232 results about "Occlusal surface" patented technology

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 invention discloses an occlusion contact quantitative analysis method and system for three-dimensional dentition scanning data and a storage medium, and relates to the field of oral medicine. The method comprises the following steps: acquiring upper and lower jaw dentition triangular mesh curved surface data by utilizing three-dimensional optical scanning; the method comprises the following steps: copying data of triangular mesh curved surfaces of dentitions of upper and lower jaws, independently cutting each tooth, and enabling the cut data to comprise a complete occlusal surface of the tooth; judging whether each triangular mesh on the grid curved surface of each cut tooth is an occlusion contact surface or not; and the size of the occlusal force is calculated according to the occlusal contact surface and the pressure intensity in the occlusal state. According to the invention, accurate quantitative analysis of the occlusal force and direction of each tooth can be realized, the cost is low, and the operation is simple and convenient.

The embodiment of the invention provides a registration method and system based on oral scanning data and CBCT data, and relates to the technical field of data processing. For any oral cavity model, firstly, the oral cavity scanning data and the oral cavity CBCT data are obtained and are subjected to preprocessing such as segmentation, and the preprocessed oral cavity scanning data and the preprocessed oral cavity CBCT data are obtained. The method comprises the following steps: preprocessing oral cavity CBCT data and oral cavity scanning data, then registering the preprocessed oral cavity CBCT data and the preprocessed oral cavity scanning data by using a normal vector of a triangular patch to obtain a registered tooth mesh model, so that a local optimal trap caused by distance measurement depending on global point cloud in the prior art can be overcome; according to the method, fine calibration is carried out based on the occlusal surface between the oral scanning data and the CBCT data, the oral scanning data and the CBCT data are fully fused through the coarse calibration process and the fine calibration process, more accurate tooth grid data are obtained, and then orthodontic treatment is assisted.

The invention relates to the technical field of dental medicine, in particular to a dental arch model occlusion relation calculation method and device, equipment and a storage medium. The method comprises the following steps: acquiring a dental three-dimensional model of a patient; executing gravity settling positioning operation, fixing the upper jaw model as a static rigid body, releasing translation and rotation freedom degrees of the lower jaw model, and applying gravity action in the normal direction of the occlusal surface; micro-vibration self-adaptive optimization operation is executed, periodic disturbing force dominated by the normal direction is applied to the lower jaw model, and the teeth are driven to generate tangential slippage behaviors along the occlusal surface; identifying an occlusal contact point set, calculating a normal stress value of each contact point, and iteratively adjusting a pose parameter of the lower jaw model; and based on the optimized mandible pose, simulating a mandible motion path, identifying interference points through a continuous collision detection algorithm, and calling back the contact mechanical equilibrium optimization operation to perform closed-loop correction so as to determine the occlusal relationship. According to the method, the occlusion alignment relation better meeting the biomechanics and occlusion function requirements is calculated in an automatic auxiliary mode.

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 dental orthodontic appliance comprises an appliance body, jaw pads located on occlusal surfaces of the appliance body, a first occlusal surface and a second occlusal surface, the first occlusal surface and the second occlusal surface are connected with the occlusal surfaces, the first occlusal surface is arranged corresponding to tooth occlusal surfaces, and the second occlusal surface is arranged corresponding to adjacent tooth gaps. And the jaw pad positioned on the second occlusal surface tends to retract inwards. According to the invention, the jaw pad positioned on the second occlusal surface is designed to be of an inward shrinkage structure, so that the area proportion of the jaw pad supported by teeth can be increased, furthermore, the lower part of each part of the jaw pad can be supported by the teeth, and the phenomena of deformation, collapse and the like caused by no tooth support below the jaw pad are avoided.

The present invention relates to a method for obtaining front, rear, and occlusal surface images of each tooth using a Lens-less camera and a mouthpart provided with a light source, tracking and analyzing consecutive images in a time series using a learned AI algorithm, detecting, diagnosing, managing, and predicting information, and determining whether or not the tooth is a tooth or not. Therefore, not only can the fineness, reliability and effectiveness of tooth diagnosis, treatment and management be improved, but also images of different teeth under the same conditions (imaging direction, magnification, position and the like) can be obtained regardless of the skill of a photographer, and the accuracy and effectiveness of diagnosis and treatment can be further improved. The present invention relates to a mouthpart-type oral cavity camera using a lens-free camera and a dental diagnosis and management system using the same, and can significantly reduce unnecessary time and manpower consumption caused by imaging teeth.

The present invention is oral device that inhibits mastication and ingestion of solid food while minimizing intrusiveness and discomfort in other oral activities. This device is ideal for individuals following an all-liquid diet without relying on willpower alone. The oral device allows a full range of motion of the jaw and the wearer keeps the ability to open and close the mouth, allowing all oral functions other than chewing and swallowing solid food. In various embodiments of the invention, the oral device comprises a set of retainers worn over teeth or retainer bars bonded to, or integrated as part of the retainers. A set of flexible mastication barriers coupled to the retainers or retainer bars and extending from mandible to the maxilla on the lingual side of the mouth inhibit the movement of solid food to the occlusal surfaces of the posterior teeth for chewing. An artificial intelligence platform is implemented to improve fabrication of the oral device and predict and eliminate undercuts in the retainers or retainer bars.

The invention discloses a wearable tongue machine interaction system based on force feedback. The wearable tongue machine interaction system comprises an upper jaw wearing part and a control unit arranged on the upper jaw wearing part. The upper jaw wearing part comprises a flexible upper jaw wearing body, and a first pressure sensor array and a second pressure sensor array are arranged on the flexible upper jaw wearing body; the first pressure sensor array is used for being attached to the whole palate part of a human body and collecting tongue muscle pressure signals, and the second pressure sensor array is used for being attached to a tooth occlusal surface and generating occlusal pressure signals; the control unit is connected with the first pressure sensor array and the second pressure sensor array and generates a tongue machine interaction instruction according to the received pressure signals, and the tongue machine interaction instruction is used for controlling controlled equipment connected with the control unit to complete tongue machine interaction. The system does not occupy the functions of four limbs of a human body, can achieve the precise control of controlled equipment, and will have a wide application prospect in the aspects of medical disabled assistance, industry, civil use and the like in the future.

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.

A shell-shaped dental instrument (100), comprising an appliance (10) having a cavity for accommodating teeth and a support unit (20). An occlusal surface (A1) of the appliance (10) comprises a support surface (A11) corresponding to an occlusal surface of a certain posterior tooth. The support surface (A11) comprises a first support surface (A111) located in the middle and a second support surface (A112) arranged around the first support surface (A111). A separation line (L) between the first support surface (A111) and the second support surface (A112) passes through a plurality of cusps (R). The plurality of cusps (R) correspond to a plurality of dental cusps of posterior teeth, respectively. The support unit (20) is located on the support surface (A11). A first peripheral line (L1) is formed in a junction region between the support unit (20) and the support surface (A11). At least part of the first peripheral line (L1) is located in the first support surface (A111).

The invention discloses a dynamic pressure calibration-based false tooth occlusal surface three-dimensional modeling optimization method and system, and particularly relates to the technical field of false tooth occlusal modeling, and the method comprises the steps: obtaining soft tissue viscoelastic parameters of a patient through ultrasonic elastography and palpation type pressure collection, and carrying out the classification marking; on the basis of viscoelastic parameters and typical pressure time sequence mapping association, a graph neural network fusion time sequence memory unit is trained, and online prediction from dynamic pressure to soft tissue deformation and denture displacement is achieved; performing three-dimensional interpolation and deformation multiplying power correction on the real-time pressure array by utilizing a prediction result, and eliminating soft tissue disturbance through geometric closed-loop feedback iteration; a key contact point cloud is extracted based on corrected equivalent pressure data and predicted displacement, and a high-precision occlusal surface three-dimensional grid is generated by combining weighted registration, reconstruction and local high-density resampling, so that the problem of pressure offset and geometry inconsistency caused by neglecting soft tissue deformation in static modeling is effectively solved.

The invention belongs to a tooth deformity quantification method, and provides a three-dimensional tooth jaw model deep coverage deformity quantification method and a related device aiming at the problems that a distance index measurement method for representing an upper and lower jaw coverage relation in an existing three-dimensional tooth jaw model is time-consuming, the measurement precision is difficult to guarantee, and the method excessively depends on subjective judgment of a doctor. Sequentially obtaining a projection point set in the occlusal surface direction of the tooth area, a central point of the projection point set in the occlusal surface direction of each tooth area and a global central point of the tooth model, then calculating a rotation amount based on the data, performing quaternion transformation, obtaining an identification line capable of representing a crest cutting position of each tooth crown, fitting the identification line of each tooth crown, and obtaining a crest cutting position of each tooth crown; the method comprises the following steps: obtaining two tooth crest cutting distribution curves, performing alignment processing on the two tooth crest cutting distribution curves, obtaining a matching point set through resampling, and obtaining a tooth jaw covering horizontal spacing according to the matching point set. The problem of precision loss in a traditional transformation method is effectively avoided, and the precision of tooth pose adjustment is ensured.

Devices, systems and methods for dental arch expansion. A polymeric shell including teeth receiving cavities may be shaped to impart an arch expansion force onto a first tooth of one or more teeth to move the one or more teeth from a first position a first distance from a midline of the arch to a second position a second distance from the midline of the arch, the second distance being greater than the first distance. An occlusal feature extending outward from an occlusal wall of a tooth receiving cavity may be configured to contact an outer occlusal surface of an opposing appliance to impart an anti-tipping force onto the first tooth. The anti-tipping force may be of a magnitude and direction to counteract a tipping moment generated at least in part due to the arch expansion force.

The invention relates to the technical field of dental restoration, in particular to a digital production method and system for an artificial gingiva of a dental implant bridge, and the method comprises the steps: obtaining the slope difference of an occlusion section, dividing a contour region, setting segmented filling parameters, constructing a normal track, generating a central path, building an outer contour curved surface, and fusing filling data to generate a complete artificial gingiva model. According to the method, the slope difference value of the section point positions of the occlusal surface is calculated, so that the change state of the contour region is accurately recognized, the spatial analysis capability of the section data is improved, and the structural feature extraction is more refined. And filling parameters are respectively set for different contour areas by adopting a linear fitting mode, so that the partition regulation and control capability of the filling structure is effectively enhanced, and the height of a space filling level is more matched with the bionic requirement of gingiva. The continuous path is constructed by means of the direction vector of the contact surface of the adjacent dental prosthesis, so that the natural space transition between the gingival structure and the bridge structure is ensured, and the problems of path breakage and distortion in the manual design process are avoided.

The present invention relates to a mouthpiece-type intraoral imaging device using a lensless camera and a mouthpiece with a light source, which uses a lensless camera and a mouthpiece with a light source to acquire images of the front, back, and occlusal surfaces of each tooth, and is configured to track and analyze successive images over time using a pre-trained AI algorithm to detect diagnostic, management, and predictive information. This not only improves the precision, reliability, and efficiency of dental diagnosis, treatment, and management, but also makes it possible to acquire images under the same conditions (photography direction, magnification, position, etc.) for each tooth regardless of the photographer's level of skill, thereby further improving the accuracy and efficiency of diagnosis and treatment and significantly reducing the time and manpower wasted on photographing teeth. The present invention relates to a mouthpiece-type intraoral imaging device using a lensless camera, and a dental diagnosis and management system using the same.

The embodiment of the utility model provides a shell-shaped appliance, an orthodontic system and a dental model, and solves the problem of stress concentration of an occlusal surface when a convex part is provided with a reinforcing ridge in a counterpoint manner. The shell-shaped appliance comprises a shell-shaped body used for containing teeth, the shell-shaped body is of an integrally-formed structure, and the shell-shaped body is provided with a first protruding part for reconstructing the occlusal position of the upper jaw and the lower jaw in a protruding mode in the occlusal direction of a rear tooth area. The cheek side face of the first protruding part is provided with a first reinforcing ridge for improving the deformation resistance of the first protruding part, the cheek side face of the first protruding part is concaved inwards to form the first reinforcing ridge, and the tongue side face of the first protruding part is provided with a second reinforcing ridge for improving the deformation resistance of the first protruding part. The tongue side face of the first protruding part is concaved inwards to form the second reinforcing ridge, and at least two adjacent first reinforcing ridges and second reinforcing ridges are arranged in a staggered mode in the buccal tongue direction.

The invention relates to the technical field of data processing, and discloses a tooth three-dimensional model parameterization description method, which comprises the following steps: carrying out standardization processing on local point cloud data of teeth to obtain three-dimensional model data of the teeth; meshing the three-dimensional model data to obtain triangular mesh model data of the teeth; integrating a dental crown edge, an occlusal surface and a root boundary region in the triangular mesh model to obtain a key feature region of the tooth; according to curvature change characteristics in the key feature region, identifying anatomical mark points of the teeth, and removing noise points in the anatomical mark points to obtain a feature point set of the teeth; mapping the feature point set to a two-dimensional parameter space, generating a continuous parameterized surface through radial basis function interpolation, and performing geometric reconstruction on the parameterized surface to obtain a parameterized description model of the tooth; outputting the parameterized description model as parameterized description of the teeth; according to the method, the parameterized description efficiency of the tooth three-dimensional model can be improved.

The present invention relates to the technical field of medical devices, and particularly relates to a positioning structure and method for osteotomy and bone reconstruction. The positioning structure for osteotomy and bone reconstruction includes a positioning assembly; the positioning assembly includes an upper jaw positioning guide plate, a lower jaw osteotomy guide plate, and a reconstructed bone positioning guide plate; the upper jaw positioning guide plate has an upper jaw occlusal surface, an upper N-shaped splicing mechanism, a plurality of positioning holes, and a plurality of fixing holes; the lower jaw osteotomy guide plate has a lower N-shaped splicing mechanism, a connection area, a lower jaw lower edge indication area, and an osteotomy guiding surface; the reconstructed bone positioning guide plate includes an indication guide plate and a plurality of C-shaped connecting rods; after the upper jaw positioning guide plate is fixed, the insertion and cooperation of the two lower jaw guide plates can guide all the key steps of the operation, without repeated disassembly and adjustment, and maintain accurate positioning and intermaxillary distance to facilitate subsequent implant restoration; based on the upper jaw dentition, the lower jaw osteotomy position and the reconstructed bone position can be positioned, and it can be applied to patients with tooth loosening or lower jaw dentition loss caused by various reasons.

The invention provides a jaw pad model determination method and device, computing equipment and a storage medium. The jaw pad model determination method comprises the steps that first tooth model data and first jaw pad model data are acquired; according to the first tooth model data, determining a first position of a key point of a target tooth to be added with a jaw pad in the first correction step; the key point is used for indicating the position of the jaw pad to be added on the occlusal surface of the target tooth; according to the second tooth model data, determining a second position of the key point of the target tooth to be added with the jaw pad in the second correction step; determining movement information of each key point according to the first position of each key point and the second position of each key point; and determining a second jaw pad model corresponding to the target tooth in the second correction step according to at least one of the movement information of each key point, the first jaw pad model data and the corresponding occlusion relationship of the target tooth in the second correction step. According to the scheme, the corresponding jaw pad model can be adaptively generated for each patient.

The utility model discloses a saliva aspirator which comprises a saliva aspirating head, an occlusion part is arranged on the saliva aspirating head, an anti-skid structure is formed on the occlusion part, a cavity is formed in the saliva aspirating head, a plurality of aspirating holes are formed in the saliva aspirating head, and the aspirating holes are communicated with the cavity; one end of the connecting tube is connected with the saliva suction head, and a circulation channel is formed in the connecting tube and communicated with the cavity. According to the saliva aspirator disclosed by the utility model, the friction force between the tooth occlusal surface and the saliva aspirating head can be increased by arranging the anti-slip structure on the occlusal part, so that the saliva aspirating head can be effectively prevented from being separated during use, the reliability of the saliva aspirator during use can be improved, and the aspirating continuity of saliva can be ensured; meanwhile, in the attachment bonding process, the teeth tightly bite the saliva suction head, and the saliva suction head can play a role similar to chewing, so that the invisible orthodontic appliance template is tightly attached to the teeth, and the attachment bonding accuracy and firmness can be improved.

The invention relates to a device for cleaning surfaces such as teeth, interdental spaces and adjacent gums, characterized in that the cleaning device comprises at least one shuttle which has at least one first movable filament arrangement designed for cleaning occlusal surfaces and at least one second filament arrangement designed for cleaning lateral surfaces, interdental spaces and adjacent gums, wherein the extension of the filaments of the first and second filament arrangements are perpendicular to each other, and wherein the filament arrangements extend in a brush-like or spring-like manner into a cleaning space bounded by them.

The application provides a combined device of an accessory and a shell-shaped appliance and a manufacturing method thereof, the accessory comprises a tooth accessory fixed on a tooth surface and a dental model accessory fixed on a dental model, the tooth accessory is smaller than the dental model accessory, the occlusal surface of the dental model accessory forms different degrees of occlusal contact with the opposite teeth, so that the shell-shaped appliance generated based on the dental model with the dental model accessory fixed thereon can enhance the seating by using the occlusal force, there is a gap between the occlusal surface of the dental model accessory and the introduction surface of the tooth accessory, so that there is a gap between the accessory cavity of the shell-shaped appliance and the tooth accessory, the appliance has a larger surface area and better elastic performance in the accessory part, which is beneficial to enhance the seating and express the correction force, in addition, the occlusal surface of the dental model accessory can also be designed to have the functions of lifting the occlusion and leading the lower jaw.

The invention relates to the technical field of orthodontic appliances, in particular to a self-adjusting arch expander based on hydraulic transmission, which comprises a jaw plate and a tooth sleeve, the tooth sleeve is arranged on the side wall of the jaw plate, a liquid storage bag is arranged in the tooth sleeve, and after the tooth sleeve is worn on a tooth, the liquid storage bag is positioned on a tooth occlusal surface; the jaw plate comprises a first part and a second part which can be far away from each other, a connecting pipe is arranged between the first part and the second part, and two ends of the connecting pipe are respectively arranged in the first part and the second part; a piston is arranged in the connecting pipe and provided with a push rod, the push rod is connected with the first part and the second part, so that when the piston pushes the push rod to move, the first part and the second part are pushed to be away from each other, a one-way valve is arranged in the connecting pipe, and the liquid storage bag is communicated with the one-way valve. According to the occlusal force of a patient, automatic arch expansion is achieved, the size of arch expansion force can be adjusted in a self-adaptive mode according to the size of the occlusal force of the patient, and the effect of improving the comfort and convenience of the patient after wearing is achieved.

The present application relates to the technical field of oral orthodontic appliances, in particular to a self-adjusting arch expander based on hydraulic transmission, which comprises a jaw plate and a tooth sleeve, the tooth sleeve is arranged on the side wall of the jaw plate, and a liquid storage bag is arranged in the tooth sleeve; after the tooth sleeve is worn on the teeth, the liquid storage bag is on the occlusal surface of the teeth; the jaw plate comprises a first part and a second part which can move away from each other, a connecting pipe is arranged between the first part and the second part, and the two ends of the connecting pipe are arranged in the first part and the second part respectively; a piston is arranged in the connecting pipe, a push rod is arranged on the piston, and the push rod is connected with the first part and the second part, so that when the piston pushes the push rod to move, the first part and the second part are pushed away from each other; a one-way valve is arranged in the connecting pipe, and the liquid storage bag is communicated with the one-way valve. The present application can automatically expand the arch according to the occlusal force of the patient, and can adaptively adjust the size of the arch expansion force according to the size of the occlusal force of the patient, thereby improving the comfort and convenience of the patient after wearing.

The application discloses a kind of based on photosensitive bioceramics deciduous tooth additive manufacturing forming process, it is related to ceramic deciduous tooth manufacturing technical field, comprising the following steps: using oral scanner to collect children's dental three-dimensional data, generate deciduous tooth restoration three-dimensional data model and export STL format deciduous tooth repair model;Using photosensitive liquid bioceramic composite material, through DLP photocuring 3D printing into initial blank, again through blue light three-stage resolidification and get blank body.In the process, the morphological characteristics of adjacent healthy deciduous teeth can be accurately extracted, and the crown height correction coefficient is automatically matched according to the age of the child, effectively compensating for the size deviation of the unerupted deciduous teeth, ensuring that the size error of the restoration is small, adjusting the occlusal surface morphology of the restoration according to the actual data of the teeth at the same time, making the occlusal contact area ratio higher, and reserving occlusal buffer space to avoid excessive local stress, significantly improving the mastication comfort and durability of the restoration.

This disclosure discusses a technique for fabricating occlusal interference elements within polymer dental instruments. The technique discloses at least one polymer shell containing several cavities molded to fit over a patient's tooth. The polymer shell includes an occlusal instrument surface molded to fit over the patient's occlusal tooth surface. One or more occlusal interference elements are formed within the occlusal instrument surface, each occlusal interference element including a partially disc-shaped feature that extends radially away from the occlusal tooth surface when the patient wears it.

The present application relates to a kind of personalized orthodontic bite gum, the bite gum is used to cooperate with the use of invisible aligner, the bite gum is horseshoe structure in horizontal plane view, it is wedge structure of back thin front thick in sagittal plane view;The bite gum includes bite gum pad, buccal side, lingual side, the buccal side and the lingual side extend to dental arch buccal side and lingual side from the bite gum pad;The bite gum is provided with the avoidance of corresponding arrangement with the invisible aligner, the avoidance is used to avoid weak position on the invisible aligner.The bite gum provided by the present application is mainly aimed at the cases of tooth extraction, tooth defect, replacement tooth period, tooth occlusal surface design, etc.Special device case, by setting avoidance, the bite gum can avoid weak position on the invisible aligner, prevent the deformation of aligner due to the use of bite gum, affect the treatment effect, reduce the use requirement to patient, improve the use efficiency of bite gum, save time.

The invention discloses a dental correction system, which comprises a first dental instrument, a second dental instrument, a third dental instrument, a fourth dental instrument, a fifth dental instrument and a sixth dental instrument, each first shell-shaped tooth appliance comprises a first shell for accommodating and positioning teeth and a jaw repositioning element extending from the buccal side or the tongue side or the occlusal surface; a second dental instrument comprising k2 second shell-shaped dental appliances designed to progressively move the teeth of the patient from the stage target tooth layout of the jaw reconstruction stage of the first dental instrument to the target tooth layout to implement a dental correction plan; the third dental instrument comprises k3 third shell-shaped tooth correctors used for gradually adjusting the teeth of the patient from the actual tooth layout at the end of the first dental instrument to the stage target tooth layout, the correction period of tooth correction with the jaw position relation needing to be adjusted can be shortened, and the invention further discloses a corresponding design method.

The invention provides a digital false tooth processing system and method, and the method comprises the steps: obtaining a plurality of local point cloud views of the surface of a target false tooth processing part, carrying out the point cloud classification based on surface curvature features, and obtaining a feature point cloud set of a complex occlusal surface and a non-feature point cloud set of a flat axial surface; performing multi-view registration of adaptive geometric characteristics on the feature point cloud set and the non-feature point cloud set to obtain a complete three-dimensional point cloud of the target false tooth machined part; performing fine registration on the complete three-dimensional point cloud and the three-dimensional point cloud of the target false tooth design model based on the point cloud overlapping rate to obtain a registration residual error between corresponding point pairs of the target false tooth processing part and the target false tooth design model; and performing normalization and color mapping on all the registration residuals to generate an error thermodynamic diagram of the machining precision of the target false tooth machined part. By adopting the scheme of the invention, high-efficiency, high-precision and result-visualized automatic processing error detection can be carried out on the false tooth processing part with complex mixed geometric characteristics.