116 results about "Occlusal surface" patented technology

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.

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 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 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 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 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 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.

The utility model relates to the technical field of dentistry. The utility model relates to a muscle agonist for linked correction of upper and lower teeth. The muscle agonist comprises an upper invisible tooth socket and a lower invisible tooth socket, wherein the upper invisible tooth socket is sleeved outside upper teeth; the lower invisible tooth socket is sleeved outside lower teeth; the incisor part of the lower invisible tooth socket is detachably connected with the incisor part of the upper invisible tooth socket; the occlusal surface at the molar position of the lower invisible tooth socket is connected or detachably connected with the occlusal surface at the molar position of the upper invisible tooth socket through a V-shaped bent connecting strip; an angle forming plate is clamped between the upper invisible tooth socket and the lower invisible tooth socket, and the angle forming plate is positioned on the occlusal surface of at least one of the upper invisible tooth socket and the lower invisible tooth socket. According to the utility model, by optimizing the structure of the muscle agonist, the upper invisible tooth socket can be conveniently matched with upper teeth, and after the upper invisible tooth socket is matched with lower teeth, the incisor part of the lower invisible tooth socket is detachably connected with the incisor part of the upper invisible tooth socket, so that the alignment of an upper jaw and a lower jaw is realized, and the correction of dentition deformity of relative protuberance of the upper jaw and retroduction of the lower jaw is realized.

The utility model belongs to tools used for orthodontic treatment of oral and maxillofacial surfaces, and particularly relates to an improved orthodontic movable retainer for malocclusion. The problems that in the background technology, a steel wire used for manufacturing a labial arch and a clamping ring is a 09 steel wire and cannot be too thin, when the steel wire passes through an occlusal surface gap between 34 and 56, teeth are prone to being cushioned, the occlusal degree is too high, the tooth gap is prone to being widened, the adjacency relation of teeth is damaged, and a patient feels uncomfortable when wearing the steel wire are solved. If a groove is ground at the position, the problem of overhigh occlusion is solved. According to the technical scheme, an upper jaw base and a lower jaw base are fixedly connected with a hyperbolic labial arch through connecting steel wires respectively, a clamping ring is formed at the rear end of the hyperbolic labial arch, a check block is arranged on the arc top of the upper jaw base, and a traction curve is formed on the front portion of the clamping ring on the hyperbolic labial arch connected with the lower jaw base. The device is suitable for maintaining the oral and maxillofacial orthodontic state.

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

The present disclosure relates to a device (100) for the treatment and / or prevention and / or testing of bruxism or craniomandibular dysfunction, sleep apnea and other parafunctional movements such as tongue thrusting, which is designed to be arranged between the upper and lower jaw of a user in a dental appliance or to form a dental appliance, the device comprising a biofeedback unit, in particular a mechanism as a simultaneous sensor and feedback transmitter for biofeedback or in particular a mechanism,which, upon reaching a predetermined threshold of jaw movement and / or the force resulting from a jaw movement, snaps from a first state to a second state with a switching behavior, generating feedback to the user via one or more of the human senses, and returns to the first state when the force from the jaw movement ceases, or a sensor offset towards the occlusal surfaces, or an arrangement in a section of a mandibular occlusal splint that spans or bridges the legs (bridging section). Further devices and methods for manufacturing are also disclosed.

This invention provides a basic jaw pad, a dental instrument, and a preparation method. The basic jaw pad includes a first support portion and a second support portion connected to each other. After the basic jaw pad is installed in the through hole of an orthodontic appliance, at least a portion of the first support portion is located within the cavity of the orthodontic appliance for accommodating the dentition. The first support portion mates with the occlusal surface of the dentition on which the orthodontic appliance is worn. At least a portion of the second support portion is located outside the orthodontic appliance and protrudes towards the occlusal surface of the opposing dentition. The basic jaw pad has a preset basic shape, and at least the material of the second support portion of the basic jaw pad is a polished material. This invention improves the versatility of the basic jaw pad, enabling mass production. Furthermore, clinicians can make real-time adjustments and optimizations based on the target positions of the upper and lower jaws in the patient's occlusal state, the specific situation during actual wear, and patient feedback, thereby improving the orthodontic effect.

The utility model relates to the technical field of orthodontic medical instruments, in particular to an invisible appliance with a jaw pad, which comprises an upper jaw appliance and a lower jaw appliance which are used for accommodating teeth, the jaw pad is arranged in a rear tooth area of the upper jaw appliance, the jaw pad is of a hollow structure protruding towards the opposite jaw direction, and the lower jaw pad is of a hollow structure protruding towards the opposite jaw direction. The jaw pad is matched with the occlusal surface of the occlusal teeth in an opposite occlusal manner; the width of the side, close to the anterior tooth end, of the jaw pad is smaller than that of the side, close to the posterior tooth end, of the jaw pad, the two side edges, in the dentition direction, of the jaw pad are each provided with a plurality of first inwards-concave structures, and the first inwards-concave structures are symmetrically arranged on the two sides of the jaw pad. According to the invisible orthodontic appliance disclosed by the utility model, the first concave structures are arranged on the two sides of the jaw pad along the arrangement direction of dentition to form reinforcing structures, so that the structural strength can be effectively enhanced, and meanwhile, the second concave structures are respectively arranged at the two ends of the jaw pad, so that the strength of the jaw pad is further improved, the occlusion strength of a tooth socket is improved, and the orthodontic effect can be effectively improved.

An image processing apparatus includes a first reading unit configured to read a first image to read a visible light image of an occlusal surface in a mouth cavity, a second reading unit configured to read a second image to read a visible light image in a state where teeth are occluded, a determination unit configured to determine dentition and states of the respective teeth based on the first image, the second image, and a trained model, and an output unit configured to output a result of a determination made by the determination unit.

The invention provides a vertical control type silica gel jaw pad appliance for high-angle cases, which comprises an appliance body, a tooth accommodating groove and a jaw pad structure are arranged on the appliance body, and a wedge-shaped structure is arranged at the tail end part of the jaw pad structure; the wedge-shaped structure is provided with a guide surface, and the guide surface is an inclined surface which is formed when the tooth positioning groove is in an occlusion state and is formed by taking an occlusal surface as a base surface and is inclined downwards relatively; when teeth make contact with the guide face of the wedge-shaped structure, upward correction force which is provided by the guide face and is close to the rear portion of the oral cavity can be obtained, the correction force can guide maxillary rear teeth to extend in the direction close to the throat, and anterior displacement of the mandible is induced through change of the occlusion relation.

The utility model discloses a shell-shaped dental instrument and a shell-shaped dental instrument component, the shell-shaped dental instrument comprises an appliance and a supporting unit, the appliance is provided with a cavity for accommodating teeth, and the occlusal surface of the appliance comprises a supporting surface corresponding to the occlusal surface of a certain rear tooth. The supporting surface comprises a first supporting surface positioned in the middle and a second supporting surface arranged around the first supporting surface, a separation line between the first supporting surface and the second supporting surface passes through the plurality of tips, the plurality of tips respectively correspond to a plurality of tooth tips of the rear teeth, the supporting unit is positioned on the supporting surface, and a first outer peripheral edge line is formed in a junction area of the supporting unit and the supporting surface; the first outer peripheral line comprises a first part located on the first supporting face and a second part located on the second supporting face, the second part is connected with the first part, and the second part is located on the cheek side or the tongue side of the first supporting face. The supporting unit extends to the second supporting surface, so that the contact area between the supporting unit and a jaw occlusal surface can be increased, and the purpose of stable occlusal is achieved.

The present disclosure provides methods, computing device readable medium, and devices for dental appliances with repositioning jaw elements. An example of a method can include moving at least one tooth with a dental appliance having a first shell configured to receive a plurality of teeth of a patient's upper dentition and separating an upper dentition of a patient from a lower dentition of the patient utilizing the dental appliance. The dental appliance may interface a first surface of a first repositioning jaw element of the first shell with a second surface of a second repositioning jaw element of a second shell of the dental appliance. The dental appliance separates occlusal surfaces of the plurality of teeth of the patient's upper dentition from occlusal surfaces of the plurality of teeth of the patient's lower dentition as the patient moves to a fully engaged sagittal jaw position.

The application provides an orthodontic tooth movement monitoring method and system based on wax occlusion records, which comprises the following steps: obtaining an intraoral scanning model and a cone beam CT tooth model at time T0, superimposing the two models to obtain a complete model of each tooth containing a tooth crown and a tooth root; obtaining a wax occlusion record at time T N , optically scanning the wax occlusion record to obtain a three-dimensional digital model of the occlusion record and uploading the three-dimensional digital model; matching the occlusion pits of the digital model of the occlusion record with the occlusal surfaces of the complete model of each tooth to restore a tooth position model at time T N ; superimposing the tooth position models at times T0 and T N , and establishing a local three-dimensional coordinate system for each tooth; calculating three-dimensional movement data of the teeth; and a doctor remotely monitors the tooth movement of a patient with high accuracy by obtaining accurate three-dimensional data of the tooth position changes, provides reliable data for subsequent correction, and guides the next treatment of the patient.

The utility model relates to medical forceps technical field, concretely relates to an improved bone rong, including the bone rong formed by the two forceps body connected through hinge screw, still include: mounting screw, recess, the recess sets up in the mouth position of bone rong, and the mouth position occlusal surface is set into dentate; Two The forceps body is fixedly connected with elastic member through mounting screw. The jaw recess can be increased by widening the jaw of bone rong, so it can accommodate larger, more bone block, in addition, the blade on both sides of the jaw does not easily form interference when trimming large bone block; The jaw is toothed, the tooth tip contacts the bone surface when using, reduces the contact area, under the condition of equivalent force, the contact area reduces, and the pressure increases, so the bone rong can be more smoothly bitten into the bone surface and cut off the bone block, in other words, this design can save the effort, and prevents skidding when using.

The invention relates to the technical field of denture occlusal surface image processing, in particular to an intelligent occlusal vertical distance reconstruction device for an edentulous patient and an algorithm of the intelligent occlusal vertical distance reconstruction device, and the intelligent occlusal vertical distance reconstruction device comprises the intelligent occlusal vertical distance reconstruction device and the intelligent occlusal vertical distance reconstruction algorithm. The method is used for positioning the gingiva position of an edentulous jaw patient, and the purpose of reconstructing the occlusion vertical distance is achieved by matching the occlusion vertical distance before tooth loss with the bone face capacity before tooth loss through an intelligent occlusion vertical distance reconstruction algorithm; the method is easy to operate, high in practicability and very convenient to use, the occlusion vertical distance can be effectively reconstructed, the occlusion distance of all parts of the gingiva can be reconstructed in a regional mode, and the false tooth manufactured through the data has the function of supporting the anterior bone face of a patient without teeth.

The invention discloses a digital evaluation system for an alveolar bone morphological structure, a computing device and a storage medium, and the system comprises a data preprocessing module which is used for obtaining three-dimensional image data obtained by carrying out CT or nuclear magnetic resonance examination on teeth and alveolar bones around the teeth, and completing the conversion and standardization of the three-dimensional image data; the quadrant division module is used for determining a space coordinate system constructed by taking a tooth as a central point and a tooth long axis as a central axis according to the three-dimensional image data, and dividing a plurality of quadrants according to an occlusal surface of the tooth; and the alveolar bone evaluation module is used for evaluating the overall form or structure of the alveolar bone (such as the defect state of the alveolar crest and / or the side wall of the alveolar bone) according to each quadrant. The scheme has the advantages of simplicity and convenience in operation, accuracy in evaluation, intuitive result and the like, and has wide application prospects in the field of oral medicine.

The present disclosure relates to a device (100) for the treatment and / or prevention and / or testing of bruxism, which is designed to be placed in the oral cavity, preferably between the upper and lower jaws, of a user. The device comprises: an upper support element (102) designed to make contact with a portion of the upper jaw other than an upper occlusal surface; a lower support element (104) designed to make contact with a portion of the lower jaw other than a lower occlusal surface; and a spacer (106) connecting the upper support element and the lower support element. A substantial portion of the oral cavity between the lower jaw (112) and upper jaw (110) is kept free of material from the device, and the exertion of a contact force on the upper and / or lower occlusal surface is substantially reduced or prevented.Alternatively or additionally, the device is designed to hold the tongue, whereby the tongue holder prevents the tongue from falling back and the device from falling out.