9 results about "Full Crown" patented technology

The invention discloses an adjustable calibration device and calibration method for assisting tooth preparation, the device comprises a calibration tray, the calibration tray is provided with a common in-place track calibration table, the calibration table is arranged on the calibration tray and can slide along the common in-place track, and the calibration table is also provided with a plurality of calibration tracks; and the calibration rod assembly comprises a fixed rod and a calibration rod which are connected with each other, and the fixed rod is vertically connected to the calibration track. The adjustable calibration device for assisting tooth preparation is simple in structure, easy to manufacture, relatively low in cost and easy to use, and can realize accurate detection of tooth preparation amount through the synergistic effect of the calibration table and the calibration rod assembly, so that insufficient preparation or excessive preparation is avoided; the shaft wall parallelism of multi-tooth preparation can be verified at the same time through combined application of a plurality of calibration tables, the consistency of in-position paths of prostheses is ensured, and the calibration table is suitable for the preparation process of fixed prostheses such as full crown, veneering and inlay restoration and can be well applied to oral medicine and biomedical engineering industries.

This invention relates to the field of full crown restoration technology, and discloses a method and system for extracting the edge lines of a full crown restoration preparation based on deep learning. The method includes: acquiring three-dimensional mesh data of the test subject's preparation; inputting the three-dimensional mesh data of the test subject's preparation into a three-dimensional mesh semantic segmentation network model to obtain the three-dimensional mesh segmentation result of the test subject's preparation; preprocessing the three-dimensional mesh segmentation result of the preparation, and smoothing the preprocessed three-dimensional mesh segmentation result to obtain an accurate three-dimensional mesh segmentation result; calculating the segmentation edge based on the accurate three-dimensional mesh segmentation result to obtain a rough edge line of the preparation; and performing smoothing and projection processing on the rough edge line of the preparation to obtain a smooth edge line of the preparation on the three-dimensional mesh. This invention can assist in annotating the edge lines of the preparation, saving restoration design and fabrication time, and reducing annotation errors caused by subjective factors.

The utility model belongs to the field of dentistry, solves the problem of eliminating a gap between adjacent teeth by using a minimally invasive method, and relates to an anti-impaction minimally invasive inlay, which comprises an inlay and an attaching surface directly connected to the side surface of the inlay, and the attaching surface is provided with a first wing and / or a second wing matched with the surface shape of the adjacent teeth. The root of the first wing and / or the root of the second wing are / is directly connected with the inlay, the first wing and the second wing are provided with gluing surfaces, the gluing surfaces are used for smearing adhesive so that the veneering can be attached to the surfaces of adjacent teeth, and the gluing surfaces are provided with glue containing grooves which are concave inwards from the surfaces. The veneer is used for eliminating the gap between the repaired decayed tooth and the adjacent tooth, so that the gap does not need to be eliminated by two connected full crowns.

According to the repairing crown for planting and the preparation and treatment method thereof, the adjustable contact area design of the repairing crown for planting does not affect the strength of a final restoration body, meanwhile, the bonding strength of composite resin can be improved, and micro-leakage of the edge of the composite resin can be reduced. In addition, due to the mechanical strength of the filling type composite resin, excessive physiological abrasion of an adjacent surface contact area is avoided. When a contact area gap is caused by physiological change of adjacent teeth, the restoration of the contact area of the prosthesis can be completed at normal temperature only by taking down the implant prosthesis full crown, a good adjacency relation with the adjacent teeth is constructed, and the puzzling problem of food impaction is solved. The method does not need to repair the separation of the abutment and the all-ceramic restoration and does not need to add porcelain and glaze at high temperature, so that the overall mechanical performance of the planted all-ceramic restoration is ensured.

This application provides a denture teaching model, comprising: a support plate with a mounting part; multiple first-tooth malformations, each with a missing crown and a missing area, the missing areas of each first-tooth malformation being different; a connector that mates with the mounting part and is detachably connected to the support plate via the mounting part; and a second-tooth malformation model, which is mounted on the connector and has a completely missing crown. This solves the problem in existing technologies where, during the process of performing full crown restoration around a second-tooth malformation model, the area between it and adjacent full-tooth models or first-tooth malformations is small, easily causing interference and affecting the wax drip restoration of the second-tooth malformation model.

The invention discloses a full-dentition anchorage spiral expansion device, and relates to the technical field of orthodontic medical instruments. Comprising a spiral expander, a left anchorage assembly and a right anchorage assembly, the orthodontic device is characterized in that each anchorage assembly comprises a groove-shaped metal full crown covering the occlusal surface, the cheek side surface and the lingual side surface of a plurality of rear teeth on the same side, an arch expansion tongue rod fixedly connected with the near-middle lingual side surface of the metal full crown on the same side, and an arch expansion cheek rod fixedly connected with the near-middle cheek side surface of the metal full crown on the same side; the device is high in retention force, high in bony expansion efficiency, good in tooth protection, high in patient comfort level and wide in application range.

The invention discloses an exercise support for stomatology operation, and relates to the technical field of stomatology, the exercise support comprises an upper jaw, one end of the upper jaw is fixedly provided with an upper folding plate, the middle of the upper folding plate is provided with a lower folding plate, one end of the lower folding plate is fixedly provided with a lower jaw, and the upper jaw and the lower jaw are detachably provided with teeth. A driven rod is fixedly connected to the surface of the upper folding plate, a transmission belt wheel is fixed to the surface of the driven rod, a bottom plate is fixed to the middle of the lower folding plate, a driving motor is fixed to the upper end of the bottom plate, and a power shaft is in transmission connection to the surface of the driving motor; according to the invention, palate tremor caused by masseter cramp due to long-time opening of the mouth of a normal patient can be simulated, normal secretion of saliva of the mouth of the patient can be simulated, the authenticity of practice is ensured, and meanwhile, the oral cavity tremor simulation device is suitable for multiple oral cavity practice operations such as tooth cavity preparation, repair full crown preparation, inlay preparation, oral cavity anesthesia, tooth extraction, suture and the like.

A porcelain tooth with an adjustable cantilever, characterized in that the porcelain crown is composed of a porcelain full crown, accessories (ring band, baffle, spring, magnet), a receiving slot, and a small wrench. All accessories are assembled into one and then melted to the buccal and lingual sides of the porcelain crown, and then put on the prepared abutment teeth in the mouth. The ring band is divided into an inner ring band and an outer ring band, and the two are connected and fixed. A spring is installed between the baffle and the inner ring band, and a limited release mechanism is installed between the baffle and the inner ring band, and the limited release mechanism is used to limit the baffle from being separated from the inner ring band in the sliding direction. A limited release mechanism is also installed at the contact point between the baffle and the receiving slot, and the limited release mechanism is used to limit the baffle from being separated from the receiving slot in the sliding direction. After the baffle is in place, it is used to block the black triangle to prevent food from being stuck. The porcelain tooth with an adjustable cantilever solves the problem of horizontal food sticking caused by the "black triangle" after the patient's porcelain crown restoration in the prior art.

The application relates to a manufacturing method of an integrated post core based on a single tooth impression, an integrated post core and a post core system, and relates to the technical field of dental post core repair. The method can solve the problems of poor post core positioning and poor suitability. The method comprises the following steps: performing tooth preparation on a diseased tooth according to the requirements of full crown repair, and performing root canal post channel preparation on the diseased tooth by using a reaming drill; performing a single tooth impression on the diseased tooth to obtain a post core impression of the diseased tooth, scanning the post core impression of the diseased tooth to obtain a digital single tooth impression, and then performing intraoral dentition scanning on the patient; performing digital design and processing and manufacturing of the integrated post core according to the digital single tooth impression and the intraoral dentition scanning result, to obtain an initial integrated post core; performing model trial fitting and adjustment on the initial integrated post core to obtain a target integrated post core, and performing clinical trial fitting and adhesion on the target integrated post core.