274 results about "Tooth plaque" patented technology

A medical stent includes an expandable structure that is moveable between a collapsed configuration for delivery and an expanded configuration for deployment, the expandable structure in the expanded configuration defining a relaxed diameter. The expandable structure retains its relaxed diameter along portions of the expandable structure that are not constrained by contact with vessel walls after deployment. Portions of the expandable structure that are compressed by contact with vessel walls after deployment are caused to move to a reduced diameter less than the relaxed diameter along portions. The compressed portions of the expandable structure may help prevent plaque from breaking loose. Uncompressed portions of the expandable structure may allow blood flow therethrough.

The invention discloses a dental plaque quantitative analysis method, a dental plaque quantitative analysis device and computer equipment. The method comprises the following steps: acquiring an initial dental surface image of at least one specified orientation of a to-be-detected tooth; normalizing each initial dental surface image into the matched template image to obtain a normalized dental surface image; performing image segmentation on each regular tooth surface image to obtain a tooth image area and a dental plaque image area in the regular tooth surface image; and calculating the dental plaque proportion of the to-be-detected teeth according to the sizes of the tooth image region and the dental plaque image region of each regular tooth surface image. Accurate quantitative evaluation of the dental plaque on the to-be-detected teeth is achieved, the method has the advantages of being easy and convenient to operate, accurate in result and the like, and the quantitative evaluation result has comparability and can serve as a credible basis for dynamic monitoring of oral health.

The invention discloses an oral care desensitization paste and a preparation method thereof, and mainly relates to the technical field of dental medicines. The oral care desensitization cream is prepared from the following components: bioactive glass, strontium chloride, sodium chloride, silicon dioxide, sodium carboxymethyl cellulose, polyethylene glycol 400, a xanthan gum solution, sodium lauryl sulfate, sodium lauroyl sarcosinate, titanium dioxide, beta-glucan, saccharin sodium salt, sorbitol, methylparaben, propyl hydroxybenzoate, edible essence and water. Compared with the prior art, the oral care desensitization paste disclosed by the invention can be used for sealing dentinal tubules and treating hemodia; the traditional Chinese medicine composition can also be used for treating plaque gingivitis, relieving and reducing gingival bleeding and inhibiting and reducing dental plaque; and meanwhile, the condition of mistakenly swallowing and eating in the using process is reduced.

This dental plaque detection device comprises: an acquisition unit (101) for acquiring a first RGB image from reflected light and fluorescence from teeth, dental plaque, and tartar in an oral cavity irradiated with irradiation light of a predetermined wavelength; and a detection unit (102) for generating a second RGB image by performing image processing including first image processing on the first RGB image, and detecting the amount contained, per unit area, of a fluorescent substance contained in tartar and dental plaque attached to the teeth, on the basis of the second RGB image. The first image processing is processing for: extracting a natural tooth region to which dental plaque and tartar are not attached from the first RGB image; and adjusting the gain of at least two color components from among the red, green, and blue components of the first RGB image such that a first red pixel average value of a plurality of red pixel values of a plurality of first pixels constituting the natural tooth region, a first green pixel average value of a plurality of green pixel values of the plurality of first pixels, and a first blue pixel average value of a plurality of blue pixel values of the plurality of first pixels are made equal to each other.

The invention discloses an oral care composition and a preparation method thereof, the oral care composition comprises a friction agent, a periodontal repair agent, a thickening agent, a humectant and a foaming agent, the friction agent comprises a dental plaque release agent, and the dental plaque release agent is configured to destroy a bacterial extracellular polysaccharide matrix in dental plaque; the periodontal repair agent comprises at least one of the following components: an inflammation inhibitor, a tissue repair promoter, a mucous membrane stimulation alleviator and a bacteriostatic agent. The oral care composition contains the dental plaque release agent and the periodontal repair agent, and can synergistically improve periodontal health.