89 results about "Lower dentition" patented technology

Apparatuses, systems, and methods for treating oral functions are shown and described. An orthotic dental system for treating oral functions includes an upper dentition orthotic, a lower dentition orthotic, and an articulator system. The articulator system extends between the upper and lower dentition orthotics and can have at least one rigid connector pivotally coupled to the upper dentition orthotic and the lower dentition orthotic. A spacer can be positioned and configured to spatially separate the upper dentition orthotic and the lower dentition orthotic a desired minimum distance. The orthotic dental system can improve various types of oral functions.

A custom, sized and fitted, integrated oral appliance is provided to treat breathing obstruction and restriction in the upper airway during sleep. Several novel features are integrated in a single device, which includes mandible repositioning to open the airway, and tongue restraint to prevent airway blockage. This device is comprised of a built-in air conduit to bypass nasal restriction and airway occlusion. In operation, the appliance is positioned in the oral cavity to firmly grip the upper and lower dentition using customized unshaped trays. Appliance positioning advances the mandible to an adjustable predetermined position and simultaneously restrains the tongue using flexible bristles attached to a spring-loaded, tongue-restraint-ac (TRAC) component. A hollow air conduit, built into the TRAC, spans the area between the users' lips and soft palate. It facilitates the flow of self-heated, moisturized air directly to (and from) the oropharynx to bypass airway obstructions and/or nasal restrictions.

The invention discloses an automatic tooth arrangement method and an automatic tooth arrangement device, relating to the medical field of digital orthodontics, and solving the problem that the automatic tooth arrangement is poor in accuracy. The main technical scheme is as follows: the automatic tooth arrangement method comprises the following steps: acquiring three-dimensional data of dentition needing orthodontics and three-dimensional data of craniofacial jaw bone; selecting feature points on the three-dimensional data of the dentition and the three-dimensional data of the craniofacial jaw bone; constructing tooth arrangement planes and dental arch curves according to the selected feature points, wherein the tooth arrangement planes comprise a median sagittal plane, a horizontal plane and a tooth arrangement occlusal plane, and the dental arch curves comprise an upper jaw tooth arrangement curve and a lower jaw tooth arrangement curve; moving teeth in the three-dimensional data of the dentition according to the preset tooth positions, so that a target dentition after orthodontics is formed, and the preset tooth positions comprise the target upper and lower dentition sagittal position, the target upper and lower dentition vertical position, and the target upper jaw and lower jaw among-dentition position. The automatic tooth arrangement method and the automatic tooth arrangement device are mainly used for the tooth arrangement in the orthodontics.

The invention discloses a three-dimensional imaging and real-time modeling based oral rehabilitation method. The method includes the following steps: step one, utilizing a scanning device to rapidly obtain a facial model and dental model of a patient in real time, wherein the facial model is the color three-dimensional point cloud data of the mandibular part of the face when the patient grins, andthe dental model is the color three-dimensional dental point cloud data of the upper and lower dentitions in the mouth of the patient under an occlusal state. Thus, the color three-dimensional facialmodel and color three-dimensional full mouth dental model of the patient can be rapidly obtained in real time, and intraoral scanning and real-time modeling can be directly performed, so that workingefficiency can be enhanced; the oral environment of the patient can be simulated by registering the dental model in the mouth of the patient; through the rehabilitation design of the three-dimensional model of doctors for the patient, the patient can visually observe the simulation effects before and after dental rehabilitation, so that good communication between the doctors and the patient can be achieved; and based on the three-dimensional oral rehabilitation design, various disadvantages of two-dimensional DSD can be overcome, and oral digital design can be completed.

The invention relates to a complete dentition full denture finished product resin tooth, which comprises an upper denture, a lower denture, an upper dentition and a lower dentition, wherein the upper dentition is fixedly connected with the upper denture; the lower dentition is fixedly connected with the lower denture; and the upper dentition and the lower dentition are engaged with each other and are integral dentitions respectively. According to the complete dentition full denture finished product resin tooth, during arrangement of teeth and wearing, the upper dentition and the lower dentition are quickly and centrally engaged, so that the arrangement efficiency of the teeth is increased, the difference in tooth arrangement level of technicians is reduced, and the aims of guaranteeing wide close contact, reducing the clinical occlusal adjustment time and shortening the treatment time of patients are fulfilled. Each tooth is arranged according to an inclination angle in the tooth arrangement standard and positional relation of each dental cusp and an occlusal plane; the upper dentition and the lower dentition are matched teeth and are centrally engaged without error basically; the chair-side occlusal adjustment time of the full denture is reduced; the treatment time is shortened; and the comfort and the satisfaction of patients are improved.

The invention discloses a mandible movement track recording method, including the following steps: a, the rear end of a test marking rod is fixed at the mandible incisor part of a tester, the front end of the test marking rod is connected with a marker exposing port and moves along with the mandible; b, the movement track of the marker at the front end of the test marking rod is recorded by virtue of at least two infrared cameras provided with an infrared launching device, and movement track data is transmitted to a computer host to be analyzed and processed; c, the movement track of the marker is reconstructed in the computer, so as to correspondingly reflect three-dimensional track of mandible movement of the tester, and the recorded mandible movement three-dimensional track and calculated relevant parameters are respectively compared with mandible standard movement track and standard parameters which are stored by the system, so as to judge whether mandible movement and occlusion of upper and lower dentitions are normal or not. Besides, the invention also discloses a mandible movement track recording system.

Apparatus for reducing obstructive sleep apnea, snoring and/or nasal drainage. One apparatus includes an upper member fitting the interior and exterior surfaces of a user's upper dentition, and a lower member fitting similarly adjacent a user's lower dentition. The lower member includes eyeteeth extensions projecting away from the lower member. The upper member includes molar extensions projecting away from the upper member and toward the member molar regions so that when the user bites or clenches, the upper right and lower right extensions impinge on one another in substantially overlapping fashion, as do the upper left and lower left extensions. The upper and lower members have an anterior shape to form a gap sufficient for the user's tongue to extend into the gap, and each molar extension may include a magnet. Methods of using the apparatus and kits to reduce sleep apnea, snoring, and/or nasal drainage.

Apparatus for reducing obstructive sleep apnea, snoring and/or nasal drainage. One apparatus includes an upper member fitting the interior and exterior surfaces of a user's upper dentition, and a lower member fitting similarly adjacent a user's lower dentition. The lower member includes molar extensions projecting away from the lower member. The upper member includes upper molar extensions projecting away from the upper member and toward the lower molar extensions so that when the user bites or clenches, the upper right and lower right extensions impinge on one another in substantially overlapping fashion, as do the molar upper left and lower left extensions. The upper and lower members have an anterior shape to form a gap sufficient for the user's tongue to extend into the gap, and each molar extension may include a magnet. Methods of using the apparatus and kits to reduce sleep apnea, snoring, and/or nasal drainage.

A mandibular advancement appliance is described which is secured to a subject's dentition. The appliance may adjust a position of the subject's lower dentition relative to the upper dentition while maintaining a distance between the upper and lower dentition. The appliance may also allow for the free rotation of the lower dentition relative to the upper dentition for increased comfort. Additionally, the appliance may also be utilized with a tongue retention assembly for maintaining a position of the subject's tongue relative to the device for treating sleep disordered breathing.

The invention provides a mandibular condyle motion track measuring method for manufacturing A mandibular condyle prosthesis. The method comprises the following steps: acquiring a mandible three-dimensional model, a standard maxilla-mandible dentition three-dimensional model and a mandibular motion track of a patient, wherein targets include an upper target and a lower target; matching the maxilla-mandible dentition three-dimensional model with the mandible three-dimensional model, substituting a lower dentition in the maxilla-mandible dentition three-dimensional model for a lower dentition inthe mandible three-dimensional model to obtain a standard mandible three-dimensional model; matching the mandibular motion track with the standard mandible three-dimensional model; performing calculation to obtain the motion track of mandibular condyle according to the mandibular motion track and a preset function side of the mandibular condyle on the mandible three-dimensional model. According tothe method, the standard maxilla-mandible dentition three-dimensional model is taken as a middle bridge, and the mandibular condyle motion track is obtained according to the mandibular motion track obtained by measuring with a mandibular motion track scanning instrument, so that accurate measurement of the mandibular condyle motion track is realized.

In a method according to an embodiment of the present invention, a plurality of microsphere targets is applied to a surface of a tooth on the upper dentition of a person and a tooth surface of the lower dentition of the person. At least two sets of stereoscopic images are obtained, where the microsphere targets are visible in the field of view of each image. The center position of the beads is photogrammetrically determined in three dimensions for each set using the images taken from perspective positions. The change in bead positions in the sets of stereoscopic images is analyzed to mathematically characterize the jaw motion of the person.

The invention discloses a navigation device used for aiding positioning of a labial bracket. The navigation device is composed of an occlusion plate (1), a guiding frame (2) and a connecting piece (3), wherein the occlusion plate (1) is in a horseshoe shape and is matched with the shape of the gum of an orthodontic patient, the upper and lower surfaces of the occlusion plate are provided with occlusion tooth prints (4) matching with upper dentition and lower dentition of the orthodontic patient, the number of the guiding frame (2) is at least one, the cross section of each guiding frame (2) is in an L shape and is fixed above and/or below the outer side of the occlusion plate (1) via the corresponding connecting piece (3), the side, where a horizontal opening is located, of the guiding frame faces the front center line of the occlusion plate (1), and the side, where a right angle is located, of the guiding frame is far away from the front center line of the occlusion plate (1) and is correspondingly distributed relative to an orthodontic tooth. The invention also discloses a manufacturing method for the navigation device. The manufacturing method is simple, mature and easy to promote; and the prepared navigation device is simple in structure, convenient to operate and comfortable, well fits teeth, ensures accuracy of the bonding position of the bracket, omits the step of indirect bonding and improves clinical operation efficiency.

The invention discloses a mandible guiding forward and fixed orthodontic combined correction device, which comprises a maxillary correction device and a mandibular correction device, wherein the maxillary correction device comprises a first metal joint crown and a palate rod which are arranged on a first molar and a second premolar or a second primary molar, a first buccal tube (the formula is shown in the formula) and a pad are arranged on the first metal joint crown, an upper dentition main arch wire is arranged on the first buccal tube, (the formula is shown in the formula) and a power armis arranged on one side of the pad; the mandibular correction device comprises a second metal joint crown and a tongue arch which are arranged on the first molar and the second premolar or the primarymolar, a second buccal tube is arranged on the buccal side of the second metal joint crown, a lower dentition main arch wire is arranged on the second buccal tube, the second metal joint crown is provided with (the formula is shown in the formula) a blocking arm which matches with the power arm of the pad. According to the mandible guiding forward and fixed orthodontic combined correction device,the maxillary power arm and the mandibular blocking arm are matched to realize that the mandible is guided forwards, and the fixed correction is realized through the bracket, the upper dentition mainarch wire and the lower dentition main arch wire arranged on the tooth surface, so that the device has the advantages of strong support, convenient operation, good correction effect, sound patient experience and the like.

The invention provides an expansion type muscular activator for correcting class-II malocclusion. The muscular activator comprises a denture, and is characterized in that the denture is formed by a left denture and a right denture, and comprises an upper anterior tooth plastic cap and a lower anterior tooth plastic cap which are worn in the anterior tooth region, a palate denture, a vertical wing plate and an interocclusal part, wherein the palate denture is positioned at the oral palatal shelf part and the vertical wing plate is positioned on the tongue side of the lower dentition when the activator is worn; the interocclusal part is positioned between the backteeth occlusal surfaces of the upper jaw and the lower jaw; and the distal of the denture reaches the distal of the first molar of the upper jaw and the distal of the first molar of the under jaw. The expansion type muscular activator also comprises a screw and two draw hooks, the left denture and the right denture are connected by virtue of the screw; and the draw hooks correspond with mesial of canine teeth on two sides of the upper jaw. The expansion type muscular activator is reasonable in design, low in cost and convenient to wear, and is suitable for patients with early class-II high-angle malocclusion, especially cases of incompetent lips.

The present invention relates to a mouth guard and methods of use to aid in the treatment of bruxism and temporomandibular joint (TMJ) disorder comprising an adjustable molded thermoplastic outer face plate, an inner face plate and irritation spines, the mouth guard containing a section for placement and fitting to a patient's upper and lower dentition, the molded thermoplastic mouth guard including tooth channels that, upon commencing of tooth grinding, initiate mild irritation to the gums or cheeks of a wearer by the irritation spines wherein, the wearer is alerted to the occurrence of tooth grinding, whether the wearer is sleeping or awake, whereupon the wearer ceases the tooth grinding thereby preventing development of temporomandibular joint (TMJ) disorder and tooth wear.

The invention discloses a bracket-free invisible orthodontic vertical control device used after an orthognathic operation. The device comprises an upper jaw appliance, a lower jaw appliance and a plurality of cushion blocks; and the plurality of cushion blocks are positioned on the opposite sides of the upper jaw appliance and the lower jaw appliance, so that an occlusion gap is formed between the upper jaw appliance and the lower jaw appliance. At least one cushion block is provided with a correction guide structure in the occlusion direction, and the correction guide structure is used for keeping the upper jaw appliance and the lower jaw appliance at preset relative positions in an occlusion state. On one hand, direct contact between the upper jaw appliance and the lower jaw appliance can be blocked by arranging the cushion blocks, so that instable occlusion of upper and lower jawbones due to fulcrum tilting formed by contact of individual teeth is avoided; and on the other hand, when the upper and lower dentitions are in the rest position, the upper and lower occlusion relationship is unique, so that the influence on the jaw stability due to local stress application of the appliance to the teeth is reduced. In addition, during use, small displacement of the upper and lower jawbones due to intermaxillary traction can be avoided, and the aim of consolidating the orthognathic treatment effect is achieved.

The invention relates to the technical field of oral treatment equipment, and discloses a positioning device for an oral implant surgery and a surgical path planning method. The positioning device includes an upper dentition positioning component, a lower dentition positioning component and a visual sensor; the upper dentition positioning component comprises a first dental mold sleeve plate and afirst visual marking member, the first dental mold sleeve plate is used for fitting the upper dentition, and the first visual marking member is connected to the first dental mold sleeve plate and protrudes the oral cavity; the lower dentition positioning component includes a second dental mold sleeve plate and a second visual marking member, the second dental mold sleeve plate is used for fittingthe lower dentition, and the second visual marking member is coupled to the second dental mold sleeve plate and protrudes the oral cavity; and a lens of the visual sensor is oriented towards a surgical field. The positioning device uses a machine vision system to convert a three-dimensional model in an occlusal state, performs preoperative measurement and intraoperative monitoring of the patient'sjaw position, and can improve the safety of the operation.

The invention provides a customized temporomandibular joint repositioning occlusal pad and manufacturing and application methods. The manufacturing method comprises the following steps: according to malocclusion conditions, determining the correction position of the lower jaw of a patient through the following three methods: muscle de-programming, forward stretching of the lower jaw to disappearance of springing of open and closed joints, and restoration of an articular disc, and acquiring upper and lower dentition data of the patient. The customized temporomandibular joint repositioning occlusal pad is manufactured on the basis of the correction position of the lower jaw and upper and lower dentition data and comprises an integrally formed occlusal pad body, and an upper tooth socket and a lower tooth socket are formed between a lip side wrapping surface and a tongue side wrapping surface of the occlusal pad body. The upper tooth socket and the lower tooth socket are respectively arranged on the upper side and the lower side of the occlusal pad body, a tongue side inclined surface is arranged below the tongue side wrapping surface, and the occlusal pad is particularly used for occlusal treatment of temporomandibular joint disorder caused by malocclusion and temporomandibular joint relocation after joint disc reduction.

The invention discloses a method for manufacturing a complete denture with a personalized polished surface by using an old denture. The method comprises the following specific steps of: preparing an old maxillary denture and an old mandibular denture of a patient; taking the old maxillary denture as an individual tray, and performing final impression preparation and polished surface shaping; taking the old mandibular denture as an individual tray, performing final impression preparation, and performing polished surface shaping at the same time; scanning the maxillary final impression and the mandibular final impression with the personalized polished surface to obtain an STL file; separating dentition from the STL file; cutting the separated upper dentition and lower dentition by using a resin block by using a CAD/CAM method; and resetting the cut dentition into an embedded female die cavity, and performing glue filling injection molding to finish manufacturing of the complete denture. The method disclosed by the invention is accurate and simple in manufacturing, the defect that the personalized polished surface is not fully formed due to direct forming of self-setting resin is overcome, the time of adjusting occlusion during tooth wearing is reduced, and the patient can rapidly adapt to a new complete denture.

The invention relates to an orthopedic device stimulating lower mandibular advancement and inhibiting upper mandibular growth, comprising an upper mandibular portion and a lower mandibular portion. The upper mandibular portion has left and right plastic occlusal pads, a screw opener, and left and right jaw rods with one located behind the other. The screw opener is located at the midline of the upper mandibular jaw of a patient. The left and right plastic jaw rods have one end fixed to the screw opener and the other end integrated to the left and right plastic occlusal pads. The lower mandibular portion has left and right plastic occlusal pads connected via a lower mandibular lingual plastic base, a snap ring, and spherical adjacent hooks, the left and right occlusal pads of the lower mandibular portion cover occlusal surfaces of lower mandibular left and right first premolar teeth or first deciduous molars and are in a slant crossing relation 70 degrees upwardly and towards mesiocclusion with the left and right occlusal pads of the upper mandibular portion at the distal of the first premolar teeth or first deciduous molars. The orthopedic device has the advantages that the device is fixedly bonded to upper dentition through the upper mandibular portion, the lower mandibular portion is mechanically secured to lower dentition through the snap ring, adjacent hooks and the lengthened base, and this structural configuration has ideal orthopedic effect.

The invention discloses a preparation method of an appliance for abnormality repositioning of mandible. The method comprises the steps: firstly, obtaining an initial dental jaw model of a patient, wherein the occlusion relation of upper and lower dentitions in the initial dental jaw model serves as an initial relative position of the model; determining a lower jaw repositioning model after repositioning the lower jaw of the patient according to the initial relative position of the model; designing an upper molar jaw pad group and a guide inclined plane model group according to the lower jaw repositioning model, and fusing the structures of the upper molar jaw pad group and the guide inclined plane model group to obtain a printing model group; designing an appliance accessory model group adhering to the labial surface or the lingual surface of the teeth; and combining the lower jaw repositioning model, the printing model group and the appliance accessory model group A, printing through3D to obtain an upper jaw model and a lower jaw model, and forming and cutting the printed model through a hot pressing film to obtain the lower jaw repositioning appliance. In the process of lower jaw repositioning correction, invisible correction and functional correction are simultaneously carried out.

The invention discloses a dentition meshing stress index measurement and occlusion function pre-evaluation system and method. An occlusion movement track is collected through a three-dimensional displacement sensor, and the occlusion movement track is measured through coordinate positioning and a face recognition camera; model reconstruction is performed on a three-dimensional dentition model, noise is removed, and smoothing and local restoration treatment is performed to obtain an upper and lower dentition overall model for engineering calculation; meshing stress distribution of dentitions ismeasured, processed and displayed, and data reconstruction and matching are performed on measured dentition data results; the meshing stress distribution of the dentitions is calculated and simulated; post-processing display is performed on the three-dimensional movement track of occlusion movement, and occlusion process kinematics analysis is performed; and the three-dimensional dentition modeland the kinematic analysis are digitized and parameterized, and dentition occlusion stress distribution simulation and verification are performed by adopting a numerical analysis method as a basic condition, so that personalized evaluation is provided for different occlusion functions.