19 results about "Oral Prosthesis" patented technology

The invention relates to the technical field of computer vision, and discloses a computer vision-assisted dental restoration adaptation system, which comprises an image acquisition module, an image processing module, an adaptation evaluation module, a central control module and a feedback optimization unit, high-resolution image data, including visible light images, three-dimensional scanning data and infrared images, of the interior of the oral cavity and a restoration body are obtained through multi-source imaging equipment of the image acquisition module, the form, texture and temperature distribution characteristics of the oral cavity environment are captured, and the image contrast and the alignment precision are enhanced in combination with the illumination control unit and the positioning calibration unit. Data integrity and detail visibility are ensured, and a reliable basis is provided for subsequent image processing; the image processing module performs preprocessing, feature extraction and segmentation on the acquired image data, so that the accuracy and efficiency of adaptive state analysis are improved.

The application discloses a kind of low food jam rate's oral prosthetic tooth manufacturing method, applied to medical health field, comprising: obtaining the full surface three-dimensional data of tooth to be repaired area;Based on full surface three-dimensional data, the complete three-dimensional form of prosthesis is designed, and filling hole type is designed on the proximal surface area of prosthesis and tooth abutment, and the three-dimensional data of prosthesis is obtained;Based on the three-dimensional data of prosthesis, prosthesis is made, filling hole type is filled when in-mouth trial is carried out and adjusted in position, and the final prosthesis is obtained.The application designs filling hole type on the proximal surface area of prosthesis and tooth abutment in the design process of the complete three-dimensional form of prosthesis, and filling hole type is filled when in-mouth trial of prosthesis is carried out and adjusted in position, so that the relative position relationship of the abutment surface of prosthesis and adjacent tooth is close to the same level of the abutment relationship of teeth naturally and normally grown, and food jam possibly occurred after permanent bonding of prosthesis is maximized avoided.

This invention provides an aluminosilicate-based porous ceramic framework, its preparation method and application, resin-infiltrated ceramic materials and their applications, and dental prostheses, relating to the field of dental materials technology. Using Al2O3, SiO2, Na2O, and K2O as raw materials, the proportions of sodium, potassium, and silicon can be freely adjusted. By changing the relative content of sodium, potassium, and silicon, the porous ceramic framework prepared from aluminosilicate-based sodium-potassium salts exhibits different physicochemical properties. As a matrix, resin-infiltrated ceramic materials with different physicochemical properties and aesthetic characteristics can be prepared to meet the needs of various dental applications.

The invention belongs to the technical field of computer aided design, and provides a generative adversarial network-based personalized dental restoration intelligent design method, which comprises the following steps of: marking a difference set part connected with a temporary restoration region in a wearing three-dimensional model as a carrying model; carrying out combined Boolean operation on the temporary restoration body area and the undertaking model to obtain a combined part, and recording the combined part as a stress model; identifying a stress shielding area on the stress model according to the stress nephogram; performing elastic correction on the stress shielding area of the temporary restoration area to obtain a three-dimensional model of the dental restoration; the wall thickness of the strong sub-region with an unstable stress path caused by overall stress shielding is corrected through the wall thickness difference value of the corresponding elastic correction weak sub-region, the problem that overall stress shielding is converted into a local stress peak value is reduced, stress transmission is uniform, and the problem that stability fluctuates due to the fact that the stress path changes along with time is solved.

The application discloses a kind of oral prosthetic body abutment relationship image quantitative evaluation systems, belong to oral prosthetic body image processing technical field, including image acquisition and pretreatment module, feature atlas construction module, topological analysis calculation module and quantitative evaluation mapping module.Image acquisition and pretreatment module obtains the three-dimensional scanning image of prosthetic body in situ state, obtains two-dimensional development image by gray mapping and two-dimensional development, separates out highlight contact zone by multi-scale morphological opening and closing reconstruction operation;Feature atlas construction module constructs morphological feature atlas according to the morphological gradient distribution characteristics of highlight contact zone under different scales;Topological analysis calculation module tracks the continuous boundary of abutment contact zone in morphological feature atlas, and calculates the length, width and area quantitative value of contact zone;Quantitative evaluation mapping module maps quantitative value to prosthetic three-dimensional space frequency domain, generates quantitative index for evaluating the closeness of abutment relationship.

A kind of virtual try-on system of dental prosthesis based on three-dimensional scanning, it relates to the field of dental prosthetics;Extract a plurality of facial points and its displacement trajectory information, output the classification result representing the type of facial point, obtain the stability score of facial point in different preset time window, extract the stable interval of jaw position and obtain the jaw position information, and generate the try-on model in combination with the maxillary model, the mandibular model and the prosthesis model, obtain the contact change rate of the try-on model and judge whether it is less than the change threshold, if not, adjust the prosthesis model until it is less than the change threshold;It has the advantages of effectively reducing the interference of soft tissue relaxation on jaw position judgment, improving the accuracy of jaw position information extraction and improving the reliability of prosthesis design.

The invention discloses a dental restoration virtual try-on system based on three-dimensional scanning, and relates to the technical field of dental restoration. Extracting a plurality of face points and displacement track information thereof, outputting a classification result representing the types of the face points, obtaining stability scores of the face points in different preset time windows, extracting a jaw position stable interval, obtaining jaw position information, and generating a try-on model in combination with an upper jaw model, a lower jaw model and a prosthesis model; obtaining a contact change rate of the try-on model and judging whether the contact change rate is smaller than a change threshold, and if not, adjusting the restoration model until the contact change rate is smaller than the change threshold; the method has the advantages that the interference of soft tissue relaxation on jaw position judgment is effectively reduced, the accuracy of jaw position information extraction is improved, and the design reliability of the prosthesis is improved.

The present invention provides a method of generating a digital model for the construction of an oral prosthesis, wherein the method comprises using scannable fiducial markers including a bite fiducial to stack and register pre-surgical IOS data and PG data, and further stacking post-surgical PG data to accurately reflect positions of abutment fiducials and a prosthesis, thereby generating a reliable three-dimensional digital model representing precise spatial relationships of teeth, tissue, abutments, and implants.

This invention discloses a virtual fitting system for dental prostheses based on 3D scanning, belonging to the field of digital dental prosthodontics. It includes a data acquisition module, a trajectory processing module, a model construction module, a fitting simulation module, and an anomaly optimization module. Through 3D scanning and automated point cloud processing, it can quickly acquire high-precision 3D models of the maxillary and mandibular dentition, providing reliable data support for prosthodontic design. Optical motion capture fully reproduces the patient's physiological mandibular movements, overcoming the limitations of existing systems that can only perform static simulations, making occlusal detection more clinically accurate. A unified reference coordinate system is established to achieve precise model registration, controlling prosthodontic positioning errors within 0.01mm, significantly improving fit. It can automatically identify premature contacts and occlusal interferences and perform intelligent optimization of the occlusal surface, replacing repeated manual adjustments, effectively shortening the treatment cycle, improving prosthodontic accuracy and wearing comfort, and enhancing the overall treatment experience.

The present invention relates to a dental prosthesis having a structure similar to a natural tooth and a method for manufacturing the same, and discloses a dental prosthesis which is a solidified product containing ceramic particles dispersed in a polymer matrix, and a method for manufacturing the same using a 3D printing method, the dental prosthesis comprising: a first solidified product layer having a content of ceramic particles of 70 to 90 wt%, and an average particle diameter of the ceramic particles of 100 to 1000 nm; and a second solidified product layer which is adjacent to an inner side of the first solidified product layer, has a content of ceramic particles of 40 to 60 wt%, and an average particle diameter of the ceramic particles of 10 to 500 µm. Thus, the dental prosthesis exhibits a structure similar to a natural tooth, i.e., exhibits a structure and physical properties similar to a natural tooth having a surface of enamel and an interior of dentin.

The present invention provides a method of generating a digital model for the construction of an oral prosthesis, wherein the method comprises using scannable fiducial markers including a bite fiducial to stack and register pre-surgical IOS data and PG data, and further stacking post-surgical PG data to accurately reflect positions of abutment fiducials and a prosthesis, thereby generating a reliable three-dimensional digital model representing precise spatial relationships of teeth, tissue, abutments, and implants.

The invention relates to the technical field of dental restoration surface treatment, and discloses a dental restoration surface treatment device which comprises a device main body and a dust collection plate, and the device main body comprises a grinding table, a loading frame, a movable frame and a controller; and the dust collection plate grinding unit comprises multiple sets of bearing seats arranged in the dust collection plate movable frame, the interiors of the dust collection plate bearing seats are rotationally connected with rotating shafts through bearings, and grinding heads are installed at the ends, away from the bearing seats, of the rotating shafts. The floating unit drives the movable frame to float up and down in a reciprocating mode, so that the polishing head forms a composite polishing track of rotation and up-down floating, the polishing contact area is increased, and machining dead angles are effectively eliminated; and meanwhile, for polishing the outer side of the prosthesis, the rotary unit drives the workpiece to swing in a reciprocating mode with the boundaries of the polishing heads on the two sides as limiting points, it is ensured that all the areas of the outer side of the prosthesis can make full contact with the polishing heads rotating synchronously, and the problem that local polishing is excessive or insufficient is solved.

The invention belongs to the field of grinding equipment, and particularly relates to a portable dental restoration grinding device which comprises a shell, a partition plate is fixedly mounted in the shell, a power source is mounted on the left side of the partition plate, a grinding shell is arranged on the right side of the partition plate, and the bottom of the grinding shell extends to the position below the shell and is provided with a grinding head. A moving hole is formed in the inner wall of the right side of the shell, a driving plate is slidably mounted in the moving hole, one side of the driving plate is slidably mounted on the partition plate, the grinding shell is fixedly mounted at the bottom of the driving plate, a push plate is slidably mounted on the right side of the shell, and a fixing mechanism is arranged between the push plate and the shell. And an adjusting plate is slidably mounted in the grinding shell. The design is reasonable, the portability is improved through the storage design of the grinding shell, precise starting and stopping of the grinding head are achieved by means of separated transmission of the friction disc and speed reduction of the friction block, the adjusting screw rod and the detachable grinding head are used for being matched with grinding without pressure applying points, and various requirements are met.

The application provides a kind of prosthesis three-dimensional modeling system and method, the geometric topology of the boundary of the preparation body of prosthesis and the direction of the target preparation body are used to construct initial crown inner crown face, and then the main tip geometric characteristics of the occlusal surface form of the opposite tooth are determined;Dynamic occlusion data of opposite tooth and adjacent tooth form are obtained, and then the non-median slip component of mandibular movement trajectory in the dynamic occlusion data of opposite tooth and the contour curvature of adjacent area contour line in the adjacent tooth form are extracted;The functional occlusal surface of prosthesis is morphologically constrained according to the non-median slip component, the contour curvature of adjacent area contour line and the main tip geometric characteristics, and the occlusal surface three-dimensional model is obtained;The texture compensation is carried out on the occlusal surface three-dimensional model based on the material compensation coefficient of prosthesis, and the complete three-dimensional prosthesis model is output.Based on the above scheme, the fusion driven modeling of occlusion data and adjacent tooth form in prosthesis can be realized.

The application provides a polyurethane acrylate with a spirothiopyran group and a synthesis method and application thereof, and relates to the technical field of denture base materials. In the polyurethane acrylate with the spirothiopyran group, the C-S weak covalent bond of spirothiopyran is introduced into the main chain of the polyurethane acrylate, the characteristics that the C-S weak covalent bond is easy to homolytic cleavage under external force are utilized to dissipate energy, and the chain is crosslinked through a free radical-mediated click reaction, so that the mechanical strength is enhanced, and the polyurethane acrylate is suitable for fields such as denture bases, oral prostheses, biomedical implants and the like.

The application discloses a kind of digital oral prosthetic three-dimensional color prediction method, system, equipment, medium and product, it is related to digital oral medical technical field, the method includes: the three-dimensional form model of the target oral prosthetic of patient is established, and the thickness parameter of target oral prosthetic is calculated according to three-dimensional form model;Thickness parameter is input into the color-thickness function model established in advance, and the predicted value of color parameter of target oral prosthetic under corresponding thickness condition is calculated;Color parameter includes: lightness parameter, red green color axis parameter and yellow blue color axis parameter;The predicted value of color parameter is output, and the predicted value of color parameter is used for color design, adjustment or manufacturing decision-making process of target oral prosthetic.The application improves the accuracy of oral prosthetic color prediction, the controllability of digital process.

This invention discloses an auxiliary device for fitting dental prostheses, belonging to the field of medical devices. It includes a tubing and a sleeve. The tubing has an air inlet in the middle and a medication storage tank at one end. The outer wall of the medication storage tank is covered with a soft shell, and a sandwich structure is formed between the soft shell and the outer wall of the medication storage tank, creating a structure similar to an inflatable airbag. An air guiding section with several air holes is provided at the bottom of the medication storage tank and on the tubing near the bottom. A sliding plate is provided at one end of the sleeve, and the sliding plate fits with the inner wall of the medication storage tank to form a sealed cavity at the bottom of the medication storage tank. This device can be widely used in the extraoral bonding and retention of dental prostheses such as implant-supported dentures and fixed dentures, and is particularly suitable for clinical scenarios with high requirements for abutment hole cleanliness and limited operating space, improving the efficiency and quality of dental restoration.

Provided are a method and apparatus for generating a dental prosthesis, a manufacturing system, and a storage medium, which relate to the technical field of stomatology. The method for generating a dental prosthesis comprises: acquiring static data of upper and lower jaws (22) and motion trajectory data of the lower jaw (23) of a patient (S11); acquiring facial morphology data (21) of the patient (S12); according to the static data of the upper and lower jaws (22), the motion trajectory data of the lower jaw (23), and the facial morphology data (21), generating a virtual patient model (20) (S13); according to a dental prosthesis template model and the virtual patient model (20), acquiring a try-on model (S14); and displaying an image of the try-on model (S15).

The present invention provides a method of generating a digital model for constructing a dental restoration, where the method comprises superimposing and registering preoperative IOS data and PG data using scannable fiducial markers (including occlusal fiducial), and further superimposing the postoperative PG data to accurately reflect the abutment fiducial and the position of the restoration, thus, a reliable three-dimensional digital model is generated, and the model represents the precise spatial relation of the tooth, the soft tissue, the abutment and the implant.