40 results about "Denture Repair" patented technology

The invention relates to a digital designing and making method of an individual tray without edentulous jaw function pressure. The method includes: making an edentulous jaw preliminary impression; scanning the impression or a model to obtain data 1; scanning alveolar ridges of upper and lower jaws to obtain jaw position relation data 2; registering the data 1 to the data 2; completing undercut filling and buffering on the surfaces of the alveolar ridges of the upper and lower jaws; creating a dentition positioning coordinate system in the data 1; scanning a pair of upper-lower jaw dentition reference gypsum models to acquire data 3; creating a dentition posture coordinate system in the data 3; registering the data 3 to the data 1 through coordinate system registering; using a triangular grid to fill gaps between upper and lower jaw data 1 and the data 3 to acquire STL data of the individual tray; printing upper-lower jaw trays. The method replaces complex steps of conventional manual making, clinical operation steps are simplified, operation difficulty is lowered, and clinical diagnosis and treatment efficiency of edentulous jaw complete denture repair is improved.

The invention relates to the field of computer assistance, and provides a false tooth restoration scheme design method and system based on data decision. The method comprises the following steps: S1,establishing a dentition condition database and a false tooth restoration scheme database; S2, detecting the conditions of all the current teeth to obtain detected current dentition data; S3, analyzing the data of the flag bits of each tooth number in sequence according to the collected current dentition data, and analyzing all the flag bits to obtain a preliminary denture restoration numbering scheme; And S4, further determining whether secondary data adjustment and scheme alternative need to be carried out or not, and obtaining a final false tooth repair design scheme. According to the technical scheme provided by the invention, the digital logic basis of false tooth design is favorably provided from the perspective of data analysis and decision making; A scheme for automatically designing denture restoration is established through a data decision method, a pre-restoration recommendation scheme is automatically given, clinicians are assisted in scheme making and correction, and the workload of large hospital doctors is reduced.

The invention relates to the field of denture repair methods, in particular to a denture repair method. The repair method comprises the steps as follows: a) mounting a scanning pole on an implant in apatient mouth; b) scanning image information about upper jaw teeth and lower jaw teeth in the patient mouth with the scanning pole in a computer by a scanner; c) obtaining complete scanning pole information from a software database of the computer to determine the depth of the scanning pole in upper and lower jaw tooth models and the angle and position of the scanning pole on the upper and lowerjaw tooth models; d) designing matched dental crowns and abutments according to all image information of upper and lower jaw teeth and the scanning pole. The scanning pole is directly mounted in the patient mouth, image scanning is performed on the upper and lower jaw teeth in the patient mouth by the scanner, the obtained image information is transmitted directly through the computer, the dentalcrowns and the abutments are produced according to the image information, the trouble of producing plaster models is avoided, and the efficiency is improved.

The invention relates to a method for producing high-geometric precision elements made from a neutral material. Using different types of prosthetic restoration, said elements are intended to fill the damage caused in teeth by dental caries or tissue alteration having other causes. The inventive elements are also intended to be used to produce high-precision dental crowns or other related dental devices. The method is characterised in that: a model (10), which is designed to fill the missing dental tissue that has been destroyed, is made either in vivo, updating and defining a new volume (2) that is bordered by healthy tissue and having a tapered wall, or in vitro, taking an impression in the mouth of a dental preparation using an impression compound, said impression then being cast in plaster, and updating and defining a new volume (2) using said positive plaster model; the measurements of said model (10) are then taken in 3D using a three-dimensional measuring apparatus (4, 15, 17) with light wavefront analysis and volume analysis which is carried out using shots, a projector (15) being positioned at an angle to a camera (17) and said projector (15) and camera (17) being mechanically and geometrically linked to a revolving platform (18) that is used to support the model by means of a frame (19) in order to obtain good triangulation; the data are processed electronically (12) to remodel the morsels of volume; the files are subsequently modified electronically to determine exactly the desired profile; and the final element to be implanted is machined with a digitally-controlled machine (6, 23, 24, 22).

The invention discloses an automatic extracting method for a neck-edge line of a denture repair preparation mesh model. The method comprises the following steps: S1, determining an iteration starting point of the neck-edge line; S2, carrying out morphological processing on a characteristic region, so as to iteratively extract a characteristic line and build a characteristic point set; S3, iteratively extracting the neck-edge line on the basis of neighborhood traversal according to the iteration starting point of the neck-edge line and the characteristic point set. According to the method disclosed by the invention, the neck-edge line is extracted on the basis of the morphological processing and neighborhood traversal mode, the neck-edge line of denture repair preparation can be rapidly and accurately extracted, thus the calculated quantity is greatly reduced; the extraction accuracy is high; the demands on denture preparation are low, and therefore, the method can be widely applied to the field of extraction of the neck-edge line of the denture repair preparation.

The invention relates to a high-precision false tooth and a manufacture method thereof. The manufacture method of the high-precision false tooth comprises the following steps of: S1: carrying out model disinfection; S2: carrying out model design; S3: carrying out moulding; S4: filling an inverse cavity; S5: carrying out edge lathing and mould repairing; S6: carrying out numerical control inner crown design; S7: carrying out cutting and sintering; S8: trimming an inner crown; S9: carrying out piling moulding; S10: carrying out sintering; S11: trimming a form; S12: carrying out glazing; S13: carrying out polishing; S14: carrying out delivery inspection; and S15: carrying out cleaning, disinfecting and packaging. The manufacture method has the effect that the accuracy and the quality reliability of a false tooth prosthesis can be improved.

The invention discloses a mountable fibula reconstruction and jawbone defect model, and a manufacturing method and application thereof. The model comprises jawbone defect model bodies and fibula modelbodies. The manufacturing method comprises the following steps: constructing a complete jawbone simulation model and a fibula simulation model by using computed tomography (CT) scanning and a medicalsoftware; then designing a fibula section which is most suitable for reconstructing a pathological jaw through a reconstruction and cutting simulation method; adjusting a rotation angle; printing jawbone defect model bodies and fibula model bodies through a 3D printing technology; and finally, performing assembling through connecting bulges and connecting grooves on the jawbone defect model bodies and the fibula model bodies. The application comprises manufacturing a fibula osteotomy reconstruction composite guide plate required for fibula cutting by using the model provided by the invention.According to the invention, a fibula can be more accurately cut, so that a reconstructed jawbone can better recover facial appearance of a patient and can accurately adapt to jaw alveolar ridges, anddenture repair can be better performed after the operation. The osteotomy reconstruction composite guide plate can overcome the defect of secondary perforation on a fibula and can improve operation precision.

The invention provides a mandibular posterior tooth lowering device. The device comprises an implant fixed in an alveolar bone corresponding to a missing gap in the vicinity of mandibular posterior teeth after natural teeth fall and a lowering mechanism fixedly connected with the implant, the lowering mechanism includes a fixing position base and a buccal tongue side lowering rod connected to thefixing position base, the fixing position base is wrapped around and fixed to the upper portion of the implant, the buccal tongue side lowering rod is respectively located on the mandibular posteriortooth buccal tongue side which needs to be lowered, the height of the buccal tongue side lowering rod is lower than the height of the mandibular posterior teeth to be lowered, the buccal tongue side lowering rod is respectively provided with a plurality of buccal tongue side traction columns, and the buccal tongue side traction columns are hooked with rubber chains which bypass the occlusal surfaces of the mandibular posterior teeth and apply pressure to roots of the occlusal surfaces. According to the device, the rubber chains hooked to the buccal tongue side traction columns bypass the occlusal surfaces of the mandibular posterior teeth and apply pressure to the roots thereof, the elastic pressure of the rubber chains are transmitted to the mandibular posterior teeth to achieve loweringof the height of the mandibular posterior teeth, and space for supramaxilla corresponding area denture repair is opened up.

The invention provides a rapid tooth segmentation method based on a three-dimensional dental model. The method comprises the following steps: S1, carrying out data preprocessing on an input three-dimensional dental model; S2, re-modeling the shape on the three-dimensional dental model; s3, determining grid maximum path search based on an Astar algorithm; and S4, identifying gingival margin line and fusion region features by using a convolutional neural network, and separating out a single tooth. According to the segmentation method, each tooth can be rapidly and accurately segmented, and a better reference value is provided for doctors for subsequent denture repair.

The invention discloses a denture repairing structure and method. The denture repairing structure includes periodontal fiber splint and composite resin. Artificial teeth in the denture comprise problematic artificial tooth and problem-free artificial tooth on both sides, grooves are formed in the side, close to the tongue, of the problematic artificial tooth and the problem-free artificial tooth on both sides, the periodontal fiber splint is arranged in the groove, and is used for connecting the problematic artificial tooth and the problem-free artificial tooth on both sides. According to theinvention, the periodontal fiber splint and the composite resin firmly fixes the problematic artificial tooth and the problem-free artificial tooth on both sides, repairing of denture is rapidly completed, the repairing period is shortened, and normal use of the repaired denture of a patient is guaranteed. In addition, the composite resin does not scratch lips or tongues, so that the repaired denture used by the patient has no foreign body sensation, is more comfortable and attractive in appearance, and is basically consistent with the unrepaired denture in appearance.

The present invention provides a dental gypsum or gypsum composition with low expansion ratio and high strength, its preparation process, use method and application. The invention uses green additives, has few additives, and has low production cost, and can simply and effectively reduce the expansion coefficient of general dental gypsum materials to a very low level. At the same time, it has comprehensive advantages such as strong operability, adjustable setting time, good mechanical properties, and stable curing performance, which better solves the difficulty of denture restoration in the oral cavity, poor adhesion, fulcrum, and insufficient retention force. Application problems such as long clinical adjustment time ensure the effect of denture restoration.

The invention relates to an immediate load-bearing transition denture, a combination device and a digital preparation method, and relates to the technical field of dental restoration.The immediate load-bearing transition denture comprises a base plate, the base plate is provided with a matching groove used for being matched with the gum tissue contour; the denture prosthesis is connected to the base plate, a fixing hole is formed in the denture prosthesis and/or the base plate, and the fixing hole is used for fixing the denture on an implant; the retention nail seat is provided with at least two retention nail holes penetrating through the base plate; the combined device comprises an immediate load-bearing transition false tooth, a retention nail guide plate and an implantation guide plate, the digital preparation method comprises the steps that a first digital model and a second digital model are established and matched, planting holes and retention nail holes are established in the first digital model, three-dimensional digital models of the planting guide plate, the retention nail guide plate and the immediate load-bearing transition false tooth are generated respectively, and the three-dimensional digital models are printed through 3D. The application has the advantage of being beneficial to immediately loading the transitional denture after the implantation operation is completed.

The invention discloses a jaw position relation recording auxiliary device and a jaw position relation recording method. The jaw position relation recording auxiliary device comprises a first bendingpart, wherein the first bending part is used for abutting against an upper alveolar ridge; a second bending part which is used for abutting against the lower alveolar ridge; and a connecting part which is connected with the first bending part and the second bending part, wherein the opening direction of the first bending part is far away from the second bent part, and the opening direction of thesecond bending part is far away from the first bendingpart. The first bending part and the second bending part of the device are placed in the mouth of a patient with dentition loss to abut against the corresponding upper and lower alveolar ridges; after occlusion of the central relation position is formed, the connecting part becomes a bridge for connecting the upper jaw and the lower jaw, upperjaw and lower jaw data images with the determined correct jaw position relation can be formed, and complete denture repair can be effectively assisted through information reflected by the data images.In the whole using process, only the device needs to be placed in the inlet, and operation is easy and convenient.

The invention discloses a tooth glaze composition, a tooth glaze forming method and a denture prosthesis. The tooth glaze composition comprises, by mass, 53-65% of SiO2, 6-15% of B2O3, 8-12% of Na2O, 6-8% of K2O, 1-3% of Li2O, 2-5% of an alkaline earth metal oxide, 5.5-11% of Al2O3 and 0.5-2% of ZrO2, and the alkaline earth metal oxide is CaO or a mixture of CaO and SrO. The tooth glaze composition disclosed by the invention has a relatively low sintering temperature, and the application range of the tooth glaze composition is widened, so that the tooth glaze composition not only can be applied to restoration matrixes of zirconium oxide, metal and the like with high melting temperature, but also can be applied to restoration matrixes of glass ceramics, cast porcelain, baked porcelain and the like with low melting temperature.

The invention relates to a jaw position recording tray and a method for determining a jaw position relation. According to the jaw position recording tray, the shape of the tray is matched with the oral cavity structure of an edentulous jaw patient; the tray comprises a base support and supporting tables which are respectively located at two sides of the base support; a tray handle connected with the base support is arranged at the front end of the tray; the tray handle is a flange inclining downwards and outwards; a supporting rod hole is reserved in a position, corresponding to the first molar of the upper jaw of the human body, of each supporting table; a screw joint mechanism is arranged in each supporting rod hole; and each screw joint mechanism is matched with a supporting rod with threads. The jaw position recording tray provided by the invention is reasonable in structural design, and can reduce the operation difficulty of a doctor for determining the jaw position relation during complete denture repair of the edentulous jaw patient. By using of the method for determining the jaw position relation through the jaw position recording tray provided by the invention, the jaw position relation can be determined by sequentially determining the plane, vertical distance and horizontal relations, and is easy in operation and accurate in jaw position recording.

The invention relates to a false tooth template artificial intelligence matching design method based on a multivariable decision tree, which comprises the following steps of: 1) manually manufacturingcomplete denture artificial dentition and edge gingiva models on a mechanical occlusal frame in batches by using a plurality of types of finished artificial teeth and base wax; 2) scanning to obtainthree-dimensional data; 3) performing directory tree classification on the scanning data according to a plurality of variables to obtain a template database; 4) scanning current complete denture repair measurement data, and screening step by step according to the sequence in the step 3); 5) matching the selected design template to the alveolar ridge of the upper jaw and the lower jaw of the patient; 6) generating a design result of the base plate and the complete denture after finely adjusting the spatial position and posture. According to the method, the alveolar ridge data of the patient canbe accurately matched with the standard denture template data in the template database, so that the denture expert design template suitable for the current patient is obtained, the manual manufacturing step of a technician is omitted, the automation degree of complete denture design is improved, and the efficiency is improved.