13 results about "Dental enamel" patented technology

The invention discloses an anti-caries early warning method and system based on oral health detection, and belongs to the technical field of data processing. The method comprises the following steps: acquiring and processing target detection data to generate a clear enamel demineralization feature image and a buffer capability score; analyzing pixel-level fluorescence intensity distribution by adopting a convolutional neural network model, determining a quantized value of the enamel demineralization degree, and further determining a comprehensive dental caries risk level category; judging a risk change trend according to the historical target detection data sequence to obtain a dynamic evaluation update value; a data fusion algorithm is adopted to obtain a final decayed tooth risk assessment index, and risk early warning information is generated according to the early warning template; by integrating fluorescence imaging, an image enhancement algorithm, a convolutional neural network, spectral analysis, k-means clustering and time sequence analysis, a complete process from enamel demineralization feature extraction to comprehensive risk assessment is constructed, the accuracy and individuation level of decayed tooth risk assessment are remarkably improved, and a scientific basis is provided for early prevention and intervention.

This invention discloses a method, apparatus, medium, and device for evaluating the acid-resistant repair effect of tooth enamel, relating to the field of dental prosthetics. The method includes: constructing an energy accumulation distribution model and a heat conduction model in tooth tissue under erbium laser irradiation; obtaining a calculation model for the carbonate loss distribution of tooth enamel based on the decomposition reaction of carbonated hydroxyapatite in tooth enamel at high temperatures; constructing a photo-thermal-chemical coupled two-dimensional analysis model of tooth enamel under erbium laser irradiation based on the above model; performing simulation calculations on the photo-thermal-chemical coupled two-dimensional analysis model to determine the two-dimensional temperature distribution and carbonated hydroxyapatite loss distribution inside the tooth enamel under different erbium laser intensities and frequencies, thereby determining the acid-resistant repair effect of tooth enamel. This method fills the gap in the prior art lacking quantitative evaluation methods and solves the problem of difficulty in scheme design due to the inability to accurately correlate laser parameters with the acid-resistant repair effect.

A dental anhydrous varnish composition including at least one calcium silicate compound, preferably in an amount ranging from 0.1% to lower than 20% by weight relative to the total weight of the composition, at least one film-forming agent, and at least one volatile organic solvent. Also, composition's use in the treatment and / or the prevention of hypomineralization related pathologies. Further, a dental product and to a dental adhesive film.

The utility model provides a novel adjacent surface glaze removing tool which comprises a first retention frame and a second retention frame, a connecting strip is fixed to the top of the first retention frame, a connecting groove is formed in the top of the second retention frame, and the connecting strip can be inserted into the connecting groove in a sliding mode to enable the first retention frame and the second retention frame to form an arch-shaped retention frame. The inner side of the second retention frame is connected with a stud, the stud is in threaded connection with a rotary knob, the rotary knob can rotate on the stud to abut against the first retention frame, a first clamping groove is formed in the bottom of the first retention frame, a second clamping groove is formed in the bottom of the second retention frame, and sand strips are clamped in the two clamping grooves. A frame body of the first retention frame is hinged to a first clamping sleeve used for clamping one end of a sanding strip located at the bottom of the first retention frame, a frame body of the second retention frame is hinged to a second clamping sleeve used for clamping the other end of a sanding strip located at the bottom of the second retention frame, and a supporting rod is arranged on the side face of the top of the second retention frame. According to the invention, the adjacent enamel grinding operation can be carried out through the support rod extending out of the oral cavity.

The present application discloses a mineralization material for treating dentin hypersensitivity and promoting epitaxial growth of enamel, and its use, which comprises, by weight, 5-72 parts of a membrane-forming protein or PEGylated membrane-forming protein, 4-67 parts of a water-soluble disulfide exchanger, and 1-21 parts of a pH adjuster. The present application first proposes using a non-toxic disulfide exchanger (e.g., cysteine ​​(Cys)) to react with a membrane-forming protein or PEGylated membrane-forming protein, so that when a protein nano-coating layer with a mineralization-regulating function is formed, a large amount of high molecular weight protein aggregates that block dentin pores are not generated, the permeability is better, and the protein nano-coating layer can penetrate deeper into the already exposed dentin pores, reaching a depth of 200-500 μm (the blocking depth of the protein coating layer reacting with TCEP is only about 40 μm), and can reach the recesses of pits and fissures.

Described herein are dental treatment compositions, more particularly, a dental varnish composition useful in effective fluoridation, enhancement of remineralization the tooth enamel, and hypersensitivity through occlusion of dentine tubule. The dental varnish composition includes a hydrogel system and at least one fluoride source, wherein the dental varnish is water soluble. The hydrogel system includes at least one polyphenol having at least one phenol group, at least one polymer, and a metal ion. Described herein are also methods of making dental varnish composition in a single step and one pot synthesis.

The utility model relates to the technical field of toothbrushes, in particular to an electric toothbrush with a magnetic suspension type vibration sweeping structure, which comprises a hollow main machine shell, a bottom cover and a brush head are respectively arranged at two ends of the main machine shell, and a support is arranged in the main machine shell. The bracket is provided with an E-shaped iron core which is formed by punching a plurality of silicon steel sheets into an E shape and stacking the silicon steel sheets, and wire turns are arranged in the E-shaped iron core. Compared with traditional mechanical rotation, rotation of the brush head is smoother, the bipolar strong magnet continuously rotates in a reciprocating mode in a magnetic suspension mode, bristles of the brush head continuously rotate in a reciprocating mode to conduct sweeping vibration, the mode caters to the growth direction of enamel, and therefore friction to teeth is reduced.

The present invention relates to a high-strength cold-rolled enamel steel sheet and a method of manufacturing same, the enamel steel sheet comprising, in weight %, C:0.01-0.1%, Mn:0.05-0.4%, Si:0.001-0.03%, Al:0.03-0.12%, P:0.02-0.04%, S:0.001-0.02%, Cu: 0.03-0.08%, Mo:0.13-0.30%, N: 0.004% or less, 0:0.003% or less, and the balance being Fe and inevitable impurities, wherein the high-strength cold-rolled enamel steel sheet has an oxide layer with a thickness of 0.006-0.030 μm formed in an inward direction from the surface thereof and satisfies formulas (1) and (2), and thus has no bubble defects and excellent fish scale resistance and enamel adhesion after enamel treatment.

The present application relates to a kind of light-cured printing biomimetic gradient zirconia ceramic / resin composite material and its preparation method.It is with zirconia ceramic / photoinitiator resin composite slurry as standard, by 3D printing preparation is obtained;Zirconia ceramic / photoinitiator resin composite slurry includes according to weight parts, yttrium stabilized zirconia 45~55 parts, 1,6-hexanediol diacrylate 15~20 parts, pentaerythritol tetraacrylate containing stabilizer MEHQ 5~10 parts, ethanol 3~5 parts, dispersing agent 2~3 parts, initiator 0.1~0.5 parts;Biomimetic crown model is spider web hexagon-squid bone S-shaped composite structure.The present application combines the biomimetic crown model of spider web hexagon-squid bone S-shaped composite structure, zirconia ceramic / photoinitiator resin composite slurry and the product prepared by 3D printing has the composite mechanical properties of dentin / enamel, keeps lower elastic modulus, improves the toughness of light-cured printing biomimetic gradient zirconia ceramic / resin composite material.

The invention discloses a deep learning-based method for analyzing the demineralization thickness of enamel in a fluorescence image, which comprises the following steps: by taking a QLF fluorescence image as an input, establishing calibration of a fluorescence signal and a real thickness in combination with TMR, and deriving a continuous and graded label; on one hand, whether a single image exceeds a 100 [mu] m threshold value or not is judged, on the other hand, non-uniform demineralization is simulated based on 3 * 3 splicing, classification recognition is carried out, and the method outputs a threshold conclusion, interval distribution and equal-structured results. Experiments show that the binary classification accuracy rate is about 96.5%, and the very-class overall accuracy rate is about 97%. The method is suitable for early screening and risk assessment of caries, and has interpretable, integratable and clinical popularization values.

A method for the three-dimensional decoration of a substrate (11) to produce an external part (10), which method includes the steps of: depositing an enamel base layer (12) on an external surface (110) of a ceramic substrate (11); firing the substrate (11) covered with the base layer (12); etching the base layer (12) in a predefined decorative pattern to generate one or more blind cavities; depositing a decorative layer (13) of ceramic material and / or metallic material on the base layer (12) and the cavities (120) so as to fill said cavities (120) in order to form decorative elements (130); surfacing the decorative layer (13) to remove said layer deposited on the base layer (12); and tribofinishing the substrate (11), the base layer (12) and the decorative layer (13) to remove the base layer (12).

The application provides a hydroxyapatite nanowire coated with a metal ion-rich amorphous layer and a preparation method thereof, and belongs to the technical field of nanometer material preparation, comprising a hydroxyapatite nanowire and a metal ion-rich amorphous layer coated on the surface of the hydroxyapatite nanowire, wherein the length-diameter ratio of the hydroxyapatite nanowire is 500-10000, and the ratio of the diameter of the hydroxyapatite nanowire to the thickness of the metal ion-rich amorphous layer is (5-50):1. The application learns the unique structure of natural tooth enamel, coats a layer of amorphous layer containing iron, aluminum, copper, manganese or zinc metal ions on the outer layer of the hydroxyapatite nanowire, so as to simulate the multi-level structure of the hydroxyapatite nanowire in the natural tooth enamel, and make the hydroxyapatite nanowire have some excellent performances endowed by the metal ions, such as good thermal stability, corrosion resistance and wear resistance.