24 results about "Permanent tooth" patented technology

To provide an image processing apparatus that can more correctly determine a row of teeth having permanent teeth and milk teeth mixed therein.SOLUTION: An image processing apparatus comprises: an acquisition unit that acquires an image of the inside of the oral cavity; an estimation unit that estimates a row of teeth from an image acquired by the acquisition unit by using a learning model that has learned the relationship between the image of the inside of the oral cavity and the row of teeth; and a correction unit that makes a correction on a result of the estimated row of teeth on the basis of a rule related to the order of losing the milk teeth and getting the permanent teeth.SELECTED DRAWING: Figure 4

The invention relates to the general technical field of artificial intelligence, in particular to a children's deciduous permanent tooth replacement period anomaly analysis system based on deep learning, which comprises an image acquisition module, an image screening module, an image processing module, a deciduous permanent tooth prediction module and an anomaly detection module, the image screening module is used for screening target images, the image processing module is used for acquiring analog images, the deciduous permanent tooth prediction module is used for acquiring deciduous permanent tooth detection results, and the anomaly detection module is used for acquiring deciduous permanent tooth anomaly conditions. According to the invention, deep learning and anomaly analysis are carried out on the child tooth image through cooperation of the modules, so that detection and anomaly risk assessment are carried out on the child deciduous permanent teeth through the child tooth mobile phone image, and the child oral image processing efficiency and the child deciduous permanent tooth anomaly analysis efficiency are improved.

The invention aims to provide a biodegradable deciduous tooth repairing post-core material and a preparation method thereof. Deciduous tooth caries (Deciduous tooth decay) and residual roots and crowns of deciduous teeth caused by trauma of the deciduous teeth are clinically common symptoms. A clinically common permanent tooth root pipe pile core system affects replacement of deciduous permanent teeth due to non-absorbability and cannot meet the performance requirement for repairing residual roots and crowns of the deciduous teeth. The time limit and performance requirements of clinical application are fully considered. The polylactic acid is subjected to toughening modification by a block polymerization method, so that the toughness and strength of the polylactic acid are improved, and the elasticity modulus of the polylactic acid and the elasticity modulus of deciduous teeth are within the same quantity range. According to the invention, tooth growth-promoting raw materials such as hydroxyapatite are synthesized into the post-core material, so that the post-core material has an obvious effect in the aspects of anti-caries repair. Experiments prove that the product provided by the invention has good biocompatibility, and is degradable and absorbable.

Disclosed is a removable airway appliance for guiding and developing the lower and upper jaws forward. The removable airway appliance may include an anterior acrylic section having a specified amount of the palate / roof of the mouth and lingual side / inside of top front teeth to direct the forces of development, a posterior acrylic section providing retention over the primary / baby molars, expansion screws set at different angles for up / down and side / side growth and development, and clasps for retention in case if permanent teeth are present. On the horizontal axis the screws can be positioned flat at a small angle or at a steeper angle to help direct the direction of growth and development of the upper and lower jawbones, while the side-to-side directs the amount of increased width of the arch.

The invention relates to the technical field of artificial intelligence, and discloses an age prediction method and system based on an oral anterior panoramic X-ray film, and the method comprises the steps: obtaining the development stage data of each permanent tooth through the relative fixed space coordinate information of the oral anterior panoramic X-ray film and each permanent tooth through optimized YoloV8; the development stage data of all the permanent teeth are numeralized and then added to obtain the development stage sum Sum of all the permanent teeth, and then the oral cavity normal position panoramic X-ray film and the Sum are transmitted into a classification model TANet to obtain the inference result of the individual age. Compared with the existing age prediction technology, the method has the advantages that the age is classified and predicted by using the learning ability of deep learning, the serious dependence on the Demirjian judgment standard is avoided, the systematic error caused by the Demirjian judgment standard is reduced, and compared with the huge demand of the traditional model on the data quantity, the TANet model is more suitable for the age classification task of the oral orthotopic panoramic X-ray film, and the accuracy of the age classification task of the oral orthotopic panoramic X-ray film is improved. The problem is relieved by using a pre-training model vitb16 and introducing permanent tooth development stage auxiliary reasoning.

Embodiments of the present application provide a method and device for determining tooth numbers, obtaining first crown data and second crown data of the same patient in the same treatment stage; determining the tooth number of the second tooth as the tooth number of the first tooth based on the overlapping degree of the crown of the first tooth in the first crown data and the crown of the second tooth in the second crown data, the overlapping degree of the first tooth satisfying a first set threshold; determining the tooth number of any third tooth in the second crown data according to the positional relationship between the crown of the second tooth with the tooth number and the crown of the third tooth; the third tooth is any tooth in the second crown data except the second tooth with the tooth number. By pairing the tooth numbers according to the first crown data and the second crown data, the tooth number of the corresponding permanent tooth in the second crown data and the tooth number of the embedded tooth in the second crown data are determined, thereby improving the efficiency and accuracy of determining the tooth number.

Medical device based on Aloe schweinfurthii (anteriacae) for the preservation and regeneration of living cells, specifically the cells of the periodontal ligaments of an avulsed immature permanent tooth. A medical device based on Aloe schweinfurthii (anteriacae) for the preservation and regeneration of living cells, specifically periodontal ligament cells, from avulsed permanent teeth. The present invention relates to the technical field of preserving living cells, specifically periodontal ligament cells, using concentrations of 5 to 50% of Aloe schweinfurthii mucilaginous gel in avulsed permanent teeth. The invention provides a low-cost preservation method with maximum safety; in fact, studies on its general oral toxicity in rats have shown no organ damage during the study period. This has enabled the development of a medical device for the safe preservation of living periodontal cells from avulsed teeth.

Embodiments of the present invention provide a method and apparatus for determining the tooth number of a tooth. The method comprises: acquiring first dental crown data and second dental crown data of a same patient in at least one treatment stage; on the basis of the degree of overlap between the dental crown of a first tooth in the first dental crown data and the dental crown of a second tooth in the second dental crown data, determining the tooth number of the first tooth having a degree of overlap satisfies a first set threshold as the tooth number of the second tooth; and on the basis of a positional relationship between the dental crown of the second tooth having the tooth number and the dental crown of a third tooth, determining the tooth number of the third tooth, wherein the third tooth is any tooth other than the second tooth having the tooth number in the second dental crown data. By matching the tooth numbers on the basis of the first dental crown data and the second dental crown data, the tooth number of a corresponding permanent tooth in the second dental crown data and the tooth number of an impacted tooth in the second dental crown data are determined, thereby improving the efficiency and accuracy of determining the tooth number of a tooth.

This invention relates to the development of a biodegradable scaffold containing growth factor and antibiotic loaded nanoparticulate systems with the aim of enabling the regeneration of the pulp-dentin complex of immature permanent teeth with necrotic pulp damaged due to infection, trauma, or developmental anomalies.

The utility model discloses a post-filling groove plate embedded part, and particularly relates to the technical field of embedded parts, the post-filling groove plate embedded part comprises a U-shaped post-filling groove plate part, the middle part of the U-shaped post-filling groove plate part is provided with an adjusting hole, a T-shaped bolt is arranged in the adjusting hole, the two sides of the adjusting hole are provided with constant teeth, the constant teeth and the T-shaped bolt are arranged in a matched manner, the outer side of each constant tooth is provided with a longitudinal rib, and the longitudinal ribs are arranged in the U-shaped post-filling groove plate part. The outer side of each longitudinal rib is symmetrically provided with a rear expanded-base anchor bolt, each rear expanded-base anchor bolt is sleeved with an expansion pipe, the U-shaped rear compensation groove plate is formed by heating steel and then performing extrusion forming, a groove-shaped cavity is formed in the middle of the U-shaped rear compensation groove plate, two longitudinal ribs are arranged in the groove-shaped cavity, a mounting groove is formed between the two longitudinal ribs, and the U-shaped rear compensation groove plate is arranged in the mounting groove. And an adjusting hole is formed in the middle of the mounting groove. According to the utility model, the safety risk caused by solder skips during the installation of the embedded part and the adapter is avoided, and the construction period can be shortened, so that the labor use and the time cost are reduced.

The present application relates to the technical field of oral image recognition, and discloses a mixed tooth site recognition method for a local oral image, a storage medium and a device. The method comprises the following steps: collecting a clinical local oral image, manually marking tooth site numbers and category information, and forming an original data set; replacing the tooth site numbers of the original data set with corresponding permanent tooth numbers at the same position, deleting the category information, and forming a tooth site marked data set; deleting the tooth site numbers in the original data set, and numerically representing the category information, to form a classification marked data set; training a tooth site recognition model through the tooth site marked data set; training a classification recognition model through the classification marked data set; obtaining an oral image to be recognized, recognizing the tooth site numbers of the teeth in the oral image through the tooth site recognition model, and recognizing the category of the teeth in the oral image through the classification recognition model. The method can improve the stability and accuracy of recognizing the positions of the teeth from a local oral image.

The invention provides a separation and preparation method of dental pulp stem cells. The method comprises the following steps: using dental stem cells (DSC) separated from dental pulp tissues of human permanent teeth or deciduous teeth; obtaining a single-cell suspension through a double-enzyme digestion method; washing the single-cell suspension and the phosphoric acid buffer salt solution with the same volume for three times; carrying out adherent culture on the undigested tissues; culturing in an improved MEM culture medium (MEM-alpha) supplemented with fetal calf serum (FBS) with the volume fraction of 20%, penicillin with the volume fraction of 100 g / ml and streptomycin with the volume fraction of 100 g / ml in an incubator at the temperature of 37 DEG C under the condition of 5% CO2; according to the double-enzyme digestion method, the culture medium is replaced every two days; the culture medium is replaced once every 4-5 days by the tissue adherence method; after 90% confluence is achieved, performing trypsin digestion to harvest adherent cells; under the condition, the content of CD117 positive cells exceeds 96.67%. The dental pulp stem cells obtained by the method do not induce premature differentiation of cells, the cell proliferation speed is greatly increased, more sufficient nutrition is provided for the cells, synthesis of protein is promoted, proliferation of the cells is promoted, and differentiation of the cells is inhibited; the separation speed and the separation effect are improved, and the operation difficulty is also reduced. By utilizing the method disclosed by the invention, a rapid and stable separation method and an efficient amplification system can be established, and the method has a very wide clinical application prospect in the fields of life science and medicine. Along with continuous development of research, hDPSCs can play a greater role in the medical field.

The utility model relates to the technical field of oral cavity training instruments, and discloses an orthodontic appliance helpful for keeping an interdental gap, which comprises a jaw pad, and an upper tooth socket and a lower tooth socket which are oppositely arranged on two sides of the jaw pad, at least one of the upper tooth space and the lower tooth space is provided with a gap maintaining part, the gap maintaining part comprises a first protrusion extending from the jaw pad to the far end, the first protrusion is used for abutting against the tooth side face on the rear side of the interdental space, and a first preset distance is kept between the first protrusion and the tooth on the front side of the interdental space. According to the utility model, a gap between rear teeth can be maintained, and constant tooth germination resistance cannot be caused.

The invention provides a preparation method of an oral three-dimensional occlusion induction type high-angle bone face type appliance, which comprises the following steps: acquiring upper and lower jaw dentition digital models of a child patient, constructing upper and lower jaw tooth digital models of the child patient after occlusion reconstruction of the upper and lower jaws, and then designing a back tooth occlusion relation and a maximum occlusion contact mode after occlusion reconstruction, a design scheme of the invisible tooth socket containing the gap part is obtained, and a design scheme of the flexible filler is constructed. The invisible tooth socket containing the gap part prepared according to the design scheme can be independently used and can also be matched with flexible filler for use. The orthodontic appliance can solve the technical problem that the existing orthodontic appliance is difficult to simultaneously and effectively control the perpendicularity and inclination of front and rear teeth, adjust occlusion induction and tooth uniformity and adjust the inclination of an occlusion plane during deciduous tooth shedding and permanent tooth eruption of a child patient.

A kind of dental appliance is provided with multiple rings for being sleeved in deciduous teeth or permanent teeth and as fixed point, connecting device, traction hook for traction permanent teeth to be corrected, tongue bar for forming with the resistance area of tongue to avoid the forward extension of tongue and fixing hook for being fixed with permanent teeth to be corrected, ring is fixedly connected with the connecting device, traction hook is fixedly connected with at least one ring, tongue bar is fixedly equipped in connecting device and is located in the lingual side of incisor, and fixing hook is buckled with traction hook by connecting piece.The dental appliance forms multiple tension fixed points, corrects permanent teeth to be corrected, improves the force stability of permanent teeth to be corrected, and reduces the stress of other teeth, reduces the risk of deciduous teeth loosening and falling off.Moreover, the dental appliance forms the resistance area of tongue with the tongue bar, avoids the inadvertent forward extension of tongue, and further avoids the bad habits such as tongue extension, licking teeth, sucking fingers and primary tongue spitting, so as to improve the correction effect.

A permanent tooth eruption direction appliance based on multiple tension points is provided with a plurality of belt rings arranged on deciduous teeth or permanent teeth in a sleeving mode to serve as tension fixing points, a traction hook used for pulling the permanent teeth to be corrected, a connecting device used for connecting the belt rings and a fixing hook used for being fixed to the permanent teeth to be corrected, and the belt rings are fixed through the connecting device. The traction hook is fixedly connected with at least one belt ring, the traction hook extends to the rear of permanent teeth to be corrected from the belt ring, and the fixing hook is buckled with the traction hook through a connecting piece. The device is provided with a plurality of belt rings, the belt rings are respectively arranged on the deciduous teeth or permanent teeth in a sleeving manner to form a plurality of tension fixing points, the permanent teeth to be corrected are corrected, the force application stability of the permanent teeth to be corrected is improved, the stress of other teeth is reduced, and the risks of loosening and falling of the deciduous teeth are reduced.

The invention discloses an invisible appliance based on an electromagnet principle, and relates to the technical field of dental correction, the invisible appliance comprises an upper jaw appliance and a lower jaw appliance, and the upper jaw appliance and the lower jaw appliance are provided with electromagnetic magnetic attraction pieces; the electromagnetic type magnetic attraction piece is used for generating magnetic force after a patient wears the invisible appliance, so that the upper jaw appliance and the lower jaw appliance are attracted to seal the mouth breathing channel. A patient controls the generation of electromagnetic force, so that the influence of wearing of the appliance on the patient is reduced when dining and interpersonal communication are needed, meanwhile, the daily wearing time of the patient can be remotely monitored, and the effect of supervising and urging the patient to wear for an effective time is achieved; the appliance can play a role in moving teeth while inhibiting mouth breathing and mandibular retraction of a patient, and is helpful for maintaining an odontoprisis gap and obtaining a permanent tooth eruption gap for a patient in a tooth replacement period.

The present disclosure provides a method of treating reversible and irreversible pulpitis and / or manage its associated pain in a primary or permanent tooth. The method comprises administering a therapeutically effective amount of a bioactive agent such as glutaraldehyde at an environment of a pH of about 7.0 to about 9.0 to an adult tooth followed by applying a therapeutically effective amount of a cavity liner or base onto the adult tooth that has been treated with the bioactive agent. A kit and a pharmaceutical composition for the treatment and associated pain management are also provided.

The present invention relates to the field of artificial intelligence technology, and discloses an age prediction method and system based on oral panoramic X-rays. The oral panoramic X-ray and the relatively fixed spatial coordinate information of each permanent tooth are used in an optimized YoloV8 to obtain the developmental stage data of each permanent tooth. The developmental stage data of all permanent teeth are digitized and added to obtain the sum of the developmental stages of all permanent teeth (Sum). The oral panoramic X-ray and Sum are then passed together to a classification model TANet to obtain an inference result of the individual's age. Compared to existing age prediction technologies, the use of deep learning's learning capabilities to classify and predict age avoids heavy reliance on Demirjian's judgment criteria and reduces the systematic errors caused by Demirjian's judgment criteria. Compared with the traditional model's huge demand for data volume, the TANet model is more suitable for the age classification task of oral panoramic X-rays. This problem is alleviated by using the pre-trained model vit_b16 and introducing permanent tooth development stage-assisted reasoning.

The present invention belongs to the field of oral orthodontics, and specifically relates to providing an Angle Class III functional orthodontic appliance suitable for patients with high angles, comprising: a cast band, respectively provided on the upper and lower posterior teeth; a maxillary TPA transverse palatal rod, the two ends of which are fixedly connected to the cast band in the maxillary position; an anterior teeth elastic support assembly, provided on the posterior side of the maxillary anterior teeth, fixedly connected to the cast band via a bracket, and used to support the cast band between the molars; a mandibular labial arch, provided on the labial surface of the mandibular anterior teeth, the two ends of which are connected to the cast band in the mandibular position, so that the mandible is maintained in a retracted position; a traction hook, one end of which is fixedly connected to the cast band and the other end is free, and is used to restrict the growth and development of the mandible and promote the growth and development of the maxillary bone. The purpose is to make the orthodontic appliance suitable for patients with low angles, average angles, and high angles, and to be used in conjunction with anterior traction to treat skeletal and dental Class III malocclusions from the growth and development period to the early stage of permanent teeth.

Devices and methods for evaluating dental x-ray images and predicting tooth eruption and / or loss. The device may use one or more trained neural networks to evaluate patient x-rays and dental measurements determined from the patient x-rays to predict about when permanent teeth can be germinated to replace deciduous teeth. The neural network may be trained using a data training set of x-ray images and accompanying dental measurement data.

The utility model discloses a combined orthodontic appliance which comprises an orthodontic appliance main body and a chain-shaped leather collar, the orthodontic appliance main body comprises a metal belt ring I, a metal belt ring II, a metal belt ring III and a lateral positioning assembly for connecting the metal belt ring I, the metal belt ring II and the metal belt ring III in series. In the application, the tail end of the chain-shaped leather collar is wound on the binding ring, the tail end of the chain-shaped leather collar is fixed by matching with the metal belt ring III, the chain-shaped leather collar covers the outer sides of the first permanent tooth, the second permanent tooth and the deciduous tooth, and the lateral limiting of the chain-shaped leather collar is realized through the two groups of side rings; at the moment, traction force towards the cheek side is applied to the first permanent molar through the elastic force of the chain-shaped leather ring, so that teeth are corrected, meanwhile, the corrector is subjected to bonding operation by a doctor and does not need to be taken off and worn by a child patient at home, operation of the child patient and parents is reduced, treatment convenience is improved, the corrector is smooth, the jaw pad is lifted and occluded uniformly, and the treatment effect is good. Compared with a bracket and the like, the comfort is improved, and the child patient acceptability is high.

The invention relates to the field of precision diagnosis and treatment evaluation of oral medicine and artificial intelligence crossing in biomedical engineering, in particular to a clinical effect evaluation system of a permanent tooth pulpitis live pulp preservation treatment scheme, which comprises a preoperative evaluation module used for acquiring a preoperative physiological index set and processing the preoperative physiological index set to obtain an evaluation result of the preoperative physiological index set; the preoperative state of pulpitis of permanent teeth is obtained, so that whether a live pulp preservation treatment scheme is implemented for the permanent teeth or not is determined; the preoperative physiological index set comprises MPI, TOI, CMII and MSI; the preoperative state comprises an inflammation state and an activity state of permanent teeth; and the postoperative effect evaluation module is used for acquiring a postoperative physiological index set in at least one time period after the live pulp preservation treatment scheme is finished, and comprehensively evaluating the postoperative physiological index set to obtain the clinical CES of pulpitis. According to the scheme, a full-cycle accurate quantification technology for pulpitis treatment is provided.

The invention discloses an integrated operation guide plate and obturator design method and a related device, and relates to the field of oral maxillofacial surgery and children stomatology departments, and the method comprises the following steps: obtaining CBCT data and intraoral scanning data; registering the CBCT data and the intraoral scanning data to obtain a digital model of a cyst and an adjacent anatomical structure; carrying out AI automatic analysis on the digital model of the cyst and the adjacent anatomical structure to obtain spatial domain features, geometric feature topological structure setting parameters and cyst healing and permanent tooth eruption trends; based on the airspace features, the geometrical feature topological structure setting parameters and the cyst healing and permanent tooth eruption trend, a plurality of integrated operation guide plates and obtuders are designed in a parameterized mode through the 3D printing technology. Technical bottlenecks of three core links of surgical planning, intraoperative navigation and postoperative drainage can be systematically solved, learning curves are remarkably reduced, and the method has remarkable clinical application value.