40 results about "Denture Repair" patented technology

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 discloses a false tooth bridge fusion method used for oral repair. The false tooth bridge fusion method comprises the following steps: S1, separately establishing bounding boxes corresponding to two adjacent models of a false tooth bridge fusion body based on a bounding box algorithm; S2, separately traversing the bounding boxes of the two adjacent models, dissolving to obtain a crossed part of the bounding boxes of the two models, calculating an intersection line of the two models, and performing regional division on the two models according to the intersection line; S3, calculating and screening a redundant area in an area divided by the two models, and deleting the redundant area; and S4, performing boundary matching and suturing on the two models subjected to the area deletion, and performing smooth treatment. The method is less in calculating amount, adopts a single algorithm, is convenient to implement, has a better fusion effect, and can be widely applied to the false tooth repair industry.

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 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 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.

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.