45 results about "Occlusal contact" patented technology

Occlusal contact between upper and lower virtual three-dimensional teeth of a patient when the upper and lower arches are in an occlused condition are determined and displayed to the user on a user interface of a general purpose computing device. Various techniques for determining occlusal contacts are described. The areas where occlusal contact occurs is displayed on the user interface in a readily perceptible manner, such as by showing the occlusal contacts in green. If the proposed set-up would result in a interpenetration of teeth in opposing arches, such locations of interpenetration are illustrated in a contrasting color or shading (e.g., red). The ability to calculate distances and display occlusal contacts in a proposed set-up assists the user in planning treatment for the patient. The process can be extended to interproximal contact detection as well. The concepts also apply to dental prosthetics, such as crowns, fillings and dentures.

A combination set (FIG. 1, A,B), at least in a medium size or different sizes, includes complete arched denture teeth units (1), (2) preformed without denture base, for setting up denture teeth instantly and adjustable in a full balanced articulation during custom denture work. The set(s) is composed of a complete upper (1) and separate complementary complete lower (2) arched denture teeth unit, each including anterior and posterior denture teeth inter-connected either in a complete (A) or under-extended complete (B) tooth arch at least in an oval form. Each of the units includes a total unitary inter-occlusal bite plane preformed in a corresponding centric occlusion and full balanced articulation. In order to prevent to setting-up denture teeth, one by one in the centric and full balanced articulation, as regularly, hereto the unitary inter-occlusal bite plane is pre-set according to interconnected anterior and posterior denture teeth. While the posterior denture teeth are formed cuspless spheroellipsoidal, conforming a 4 inch (11 cm.) radius, thereby pre-set either in a planar or anterio-posterior or curved sphero-ellipsoidal arrangement including a free centric inter-occlusal contact (FIG. 2) either full (C, 5) or partly (D,6) and a free eccentric bi-lateral balanced articular contact. Having the last molar posterior denture teeth either broader or not than regularly and pre-set without tongue interference to ascertain individually the balanced articular contact. Having the set(s) non-bendable from a durable tooth aesthetic material. The invention includes further a method A for preforming the set(s) from the material by providing a durable economised mould structure and yet a method B for setting up the set(s) in an instant and adjustable full balanced articulation with the provision of an auxiliary set of tools.

The invention provides a dot matrix type pressure distribution sensor based on a carbon nano tube and a preparation method thereof, which belongs to the technical field of sensing devices for dental clinical examination. The dot matrix type pressure distribution sensor comprises a first film substrate, a second film substrate, a group of first electrodes, a group of second electrodes, a first insulating layer and a second insulating layer, wherein the first and the second insulating layers are positioned between the first and the second film substrates; the first and the second film substrates are both polyester films; and the first electrodes, the second electrodes, first connecting wires, second connecting wires, first electrode terminals and second electrode terminals are all made of silver. The dot matrix type pressure distribution sensor has the advantages that the recoverability and the elasticity are outstanding, the occlusive service life reaches more than 300 times; the excellent clinical effects on tooth correction, false tooth implantation and health care are guaranteed; each imperceptible point on an end surface is guaranteed to be measured in the occlusal contact process of the upper and the lower teeth; and the processing steps are simple and not redundant, so not only can comprehensive reflection of the technical effects of the pressure distribution sensor be guaranteed, but the requirement of industrialized mass production can be satisfied.

Occlusal contact between upper and lower virtual three-dimensional teeth of a patient when the upper and lower arches are in an occlused condition are determined and displayed to the user on a user interface of a general purpose computing device. Various techniques for determining occlusal contacts are described. The areas where occlusal contact occurs is displayed on the user interface in a readily perceptible manner, such as by showing the occlusal contacts in green. If the proposed set-up would result in a interpenetration of teeth in opposing arches, such locations of interpenetration are illustrated in a contrasting color or shading (e.g., red). The ability to calculate distances and display occlusal contacts in a proposed set-up assists the user in planning treatment for the patient. The process can be extended to interproximal contact detection as well. The concepts also apply to dental prosthetics, such as crowns, fillings and dentures.

The invention discloses a system for capturing and visualizing mandibular three-dimensional motion. The system comprises a mandibular motion tracking device for designing and printing through a three-dimensional CT (Computed Tomography) model, at least two infrared cameras, and a host computer for analyzing shooting record data, wherein the mandibular motion tracking device comprises a rear end fixing device, a medium connecting rod, and three marking rods, wherein the three marking rods are arranged at the front end and are not co-planar; one end of each of the marking rods is connected to the medium connecting rod and while the other end of each of the marking rods is provided with a marker; the rear end fixing device is used for designing and printing through the three-dimensional CT model according to the external physical characteristics of lower teeth; the markers expose from the mouth and move together with the mandible; the host computer is used for recovering the overall motion of the mandible of a tested subject so as to determine whether the mandible motion and occlusal contacts are normal. The invention also provides a method for capturing and visualizing the mandibular three-dimensional motion. According to the technical scheme, the system and method have the advantages of low cost, high testing accuracy and the like, and is convenient to operate.

A combination set (FIG. 1, A,B), at least normalized in a medium size or different sizes and forms, includes complete arched artificial teeth units (1), (2) preformed without denture base, for setting up these units (1), (2) in a denture thereby instantly and adjustable in a full balanced articulation during custom denture work. The set(s) is composed of a complete upper (1) and separate complementary complete lower (2) arched artificial teeth unit, each including anterior and posterior artificial teeth inter-connected either in a complete (A) or under-extended complete (B) tooth arch at least in an oval form and restricted occluso-gingival height. Each of the units includes a total unitary inter-occlusal bite plane preformed in a corresponding centric occlusion and full balanced articulation. In order to prevent setting up as regularly denture teeth, one by one in the centric and full balanced articulation, hereto the unitary inter-occlusal bite plane is pre-formed according to interconnected styled artificial anterior and posterior teeth. Thereby the bite plane is formed cuspless sphero-ellipsoidal, conforming a 4 inch (11 cm.) radius, thereby to be set on an oblique planar sphero-ellipsoidal bite occlusal level including a free centric inter-occlusal contact (FIG. 2) either full (C,5) or partly (D,6) and a free eccentric bi-lateral balanced articular contact. Having the last molar posterior artificial teeth either broader or not than regularly and pre-formed without tongue interference to ascertain individually the balanced articular contact. Further the set(s) is non-bendable from a durable tooth aesthetic material.

An occlusal state correction -supporting apparatus, a program therefor, and a recording medium thereof are provided, which can generate necessary, effective information in order to complete the shape of teeth excellently bitten. A shape-extracting means 10 extracts and stores shaped data of an upper jaw and a lower jaw. A position-extracting means 20 extracts and stores absolute coordinate data of reference points. A condition setting and distance-computing means 30 computes the distance between a upper jaw model 100 and a lower jaw model 200 while gradually bringing them close in a perpendicular direction. The condition setting and distance-computing means 30 also sets a condition of occlusal contact point, executes such approach movement again, and computes the distance. A correction area and amount-determining means 40 obtains information through a operator's operation, which indicates that desired occlusal state has been obtained, and determines the correction area and the correction-amount based on the occlusal state of the upper jaw and the lower jaw at that time.

A method and apparatus for performing simulation display of the three-dimensional shapes and occlusal contact region of the upper and lower tooth rows at a high speed. A jaw movement sensor fits an examinee, and data on jaw movement of the examinee is acquired. An impression plate including a rigid flat plate having a top surface and a bottom surface each coated with an impression material inserted between the examinee's upper and lower tooth rows to which the jaw movement sensor is fitted, and the examinee performs a temporary occlusion. Impressions left on the impression material and a gauge mark provided on the rigid flat plate are measured by using a three-dimensional measuring instrument, whereby the three-dimensional shape data of the upper and lower tooth rows and gauge mark are acquired. Simulation display of movement of the aforementioned is performed at a time of temporary occlusion and jaw movement data.

One embodiment of the present disclosure is directed to a method used in the making of a dental restoration, which comprises the steps of determining a tooth flat at a patient's tooth, and evaluating the tooth flat to provide a geometric characteristic data of the first tooth flat. The characteristic data are used to provide a computer model of a jaw motion under occlusal contact between teeth in the patient's upper and lower jaws. In one embodiment, the method helps facilitating the preparation of dental restorations.

A method of digitally designing a dental component for a patient, wherein the method includes: obtaining a 3D representation of the patient's upper jaw; obtaining a 3D representation of the patient's lower jaw; obtaining at least a first 3D representation of a first bite configuration of the patient's jaws in a first occlusion and a second 3D representation of a second bite configuration of the patient's jaws in a second occlusion different from the first occlusion; digitally determining a occlusal contact movement of the patient's jaws relative to each other based on the at least first 3D representation, the second 3D representation and contact between the patient's upper jaw and lower jaw; and digitally designing the dental component based on the occlusal contact movement of the patient's jaw relative to each other.

The present invention relates to a process for the preparation of a full-ceramic dental restoration, comprising heat pressing of a tooth coloured pressing glass on a fully or partially supporting structure of yttria doped tetragonal zirconia (YTZP), comprised of yttria doped tetragonal zirconia ceramic having a grain size, as measured by the linear intercept method, of less than 0.6 μm, wherein the pressing glass has a thermal expansion coefficient (TEC) of between 9.0 and 11.0 μm / m.K (measured in the range of from 25 to 500° C.) and wherein the pressing glass has a pressing temperature of between 750 and 1200° C. In a further aspect, the invention relates to a full-ceramic dental restoration, comprising a fully or partially supporting structure of yttria doped tetragonal zirconia (YTZP) and a heat pressed tooth coloured pressing glass, which restoration is modeled to be in occlusal contact with opposing teeth and in mesio-distal contact with neighbouring teeth.

The invention relates to a metal-porcelain dental root crown and a method for manufacturing the same. The method includes steps of a, acquiring oral cavity data of a patient by the aid of reverse engineering before and after the teeth of the patient are ground; b, modeling porcelain dental crowns according to the oral cavity data before the teeth are ground; c, optimally designing occlusal contact points of porcelain dental crown models; d, building root crown three-dimensional models according to the steps b and c; e, importing the root crown three-dimensional models into control computers and manufacturing additives for a root crown. The metal-porcelain dental root crown and the method have the advantages that the oral cavity data of the patient are acquired before and after the teeth are ground, so that the porcelain dental crowns and the root crown can be modeled, the metal-porcelain dental root crown can be highly matched with the oral cavity of the patient, acting force applied by the patient to the oral cavity after the teeth are ground can be reduced to the greatest extent, and the purpose of recovering the mastication ability to the greatest extent can be achieved; the method can be applied to manufacturing the metal-porcelain dental root crown.

The invention discloses a dental mixed porcelain laminate veneer and belongs to the technical field of dental medical instruments. The dental mixed porcelain laminate veneer is characterized by comprising a tongue side porcelain laminate veneer and a lip side porcelain laminate veneer which cover a tooth body; the tongue side porcelain laminate veneer completely covers the tongue side of the toothbody; the lip side porcelain laminate veneer partially covers the lip side of the tooth body; a boundary line for butt joint and combination is formed between the tongue side porcelain laminate veneer and the lip side porcelain laminate veneer; the boundary line is positioned at the rear cutting end of the tongue side porcelain laminate veneer and avoids for 2mm from an occlusion contact area toform a shoulder of a round right angle or is positioned at 1 / 2 of the tooth body in an incisal edge lip and tongue direction; the tongue side porcelain laminate veneer is made of zirconium oxide or glass ceramic; and the lip side porcelain laminate veneer is made of feldspathic ceramic. The dental mixed porcelain laminate veneer disclosed by the invention has both mechanical and aesthetical properties, is applicable to occlusion reconstruction for a tooth with an occlusion space on the lip side and normal tongue colors and fixing and repairing of a tooth with the occlusion space on the lip side, and is good in practicability, in addition, more tooth body tissue can be maintained, tooth preparation on the tongue side is not needed, and the tooth preparation amount on the lip side is smallerthan 0.5mm or is not needed.

The invention relates to an adjusting guide making method. The method comprises following steps: an upper jaw 3D model and a lower jaw 3D model of a patient are obtained with a 3D scanning technology,and a 3D position relation of upper jaw dentition and lower jaw dentition of the patient in different states is obtained; an occlusion contact relation of the patient in different states is obtainedon the basis of the 3D position relation; lower jaw positions of the patient in different states are gathered in 3D software, a repair form of upper jaw anterior teeth is designed based on this, and adiagnostic model is formed; an ideal repair effect of the upper anterior teeth of the patient and a position relation of the upper anterior teeth and the lower jaw dentition in different states are obtained through 3D design on the basis of the 3D model; occlusal interference is avoided by adjusting incisal form of lower jaw anterior teeth, and an adjusting guide is designed by the 3D software onthe basis of the adjusted incisal form of lower jaw anterior teeth; and the diagnostic model and the adjusting guide are obtained through 3D printing. The adjusting guide made with the method can rapidly and accurately adjust and grind dental tissue.

The present invention discloses an adsorption force improving complete denture, and relates to the technical field of oral dental restoration, and the adsorption force improving complete denture includes a denture base and artificial teeth, the denture base and corresponding teeth root mucosa form tissue surface, the contact side of the denture base and lip and cheek, tongue mucosa is polished surface, maxillary and mandible denture artificial teeth form occlusal surface by occlusal contact, lip and cheek muscle inward-force and tongue muscle outward-force are in a balance state to maintain the horizontal stability of the complete denture, occlusal contact of the denture artificial teeth is broad and balanced to facilitate even distribution of occlusion pressure over support tissues and the stability of the denture, and load carried by the denture in function is transmitted to the support tissues through the tissue surface.

The present invention relates to the technical field of additive manufacturing of dental crowns, and in particular to a method for additive manufacturing of personalized dental crowns, comprising the following steps: a. Complete the acquisition of personalized dental crown data according to the needs of patients; b. According to step a Perform three-dimensional modeling on the data in step b; c, optimize the occlusal contact point of the personalized dental crown three-dimensional model in step b; d, import the optimized three-dimensional model data in step c into related equipment, and personalize the dental crown Do additive manufacturing. The rapid printing of dental crowns can be completed through additive manufacturing technology, especially the use of light-curing printers can shorten the printing time of dental crowns. At the same time, this method can meet the individual needs of dental crowns and avoid the discomfort caused by mass production of dental crowns. Thereby different patients are suitable for different dental crowns.

The invention relates to a dental transfer template arrangement with a transfer template and a prosthesis base, both of which are produced using the same CAD / CAM device in particular, wherein - both have a number of recesses for teeth, incisal and / or occlusal tooth regions fitting into the transfer template recesses and cervical tooth regions fitting into the prosthesis base recesses, and - each tooth is to be adhered into a prosthesis base recess. The invention is characterized in that - the transfer template (20) has an occlusal face (22) which corresponds to the occlusal plane and which is implemented as a reference for the presence of disruptive occlusal contacts such that - teeth regions (310) which protrude past said face (22) of the transfer template (20) can be polished for an even bite, and - the adhesive surface area of each tooth (31, 33, 35, 37) has a specified minimum threshold in the prosthesis base (10), in particular at least 10 mm, preferably at least 18 mm2, and particularly preferably at least 25 mm2, said threshold being stored in particular in the CAD software of the CAD / CAM device in order to produce the prosthesis base.

The invention provides an abutment correction attachment for reducing extended jaw teeth before oral implant restoration. The abutment correction attachment includes a telescope crown, a solid cushionand a central penetrating partition. The telescope crown is a cylindrical telescope crown. The central penetrating partition is arranged in the telescope crown, and the central penetrating partitionis arranged perpendicular to the axis of the telescope crown. The central penetrating partition separates the telescope crown into an upper telescope part and a lower telescope part. The solid cushionis nested in the upper part of the telescope. The top surface of the solid cushion forms an occlusal surface, and the lower part of the telescope covers a healing abutment. The abutment correction attachment for reducing extended jaw teeth before oral implant restoration can have occlusal contact with the jaw teeth to achieve the clinical effect of reducing the jaw teeth. For some cases that theprosthesis space is insufficient due to long period of tooth loss and extended jaw teeth, the correction attachment can be used to provide a certain occlusion space for later implant restoration to finally obtain a good occlusion relationship.

The invention relates to a tooth replacement comprising at least one posterior tooth having a mesial contact surface, a distal contact surface, and an occlusal surface. The occlusal surfaces comprises a least one buccal cusp having a buccal cusp tip, a lingual cusp having a lingual cusp tip, a central fissure which has at least one tooth pit and passes through the occlusal surface in the mesiodistal direction between the two cusps, a first gradient which slopes downward from the buccal cusp tip in the direction of the central fissure, and a second gradient which slopes downward from the lingual cusp tip in the direction of the central fissure.; The tooth replacement according to the invention is characterized in that the mesial contact surface, the distal contact surface and / or the occlusal contact surface comprise expansion spaces that have been incorporated in a targeted manner to obtain a dynamic occlusal guidance.

The invention discloses a system for capturing and visualizing mandibular three-dimensional motion. The system comprises a mandibular motion tracking device for designing and printing through a three-dimensional CT (Computed Tomography) model, at least two infrared cameras, and a host computer for analyzing shooting record data, wherein the mandibular motion tracking device comprises a rear end fixing device, a medium connecting rod, and three marking rods, wherein the three marking rods are arranged at the front end and are not co-planar; one end of each of the marking rods is connected to the medium connecting rod and while the other end of each of the marking rods is provided with a marker; the rear end fixing device is used for designing and printing through the three-dimensional CT model according to the external physical characteristics of lower teeth; the markers expose from the mouth and move together with the mandible; the host computer is used for recovering the overall motion of the mandible of a tested subject so as to determine whether the mandible motion and occlusal contacts are normal. The invention also provides a method for capturing and visualizing the mandibular three-dimensional motion. According to the technical scheme, the system and method have the advantages of low cost, high testing accuracy and the like, and is convenient to operate.

The invention relates to a laser-based method for non-deformation quantitatively adjusting the abrasion resistance of an artificial dental crown occlusal surface, which comprises the following steps of: 1) preparing a plurality of micropores on the artificial dental crown occlusal surface by using laser; 2) coating liquid photosensitive resins on the surface of the micropores; 3) using an ultrasonic vibration head to abut against the area outside the micropores so as to completely fill all the micropore cavities with the liquid photosensitive resins; 4) irradiating a micropore area by using aphotosensitive curing lamp, and removing redundant impurities formed by the liquid photosensitive resins outside the micropores after the liquid photosensitive resins are preliminarily cured; 5) irradiating with the photosensitive curing lamp again until all the liquid photosensitive resins are completely cured; and 6) polishing the surface. According to the laser-based method for non-deformationquantitatively adjusting the abrasion resistance of the artificial dental crown occlusal surface, on the premise of not changing the existing occlusal contact of the artificial dental crown, the abrasion resistance of the occlusal surface of the dental crown can be quickly and quantitatively adjusted, so that the occlusal surface of the dental crown is adapted to the individual jaw teeth, and thebonding strength between the reinforcing material and the body material of the occlusal surface of the dental crown is greatly improved.

The invention discloses an implant false tooth with a spring damper telescopic base table. The implant false tooth comprises an implant body, a lower telescopic base table, an upper telescopic base table, a fixing screw, a damper, a base table cover and an implant dental crown. The implant false tooth with the spring damper telescopic base table provided by the invention has the beneficial effectsthat the telescopic base table overcomes the defects of a traditional base table and plays a role in buffering occlusal force. Damping values of natural teeth and implants in the mouth of a patient can be measured clinically, a proper damper is selected, and the natural teeth are simulated to the maximum extent, so that optimal occlusion contact and occlusion force are achieved.

The invention belongs to the field of oral disease treatment, in particular relates to a biteplate for improving a trigeminal noxious inhibitory-stress relief system and a using method thereof. The biteplate consists of a palate plate and a lower incisor guide plane, wherein the palate plate is a semi-circular plate in a shape matched with an upper jaw structure; the arc edge of the palate plate extends to the distal of the first or the second premolar of the upper jaw; grooves are reserved at two sides of the palate plate; the grooves extend into jaw side undercuts of the premolar of the upper jaw; and the lower incisor guide plane is of a flat-front thick-rear strip shape, and is positioned in the middle of the palate plate. The using method comprises the following steps: selecting upper and lower jaw denture models of a patient; transferring the bite relationship of the patient to a semi-adjustable or full-adjustable articulator according to a conventional method; manufacturing a primary model of the biteplate by using low-melting soft wax according to the upper jaw model of the patient; manufacturing the primary model of the biteplate by the soft wax into a resin finished product through embedding, injection molding and heating methods; and trying the manufactured biteplate in the mouth of the patient, and adjusting the thickness of the lower incisor guide plane to ensure that only the lower incisor teeth in the lower jaw teeth are contacted with the lower incisor guide plane and other teeth do not have bite contact when the patient bites in each direction. The biteplate cannot cause upper incisor inclined towards the lip when excellent retention is achieved.

The invention provides a descending linkage self-adjusting annular cutting structure. The descending linkage self-adjusting annular cutting structure comprises an orientation shaft, a telescopic sleeve ring, a truss plate, longitudinal rods, a positioning disc, driving sliding wires, bulges, driven sliding wires, connection openings, driving rods, cutting heads, first driven parts, pressing grooves and second driven parts, wherein the inside of the positioning disc is movably connected with the longitudinal rods; the upper end and the lower end of each longitudinal rod are fixedly connected with a first driven part and a cutting head; when the driven sliding wires are engaged with the driving sliding wires, the overall descending distance of the telescopic sleeve ring is less than the descending distance of the longitudinal rods when the first driven parts are in contact with the pressing grooves. According to the descending linkage self-adjusting annular cutting structure, the overalltelescopic sleeve ring is controlled to move up and down through occlusal contact between threaded sliding wires, so that shrinkage of each group of longitudinal rods is controlled; when the device is used, the device is more flexible and convenient to control; meanwhile, the device is also capable of carrying out operation procedure of reciprocating up and down; the device is more practical; thedevice does not need to be manually controlled and is capable of automatically drawing and withdrawing cutters.