11 results about "Root caries" patented technology

The invention relates to a decayed tooth early warning system based on image recognition in the technical field of oral examination. An image preprocessing module; the feature extraction module comprises a textural feature extraction module, a color feature extraction module and a morphological feature extraction module which are used for extracting textural features, color features and morphological features of each extracted tooth image; the decayed tooth detection module is used for identifying a decayed tooth area according to the extracted texture features, color features and morphological features through a decayed tooth detection model based on a convolutional neural network, and judging whether the type of the decayed tooth is light decayed tooth, medium decayed tooth or deep decayed tooth; the data acquisition module is used for acquiring user data; the risk assessment module is used for predicting the risk probability that the user suffers from dental caries within 1-3 months in the future through a dental caries risk model and giving a corresponding risk grade prompt; and the result generation module is used for generating oral care suggestions according to the comparison result. According to the scheme, early-stage accurate detection and risk early warning of decayed teeth are realized.

The invention relates to the technical field of oral decayed tooth detection, and discloses an oral decayed tooth detection system and detection method. Through quadric surface fitting and smoothing processing, image noise is reduced and local details are reserved. By calculating an image gradient and constructing a gradient field, the gray level change direction and amplitude are effectively extracted. The divergence calculation and the weighted aggregation degree improve the accuracy of abnormal region identification, and especially in early-stage decayed tooth detection, the abnormal region can be highlighted and the normal region can be ignored. The self-adaptive threshold setting is combined with the local mean value and the standard deviation, the threshold is dynamically adjusted, and false detection and missing detection are reduced. And 8, gathering the scattered candidate points into a complete area according to an adjacency principle and connectivity analysis, and ensuring that a decayed tooth area with an irregular shape is not missed. The method ensures that the final detection area has clinical significance through the screening of features such as physical area and boundary pixel number, and enhances the operability of the detection result through red contour labeling.

The invention discloses a decayed tooth semantic segmentation method based on structure perception, and belongs to the field of oral clinical image analysis. The invention provides a segmentation method combining anatomical structure constraint and dynamic training regulation for solving the problem of supervision bias caused by low contrast of a dental caries focus, remarkable background structure interference and a minimum target. The method comprises the following steps: firstly, constructing a continuous space proximity field taking a focus as a center, and quantifying anatomical proximity of a background and the focus; and on the basis of a multi-scale fuzzy hierarchy generation mechanism, a progressive fuzzy background of a continuous anatomical gradient is generated through fuzzy layer interval selection and pixel-level weighted fusion so as to simulate a visual attenuation rule of dental caries focus centralization and weaken high-similarity gray background noise. In the training stage, a four-stage focusing gradient weight scheduling strategy is constructed, so that the model is gradually transited from global anatomical structure learning to focus area strengthening. The method does not need to change the basic structure of an existing segmentation network, and can improve the dissection consistency and boundary stability of dental caries segmentation.

To provide a carious tooth structure-restoring agent that is convenient for treating multiple teeth at once, and can be used for preventive treatment of root caries and for early caries treatment in an aesthetic manner without discoloring the treated area.SOLUTION: A carious tooth structure-restoring agent comprises: a compound (a) having an acidic group represented by the following formula (I): R1-Xk [in formula (I), R1 represents an organic group having 40 or less carbon atoms, which may or may not have at least one (meth)acryloyloxy group; X represents an acidic group; k represents an integer of 1 or 2; when k is 2, the two acidic groups X are the same as or different from each other]; a metal ion (b); water (c); and a hydrophilic solvent (d); and is substantially free of a crosslinkable polymerizable monomer. The metal ion (b) comprises at least one metal ion selected from the group consisting of a strontium ion (b1) and an aluminum ion (b2).SELECTED DRAWING: None

Oral composition comprising glutamate, or glutamine, solvate or hydrate thereof, for use in the treatment and / or prevention of caries, wherein the composition is orally administered and increases the pH of the saliva, reducing the risk of caries development. Said oral composition increases the amount of health-associated bacteria and / or decreases the amount of disease-associated bacteria and is useful for the treatment and / or prevention of oral diseases, such as periodontal diseases, halitosis and diseases caused by Candida. Method to determine the response of a mammal to the treatment with glutamate, or with glutamine, solvate or hydrate thereof, comprising determining in saliva the amount of health-associated or disease-associated bacteria or a dysbiosis index, and identifying the mammal as responsive or non-responsive to the treatment.

This invention discloses a synergistic anti-caries oral care composition and its application. The composition comprises: (a) a single-domain antibody targeting the Streptococcus mutans surface protein PAc; (b) a plant extract complex containing kudzu root extract and phellodendron bark extract; and (c) gallic acid liposomes. This invention also provides a toothpaste containing this composition and a method for its preparation. Experiments have shown that the single-domain antibody can specifically bind to and disturb the Streptococcus mutans biofilm, increasing cell membrane permeability and synergistically promoting the entry of plant extracts into the cell to exert a bactericidal effect, achieving a clearance rate of over 98% for mature biofilms. Through formulation and process optimization, this invention solves the stability problem of antibodies in toothpaste; the product retains more than 90% of its activity after two years of storage at 25°C. The composition and product provided by this invention have the advantages of highly efficient removal of mature biofilms, synergistic effect, safety with low damage, and excellent stability, and have broad application prospects in the field of oral care.

The presented method relates to a lesion detection method utilizing intra-oral scan data of 3D geometries of a mouth. The method presented is configured to detect lesions, such as caries lesions in a discretized 3D geometry generated from the intra-oral scan data, using a trained learning model. Furthermore, the method(s) presented is configured to perform post- processing of output from the learning model to generate accurate and precise lesions detections and to display the detected lesions in the input discretized 3D geometry.

To provide an antibacterial functional food composition for the oral cavity that has antibacterial activity against bacteria related to periodontal and caries diseases, as well as resident bacteria that cause opportunistic infections, enables moderate saliva secretion or retention in the oral cavity during chewing, and is safe if ingested or swallowed.SOLUTION: It contains mastic as a functional ingredient.SELECTED DRAWING: None

To provide a carious tooth structure recovery agent that has convenience to treat multiple teeth at once, has aesthetics without discoloration of the treated area, and is capable of performing the preventive care for root surface caries and the initial caries treatment, and the carious tooth structure recovery agent contains a compound (a) having an acidic group represented by the following formula (I): R1—X (I) (in which R1 represents an organic group having 40 or less carbon atoms that has or does not have at least one (meth)acryloyloxy group, and X represents an acidic group), a zinc ion (b1), water (c), and a hydrophilic solvent (d), and substantially does not contain a crosslinkable polymerizable monomer.

The invention aims to provide a special forming set for dental caries of tooth root surfaces, and relates to the technical field of medical instruments, an extension part is integrally formed below a sleeve sheet, and the extension part can be inserted into gingiva to fit the deep root surfaces of the teeth; the upper side and the lower side of the fixing piece can be tightened through adjusting holes formed in the upper side and the lower side of the two ends of the sleeve piece respectively, so that the upper end and the lower end of the forming piece can be better attached to the side faces of the teeth; the distance between the insertion rods can be tightened by rotating the large thread sleeve and the small thread sleeve, so that the upper part and the lower part of the sleeve piece are tightened respectively, the upper part of the sleeve piece is attached to a dental crown part, and the lower part of the sleeve piece and the extension part are better attached to the deep root surface of the tooth.

The invention relates to the technical field of image analysis, in particular to a molded sheet shaping method based on image analysis, which comprises the following steps of: determining the position of a decayed tooth, acquiring a decayed tooth image group, acquiring the symmetrical tooth position and the symmetrical tooth image group of the decayed tooth, performing coincidence comparison analysis on the decayed tooth image group and the symmetrical tooth image group, and determining the morphological characteristics of the decayed tooth. According to the morphological characteristics, determining fitting characterization parameters of the molded sheet so as to determine the shaping type of the molded sheet; determining a cutting mode of the molded sheet according to the shaping type of the molded sheet and the decayed tooth inclination vector; determining the cutting angle of the molded sheet according to the defect edge form and the caries inclination vector, and determining the cutting length of the molded sheet according to the caries plane image; the cutting parameters of the formed sheet are determined through accurate image analysis, an efficient, accurate and high-adaptability shaping method is provided for the decayed tooth formed sheet, and the risk of adjacent surface gap and edge micro leakage is effectively reduced.