32 results about "Dental structure" patented technology

The application discloses a kind of intelligent preparation systems of laser navigation milk teeth root canal, it is related to milk teeth root canal treatment field, including: image processing module, self-checking registration module, structure acquisition module, spectral processing module, anomaly detection module, fusion determination module, compensation tracking module, digital modeling module, simulation learning module, trajectory generation module, execution monitoring module, safety protection module, interactive command module and record audit module;The application can more accurately distinguish infected dentin and healthy dentin, reduce the risk of misjudgment or missing infected areas, effectively reduce the risk of root tip penetration and root tip tissue damage, so that the laser cutting process always revolves around the real infected area, both can fully remove infected tissue, and can maximize the retention of healthy dental structure, improve root canal preparation efficiency and safety, reduce the dependence of doctors on experience judgment, so that milk teeth root canal preparation operation is more standardized and repeatable.

Disclosed is a computer-implemented method for determining and displaying distances between two three-dimensional (3D) models of dental structures, the method comprising the steps of obtaining an active three-dimensional (3D) model of a first dental structure, the active 3D model comprising a plurality of facets describing a surface of the first dental structure in 3D space, obtaining a reference three-dimensional (3D) model of a second dental structure, the second 3D model comprising a plurality of facets describing a surface of the second dental structure in 3D space, setting a first positive threshold value for a maximum relevant distance, generating a first facet search data structure for the reference 3D model using a graphics processing unit (GPU), for each vertex in the active 3D model, determining the distance to the nearest facet in the second reference 3D model up to the threshold value using at least the generated facet search data structure for the reference 3D model and displaying the determined distances in a graphical user interface on a display.

This disclosure provides an AI-based system for an intraoral support receptacle (OSR) of an intraoral appliance. The AI-based system comprises an electronic device (ED) and an OSR. The OSR determines whether an intraoral appliance is present inside the OSR and, if an intraoral appliance is present, emits a mist. The OSR captures an image / video of the intraoral appliance and transmits the captured image / video to the ED. The ED receives the captured image / video, uses the image / video to determine the type of intraoral appliance, and uses the image / video to determine at least one feature of the intraoral appliance based on the type. The ED generates a 2D and / or 3D dental structure based on at least one feature of the intraoral appliance and the image / video. The ED uses a trained AI model to compare the 2D and / or 3D dental structure with at least one of historical dental structure images and associated metadata within the ED and provides information about the dental structure data based on the comparison.

The present invention provides a non-abrasive oral care composition comprising a perfume for imparting fragrance and a natural additive for imparting additional properties, the oral care composition further comprising a plant-based anionic surfactant and a plant-based nonionic surfactant, the method is used for forming a layer of protective film on an applied dental structure. Optionally, the oral care composition also includes a vegetable amphoteric surfactant for stabilizing the composition and enhancing the coating and foaming effects. The composition may further include an essential oil for imparting a taste, menthol for providing a cool feeling, a sweetener for imparting a pleasant mouth feel to the composition, and a preservative for preventing growth of microorganisms.

The demand for biocompatible dental materials has increased significantly, particularly in vital pulp therapy, due to the need for materials that promote tissue regeneration and long-term success. This invention introduces a novel Nanocarbon Platelets-Enhanced Portland Cement Composite that combines the well-established properties of Portland cement with the advanced mechanical and biological characteristics of graphene oxide nanocarbon platelets. This composite is designed to serve as both a restorative material and an agent for vital pulp therapy. The integration of graphene oxide nanocarbon platelets enhances the composite's mechanical properties while maintaining superior biocompatibility. This ensures the material supports cell viability and proliferation, crucial for successful tissue integration and regeneration. The unique formulation also improves the sealing ability of the cement, providing exceptional protection against bacterial infiltration and aiding in the preservation of dental structures. This invention aims to address the limitations of existing Portland cement-based materials, such as weak mechanical properties and potential cytotoxicity, by offering a more robust and biocompatible alternative. The composite is developed with a specific focus on dental applications, ensuring it meets the demands of modern restorative and endodontic procedures. The Nanocarbon Platelets-Enhanced Portland Cement Composite offers a cost-effective solution that can be easily integrated into existing clinical practices. Its development represents a significant advancement in materials science, with potential applications beyond dentistry, such as in orthopedic and craniofacial reconstruction. This composite sets a new standard for dental materials by combining mechanical strength, biocompatibility, and ease of use, promising improved outcomes for both patients and practitioners.

This utility model discloses a jaw fork structure, relating to the field of oral medicine technology. The utility model includes a main tooth structure body, and further includes: a jaw fork portion, which is installed on the outer side of the main tooth structure body and is interconnected by splicing; and a bolt, which is installed on the jaw fork portion for adjusting and locking it in place. This utility model uses an adjustment component, specifically inserting jaw fork rod three into a groove within jaw fork rod two, then inserting the bolt into the outer hole of jaw fork rod two and into a straight groove, connecting it threadedly with the internal threaded hole. At this point, the position of jaw fork rod three can be adjusted by pushing and pulling. After adjustment, tightening the bolt causes a convex ring to enter the outer hole and contact the jaw fork rod three, locking it in place. This method allows for adjustment of the length of jaw fork rod three according to different patient needs, eliminating the need for patients to customize the jaw fork structure.

The present disclosure provides an AI-based system for an oral support seat (OSR) of an oral appliance. The AI-based system includes an electronic device (ED) and an OSR. The OSR determines whether an oral appliance is present inside the OSR and dispenses a mist when the oral appliance is present. The OSR captures an image / video of the oral appliance and transmits the captured image / video to the ED. The ED receives the captured image / video, determines a type of the oral appliance using the image / video, and determines at least one feature of the oral appliance using the image / video based on the type. The ED generates a 2D and / or 3D tooth structure based on the at least one feature of the oral appliance and the image / video. The ED compares the 2D and / or 3D tooth structure to at least one of historical tooth structure images and associated metadata in the ED using the trained AI model, and provides information about the tooth structure data based on the comparison.

The present application provides a model alignment method and apparatus, and a device. The method comprises: acquiring a dental model and a facial model of a user, the facial model comprising a first facial model and a second facial model; segmenting a first rigid region in the first facial model and a second rigid region in the second facial model; on the basis of the matching of point cloud data between the second rigid region and the first rigid region, determining a first transformation matrix for aligning the second facial model to the first facial model; on the basis of the matching of point cloud data between the dental model and a dental structure region of the second facial model, determining a second transformation matrix for aligning the dental model to the second facial model; and on the basis of the first transformation matrix and the second transformation matrix, aligning the dental model and the first facial model. By means of the described method, a dental model can be accurately aligned to a facial model that lacks dental structure regions or has relatively few dental structure regions.

The invention relates to the technical field of medical teaching display instruments, in particular to an oral medicine teaching display device which comprises a bottom plate, a ball and an adjusting assembly, the upper end of the bottom plate is provided with a first threaded sleeve through a first bearing, the upper end of the first threaded sleeve is in threaded connection with a first threaded rod, and the upper end of the first threaded rod is provided with a supporting plate; the upper end of the supporting plate is provided with a ball seat through a third bearing, the upper end of the ball seat is movably connected with a ball, and the upper end of the ball is provided with a display stand. When the device is used, a rotating handle is rotated to drive a second threaded sleeve to rotate, the second threaded sleeve drives a third threaded rod to move upwards or downwards, and a positioning block and a positioning groove structure are arranged in a matched mode, so that the third threaded rod moves upwards or downwards to conveniently drive a tooth structure model on the display stand and the fixing frame to incline; students in different directions can clearly observe tooth details (such as dental crown and tooth root forms), and the display flexibility and the teaching effect are further improved.

A method for training a neural network intended to analyze a dental situation of an updated patient. A historical learning database is created that relates to a dental body and to a spatial attribute associated with the dental body. The historical learning database includes more than 1,000 historical records, with each historical record relating to a respective historical patient. Each record including a set of historical images all depicting the dental body in the historical patient, called “historical dental body” and an item of spatial information including, for the historical patient, a set of values for the spatial attribute, called “historical spatial information.” The neural network is trained, by providing it with the sets of historical images as input and with the historical spatial information as output, with the spatial attribute defining an ordered sequence of variables in a three-dimensional reference frame.

The invention discloses an auxiliary supporting type nasal oxygen cannula suitable for a patient suffering from bucktooth and incisor tooth loss, and relates to the technical field of nasal oxygen canals, the auxiliary supporting type nasal oxygen cannula comprises a nasal oxygen cannula main body and an oral cavity supporting assembly, and the oral cavity supporting assembly is connected with the nasal oxygen cannula main body through a buckle type connecting assembly; the oral cavity supporting assembly comprises an adjustable occlusal pad and a plurality of anti-slipping buckles evenly arranged on the adjustable occlusal pad, the whole adjustable occlusal pad is of an arc-sheet-shaped structure, and the radian of the arc-sheet-shaped occlusal pad can be adjusted. The anti-slip buckle is used for hooking a gingival groove and abutting against the hard palate so as to fix the adjustable occlusal pad. According to the invention, the conversion from face fixation to stable support in the oral cavity is realized through structural innovation, a safe, comfortable and stable oxygen supply solution is provided for patients with abnormal tooth structures, the treatment compliance and life quality are remarkably improved, and the device has important clinical application value.

An object of the present invention is to provide a dental composition that shows desirable adhesive properties to tooth structure, and that has desirable mechanical strength in the form of a cured product while having low polymerization shrinkage stress. The present invention relates to a dental composition comprising: a (meth)acrylic compound (A); a monomer (B) having an acidic group and a molecular weight of less than 5,000; a monomer (C) having no acidic group and having a molecular weight of less than 5,000; and a polymerization initiator (D), the (meth)acrylic compound (A) having an average molecular weight of 5,000 to 50,000, and an average molecular weight of 1,250 or more and less than 20,000 per (meth)acryl group.

The invention discloses a CBCT tooth segmentation method fusing a slice attention mechanism and Transform semantic information, and the method comprises the following steps: 1, collecting an original CBCT image, and carrying out the preprocessing of the original CBCT image, and obtaining a preprocessed CBCT image; 2, performing'global + local 'feature preliminary extraction on the preprocessed CBCT image to obtain a multi-scale initial feature map; 3, strengthening the spatial correlation and key region focusing of the multi-scale initial feature map to obtain an enhanced feature map; step 4, processing the enhanced feature map to obtain a noise suppression-multi-dimensional fusion feature map; and 5, recovering the resolution of the original CBCT image, and outputting a segmentation result of the three-dimensional tooth structure. According to the method, the precision of tooth segmentation in the CBCT image can be remarkably improved, segmentation errors caused by noise interference and structural complexity are reduced, the spatial consistency of a segmentation result and a real structure is improved, and the method has relatively strong advantages in segmentation accuracy and integrity.

This invention discloses a teeth whitening product containing piezoelectric materials. The invention uses piezoelectric materials with a piezoelectric effect as the whitening ingredient in the teeth whitening product. By contacting the teeth with the whitening product and applying pressure to the tooth surface, the piezoelectric properties of the material are activated, generating a large number of active groups that degrade stains on the tooth surface, achieving teeth whitening. The teeth whitening product of this invention is safe and non-toxic, the teeth whitening method is simple to operate, it does not damage oral soft tissues, nor does it damage the enamel layer on the tooth surface, it does not harm the tooth structure, and it can achieve long-lasting and effective teeth whitening results.

To provide a method for determining areas of a tooth substance subject to demineralization that may occur in a dental caries case.SOLUTION: Provided is a method for detecting demineralization of a tooth substance, including the steps of: irradiating (S101) a structured light pattern onto the tooth substance; detecting (S102) a light intensity of the light pattern remitted from the volume of the tooth substance; and determining (S103) demineralization of the tooth substance based on the detected light intensity.SELECTED DRAWING: Figure 4

The present disclosure relates to computer implemented method (1100) for generating a visualization model (110D) of an oral cavity. The method includes obtaining (1102) image data (202) associated with an image (202A) of a patient, determining (1104) oral cavity data (110A) associated with an oral cavity of the patient based on the image data (202), retrieving (1106) a three-dimensional (3D) dental model (106A) and a 3D template gingiva model (106B), and determining (1108) one or more alignment parameters (520A, 532A) for aligning at least one of a first portion of the 3D dental model, or a second portion of the 3D dental model with the dental structure of the oral cavity based on the oral cavity data. The method further includes determining (1110) one or more intensity parameters (110B) for matching a first set of colors of the 3D template gingiva model with a gingiva structure (704) based on the oral cavity data, generating (1112) a set of pixel values (110C) for a second set of colors of the 3D dental model based on the oral cavity data and one or more visualization attributes, and generating the visualization model based on the 3D dental model, the 3D template gingiva model, the one or more alignment parameters, the one or more intensity parameters and the set of pixel values.

To provide a dental adhesive composition having high adhesiveness to dentine and high preservability.SOLUTION: A dental adhesive composition comprising a first polymerizable monomer, a second polymerizable monomer, and a third polymerizable monomer, wherein the first polymerizable monomer has only one group selected from the group consisting of a urethane group, a urea group, and a carbonate group, the second polymerizable monomer has a (meth)acrylamide group, and the third polymerizable monomer has an acid group.SELECTED DRAWING: None

A custom tool for forming a dental restoration in an oral cavity of a patient, the custom tool comprising an integrally formed mold body providing a custom fit with at least one tooth of the patient, the integrally formed mold body comprising: an occlusal portion, the occlusal part forms an occlusal surface corresponding to the occlusal surface of the teeth; a mesial proximal portion forming a mesial proximal surface corresponding to the mesial proximal surface of the tooth; and a distal proximal portion forming a distal proximal surface corresponding to the distal proximal surface of the tooth. The mold body is configured to combine with a tooth of a patient to form a mold cavity that encompasses a missing tooth structure of the tooth. The bite portion, the mesial proximal portion, and the distal proximal portion are based on three-dimensional scan data of the patient's oral cavity.

To provide a tooth structure measurement device and a tooth structure measurement method capable of grasping an index which indicates a thickness of a dentin layer using a terahertz pulse wave.SOLUTION: A wave reception part 120 receives a first reflection wave RW1 reflected on a first interface 221 and a second reflection wave RW2 reflected on a second interface 222 of a terahertz pulse wave which entered an object tooth 200. A reflection interval measurement part 131 measures a first reflection interval which is a time difference between time when the first reflection wave RW1 is received and time when the second reflection wave RW2 is received. A user designated on a designation part 133, to which layer the second dentin layer 212 corresponds, out of a plurality of kinds of propagation speed known dentin layers for which a propagation speed of a terahertz wave is known in advance. A calculation part 135 calculates an index which indicates a thickness of the second dentin layer 212, using the known propagation speed of the terahertz pulse wave on the propagation speed known dentin layer which is designated as the layer corresponding to the second dentin layer 212, and the first reflection interval.SELECTED DRAWING: Figure 7

The utility model discloses an orthodontic implant anchorage handle, including handheld pole, rotary handle, installation head, transmission square stick, multi -rib slide bar, screw rod, pivot, worm wheel and sleeve, rotary handle end part is equipped with square hole, inside slide mounting transmission square stick, and one end of transmission square stick is connected with multi -rib slide bar, and the other end is connected with pivot, and pivot drives worm wheel and engages, and worm wheel coaxial connection sleeve, and sleeve end part is equipped with installation hole to adapt orthodontic bone nail, and handheld pole surface is equipped with limit bridge and sliding slot, and installation head is connected in sliding slot through support stick, and multi -rib slide bar and screw rod thread cooperation adjust handle length, the utility model discloses can effectively avoid oral cavity tooth structure to expand operating space, and through length adjusting structure adaptation different parts and need, and transmission structure stable and reliable promotion screw in precision, and antiskid and guide design enhances one -handed control convenience and overall stability.

The present invention provides a non-abrasive oral care composition comprising a fragrance and natural additives to provide additional properties, wherein the oral care composition further comprises a plant-derived anionic surfactant and a plant-derived nonionic surfactant to form a protective coating on the structure of the teeth. Optionally, the oral care composition also comprises a plant-derived amphoteric surfactant to stabilize the composition and enhance coating and foaming. The composition may further comprise an essential oil to provide flavor, menthol to provide a cooling sensation, a sweetener to give the composition a pleasant taste, and a preservative to prevent microbial growth.

The utility model discloses a bionic service type humanoid robot mouth structure which comprises a sensory system and a mouth system connected with the sensory system, and the mouth system comprises a jaw structure, a tooth structure, a lip structure and a tongue structure. The jaw structure, the tooth structure, the lip structure and the tongue structure receive control signals sent by the sensory system to execute corresponding motions, the sensory system is formed by the sensing center, the sensor network, the signal processing unit and the execution unit, timely and effective feedback can be made to external environment changes, and the interaction capacity with the outside is greatly improved; meanwhile, according to the taste sensor, the humanoid robot can test and evaluate the food under the condition that no human testee exists, and the taste sensing system can simulate the function of a human taste sensing system, so that the taste of the food is automatically evaluated.

The present invention provides a solvent-free dental adhesive composition exhibiting high initial bond strength and high bond durability to a tooth structure and being substantially free of water and an organic solvent. The present invention relates to a solvent-free dental adhesive composition comprising: an acid group-containing polymerizable monomer (A); a hydrophobic polymerizable monomer (B) having no acid group; and a photopolymerization initiator (C), wherein the photopolymerization initiator (C) comprises at least one selected from the group consisting of a compound (C-1) having a particular structure and a compound (C-2) having a particular structure.

The invention relates to a milling tool for seating a screw in a dental structure, the screw being provided to be joined to a dental implant, wherein the tool comprises a coupling region provided for coupling to a milling machine and a working region defined by a rod that on one end supports a head having a plurality of cutting blades radially distributed with respect to a longitudinal axis of the coupling region, wherein each cutting blade has a lower cutting surface. Said lower cutting surface has a region with a convex curvature which has a radius that varies between a maximum and a minimum value, the maximum value of the radius being equal to 0.1350*Dh, wherein Dh corresponds to the diameter of the effective area of the milling tool, and the minimum value of the radius complying with the formula:Rmin=125⁢2·0.0012⁢Dh3.2

To obtain a dental composition capable of providing a cured product having excellent adhesive strength to a dental porcelain and a resin block even without carrying out a hydrofluoric acid treatment and further having excellent adhesive strength to dentin.SOLUTION: The dental composition includes a monomer (A) having an acidic group, a monomer (B) having no acidic group, a polymerization initiator (C), a silane coupling agent (D), and water (E). The silane coupling agent (D) contains a first silane coupling agent (D1) having a polymerizable group and a second silane coupling agent (D2) having a hydrogen-bonding group different from both the polymerizable group and a silanol group of the first silane coupling agent (D1), and the monomer (B) having no acidic group contains a monomer (B1) having an amide group without an acidic group.SELECTED DRAWING: None

A custom tool for forming a dental restoration in an oral cavity of a patient, the custom tool comprising an integrally formed mold body providing a custom fit with at least one tooth of the patient, the integrally formed mold body comprising: an occlusal portion, the occlusal part forms an occlusal surface corresponding to the occlusal surface of the teeth; a mesial proximal portion forming a mesial proximal surface corresponding to the mesial proximal surface of the tooth; and a distal proximal portion forming a distal proximal surface corresponding to the distal proximal surface of the tooth. The mold body is configured to combine with a tooth of a patient to form a mold cavity that encompasses a missing tooth structure of the tooth. The bite portion, the mesial proximal portion, and the distal proximal portion are based on three-dimensional scan data of the patient's oral cavity.

The invention relates to a manufacturing method of an orthodontic appliance set, the set comprises at least two appliances with different appliance shell materials, the method at least comprises the following processing steps: a) providing at least two different solid tooth jaw models, each tooth jaw model comprises a substrate and a tooth structure arranged on the substrate, the tooth structure at least defines a part of the current or future tooth structure of the patient, and each model is provided with an independent identification code, and the identification code comprises information at least encoding a specific patient and an appliance shell material; b) putting the at least one solid tooth jaw model provided in the step a) into a deep drawing forming cavity; c) reading the independent identification code on the entity tooth jaw model, and displaying at least the related information of the coded appliance shell material, the reading operation being performed after the step a) and before the step d); d) selecting a corresponding specific appliance shell material according to the coded information in the step c); e) placing the selected shell material of the orthodontic appliance on the solid tooth jaw model, heating the shell material before, during or after placing the shell material, and performing deep drawing forming on the shell material and attaching the shell material to the solid tooth jaw model so as to manufacture a single orthodontic appliance; f) taking out the dental model and the orthodontic appliance from the deep-drawing forming cavity; and g) repeating the steps b) to f) until the processing of each solid tooth jaw model in the set is completed. In addition, the invention also relates to a system for processing an orthodontic appliance set comprising one or more orthodontic appliances.

Method and / or apparatus embodiments for 3-D cephalometric analysis of a patient according to the application can display reconstructed volume image data from a computed tomographic scan of a patient's head including segmented dentition elements having an initial arrangement from one or more 2D / 3D views; can compute and display a plurality of cephalometric parameters for the patient according to the reconstructed volume image data; then use the patient specific cephalometric parameters and population biometry data, to identify one or more maxillofacial / dental abnormalities; and compose patient specific treatment plans to correct selected dentition abnormalities using maxillofacial / dental structure, which can be composed in a final tooth arrangement in a final virtual CT volume. One or more aligners can be generated to incrementally move dentition from the initial arrangement to the final tooth arrangement.

The invention discloses a dental restoration and a preparation method thereof, and relates to the technical field of dental restoration and the like. The dental restoration comprises a restoration body, the restoration body comprises a gingival structure and a plurality of tooth structures, and the tooth structures are arranged in the extension direction of the gingival structure; the one or more holes are located in the prosthesis body and penetrate through at least part of the gingival structure and at least part of the tooth structure; the gingival structure is provided with a first side and a second side which are arranged oppositely, at least one of the first side and the second side is provided with a concave part, and the concave part extends in the extension direction of the gingival structure; and the concave part and the one or more holes are at least 0.8 mm away from each other at the gingival structure part. The problem that strength improvement of a current dental restoration is limited at least can be solved.