48 results about "Tooth color" patented technology

The invention relates to the technical field of color correction, in particular to a baked porcelain false tooth color adjusting method and system based on image analysis, and the method comprises the following steps: identifying teeth, gingiva and surrounding tissues in an image, determining a region boundary by using an edge detection technology, and calibrating a region according to gray difference. According to the method, teeth and surrounding tissues are accurately segmented by using an edge detection technology, accurate identification of a tooth area in an image is realized, a clear starting point is provided for color adjustment, a wave band with high reflectivity is selected, the quality of image data is optimized, the precision of subsequent color analysis is ensured, and hue, brightness and saturation are adjusted in a CIELAB color space; the matching degree of denture colors and natural teeth is improved, the visual coherence is enhanced, neural network analysis and time sequence data are integrated to predict long-term color changes, a real-time feedback mechanism automatically adjusts color parameters according to illumination conditions, the visual effect is continuously optimized, and the naturalness and consistency of colors in different environments are guaranteed.

The invention relates to a point cloud boundary segmentation method and system for a tooth color three-dimensional digital model, and the method comprises the steps: carrying out the gamma correction of a tooth HSV color model, and obtaining a point cloud with the local contrast enhancement of a V channel of an original point cloud HSV color model, and a seed point as a boundary line; obtaining and calculating the similarity between each field point and the seed point according to the feature information of field points in a certain field range of the seed point, and taking the points of which the similarity is greater than a preset similarity threshold as boundary points of the boundary line; after performing quality evaluation on the boundary points of the boundary line, dynamically adjusting the weight of gamma correction until the boundary points of the boundary line under the optimal quality evaluation are obtained; and obtaining a closed boundary line according to the finally obtained boundary line points. The method fully reduces noise interference by fusing multiple features such as color, normal and curvature, effectively improves the accuracy and stability of boundary segmentation in combination with dynamic weight, reduces the cost of manual parameter adjustment, and is suitable for point cloud data under different illumination and geometric conditions.

The invention discloses application of fermented lactobacillus mucus in preparation of a product for improving tooth color and gingivitis, and relates to the technical field of microorganisms. The lactobacillus fermentum NHNK-623 disclosed by the invention is preserved in the China Center for Type Culture Collection on November 18, 2024, and the preservation number of the lactobacillus fermentum NHNK-623 is CCTCC (China Center for Type Culture Collection) NO: M 20242574. The NHNK-623 has the effects of inhibiting proliferation and biofilm formation of pigment-generating pathogenic bacteria, agglutinating the pigment-generating pathogenic bacteria, inhibiting melanin generation of the pigment-generating pathogenic bacteria, inhibiting hyaluronidase activity of the pathogenic bacteria, promoting growth of gingival fibroblasts, inhibiting gingival cell inflammation and apoptosis induced by the pigment-generating pathogenic bacteria, and inhibiting melanin generation of the pigment-generating pathogenic bacteria. And the product can be used for preparing products for improving tooth color and gingivitis.

1. The name of the product of this design: Dental Colorimeter. 2. Purpose of this product design: suitable for dentists to measure tooth color. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: reference diagram of the combined state.

The invention relates to the field of dental restoration, in particular to a tooth colorimetric method, system and device, and the tooth colorimetric method comprises the following steps: step 1, determining a plurality of predetermined materials, and presetting an adjustment value delta L corresponding to each predetermined material; step 2, obtaining reflection spectrum data S1 (lambda) of the surface to be measured, and obtaining an initial lightness value L1 according to the reflection spectrum data S1 (lambda); step 3, preprocessing the reflection spectrum data S1 (lambda); step 4, comparing the preprocessed reflection spectrum data S1 (lambda) with standard spectrum data S2 (lambda) corresponding to each predetermined material, and outputting a comparison result; 5, determining the material type of the surface to be detected according to the comparison result; and step 6, determining a corresponding adjustment value delta L according to the determined material type of the surface to be measured, and calibrating the initial lightness value L1 through the adjustment value delta L to obtain an actual lightness value L2. According to the invention, the aesthetic property of tooth restoration and patient satisfaction are guaranteed.

Provided in the present disclosure is an oral cavity examination method, including: acquiring an oral cavity image; performing median filtering and region segmentation operations on the image to obtain a first intermediate image; converting the first intermediate image from an RGB color space to an HSV color space to obtain a second intermediate image; determining a comparison threshold based on a tooth color; and determining a ratio of pixels within the comparison threshold to pixels of the second intermediate image based on the second intermediate image and the comparison threshold. The oral cavity examination method can set different comparison thresholds according to tooth colors of subjects, so as to perform targeted examination conforming to the characteristics of different subjects, making the ratio of the pixels within the comparison threshold to the pixels of the second intermediate image determined based on the second intermediate image and the comparison threshold more accurate and effective than the ratio determined by the conventional method, and thus facilitating subsequent evaluation of oral cavity health condition.

The present invention relates to a denture coloring method for regulating multi-scale gradient surface microstructures, comprising the following steps: S1: printing microstructures with multi-scale gradients on the surface of a diaphragm through a 3D printer; S2: comparing the color of the patient's teeth with the color of the denture to be stained printed by the 3D printer to obtain a color difference and preparing a staining solution of the corresponding color; S3: placing the diaphragm with the surface microstructure in the staining solution for coloring; S4: adhering the diaphragm to the denture to be stained so that the dye in the staining solution adheres to the surface of the denture, and removing the diaphragm from the surface of the denture after staining is completed; S5: glazing and sintering the denture to obtain a finished denture. The present invention also relates to a denture. The present invention has simple color matching, can achieve color regulation and gradient coloring of the entire surface position of the denture, and belongs to the technical field of denture processing.

The invention relates to the technical field of marine microorganisms, in particular to application of lactobacillus salivarius NHNK-603 in preparation of products for improving tooth color and gingivitis. The strain provided by the invention is preserved in the China Center for Type Culture Collection, and the preservation number is CCTCC NO: M 2024416. Experiments show; the NHNK-603 has the effects of inhibiting proliferation and biofilm formation of pigment-generating pathogenic bacteria, agglutinating the pigment-generating pathogenic bacteria, inhibiting melanin generation of the pigment-generating pathogenic bacteria, inhibiting hyaluronidase activity of the pathogenic bacteria, promoting growth of gingival fibroblasts, inhibiting gingival cell inflammation and apoptosis induced by the pigment-generating pathogenic bacteria, and inhibiting melanin generation of the pigment-generating pathogenic bacteria. And the product can be used for preparing products for improving tooth color and gingivitis.

This utility model discloses a fixed denture coloring and molding tool, including a base plate, a fixing frame welded to the top of the base plate, a second clamping ring welded to the other end of the fixing frame, a second side plate welded to the surface of the second clamping ring, an internally threaded hole in the second side plate, a lead screw installed inside the internally threaded hole, and a bearing welded to one end of the lead screw. This fixed denture coloring and molding tool, by welding a fixing frame to the top of the base plate and a second clamping ring to the other end of the fixing frame, and simultaneously welding a second side plate to the surface of the second clamping ring, and setting a first clamping ring outside the first clamping ring, welding a first side plate to the surface of the first clamping ring, and welding a bearing inside the first side plate, ensures that the first clamping ring will not change angle. Then, the denture is placed between the first and second clamping rings, and the lead screw is rotated to drive the first clamping ring until the denture is clamped and fixed. At this point, when coloring the denture, it can maintain a stable state without shaking, resulting in strong stability during use.

The brace is characterized by the fact that, through the application of a heat-shrink tube colored in the exact tooth shade, it now blends virtually invisibly into its surroundings. Mechanical abrasion is eliminated.

1. The name of the design product: auxiliary part and holding part of tooth color selection palette. 2. The use of the design product: the design product as a whole is used as a tooth color selection palette, the claimed part is used as an auxiliary part for imitating gums in the tooth color selection palette, and the holding part for holding the auxiliary part and the color sample with a stick is used. 3. The design points of the design product: the shape of the part other than green. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. Design 1 is designated as the basic design. 6. Other circumstances that need to be explained: the part of the design product is claimed, and the part not claimed is represented in green in the design picture.

This invention relates to the field of medical image processing technology, and proposes an intelligent method for color calibration of dental photographs and an automatic color selection system for prostheses. The method includes: receiving an oral image containing a shade guide and teeth; identifying the shade guide and target teeth in the oral image; obtaining the distorted color value of the shade guide; constructing a color difference conversion model based on the distorted color value and pre-stored standard color values ​​of the shade guide; and performing color correction on the target teeth in the oral image based on the color difference conversion model to obtain a corrected image. This invention solves the problem of tooth color distortion in oral images.

1. Name of the designed product: main body of a tooth color image taking device. 2. Use of the designed product: the designed product is a hand-held tooth color image taking device for taking images of teeth. 3. Design points of the designed product: the shape of the solid line part. 4. Picture or photo best indicating the design points: perspective view 1. 5. Other circumstances or information to be explained: the designed product is a partial design, the solid line part in the drawing is the part to be protected, and the dotted line part in the drawing is the part not to be protected.

This invention relates to the field of medical image processing technology, and more particularly to a method and system for selecting dental restoration materials based on adjacent tooth color extraction. The method includes: acquiring the color information of the abutment tooth to be restored; acquiring the adjacent teeth of the abutment tooth to be restored; determining a target restoration color based on the adjacent teeth; traversing combinations of restoration materials and thicknesses in a material database; calculating the restoration material color corresponding to any combination; overlaying any abutment tooth to be restored with the restoration material using a mask; calculating a predicted restoration color based on the color information of the abutment tooth, the color of the restoration material, and the thickness using a transparency calculation model; calculating the color difference between the predicted restoration color and the target restoration color; and selecting the restoration material and thickness based on a preset color difference threshold and preset multi-objective optimization conditions. Compared to existing technologies, this invention achieves the superposition prediction of restoration color on the abutment tooth, thereby enabling the selection of the restoration.

The invention relates to a dental fluorosis screening colorimetric plate structure capable of preventing visual inertia, which comprises a shell, an observation port is formed in the upper end surface of the shell, and a plate turning mechanism is arranged at one end of the observation port; one side surface of the shell is fixedly connected with a grip; a rotating ring is rotatably connected to the lower end of the interior of the shell, a dismounting seat is slidably connected to the interior of the rotating ring, and a rotating handle is fixedly connected to the lower end face of the dismounting seat; a plurality of mounting grooves are formed in the upper end face of the dismounting base, magnets are fixedly connected to the interiors of the mounting grooves, iron blocks are connected to the upper ends of the magnets in an attraction mode, and tooth color codes are fixedly connected to the upper ends of the iron blocks. By means of the dental fluorosis screening device, a user can conveniently conduct dental fluorosis screening operation by himself / herself, one independent tooth color code can be exposed for independent color matching comparison through one-time operation, and the situation that visual inertia contrast color difference occurs due to the fact that a large number of tooth color codes are observed at a time is effectively eradicated.

The invention discloses an oral cavity tooth examination method and device, and the method comprises the steps: carrying out the preprocessing of a CBCT image of oral cavity teeth; carrying out coarse segmentation on the CBCT image; determining a target segmentation point of the CBCT image after coarse segmentation, and performing fine segmentation processing on the CBCT image after coarse segmentation based on the target segmentation point to obtain a tooth segmentation image; performing color feature extraction processing on the tooth segmentation image based on an octree to obtain tooth color features; calculating the inclination degree of each tooth in the tooth segmentation image, and carrying out tooth crack detection on the tooth segmentation image based on Hough space to obtain a tooth crack detection result; and performing tooth abnormality examination based on the tooth color features, the inclination degree of each tooth and the tooth crack detection result. According to the invention, the obtained tooth abnormality examination result is more comprehensive and accurate, so that the tooth abnormality examination can achieve a more ideal effect.

The invention relates to the technical field of printing, provides a device and a method capable of simultaneously printing dental restorations with multiple tooth colors, and aims to solve the problem that the manufacturing cost and the manufacturing efficiency of the dental restorations cannot be balanced when the existing 3D printing technology is used for printing the dental restorations with different tooth colors. The device comprises a printing platform which is provided with a plurality of printing areas; and material grooves matched with the printing areas are formed in the material groove base, and the material grooves are used for containing printing materials of different color numbers.

The utility model relates to the field of dentistry, and discloses a half-mouth Mardragon bridge connecting structure which comprises a bridge frame and a dental crown, a positioning groove is machined in the side, close to a tongue, of the bridge frame, an overflow discharging hole coaxial with the positioning groove is machined in the side, close to the tongue, of the dental crown, a pin extending into the positioning groove is installed in the overflow discharging hole, and the pin extends into the positioning groove. And resin is processed on the bridge frame. According to the utility model, the bonding of the existing dental crown and the bridge frame is avoided, the pin is adopted for connection, the operation is simpler, and the later maintenance is convenient; the positioning groove and the overflow discharging hole are formed in the side close to the tongue, so that leakage is avoided, and the leakage repairing process of leakage of an existing positioning groove is omitted; resin is processed on the bridge frame, so that the phenomenon that the appearance of the bridge frame is affected due to tooth color difference caused by color leakage of a dental crown is effectively avoided.

The invention relates to the technical field of biology, in particular to lactobacillus paracasei and application of the lactobacillus paracasei to improvement of tooth color and gingivitis. The strain provided by the invention is preserved in the China Center for Type Culture Collection, and the preservation number is CCTCC NO: M 20251304. Experiments show; the NHNK-632 has the effects of inhibiting proliferation and biofilm formation of pigment-generating pathogenic bacteria, agglutinating the pigment-generating pathogenic bacteria, inhibiting melanin generation of the pigment-generating pathogenic bacteria, inhibiting hyaluronidase activity of the pathogenic bacteria, promoting growth of gingival fibroblasts, inhibiting gingival cell inflammation and apoptosis induced by the pigment-generating pathogenic bacteria, and inhibiting melanin generation of the pigment-generating pathogenic bacteria. And the product can be used for preparing products for improving tooth color and gingivitis.

The invention provides a tooth color recognition method and system based on a deep learning algorithm, a terminal, a medium and a recognition instrument. The method comprises the following steps: collecting tooth images of different angles and different color numbers under natural light illumination; dividing the tooth image into a plurality of tooth areas and extracting colors of middle parts of the tooth areas to make a data set; and inputting the data set into a deep residual network for training to obtain a tooth color recognition model of which the input parameter is the original tooth image and the output parameter is the tooth image marked with the corresponding color number in each tooth area. The method comprises the following steps: making an image data set and training an AI model for identifying tooth colors based on a deep learning algorithm; the trained AI model is embedded into the identification instrument, photographing and tooth colorimetric functions are realized through a button, a color number image after colorimetric can be displayed on a rear-end screen, help is provided for manufacturing a dental restoration, and the product is convenient to use and reliable in efficiency.

The invention discloses a fluorinated denture resin material for preventing dental caries and a preparation method thereof, and relates to the technical field of denture materials. The fluorinated denture resin material for preventing dental caries is prepared from the following raw material components in parts by weight: 59.5 to 76.5 parts of modified polymethyl methacrylate; 8 to 10 parts of self-repairing microcapsules; 3.5 to 4.5 parts of a GA (at) HBN antibacterial composite material; 2, 2.4 to 3.6 parts of nano ZrO2; 1-1.2 parts of a stabilizer; 0.16 to 0.24 part of a dispersing agent; 0.25 to 0.35 part of a compatilizer; 0.7 to 0.9 part of an initiator; the fluorinated denture resin material for preventing dental caries, prepared by the invention, has the advantages of self-repairing capability of resisting microcracks, wear resistance, capability of preventing decayed teeth of surrounding natural teeth in an oral environment, antibacterial property, dyeing resistance, tooth color close to that of the natural teeth and the like.

The invention relates to the technical field of dental restoration, in particular to a gradient color dental restoration three-dimensional printing method and system. The method comprises the following steps: dividing a restoration model of a target tooth to be restored into a plurality of tooth restoration layers, determining a target color of each tooth restoration layer by taking tooth color change data of a healthy adjacent tooth as a reference, and then sorting the target colors of all the tooth restoration layers according to a rule from light to deep as a printing sequence; and finally, by taking the target color as a printing target, based on a preset color matching and feeding strategy and an exposure control strategy, sequentially performing three-dimensional printing on each tooth restoration layer of the restoration model according to the printing sequence to obtain the gradient-color tooth restoration of the target tooth. Therefore, the gradient-color dental restoration with small color difference with healthy adjacent teeth is obtained, and the restoration effect is good.

The invention discloses a tooth colorimetric spectral imaging method and system based on deep learning, and the method comprises the steps: collecting RGB images and spectral images of teeth and ceramic chip samples with different thicknesses under a multi-light-source condition, and carrying out the preprocessing; constructing a training set and a test set based on the RGB image and the spectral image obtained through preprocessing; a spectrum reconstruction network model based on a U-Net framework is constructed, the main body of the spectrum reconstruction network model comprises a plurality of attention modules connected in series, each attention module comprises a channel self-attention mechanism and a space attention mechanism, the input of the spectrum reconstruction network model is a linear RGB image, and the output of the spectrum reconstruction network model is a reconstructed spectrum image; and training and testing a spectrum reconstruction network model by using the training set and the test set, and performing real-time tooth spectrum image reconstruction by using the trained spectrum reconstruction network model. According to the method, the real reflection spectrum of the teeth can be more accurately recovered, and the colorimetric precision is remarkably improved.

A system includes an intraoral scanner and a computing device operatively connected to the intraoral scanner. The intraoral scanner generates three-dimensional scan data of a tooth and further generates color data of the tooth under multi-chromatic light. The computing device receives the three-dimensional scan data and the color data of the tooth during a first mode of operation. The computing device invokes a second mode of operation, and presents, in a graphical user interface (GUI), an image of the tooth. The computing device further presents, in the GUI, data indicating a plurality of color zones of the tooth and further indicating, for at least one color zone of the plurality of color zones, that insufficient color data has been received, wherein each color zone indicates a separate region of the tooth that is expected to have approximately uniform color.

The invention relates to the technical field of dental restoration, and discloses a chair-side digital dental restoration material color aesthetic optimization method and system, and the method comprises the steps: building a color information fitting curve of different chair-side digital dental restoration materials along with the thickness change under different restoration backgrounds; according to the color information of the target tooth, judging that the target tooth of the person to be repaired can adopt a color information fitting curve to carry out color aesthetic optimization on the target tooth through the color difference expression; and matching the intra-tooth color information with the color information fitting curve to obtain chair-side digital dental restoration material information with the minimum color difference with the intra-tooth color information. According to the method and the device, the type and color number information of the chair-side digital dental restoration material with the minimum color difference with the target tooth can be obtained in a targeted, efficient and accurate manner, so that a physician can be assisted to make a restoration body consistent with the color of the target tooth for the person to be restored, and the target tooth restored by the person to be restored has the optimal color aesthetic effect.

The application belongs to the technical field of denture materials, and particularly relates to a special neutral water-based dyeing solution for full-porcelain dentures, a preparation method and application thereof. The dyeing solution is formed by scientifically compounding a coloring part, a surface modification part and a pH adjusting part, and is a stable, neutral and non-corrosive water-based solution. The technical scheme effectively solves the hidden safety hazards existing in the transportation, storage and use of traditional acid dyeing solution, and effectively reduces the potential influence of the acid dyeing solution on the surface structure and mechanical properties of the full-porcelain denture zirconia restoration. After the full-porcelain denture zirconia restoration is treated by the neutral water-based dyeing solution, excellent coloring effect and high tooth color simulation can be achieved through subsequent sintering, and the color simulation degree and clinical application value of the full-porcelain denture product are significantly improved.

The invention proposes a method for determining a tooth color, wherein an analysis evaluation device has an iterative learning algorithm using a CNN, which, in a preliminary step, acquires images at different illuminations and shooting angles on the basis of at least one previously known, if necessary virtually generated, sample tooth color and analyzes and evaluates the images and learns a correspondence with the correct sample tooth color. In the analysis evaluation step, a shooting device is provided, with which an image of a support having a previously known, if necessary virtually generated, sample tooth color together with at least one tooth is shot. The shooting device acquires at least two images of the combination of the tooth to be determined and the support from different shooting angles and transfers the images to the analysis evaluation device. The analysis evaluation device analyzes the acquired images on the basis of the learned correspondence with the correct sample tooth color and outputs the tooth color of the tooth to be determined from a reference value, such as a commonly used tooth color chart, for example A1, B2, etc.

Graphical user interface for editing and viewing an oral health report, allowing input and viewing of patient information, oral health descriptions, oral scanning images, oral models, and selection of tooth shades; reproductions 1.4-1.6, 2.3-2.4, 3.2, 4.3-4.4, 5.5-5.10, 6.7-6.12 are for reference purposes and form no part of the claimed design; the gray rectangular color blocks with diagonal crosses in reproductions 1.1-1.3, 2.1-2.2, 3.1, 4.1-4.2, 5.1-5.4, 6.1-6.6 represent pushed contents and form no part of the claimed design; the “X” in the reproductions represents variable numbers and / or characters and / or symbols; the appearance of the image sequentially transitions between the images shown in reproductions 1.1-1.3, in reproductions 2.1-2.2, in reproductions 4.1-4.2, in reproductions 5.1-5.4, in reproductions 6.1-6.6; the process or period in which an image transitions to another image forms no part of the claimed design; in reproductions 7.1-7.2, the teeth shown with tooth shades, the tooth shades assigned to the teeth, and the color palette and shade numbers displayed in the lower portion of the interface are only for illustration purposes; in Design 1, by clicking the plus button adjacent to "new problem" at the bottom of the interface shown in reproduction 1.2, the interface transitions from reproduction 1.2 to reproduction 1.3 for adding new problems of the patient to the report.

The invention relates to a tooth colorimetric intelligent detection method based on shade guide twinborn deep learning, and belongs to the field of tooth colorimetric intelligent detection. The method comprises the following steps: acquiring an image of a standard color tooth and a natural tooth image in a shade guide, classifying according to the category of the tooth color, and constructing a sample data set; meanwhile, the tooth region segmentation image is marked, and a tooth segmentation data set is constructed; based on the sample data set, constructing and training a Siamese-MaxViT twin network model to obtain a tooth color difference model; based on the tooth segmentation data set, constructing and training a YOLOv11 segmentation model to obtain a tooth region segmentation model; and based on the tooth region segmentation model and the tooth color difference model, performing tooth segmentation and colorimetric detection on the to-be-detected tooth image. The method can be widely applied to medical scenes such as dental image segmentation preprocessing and intelligent tooth colorimetry, and has the advantages of high detection precision, high adaptability, high visualization degree and the like.

The application is suitable for the technical field of computers, and provides a tooth color identification method based on image processing, comprising: performing segmentation processing on an oral cavity image, and obtaining a single tooth image according to a result of the segmentation processing and the oral cavity image; obtaining a saturation of each pixel point in the single tooth image; determining a target color corresponding to the single tooth image according to the saturation of each pixel point in the single tooth image; and determining a target color number corresponding to the target color, wherein the target color number is a tooth color corresponding to the single tooth image. By taking the saturation of an image color as a parameter for identifying a tooth color to be identified, the application can improve the accuracy of a tooth color identification result, and avoid the problem of low accuracy of tooth color identification caused by the influence of external interference factors such as picture reflection on a tooth image.