208results about "Dental articulators" patented technology

Disclosed is a method for monitoring changes in jaw motion over time. A primary relative jaw motion data set and a secondary relative jaw motion data set are obtained using an intraoral scanner. The method further comprises a computer implemented method, where the computer implemented method comprises the steps of, receiving the primary relative jaw motion data set and the secondary relative jaw motion data set; obtaining a model class representing desired and / or regularising properties of articulation; obtaining a primary model parameters by fitting the primary relative jaw motion data set to the model class; obtaining a secondary model parameters by fitting the secondary relative jaw motion data set to the model class; determining monitoring information based on comparing the primary model parameters with the secondary model parameters, and displaying the monitoring information.

The invention provides a digital complete denture manufacturing method which comprises the following steps: designing a personalized tooth test tray with exposed anterior teeth on the basis of surface scanning and an impression, then wearing the personalized tooth test tray to manufacture a closed impression, determining a vertical and horizontal jaw position relationship, and then precisely machining a complete denture by adopting a digital method. By adopting the method provided by the invention, the patient can wear a pair of closely-attached and comfortable complete dentures when seeing a doctor for the third time. The whole-process digital processing method is adopted, clinical operation is more standard and consistent, the comfort level of a patient is improved, and the processing time and difficulty are greatly reduced.

Embodiments of the invention can accommodate multiple variations and goals of impressions, including but not limited to dental and orthodontic models. To adapt embodiments of the invention for multiple purposes, and to standardize the process, embodiments include a housing that allows for impressions to be suspended and / or sealed in the housing so that modelling material can pour up the impression, form a model base or some other type of design, and / or articulate the models if desired, without the need for or with reduced need for trimming and substantial reduction of time and use of modelling material (hereafter “MM”) like gypsum, stone, plaster, resin, etc. Embodiments allow models to be created and formed and articulated if desired. Professionals may pour up impressions, form base models, and, optionally, articulate models, allowing less waste, material, and use of time than traditional and current methods.

The invention relates to the technical field of dental medicine, in particular to a dental arch model occlusion relation calculation method and device, equipment and a storage medium. The method comprises the following steps: acquiring a dental three-dimensional model of a patient; executing gravity settling positioning operation, fixing the upper jaw model as a static rigid body, releasing translation and rotation freedom degrees of the lower jaw model, and applying gravity action in the normal direction of the occlusal surface; micro-vibration self-adaptive optimization operation is executed, periodic disturbing force dominated by the normal direction is applied to the lower jaw model, and the teeth are driven to generate tangential slippage behaviors along the occlusal surface; identifying an occlusal contact point set, calculating a normal stress value of each contact point, and iteratively adjusting a pose parameter of the lower jaw model; and based on the optimized mandible pose, simulating a mandible motion path, identifying interference points through a continuous collision detection algorithm, and calling back the contact mechanical equilibrium optimization operation to perform closed-loop correction so as to determine the occlusal relationship. According to the method, the occlusion alignment relation better meeting the biomechanics and occlusion function requirements is calculated in an automatic auxiliary mode.

A maxilla holder includes a base plate and a connecting member. One end of the connecting member is connected with the base plate which extends along a pre-designed occlusal plane while the other end of the connecting member includes at least two supporting portions. With the supporting portions abutting against the cranium, the base plate is positioned so that the maxilla is located in a pre-planned position once it is moved onto the base plate.

To provide a dental surveyor that enables a user to quickly perform surveying calibration and a surveying method of the dental surveyor.SOLUTION: A shaft center seat 12, a first surveying arm 13, and a second surveying arm 14 are pivotable with respect to one another. The second surveying arm includes a surveyor rod 15. The surveyor rod includes a surveying needle 151 for surveying a denture mold 30. A surveyor table includes a clamp table 21 and an adjustment platform 22. The surveyor table is placed on a platform. The clamp table is used to clamp the denture mold. Angle and direction of the clamp table are changed by the adjustment platform. Three adjustment screws O, P, Q are fixed onto the adjustment platform. By advancement and retreat of the adjustment screws, a height of a corresponding portion of the clamp table is changed, an effect of three-point positioning adjustment on the denture mold is exhibited and the angle of the denture mold is accurately adjusted.SELECTED DRAWING: Figure 6

The invention relates to a method for determining whether a tooth is correctly shaped and oriented to avoid interference with another tooth using virtual articulation. The method comprises a) receiving data indicative of a virtual dentition of an oral cavity of a patient by a computing device, 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 indicating a selected point on the virtual dentition of the oral cavity; and c) determining a tangent vector indicating a direction of motion of the selected point and determining whether the orientation of a tooth of the virtual dentition or the shape of the tooth is correctly shaped and oriented based on the determined tangent vector, wherein the tangent vector is based on a rotational axis of the virtual mandibular arch.

A test bench (100) for mechanical testing of a subperiosteal implant (810), wherein the subperiosteal implant (810) is provided with at least one superstructure, the test bench (100) comprising: a machine frame (200), a mandibular model (800) to which a subperiosteal implant (810) is fixable, and at least one force measuring unit (700) that is connected at one end to a load-bearing plate (710) fixed to the machine frame (200) and can be releasably connected at its other end to at least one test location (P) of the subperiosteal implant (810) for force measurement. The test bench (100) is characterised by further comprising a first shaft (613) that is rotatably connected to the machine frame (200) via at least a first bearing (612) such that it defines a first rotational axis (614), a second shaft (623) that is rotatably connected to the machine frame (200) via at least a second bearing (622) such that it defines a second rotational axis (624), wherein the mandibular model (800) is attached to the first shaft (613) and to the second shaft (623) at two, first and second, mandible head portions (801, 802) thereof for rotation about the first rotational axis (614) and the second rotational axis (624), at least one control and command unit (300) that is mounted on the machine frame (200) and has at least two, first and second, pneumatic cylinders (400, 500) provided with a first and a second piston rod (410, 510), wherein the at least two, first and second, pneumatic cylinders (400, 500) are arranged above the mandibular model (800), and wherein the control and command unit (300) is in operative connection with the first and second pneumatic cylinders (400, 500) such that it is able to exert a force of a given magnitude on the first and second piston rods (410, 510) to move them in a vertical direction, at least two, first and second, displacement measuring units (460, 560) mounted on the first and second pneumatic cylinders (400, 500) such that they are able to measure the vertical-direction displacement of the first and second piston rods (410, 510) of the first and second pneumatic cylinders (400, 500); at least two, first and second, resilient members (450, 550) with a strap-like configuration that are connected to the respective lower ends of each of the first and second piston rods (410, 510) by means of a first and a second connection member (430, 530) such that the first and second resilient members (450, 550) support the mandibular model (800) by forming a loop around both sides thereof; wherein the at least one, first and second resilient members (450, 550) are operatively connected to the control and command unit (300) by way of being connected to the first and second piston rods (410, 510), and thus they are able to apply a tensile load to the mandibular model (800). The method according to the invention is carried out applying a system according to the invention.

The invention belongs to a tooth deformity quantification method, and provides a three-dimensional tooth jaw model deep coverage deformity quantification method and a related device aiming at the problems that a distance index measurement method for representing an upper and lower jaw coverage relation in an existing three-dimensional tooth jaw model is time-consuming, the measurement precision is difficult to guarantee, and the method excessively depends on subjective judgment of a doctor. Sequentially obtaining a projection point set in the occlusal surface direction of the tooth area, a central point of the projection point set in the occlusal surface direction of each tooth area and a global central point of the tooth model, then calculating a rotation amount based on the data, performing quaternion transformation, obtaining an identification line capable of representing a crest cutting position of each tooth crown, fitting the identification line of each tooth crown, and obtaining a crest cutting position of each tooth crown; the method comprises the following steps: obtaining two tooth crest cutting distribution curves, performing alignment processing on the two tooth crest cutting distribution curves, obtaining a matching point set through resampling, and obtaining a tooth jaw covering horizontal spacing according to the matching point set. The problem of precision loss in a traditional transformation method is effectively avoided, and the precision of tooth pose adjustment is ensured.

The utility model provides a simple column type jaw movement jaw frame which comprises an upper jaw support used for being connected with an upper tooth jaw model, an upper supporting column is arranged on the upper jaw support, and the upper supporting column extends by a preset length in the vertical direction; the lower jaw support is used for being connected with a lower tooth jaw model, a lower supporting column is arranged on the lower jaw support, and the lower supporting column extends by a preset length in the vertical direction; the end, away from the upper jaw support, of the upper supporting column and the end, away from the lower jaw support, of the lower supporting column are provided with separable butt joint structures. The separable butt joint structure comprises an inclined convex face and an inclined concave face which are matched with each other, and the inclined convex face can slide along the inclined concave face. The problem that in the prior art, when an upper tooth jaw model and a lower tooth jaw model conduct jaw movement, an upper column type structure support and a lower column type structure support interfere with each other, and consequently use is inconvenient is solved.

This document describes a method for dental imaging. The method involves receiving data that describes at least one three-dimensional digital dental element. This at least one three-dimensional digital dental element comprises a defined position relative to a dental articulator.The procedure further comprises repeatedly: receiving the optical image data describing the dental articulator from an optical sensor; receiving the localization data in response to the input of the optical image data into a localization module; performing a calculation that includes calculating at least one three-dimensional object aligned with the localization data describing the dental articulator, using the defined position of the at least one three-dimensional digital dental element and the localization data describing the dental articulator; and providing a representation of the at least one three-dimensional object.

The utility model discloses a false tooth occlusal frame, and belongs to the technical field of dental tools. The false tooth occlusal frame comprises a support internally provided with a cavity, the support is connected with an adjusting plate through a rotating shaft, the false tooth occlusal frame further comprises a lower occlusal plate and an upper occlusal plate, the lower occlusal plate and the upper occlusal plate are connected to the support and the adjusting plate through installation pieces respectively, and the top face of the lower occlusal plate faces the bottom face of the upper occlusal plate; the adjusting part is arranged in the cavity of the support, and the adjusting part is used for driving the lower biteplate to move up and down; through cooperative use of the spring, the inclined block, the mounting block and the pressing plate, the lower biteplate and the upper biteplate can be conveniently and independently disassembled and assembled, and the disassembly and assembly operation is rapid and convenient, so that a worker can conveniently clean and maintain the lower biteplate and the upper biteplate, and convenience is brought to the maintenance work of the worker.

The application discloses a Gothic arch retaining device for natural dentition and a manufacturing method of the device. The device comprises: a maxillary retaining splint comprising an inner side and an outer side formed around the maxillary natural dentition, the maxillary retaining splint further comprising a plurality of retaining connecting parts extended from the inner side and located in the same horizontal plane; a mandibular retaining splint comprising an inner side and an outer side formed around the mandibular natural dentition, the mandibular retaining splint further comprising a plurality of retaining connecting parts extended from the inner side and located in the same horizontal plane; a maxillary Gothic arch having a plurality of retaining pins for connecting with the plurality of retaining connecting parts of the maxillary retaining splint to determine the position of the maxillary Gothic arch; and a mandibular Gothic arch having a plurality of retaining pins for connecting with the plurality of retaining connecting parts of the mandibular retaining splint to determine the position of the mandibular Gothic arch. The Gothic arch can be installed, fixed and used on the natural dentition.

A method for locating the condylar points (2) of a patient (1), comprising - a step of obtaining (S1) a bi-condylar axis (3); - a step of recording (S2) left-hand and right-hand mandibular kinematics, respectively, when the patient makes at least one left-hand (12) and at least one right-hand (11) lateral movement, respectively, of their mandible (5), a step of determining (S3) a left-hand condylar point and a right-hand condylar point, respectively, on the axis (3), by determining a point minimizing a measurement of movement in the left-hand and right-hand mandibular kinematics, respectively.

The invention provides a jaw pad model determination method and device, computing equipment and a storage medium. The jaw pad model determination method comprises the steps that first tooth model data and first jaw pad model data are acquired; according to the first tooth model data, determining a first position of a key point of a target tooth to be added with a jaw pad in the first correction step; the key point is used for indicating the position of the jaw pad to be added on the occlusal surface of the target tooth; according to the second tooth model data, determining a second position of the key point of the target tooth to be added with the jaw pad in the second correction step; determining movement information of each key point according to the first position of each key point and the second position of each key point; and determining a second jaw pad model corresponding to the target tooth in the second correction step according to at least one of the movement information of each key point, the first jaw pad model data and the corresponding occlusion relationship of the target tooth in the second correction step. According to the scheme, the corresponding jaw pad model can be adaptively generated for each patient.

The application provides a combined device of an accessory and a shell-shaped appliance and a manufacturing method thereof, the accessory comprises a tooth accessory fixed on a tooth surface and a dental model accessory fixed on a dental model, the tooth accessory is smaller than the dental model accessory, the occlusal surface of the dental model accessory forms different degrees of occlusal contact with the opposite teeth, so that the shell-shaped appliance generated based on the dental model with the dental model accessory fixed thereon can enhance the seating by using the occlusal force, there is a gap between the occlusal surface of the dental model accessory and the introduction surface of the tooth accessory, so that there is a gap between the accessory cavity of the shell-shaped appliance and the tooth accessory, the appliance has a larger surface area and better elastic performance in the accessory part, which is beneficial to enhance the seating and express the correction force, in addition, the occlusal surface of the dental model accessory can also be designed to have the functions of lifting the occlusion and leading the lower jaw.

The invention provides an oral cavity positioning method and device based on a one-time printing calibration technology and a terminal. A first positioning mark printed on a first positioning device arranged on an occlusion support and a second positioning mark printed on a second positioning device arranged on a planting mobile phone are identified; and determining a spatial position relationship between the gum of the patient and the implant handpiece, so that mutual positioning between the gum of the patient and the implant handpiece is carried out. Through the printed first positioning mark and the second positioning mark, the positioning operation becomes simpler, and more accurate positioning is realized.

Disclosed is a method for digitally designing a denture for a patient, where the denture comprises a plurality of denture teeth, where designing the denture comprises transforming, such as relocating, repositioning and / or rotating, denture teeth of the denture, and where the denture teeth are grouped in at least two blocks where each block comprises at least two denture teeth, wherein the method comprises: - obtaining a 3D scan of the upper jaw and lower jaw of the patient; - obtaining a digital 3D arrangement of the denture teeth, where the denture teeth are pre-set in occlusion; - digitally arranging the 3D scan of the upper jaw and lower jaw relative to the 3D arrangement of the denture teeth; - digitally transforming at least one denture tooth based on input from a user; where at least one design rule is enforced that affect one or more, but not all of the blocks, when the at least one denture tooth is transformed.

The present application provides a kind of dentition correction mouthpiece and its manufacturing method, which can be used for dental correction.The manufacturing method needs to obtain the tooth position configuration map of upper jaw and lower jaw, read and display the tooth position configuration map by dental software, connect the multiple fossae of upper jaw teeth into the arc line of upper occlusal line, connect the multiple cusps of lower jaw teeth into the arc line of lower occlusal line, generate a correction arc line through the upper and lower occlusal lines, then generate the upper jaw correction slot and the lower jaw correction slot corresponding to the cuspid-fossa, and finally generate the upper and lower jaw corresponding parts of the dentition correction mouthpiece to correct the problem of misaligned dentition of dental patients.

The utility model relates to the technical field of oral occlusion positioners, and discloses an occlusion positioner which comprises an upper jaw positioning assembly, the upper jaw positioning assembly comprises an upper jaw positioning piece, a lower jaw positioning assembly is arranged on one side of the upper jaw positioning piece, and the lower jaw positioning assembly comprises a lower jaw positioning piece. An adjusting assembly is arranged on the end face of the side, close to the lower jaw positioning piece, of the upper jaw positioning piece and comprises a mold closing piece arranged on the end face of the side, close to the lower jaw positioning piece, of the upper jaw positioning piece in an attached mode, a positioning assembly is connected between the adjusting assembly and the lower jaw positioning assembly, and the positioning assembly comprises a central positioning screw. The occlusion positioner well solves the problems of muscle de-programming, bad induction of tooth tip inclined planes, induction of maxillofacial deflection, insufficient vertical distance between the jaws and the like, and can find out the fixed position of the jaw position in the positive axis even if the occlusion of a patient is deflected and the positions of the upper jaw and the lower jaw are deflected; during occlusal model taking, the occlusal positioner can better assist doctors in positioning and facilitate recording of model taking data.

The present invention discloses a disc-assisted repositioning bite plate for treating temporomandibular joint disorder of anterior disc displacement type and a manufacturing method thereof, and relates to the field of oral medical devices. The patient's oral and maxillary system data information is imported into the mimics software to complete the three-dimensional reconstruction of the upper and lower jaws and the occlusal relationship; the three-dimensional data is imported into the proplan software to adjust the mandibular position so that the condyle is displaced downwardly and counterclockwise in the fossa; a bracket is printed to record the new upper and lower jaw occlusal relationship after the mandibular adjustment; and a disc-assisted repositioning bite plate is manufactured. The present invention utilizes the principle of space giving way to increase the vertical distance in the joint space to make room for the repositioning of the disc, and the disc is pulled backwards by displacing the condyle backwards and downwards in conjunction with counterclockwise rotation, which is conducive to pulling the disc to reposition, relaxes the posterior joint area that has been in a tense state for a long time, stretches the lateral pterygoid muscle and the anteriorly displaced disc, and stretches the wrinkled disc.

A computer-implemented method for generating a digital model of an individual intraoral component from a digital model of a patient's dentition obtains a 3-D digital mesh model of the patient's dentition and performs automatic tooth component segmentation operation on the obtained mesh model. Automated segmentation results display. Interactive segmentation of the automated segmentation results is performed according to an operator instruction. Segmentation results are displayed and stored.

The present invention relates to a fixator (10) for fixing a first tooth model (52) and a second tooth model (54), wherein the fixator (10) has a first fixator-side guide element (28) and a second fixator-side guide element (30), both of which extend in a longitudinal direction (12) of the fixator (10), wherein the first fixator-side guide element (28) can be coupled to a first model-side guide element (62) of the first tooth model (52) and the second fixator-side guide element (30) can be coupled to a second model-side guide element (64) of the second tooth model (54), wherein the first fixator-side guide element (28) is configured to guide the first model-side guide element (62) in the longitudinal direction (12) when the first fixator-side guide element (28) is coupled to the first model-side guide element (62), and wherein the second fixator-side guide element (30) is configured toto guide the second model-side guide element (64) in the longitudinal direction (12) when the second fixator-side guide element (30) is coupled to the second model-side guide element (64). Furthermore, the present invention relates to a system (50). Furthermore, the present invention relates to a method (100) for fixing a first dental model (52) and a second dental model (54) by means of at least one fixator (10).

A system and method are web-based applications for creating and managing 3D models of orthodontic laboratory prescriptions for use in dental clinics or laboratories. The method includes automatically detecting and removing any appliances included within a 3D image file. After the appliance has been removed, the system automatically replaces the removed image data with new image data to create a clean second 3D image, which is calculated to simulate the tooth surface positioned beneath the removed appliance. The method can also automatically refine the second 3D image of the patient's teeth or remove any artifacts remaining after the creation of the second 3D image. The second 3D image can then be used as the basis for modifying the patient's orthodontic or dental prescription.

The invention belongs to the technical field of oral occlusion relation preparation, and particularly relates to an occlusion quantitative lifting auxiliary tool and an occlusion relation preparation method. The problems that a direct preparation method cannot quantitatively lift occlusion and depends on patient training and doctor experience are accurately solved, accurate control over the vertical distance is achieved through standardized structural design, recording errors caused by unstable occlusion height and material deformation are thoroughly avoided, and the manufacturing precision of oral cavity devices such as an occlusal plate is remarkably improved. Through the modular design of the replaceable occlusion part, the lower jaw guide sliding block, the upper jaw guide sliding block and the like, all occlusion relation making scenes where the vertical distance of a tooth jaw patient needs to be increased are matched, multiple horizontal relations such as the muscle position, the stable position and the protraction position are covered, the defects that an existing tool is single in function and only suitable for snore resisting equipment making are overcome, and the tool is suitable for being used for making snore resisting equipment. And meanwhile, materials such as traditional wax sheets and occlusion recording silicon rubber are compatible, and the modern mode of direct preparation of a digital optical scanner is adopted, so that different clinical operation requirements are met.

A maxilla holder includes a base plate and a connecting member. One end of the connecting member is connected with the base plate which extends along a pre-designed occlusal plane while the other end of the connecting member includes at least two supporting portions. With the supporting portions abutting against the cranium, the base plate is positioned so that the maxilla is located in a pre-planned position once it is moved onto the base plate.

The present invention relates to an apparatus (1) for simulating the movements of the temporomandibular joint comprising a computer system (10) configured to generate data sets (D) representative of a movement of a person's jaw and a simulator device (60) configured to generate a simulation of the aforementioned movement, wherein the computer system (10) comprises a display device (12) configured to generate a computerized graphic representation of a movement trajectory of a reference point of the jaw, and a input device (14) configured to impart, through said display interface (12), a manual command to move at least one point pn (xn-yn, xn-zn, yn-zn) of said trajectory on at least one Cartesian axis (X-Y, X-Z, Y-Z).

The utility model discloses a soft tissue cutting guide plate which comprises a guide plate body and a scalpel. The guide plate body comprises a plate main body, a windowing hole is formed in the plate main body, and the outline range of the windowing hole is consistent with the range of soft tissue needing to be cut; a stopping assembly is arranged on the side face of the scalpel close to a scalpel tip, and the distance between the scalpel tip and the stopping assembly is the sum of the thickness of the windowing hole and the thickness of soft tissue needing to be cut. According to the soft tissue cutting guide plate provided by the utility model, through the structural matching design of the guide plate body and the scalpel, the range needing to be transplanted is determined according to a transplanting scheme, and the guide plate is used for accurately positioning the soft tissue cutting position and range; the transplantation guide plate is used for cutting soft tissue, and has the advantages of being accurate in positioning, accurate in cutting range and thickness, and capable of reducing injury and pain of a patient and obviously improving the transplantation success rate.

The invention relates to a method for producing a toothed ring model (100) intended for detachable arrangement on an articulation plate (300) of an articulator (1), as well as a corresponding toothed ring model (100) and an arrangement comprising such a toothed ring model (100). The gear ring model (100) is manufactured by 3D printing and comprises a model base plate (200) integrally molded onto it, wherein the model base plate (200) has a number of projections (320) with a bearing surface (325) in the form of a convex spherical sub-surface corresponding to the number of projections (320) provided on the upper side of the articulation plate (300), each with a bearing surface (325) in the form of a convex spherical sub-surface, and the recesses (220) on the model base plate (200) are designed such that, when arranged on the articulation plate (300), the manufactured gear ring model (100) rests exclusively on the bearing surfaces (225) in the form of a concave spherical sub-surface on the bearing surfaces (325) in the form of a convex spherical sub-surface on the articulation plate (300), and the model base plate (200) and articulation plate (300) are otherwise spaced apart from each other.