a sliding arm and an elastic force storage part, the two ends of the connecting arm are connected with the force application arm and the sliding arm through the elastic force storage part respectively, and the elastic force storage part is connected with the connecting arm. And a hook is arranged at one end, far away from the elastic force storage part, of the sliding arm. According to the orthodontic appliance, canine teeth can be controlled to incline in the required direction, the force application size and direction of the orthodontic appliance are controllable, the teeth can be efficiently aligned while comfort is considered, the orthodontic materials are easy to obtain, manufacturing is easy and convenient, and the orthodontic appliance can be widely applied and popularized.

This invention relates to the field of digital orthodontics, and discloses a method, system, device, and storage medium for concave shrinkage envelope design of invisible aligners. The method acquires a three-dimensional model of the patient's dentition and a target dentition model, generates an initial wrapping mesh on the outer side of the target dentition model, and gradually approximates the target dentition model through local mesh control and iterative shrinkage. Simultaneously, tight fit or gap retention constraints are set for different areas, and smoothing processing is combined to improve mesh stability, ultimately obtaining a continuous, watertight inner surface model of the aligner. This invention improves envelope efficiency, fit, and adaptability for removal and wearing.

The invention provides an orthodontic device and orthodontic method based on self-adaptive orthodontic force of memory alloy, and relates to the technical field of tooth orthodonties.The orthodontic method comprises the following steps that Sp1, the dental form, periodontal tissue response curve and orthodontic force requirement of a patient are evaluated through digital scanning and biomechanics, a personalized dentition model is generated, and an evaluation result is formed; sp2, designing and preparing a memory alloy device according to an evaluation result of Sp1, setting a multi-phase-change temperature gradient, and performing surface ion implantation to optimize biocompatibility. According to the self-adaptive orthodontic force orthodontic method based on the memory alloy in the scheme, through innovative design and application of intelligent materials, the self-adaptive orthodontic force is obtained; multiple key problems in the existing orthodontic technology are effectively solved, and the accuracy, comfort and reliability of treatment are remarkably improved.

The utility model discloses a traction buckle for orthodontics, which belongs to the technical field of orthodontics and comprises a base, the base comprises a concave bonding surface, an annular edge and a multi-channel flow guide component, the bonding surface, the annular edge and the multi-channel flow guide component are arranged on the same side of the base, and the annular edge and the multi-channel flow guide component are arranged on the same side of the base. The multi-channel flow guide assembly is arranged between the annular edge and the bonding surface, and an edge groove is formed in the annular edge; and the functional part is connected with the base through a connecting part. According to the traction buckle, by arranging the multi-channel flow guide assembly, an adhesive can flow to the outside of the base from any point on the bonding face, it is ensured that the adhesive layer is evenly distributed in the bonding process, and the problem that in the prior art, a traction buckle is prone to falling off when subjected to correction force is solved.

The utility model relates to the technical field of orthodontics, in particular to an orthodontic device for orthodontics, which comprises an arch wire main body serving as a device main body, a plurality of fixing mechanisms for simply and conveniently fixing the arch wire main body are arranged on the arch wire main body, and each fixing mechanism comprises a fixing block and a connecting block. A plurality of square grooves are formed in one side of the fixing block, clamping grooves are formed in one sides of the square grooves, two connecting grooves are formed in one side of the fixing block, and a plurality of supporting plates are fixedly connected to one sides of the connecting blocks. According to the device, the fixing mechanism is arranged so that the device can simply and conveniently disassemble and assemble the arch wire body, the supporting plates on the multiple connecting blocks are connected with the square grooves in the multiple fixing blocks in an inserted mode, the multiple elastic pieces and the multiple clamping grooves are fixedly connected, the multiple supporting blocks are inserted into the multiple connecting grooves, and therefore the arch wire body can be conveniently disassembled and assembled. And the multiple magnetic suction plates a and the multiple magnetic suction plates b are used for installing and fixing the position of the arch wire body, and the simplicity and convenience of the device are improved.

This invention discloses a prefabricated personalized nickel-titanium archwire, relating to the field of orthodontic technology. The invention includes: S1: scanning the dentition of malocclusions in a patient's body using 3D scanning; S2: capturing 3D, panoramic, and cephalad images from X-rays of the dentition of malocclusions in the patient's body; S3: taking impressions using printing or plaster; S4: designing an ideal jaw based on the image data and measuring the difference between the in-body jaw and the ideal jaw, thereby obtaining the difference between each in-body malocclusion and its target position; S5: based on the data results, bending and shaping the archwire using equipment to complete the orthodontic representation of all target teeth. By designing the archwire according to the multi-sequence difference of the in-body malocclusions, compared to traditional orthodontic surgery, frequent changes of various archwires are not required during the correction of various malocclusions, simplifying the treatment procedure and shortening the treatment time.

The invention relates to the technical field of orthodontics, in particular to a preparation and application method of an invisible orthodontic appliance. Comprising the following steps: S1, scanning upper and lower jaws of an oral cavity to establish 3D data information; s2, designing an orthodontic scheme; s3, determining the position and form of a positioning body; s4, establishing a 3D original mold, namely a first male mold; s5, establishing a personalized ideal mold, namely a second male mold; s6, selecting a soft orthodontic material corresponding to the elastic tension index according to the difference degree; s7, designing a positioning body bonding position based on the first male mold, and generating a simulated positioning body; s8, correspondingly arranging the positioning body on a second male mold to obtain a second male mold composite body; s9, designing a female die based on the second male die complex; and S10, buckling the second male die complex and the female die, and injecting the selected soft orthodontic material to obtain the soft orthodontic device. The flexible orthodontic device which is high in patient personality matching performance and good in orthodontic effect can be obtained through machining, and the problem of traditional deep covering occlusion of the flexible orthodontic device is solved.

The invention relates to the technical field of tooth orthodontics, in particular to an orthodontic appliance friction force measuring device and a use method. The surface of the test base is provided with a plurality of tooth model modules which are arranged in an arc-shaped track and are uniformly distributed, one side of each tooth model module is provided with a bracket, the inner side of each bracket is provided with a miniature strain gauge, the inner side of each bracket is provided with an arch wire in a penetrating manner, one end of each arch wire is fixedly connected with a fixed dynamometer, and the outer side of each fixed dynamometer is fixedly connected with the test base. The other end of the arch wire is fixedly connected with a force measuring module; arch wires are installed in a bracket on the outer sides of a plurality of simulated teeth, the arch wires are pulled through a force measurement module, the friction force between the arch wires and the bracket is measured, and when the force measurement module pulls the arch wires, a fixed dynamometer just displays a numerical value which indicates that the friction force measured by the force measurement module is the total value of the friction force between the arch wires and the bracket. The device is used for facilitating subsequent installation and adjustment of the appliance.

The utility model relates to the technical field of orthodontics, and discloses a personalized silica gel appliance combined with external orthodontic force, which comprises a silica gel occlusion appliance and a bandage type headgear, an alveolar groove is arranged on the inner side of the silica gel occlusion appliance, and an inner core support keel is arranged in the silica gel occlusion appliance. According to the silica gel occlusion appliance, the inner core supporting keel is arranged on the inner side of the silica gel occlusion appliance, the supporting and bearing effects are achieved, the correction traction strips can be installed on different installation hanging hooks according to the malformation condition of a patient, installation and adjustment are convenient, the correction traction strips are elastically stretched through the elastic correction belts, and the correction traction strips are not prone to deformation. The orthodontic traction strip can bear the effect of orthodontic force outside the mouth, the orthodontic effect of the orthodontic appliance on teeth and jaw bones is greatly improved, the installation mode is easy to operate, operation is convenient, time is saved, when the transparent and attractive orthodontic appliance is used, auxiliary orthodontic force outside the mouth can be achieved, the orthodontic force is high, the orthodontic capacity is excellent, and the orthodontic effect is good.

The utility model relates to the technical field of orthodontics, in particular to an orthodontic clinical fixator which comprises a bottom plate, and two sides of the top end of the bottom plate are fixedly connected with limiting plates. According to the clinical fixator for orthodontics, through the arrangement of the fixing base, the sliding blocks, the clamping plates, the telescopic columns, first springs, inserting rods and second springs, when the clinical fixator is used, the fixing base is connected with the sliding blocks, the inserting rods are held by hands to drive the second springs to contract, the sliding blocks are held by hands to be unfolded outwards, the clinical fixator is placed on the two sides of an operating bed, and after the sliding blocks are unfolded to be as long as the operating bed, the inserting rods are manually loosened; second springs drive inserting rods to fix the unfolding positions of sliding blocks, then clamping plates are manually pressed downwards and placed on the two sides of the bottom end of an operating bed, the clamping plates drive first springs to contract when moving downwards, after the clamping plates are loosened, the first springs push the clamping plates to clamp the bottom end of the operating bed, and telescopic columns are used for limiting the first springs and preventing the first springs from being bent during contraction. Therefore, the effects of adapting to the length of the operating bed and clamping and fixing the device are achieved.

This application discloses a novel device for simultaneously expanding and depressing the mandibular anterior teeth to relieve posterior tooth occlusion, relating to the field of orthodontic technology. It includes a maxillary cast-crown spiral expander, a metal mesh split-plane guide, and traction clips. The maxillary cast-crown spiral expander comprises a cast crown and a spiral expander. The cast crown is used to secure the first premolar, second premolar, and first molar, and the spiral expander is fixedly connected to the cast crown. The metal mesh split-plane guide conforms to the anterior part of the maxillary palate and is fixedly connected to the cast crown. The traction clips are located on the buccal side of the cast crown and are cross-pulled by elastic bands with traction clips located on the lingual side of the mandibular posterior teeth. This application simultaneously expands the arch to solve the problems of maxillary width and vertical misalignment, and utilizes the maxillary cast-crown spiral expander as a reinforcing anchorage to prevent elongation and rotation of the maxillary anchorage teeth. It matches the width of the maxilla and mandible while minimizing anchorage loss, thus relieving posterior tooth occlusion.

The embodiment of the invention relates to the technical field of digital orthodontics, and discloses a tooth model segmentation and orthodontic scheme design method, an orthodontic appliance and a manufacturing method. The method comprises the following steps: segmenting gingiva and dental crown in a to-be-segmented tooth model to obtain gingiva data and dental crown data of the to-be-segmented tooth model; from the innermost side of the dentition, sequentially segmenting tooth crowns of all teeth on the innermost side in the current tooth crown data to obtain a tooth crown segmentation result; and combining the dental crown segmentation result and the gingival data to obtain a segmentation result of the tooth model to be segmented. Based on the characteristic that the innermost teeth in the dentition have great shape difference relative to the combination of all teeth except the innermost teeth, recursive segmentation is carried out on the tooth model from the innermost side through deep learning, so that the segmentation of the teeth does not depend on the appearance shape of the teeth; and the accuracy of segmenting the three-dimensional tooth model is greatly improved.

The utility model relates to a lip muscle high-position hook control torque bracket, which belongs to the technical field of orthodontics, and comprises a bracket, the top of the bracket is connected with a traction arm, the top of the traction arm is connected with a lip muscle pressing block, and the lip muscle pressing block has a certain thickness along the lip-tongue direction. The utility model has the advantages of simple manufacture, low cost for patients, low technical requirements for doctors, short treatment time, and good use effect due to lip muscle pressure.