10 results about "Maxillary arch" patented technology

A method of producing a retention piece having a guidance package configured to provide a desired movement profile including: obtaining data descriptive of mandibular and maxillary arches, an index position of the mandibular arch at a maximum closure position, and a temporomandibular joint of a recipient; specifying an appropriate guidance package based on the desired movement profile; positioning a retention piece comprising at least a portion of the specified guidance package about virtual representations of at least one of the mandibular and maxillary arches within a virtual articulator; modeling relative movement of the virtual representations of the mandibular and maxillary arches within the virtual articulator; and generating data that can be used by a computer aided machining (CAM) process to create at least one physical retention piece comprising the specified guidance package configured to provide the desired movement profile.

The present invention relates to an orthodontic appliance (1) adapted to fit the maxilla of a patient comprising A) at least one central retractor (2) incorporating an expansion screw (4) allowing its retraction and that, consequently, of the maxillary arch (MA) of the patient, which central retractor (2) is integral with: A1) A first symmetrical pair of posterior retention arms (5), each retention arm (5) being coupled to a ring (3) of a first pair of rings (3) allowing the fixation of the appliance (1) on the right and left permanent molars of the maxillary arch (MA) of the patient, at least one of the rings (3) also constituting the distal element of a distalization assembly (12) comprising at least two elements, A2) At least one symmetrical pair of anterior retention arms (8) which bears against the palatal surface of teeth anterior to the right and left molars to which the first pair of rings (3) are fixed right and left;A3) A second symmetrical pair of posterior retention arms (6), each retention arm (6) being formed of two distinct segments with a first segment coupled to a ring (3) of the first pair of rings (3) and a second segment coupled to the central spreader (2), which first and second segments are associated by a joint (7).

The application provides a system and method for predicting the amount of bone expansion of maxillary expansion based on digital images, which comprises a CBCT image acquisition device, an image correction module, an image measurement module, a data analysis module and a data output module. The CBCT image acquisition device acquires a CBCT image in a natural head position and a bite position of a dental cusp staggered position. The image correction module corrects the head position and obtains a palatal cross-sectional view. The image measurement module measures the depth IDP of the palatine bone pyramid protrusion embedded in the sphenoid ala notch of the pterygopalatine fissure on the palatal cross-section. The data analysis module determines the embedding shape type of the pterygopalatine fissure according to the IDP value. The data output module outputs whether the predicted amount of bone expansion is sufficient according to the type of the pterygopalatine fissure. The system and method can predict the expansion treatment effect of the population with insufficient transverse development of the maxilla by predicting the amount of bone expansion, especially the effect of the micro-implant assisted rapid expansion of the maxilla.

A dental prosthetic positioning assembly comprises an occlusal assembly and a maxillary arch subassembly. The occlusal assembly includes a maxillary tray configured to be formed in a patient's maxillary alveolar ridge, wherein the maxillary tray comprises a occlusal rim component. The occlusal assembly further includes a carriage frame component composed of biocompatible magnetic metal material anchored to the maxillary tray. The maxillary arch subassembly comprises a plurality of prosthetic maxillary teeth components magnetically anchored to the occlusal rim component. The carriage frame component is moveable with respect to the maxillary tray. The prosthetic maxillary teeth components are individually moveable with respect to each other to achieve a desired dental positioning.

The application discloses an intelligent maxillary arch expander, which comprises a plurality of bases, automatic force adding devices arranged in the bases, dental side metal support pieces arranged on the two sides of the automatic force adding devices, and vertical adjusting mechanisms arranged on one side of the bases; universal connecting rods are arranged between the two bases; the vertical adjusting mechanism comprises a vertical guide rail, a connecting plate arranged on one side of the base and a positioning assembly arranged in the connecting plate; micro-implant nails are arranged on the two sides of the vertical guide rail, and the outer surface of the connecting plate is in sliding connection with the inner wall of the vertical guide rail. The application can automatically adjust the transverse arch expansion tension according to the oral structure of different patients and the different degrees of maxillary bone deformation, and can gradually adjust the position of the vertical dental side metal support piece, so that the orthodontic patient can gradually adapt to the adjustment process, and the process of correction is more comfortable. Compared with the traditional arch expander, the application is more intelligent, and the correction process is gradual.

The utility model discloses a digital Gothic bow device which comprises an upper jaw bow matched with the upper jaw of a patient and a lower jaw bow matched with the lower jaw of the patient, and the upper jaw bow and the lower jaw bow are detachably provided with an occlusion piece used for obtaining a closed impression or a tracing piece used for obtaining the median jaw position relation. At least one of the maxillary arch and the mandibular arch is adjusted, that is, the inside of the mouth of a patient is adjusted according to clinical practice, and a correct jaw plane is obtained. A jaw plane is used as a reference and matched with the occlusion pieces, the closed impression of a patient is obtained through closed occlusion of the patient, the patient occludes in a closed mode and is in a correct occlusion relation, the upper occlusion piece and the lower occlusion piece make close contact, the more accurate closed impression is obtained, and the edge of the occlusion relation position is more accurately shaped. And by matching with a tracing piece, the median jaw position relationship of the patient is accurately obtained, the problem of equally dividing the occlusion gap according to personal experience is solved, and the jaw position relationship better conforms to the actual occlusion condition of the patient.

This invention relates to the field of oral medical diagnostic and identification technology, and provides a decision-making method and system for maxillary arch expansion diagnosis and expander selection. The method includes: S1: acquiring and verifying multiple mandatory parameters such as dentition stage, patient age, transverse width of maxillary and mandibular teeth, transverse width of maxillary and mandibular skeletal structure, bone or tooth expansion requirements, and midpalatal suture stage; S2: performing anchorage determination based on dentition type to obtain anchorage status; S3: inputting the structured parameter set into a hierarchical decision tree algorithm, using whether the bone or tooth expansion requirements have reached a preset activation threshold as the initial judgment condition, matching decision branches layer by layer according to a preset priority order, and arbitrating according to the anchorage safety priority rule when multiple candidate schemes conflict, outputting a maxillary arch expansion scheme; S4: outputting the maxillary arch expansion scheme and its corresponding judgment basis. This solves the problems of subjective judgment of midpalatal suture maturity, inaccurate estimation of skeletal and dental expansion amounts, and lack of a unified standard for assessing anchorage conditions at different dentition stages.

A method for determining whether a tooth is correctly shaped and oriented to avoid interfering with another tooth using virtual articulation. The method includes a) receiving, by a computing device, data indicative of a virtual dentition of an oral cavity of a patient, the data indicative of the virtual dentition including data indicative of at least one of a virtual mandibular arch representing a mandibular arch of the patient or a virtual maxillary arch representing a maxillary arch of the patient; b) receiving data indicative of a selected point on the virtual dentition of the oral cavity; and c) determining a tangent vector indicative of a direction of motion of the selected point, and determining whether an orientation of a tooth of the virtual dentition or a shape of the tooth is correctly shaped and oriented based on the determined tangent vector, wherein the tangent vector is based on an axis of rotation of the virtual mandibular arch.

The application provides a double auxiliary positioning device for micro-implant assisted rapid expansion of upper jaw and a manufacturing method of the upper jaw rapid expander, the auxiliary positioning device comprises a first positioning device and a second positioning device for positioning an implant fixed base and a screw expander respectively; when the upper jaw rapid expander is assembled, the screw expander is clamped and fixed on the base in the best installation position; and a metal ring is fixed on the positioning column, the screw expander is connected with the ring through a steel wire, the metal ring fixed on the positioning column and the steel wire are welded and fixed, and the metal ring serves as the implant fixed base. The positioning column and the positioning base provide positioning for the implant and the screw expander respectively, so that the installation position of the finally formed upper jaw rapid expander in the mouth is more accurate.