45 results about "Occlusal contact" patented technology

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 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.

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.

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.

Disclosed is a method of digitally designing a dental component for a patient, wherein the method comprises: - 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.

An apparatus for measuring a dental occlusion includes: a position sensor (30) for detecting a position and posture of a lower jaw (12) relative to an upper jaw (11) and; an arithmetic circuit (31) for computing a posture relative to a translation distance in a state of occlusal contact. The computation is derived from the position and posture of the lower jaw (12) relative to the upper jaw (11) detected by the position sensor (30). The apparatus also includes a display monitor (32) for displaying the posture relative to the translation distance computed by the arithmetic circuit (31).

Methods of representing user edits or modifications of a treatment plan for a dental apparatus (e.g., one or a series of aligners) by managing an original clinical data set and a set of modifications of the clinical data set. Also described herein are methods of displaying, condensing, storing and reconstructing collision regions between two or more teeth.

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 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 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 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.