13 results about "Extracted tooth" patented technology

The invention relates to the technical field of oral cavities, and discloses an alveolar bone resorption degree detection method, device and equipment and a medium, oral cavity image data of a patient is obtained, and tooth jaw segmentation data extraction is performed on the oral cavity image data to obtain tooth jaw segmentation data; performing three-dimensional space morphological feature analysis on tooth segmentation data in the tooth jaw segmentation data to obtain tooth coordinate azimuth information; calculating periodontal measurement surface information according to the tooth coordinate azimuth information; extracting enamel boundary line data and alveolar bone boundary line data in the dental jaw segmentation data; calculating an alveolar bone resorption degree result according to the enamel boundary line data, the alveolar bone boundary line data and the periodontal measurement surface information; the alveolar bone resorption degree result is calculated through the boundary line data and the measurement surface information, and the accuracy of the result is improved while the resorption degree is accurately quantified.

A pulp extraction device for obtaining clean dental pulp stem cells and a control method thereof. The present invention belongs to the technical field of stem cell microtissue extraction, and specifically relates to a pulp extraction device for obtaining clean dental pulp stem cells and a control method thereof. The present invention aims to automatically and accurately cut and extract tooth roots without human and other factors under the premise of ensuring cleanliness. It comprises a pulp extraction tool, a dental pulp stem cell extractor, a dental pulp delivery window, a dental pulp stem cell extraction tube, a dental pulp stem cell extraction tube carrier, a tooth body carrier, a motor, a high-efficiency filter, a tooth body clamp screw, a tooth body universal control assembly, a tooth body clamp, a tooth body clamp, a forward X-ray machine, a lateral X-ray machine, an extraction device main body, a compressor cooling fan and a compressor. Method: the pulp extraction tool is matched with the dental pulp stem cell extractor to quickly extract dental pulp stem cells, and a biological medical standard system is realized. The present invention is used for extracting dental pulp stem cells.

The invention relates to the technical field of oral medical treatment, in particular to a periodontal examination automatic auxiliary diagnosis method based on oral cone beam CT image and oral scanning data registration, which comprises the following steps: collecting a CBCT image and intraoral scanning data of a patient, analyzing the CBCT image to extract tooth data volume, dental crown cutting end characteristics, coordinates and periodontal information, and identifying enamel and alveolar bone boundary; analyzing oral scanning data to extract dental crown incisal end features and a gingival margin line; cBCT and mouth scanning data are integrated, and after registration, the bag depth, retraction and attachment loss are calculated through measuring points; and displaying the periodontal measurement result in the periodontal reading system and generating a report. According to the method, the boundary lines are intersected with the six measuring surfaces to calculate key points of periodontal examination, namely the enamel boundary point, the alveolar bone boundary point and the gingival margin boundary point, and the bag depth, retraction and adhesion loss are calculated, so that full-automatic generation of periodontal examination results is realized; and in combination with a CBCT film reading tool, the periodontal disease condition is visually displayed and audited, so that manual audit and doctor-patient communication are facilitated.

The invention provides a bevel gear modeling and deviation measuring method and device based on concentric circle laser, and the method comprises the steps: constructing a concentric circle laser three-dimensional model according to laser contour data of a bevel gear tooth surface, and obtaining a three-dimensional point cloud data set of laser contour points; determining a tooth surface point data set of a corresponding laser layer by performing hierarchical analysis on the radial distance from each point in the three-dimensional point cloud data set to the central axis of the bevel gear; performing curved surface fitting on the point data of each laser layer according to the tooth surface point data set to obtain space curved surface models of the laser layers, and combining the space curved surface models of all the laser layers to generate a bevel gear three-dimensional model; the tooth surface geometric deviation of the bevel gear is measured by extracting tooth surface related characteristic data from the bevel gear three-dimensional model; and determining the precision grade of the bevel gear according to a preset gear precision evaluation criterion. According to the scheme, the problems of incomplete bevel gear precision measurement and low working efficiency can be solved, and the working efficiency of bevel gear precision measurement is improved.

The invention discloses a digital human tooth optimization method based on a three-dimensional deformable model and an image, and the method comprises the steps: extracting tooth information from a multi-view image and a monocular video collected by a mobile phone, building a correct shape of a digital human tooth model, and further optimizing the correct position of the digital human tooth model under different expressions; wherein the extraction of the tooth information is based on model transformation logic and camera projection logic, and then tooth feature point information of a person under different expressions is obtained from various images; the tooth model shape is established on the basis of an optimization method, and the tooth model shape is optimized and adjusted on the basis of the extracted tooth feature point information; the position of the tooth model is established on the basis of the correct shape, and the position of the tooth model is optimized and adjusted on the basis of the extracted tooth feature point information. Compared with the prior art, the correct shape and position of the digital human tooth model can be quickly established, and the establishment speed of the digital human tooth model is greatly improved.

A medical image report generation method based on fine-grained attention, comprising: first, extracting teeth and symptom areas in the original X-ray panoramic picture through a pre-trained yolov5 target detection model; extracting features of the original X-ray panoramic picture through a denseNet-121 convolutional neural network, and fusing the features with candidate disease label texts through cross-modal attention to obtain coarse-grained global cross-modal representation. Subsequently, a geometric connection graph is constructed based on the geometric position distribution of the teeth and the symptom areas, so that the teeth and the corresponding lesion areas are aligned in space. Then, the region image features are fused according to the belonging relationship represented by the geometric connection graph through graph attention to obtain fine-grained tooth symptom representation. Finally, the coarse-grained global cross-modal features and the fine-grained tooth symptom representation are input into a transformer bridge tower text generator with two layers of cross-modal attention and controlled by a sentence state forgetting gate to generate a final report text.

The invention discloses an orthodontic tooth arrangement three-dimensional reconstruction method and system based on light field imaging. The orthodontic tooth arrangement three-dimensional reconstruction method comprises the following steps: acquiring light field data of a tooth area; reconstructing a light path according to the light field data to obtain tooth surface light field distribution; extracting tooth geometric features according to the light field distribution, and performing depth estimation on the tooth geometric features to obtain a three-dimensional geometric model; matching the three-dimensional geometric model with the optical data to obtain a tooth optical model; carrying out reality sense verification on the tooth optical model, and judging a digital model passing verification by comparing a rendering result under simulated illumination with an actual tooth appearance; generating a virtual tooth arrangement scene according to the digital model, and dynamically adjusting the virtual tooth arrangement scene to obtain a treatment design scheme; and according to a treatment design scheme, performing simulation evaluation on patient experience parameters, and generating visual feedback by integrating the three-dimensional geometric model and the light field data to obtain a digital orthodontic model. According to the invention, the precision and reality sense of the orthodontic model are improved.

The root analog dental implant includes one or more coronal grooves sized, shaped, and / or configured to correspond to the size, shape, and / or location of the bone crest of the extracted tooth that the root analog dental implant is designed and manufactured to replace. The coronal grooves may be configured to engage the bone of the alveolar socket to enhance engagement between the root analog dental implant and the alveolar socket, particularly after placement of the root analog dental implant within the alveolar socket site and prior to osseointegration of the root analog dental implant with the alveolar socket. This promotes stability of the root analog dental implant within the alveolar socket site immediately after insertion, thereby reducing migration of the root analog dental implant within the alveolar socket site, reducing the likelihood of foreign material, such as bacteria or food, entering the alveolar socket site, and / or reducing the risk of implant fracture and jawbone injury.

This invention relates to the field of artificial intelligence technology, and more specifically, to a method for guiding oral self-examination based on active learning. The method includes the following steps: Step S1: The user terminal acquires a current oral color image; the oral self-examination processing module calls a tooth segmentation network to generate a tooth segmentation mask corresponding to the current oral color image, and extracts tooth image blocks; Step S2: Candidate target tooth areas with prediction uncertainty index values ​​greater than or equal to a first threshold are selected from the tooth area status table; the candidate shooting action with the highest information gain comprehensive score is selected to generate an oral self-examination guidance instruction; Step S3: The oral self-examination guidance instruction is displayed until the prediction uncertainty index values ​​of all tooth areas in the tooth area status table are less than a second threshold or the currently executed shooting count reaches the maximum shooting count. This invention can significantly reduce invalid shooting, improve information acquisition efficiency, and concentrate limited shooting opportunities on key tooth areas.

This invention belongs to the field of endodontics, specifically relating to a simulated dental jaw model for the entire process of endodontic treatment. It includes a maxillary model, a maxillary base, a maxillary joint, a mandibular model, a mandibular base, a mandibular joint, a connecting device, a cervical joint, and a tail fixation device. The mandibular model includes a mandibular shell, a movable micro-adjustment module, and an extracted tooth. The mandibular shell is filled with a water-absorbing gel-like material. The movable micro-adjustment module is detachable. This invention allows for the rapid fixation and replacement of extracted human teeth, and can also recreate the adjacent relationships, periodontal microenvironment, and moist conductive environment around the tooth root. It can highly simulate the physiological conditions of extracted teeth within the dentition and jawbone, and is suitable for various teaching and training programs in endodontic microsurgery, dental restoration, and microsurgical root canal treatment, greatly expanding its application scenarios.

The present application relates to the field of oral medical technology, in particular to a periodontal examination automatic auxiliary diagnosis method based on oral cone beam CT image and mouth scanning data registration, comprising collecting patient CBCT image and intraoral scanning data, analyzing CBCT image to extract tooth data body, tooth crown cut end feature, coordinates and periodontal information, identifying enamel and alveolar bone boundary; analyzing mouth scanning data to extract tooth crown cut end feature and gum line; integrating CBCT and mouth scanning data, calculating pocket depth, recession and attachment loss after registration through measuring points; displaying periodontal measurement results on the periodontal reading system and generating a report. The present application calculates the key points of periodontal examination, enamel boundary points, alveolar bone boundary points and gum line boundary points by respectively intersecting the boundary line with six measurement surfaces, and calculates pocket depth, recession and attachment loss, realizes automatic generation of periodontal examination results, visualizes and audits the condition of periodontal disease by combining CBCT reading tool, and is convenient for manual audit and doctor-patient communication.

The application discloses a method for generating a panoramic image of a multi-view oral cavity image of a water pick based on image enhancement, and belongs to the technical field of oral cavity image processing. The method comprises the following steps: acquiring an original image sequence of an oral cavity continuously collected by a built-in camera of a water pick at multiple views, and recording a nozzle attitude angle and a water flow pressure value; performing dynamic water mist attenuation compensation on the original image according to the attitude angle and the pressure value to obtain a defogging transmission image; segmenting the defogging transmission image into a tooth region and a gum region, performing high-frequency detail enhancement based on a local gradient domain and low-frequency noise suppression based on a Gaussian model on the tooth region and the gum region respectively, and merging to generate a first enhanced image; extracting tooth edge feature points in the first enhanced image, combining the attitude angle to construct a sparse matching point set, driving an elastic deformation field to perform non-rigid registration, and obtaining a registration image stack; and performing multi-band fusion on the registration image stack to output an oral cavity panoramic image. The method eliminates water mist interference, highlights tissue details, and obtains a clear and complete oral cavity panoramic image.

The manufacturing method comprises the following steps: constructing a to-be-scanned area of a to-be-extracted tooth, and obtaining a first three-dimensional model based on the to-be-scanned area; selecting the model of the dental forceps main body according to the tooth position of the to-be-extracted tooth, and obtaining a second three-dimensional model corresponding to the dental forceps main body; constructing a first forceps head clamping part completely matched with the to-be-extracted tooth at the position of the to-be-extracted tooth in the first three-dimensional model, and obtaining a third three-dimensional model corresponding to the first forceps head clamping part; carrying out three-dimensional model splicing on the second three-dimensional model and the third three-dimensional model, and smoothing the joints of the models to obtain a fourth three-dimensional model; and generating a second forceps head clamping part based on a preset entity generation technology and the fourth three-dimensional model, and obtaining the personalized dental forceps based on the second forceps head clamping part and the dental forceps main body. According to the invention, personalized customization of the dental forceps is realized according to different tooth forms, the tooth extraction reliability is improved, and the tissue injury risk is reduced.