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.

A method for denture restoration includes steps of generating sets of digital information of a mouth cavity of a person for providing firstly either an orientation appliance or a temporary restoration and subsequently a final restoration. The digital information is generated firstly from the mouth cavity alone and subsequently with the orientation appliance or the temporary restoration within the mouth cavity. The invention also relates to a system for performing this method, and to an orientation appliance and a prosthetic guide to be used in performing the method.

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 relates to the technical field of medical appliances and discloses an edentulous jaw implant denture repairing window-type impression connector. On a transfer bar of the impression, themiddle part is a fixing portion, the upper part is a shaft shoulder and the lower part is an implant portion. A body of the connector is a round-shaped board having an inner hole of which the diameteris equal to the outer diameter of the upper part of the transfer bar. The side surface of the connector has a square shape being same as the radian of the side surface of the transfer bar. A first ring and a second ring are arranged on the left and right sides of the square shape respectively. The two rings are located at two heights to form an angle therebetween and are respectively connected tothe connector at the front or back side via a connection bar. The connector is convenient to use and can connect the transfer bars stably, thus accurately determining the relative positions of the implants during transfer. The connector can reduce operation time, improve clinical efficiency and increase the precision of horizontal impression of implants.

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 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 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 discloses a dental restoration acquisition method and a denture framework and relates to the technical field of restoration with fixed partial denture. The method comprises the followingsteps: acquiring a diagnostic denture model of a polylactic acid material; laying inlay wax on the diagnostic denture to form a diagnostic denture framework; implanting the diagnostic denture framework of a user mouth, and acquiring an occlusal surface form of a terminal track of a mandibular movement based on the mandibular movement of the user so as to be used for dental restoration. Accordingto the dental restoration acquisition method and the denture framework disclosed by the invention, the complicated process of articulation registration can be simplified, and the precision of the restoration is improved.

The invention discloses a negative pressure suction device beside an oral chair. The negative pressure suction device comprises a safety cover and a negative pressure suction power source, the safetycover is connected with the negative pressure suction power source, the safety cover comprises a cover body and a top cover; an opening is formed in the top of the cover body, the top cover is rotatably arranged at the top of the cover body and is used for sealing the opening, a transparent window is formed in one side of the safety cover, so that the internal situation can be observed conveniently, the safety cover at the same side of the transparent window is provided with an opening, and the safety cover is further provided with a suction opening. According to the negative pressure suctiondevice, the safety cover and the suction device are used, the diffusion of the powder in the safety cover is limited, and meanwhile, the mobility of the internal powder is increased, the problem thatthe repair materials such as denture powder and the like easily pollute the indoor air during denture repair is solved.

The invention discloses a method for digitally generating the external surface of a full crown restoration. The standard crown model is edited; the edited standard crown model is dynamically cut; according to the cut standard crown model, a transitional mesh surface is generated; according to the transitional mesh surface, the outer surface is specially deformed to obtain The outer surface of a full crown restoration. The invention ensures that the standard crown boundary does not interfere with the inner surface boundary, creates a good boundary position relationship for the transition between the standard crown and the inner surface, greatly improves the generation quality of the transition surface, and ensures the design obtained The full crown restoration can retain most of the standard dental and maxillofacial shapes while meeting the specific support strength. The invention can be widely used in the field 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 digitalized generation method for pontic of a full crown bridge. According to a gingival model, a gingival end surface model obtained by utilizing implicit surface isometricoffset based on radial basis function has extremely high smoothness, and no wrinkles or local self-intersection occurs. A proper transition gap is arranged between the pontic and the gingiva, so thatit is avoided that food is stuck in teeth and it is also guaranteed that the pontic has a sufficient bearing capacity. According to the position relationship between a standard crown and a gingival end surface, the standard crown is dynamically cut to create a good boundary position relation for transition between the standard crown and the gingival end surface, and the generation quality of transition surfaces is significantly improved. Meanwhile, according to a whole set of standard crowns with regular forms, the method of transition surface generation based on skin subdivision is adopted incombination with particular forms of the standard crowns, the generation efficiency of the transition surfaces is greatly improved, the real-time effect of the pontic can be shown in the edit state,which is beneficial for editing operation in the next step. The digitalized generation method for the pontic of the full crown bridge can be widely used in the field of dental prosthesis.

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 position and configuration parameter measuring method of a digital denture. The method comprises the following steps: introducing a denture model; adjusting a coordinate system of the denture model, so that a coordinate direction dir of the denture model, wherein the coordinate direction dir satisfies the following relations that an z axle is parallel to the direction ofa long axis, an x axle is parallel to a far-middle-near direction, a y axle is parallel to a buccolingual or labiolingual direction, and the directions of the x axle, the y axle and the z axle conforms to a right-hand rule; in accordance with the coordinate direction dir, recognizing five appearance high points of a denture within an h height range in a mode of calculating coordinate extreme values, wherein the h is a preset height threshold and the h is used for predicting a distance from a dental cusp to a gingival margin; and in accordance with the five appearance high points of the denture, calculating two appearance dimensions and three datum planes. According to the method provided by the invent, by adding the height threshold h, the method not only has the property of being strong in operability but also guarantees the reliability of a recognition result; the method, which calculates the two appearance dimensions and the three datum planes in accordance with the five appearancehigh points of the denture, is more convenient. The method provided by the invention can be widely applied to the denture repair field.

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 discloses a fixed denture denture attachment and a manufacturing method thereof. The fixed denture denture attachment includes a periodontal blocker, a fixed denture, an attachment, and an attachment connection mechanism. The periodontal blocker and the attachment The connection mechanism is combined, the fixed denture is combined with the attachment connection mechanism, the periodontal blocker combined with the attachment connection mechanism and the fixed denture combined with the attachment connection mechanism are connected through the attachment; the manufacturing method of the fixed denture denture attachment It includes preparation of crown and bridge restoration with attachment connection mechanism, molding in the oral cavity to form alveolar bone defect area model, trimming the model, demoulding, placing attachment cathode and anode, complex molding, injection molding and polishing. The invention solves the problem that the periodontal blocker (artificial gingiva) and the fixed denture cannot be worn and used at the same time, has the advantages of both the periodontal blocker and the fixed denture repair, and reduces the operation caused by the traditional oral and maxillofacial surgery bone grafting trauma, with precise shaping, economical price, comfortable and convenient to wear.

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.

A CAD / CAM digital manufacturing method for a formwork-type movable denture, comprising the follow steps: 1) obtaining data: scanning a tooth working model to obtain A data required for CAD design; 2) CAD design: CAD designing a formwork structure B, forming A+ data required for the design of teeth and a base, CAD designing a tooth structure C and a base shape, forming A++ data required for the design of a base mold shell, and CAD designing a base mold shell structure D; 3) CAM manufacturing: extracting three types of data such as the formwork structure B, the tooth structure C, the base mold shell structure D for CAM typesetting, CAM cutting, and then lost wax casting to obtain the formwork structure B, CAM cutting to obtain the tooth structure C, and 3D printing to obtain the base mold shell structure D; 4) injection molding; 5) grinding and polishing. The formwork-type movable denture is simple to manufacture, has high precision and short manufacturing cycle, reduces production cost, and improves the quality of the movable denture restoration.

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 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.

This application relates to a high-precision denture and a preparation method thereof, which includes the following steps: S1, model disinfection; S2, model design; S3, mold inversion; S4, filling the undercut; Crown design; S7, cutting and sintering; S8, inner crown trimming; S9, plastic deposition; S10, sintering; S11, shape modification; S12, glazing; S13, polishing; S14, factory inspection; S15, cleaning, disinfection, packaging. The present application has the effect of increasing the accuracy and quality reliability of the denture restoration.