38 results about "Mandibular dentition" patented technology

A dental orthotic comprises a mandibular orthotic conforming to a user's mandibular dentition and including oral contours adapted for adjusting the user's tongue/tooth/mouth interaction, and may include extensions for positioning the user's tongue. The contours are designed and applied to specific locations on the orthotic and extensions of the orthotic to promote a desired tongue response for specific physiological symptoms. The contours change the shape of the mandibular orthotic as well as the dental shapes within the mouth, resulting in repositioning and/or reshaping of the tongue and tissue of the throat, thereby improving the oral functions as well as relieving neuromuscular responses and autonomic nervous system dysfunctions. The dental orthotic may include a maxillary orthotic that is fixed with respect to the mandibular orthotic.

A pharyngeal airway adjuster, or mandible positioning device, has a maxillary dentition engagement component and a mandibular dentition engagement component, each on opposite sides of a plane extending therebetween. An adjustable connection couples the maxillary dentition engagement component with the mandibular dentition engagement component. The adjustable connection has a first adjustment screw having a longitudinal axis parallel to the plane and a second adjustment screw having a longitudinal axis perpendicular to the plane. The first and second adjustable screws are independently adjustable and structured to effect horizontal and vertical displacement, respectively, of the maxillary dentition engagement component relative to the mandibular dentition engagement component. The pharyngeal airway adjuster has a number of indicators adapted to indicate the amount of forwardly and rearwardly displacement effected by the first adjustment screw and/or the amount of upwardly and downwardly displacement effected by the second adjustment screw.

Provided is an apparatus for the alleviation of sleep apnoea in which dentition engagement units or dental overlays shaped to engage the maxillary and mandibular dentition of a subject each having a laterally located pair of flanges the ends of which almost abut, magnets embedded in said flanges with their like poles adjacent or sinusoidally-shaped extension elements made from shape-memory material having a transition temperature equal to or slightly less than normal body temperature and accommodated in cavities in said flanges provide, respectively, a magnetic repulsion force or expansive force when warmed by body heat sufficient, during sleep-induced relaxation, to displace said mandibular dentition engagement unit or dental overlay forwardly in relation to said maxillary dentition engagement unit, displacing the mandible of the subject and thereby effecting a displacement of the temporomandibular joint.

The invention provides an elastic push rod suitable for a bracket-free invisible correction device. The elastic push rod structurally comprises a push rod body made of an elastic material and inserting heads arranged at two ends of the push rod body, integrated with the push rod body and made of an elastic material, and each inserting head sequentially comprises an expanding head, a neck contracting relative to the head and a tail expanding relative to the neck from an end away from the push rod body to an end close to the same. It would be best if the head of each inserting head is designed to be in the shape of an expanding ball, each neck is in the shape of a column with diameter smaller than ball-shaped diameter of the corresponding head, and each tail is in the shape of a disc with diameter greater than that of the corresponding neck. When in use, two ends of the elastic push rod are respectively inserted into sleeve rings of the upper-lower jaw bracket-free invisible correction device, tension caused by traction of a conventional rubber band is changed into thrust through deformation resilience of the push rod, upper-lower jaw dentition relation can be adjusted, press-in force can be applied to teeth, retention force of the bracket-free invisible correction device can be increased, and correction effect is improved.

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 invention provides a posterior tooth decompression bite plate and a manufacturing method thereof, relates to the technical field of orthodontic instruments, and is used for improving the treatmenteffect of treating temporal-mandibular joint disorder comprehensive syndromes. The posterior tooth decompression bite plate comprises a retainer and a bite guide body, the retainer extends in a curveconsistent with the dentition in shape and comprises a palate side wall, a buccal side wall and an occlusal surface, the palate side wall and the buccal side wall are oppositely arranged, the occlusal surface is connected between the palate side wall and the buccal side wall, and the palate side wall, the buccal side wall and the occlusal surface define a tooth socket used for being fixed to thedentition. Wherein the occlusion guide body is arranged in a molar area of the retention body, comprises an occlusion surface used for being propped against jaw teeth, and is used for strutting an upper jaw dentition and a lower jaw dentition and enabling a lower jaw condylar process to retreat to an edge position limited by a temporal-mandibular ligament. The posterior tooth decompression bite plate provided by the invention is used for treating temporomandibular joint diseases.

A method for highly efficient virtual reconstruction of tooth dentition functional aesthetics form includes such steps as 1) scanning normal maxillary and mandibular dentition as standard template data; 2) scanning the current dentition requiring virtual reconstruction, recording the current dentition as data D1; 3) selecting a set of standard template data from that step 1) and recording the dataas data D2; 4) registering the data D2 with the data D1 by taking the unchanged part after reconstruction as a common area; 5) if that original tooth shape is to be preserved, extracting the three-dimensional data of the crown of each tooth in the data D1, registering the three-dimensional data on the corresponding tooth of the data D2, and obtaining the virtual prediction data; 6) if that original tooth shape does not need to be retained, the data D1 is directly replaced with the data D2 to obtain the virtual prediction data; 7) the virtual prediction data is three-dimensionally printed to present the entity of the prediction result. The reconstruction result of the invention can be directly used for digitally restoring the dental functional aesthetics form of the teeth, and the functional aesthetics design level of the operator is rapidly improved.

An attachment system for use with an intra-oral dental appliance to be inserted into the oral cavity of a human for treatment of sleep apnea, snoring, bruxism, and temporo-mandibular joint disorder, the attachment system having: a first attachment means securable to a bilateral under surface conforming to the clinical occlusal plane of a human, and to the maxillary dentition of a first molded member; a second attachment means securable to a bilateral upper surface conforming to the clinical occlusal plane of a human, and to the mandibular dentition of a second molded member; an attachment element having means for connecting the first attachment means, and connecting the second attachment means cooperatively together.

The invention provides a design method for automatically assisting to find the occlusion depth of teeth. In the method, a three-dimensional data model of dentition in which maxillary and mandibular dentitions are occluded together is collected and read; a point cloud registering method is utilized to allow scanned three-dimensional models of the maxillary and mandibular dentitions to be occluded together; a sub-interface is defined to be a generalized occlusal plane by using a graphic classification thought, and a point-to-plane distance is corresponding to the occlusion depth. The method is ingenious and does not manual participation; a tooth model with occlusion depth information is exported, visual display is performed according to the different occlusion depths, and a doctor is assisted to build a new occlusion relationship model on a computer via an intuitional image and an objective quantitative index, so as to better guide surgical treatment of orthodontics and orthognathics.

The invention relates to the field of medical instruments, in particular to a self-fixing individualized mandible retainer and a construction method thereof. The construction method comprises the following steps: constructing a jaw bone three-dimensional fusion model based on a jaw bone three-dimensional model, a maxillary tooth three-dimensional model and a mandibular tooth three-dimensional model; based on the outer surface of the maxillary dentition, constructing and obtaining a maxillary tooth sleeve retention area, and forming a maxillary tooth retention groove corresponding to the mandibular dentition in the maxillary tooth sleeve retention area; on the basis of the outer surface of the mandibular dentition, constructing a mandibular tooth biteplate area, and forming a mandibular tooth containing groove corresponding to the mandibular dentition in the bottom of the mandibular tooth biteplate area; and constructing an occlusion connection area, wherein the occlusion connection area is connected with the maxillary tooth sleeve retention area and the mandibular tooth occlusion plate area. A user wears the mandible retainer to fix the mandible at a proper position of the mandible designed by a computer by means of the maxillary tooth sleeve and the biteplate, and the proper position of the mandible is adjusted according to the design of different rehabilitation stages of the user, so that the effect of preventing the mandible from retreating after an operation can be achieved.

The invention relates to a child teeth cleaning simulator. The simulator comprises an upper dentition model, a mandibular dentition model, a toothbrush, holders, a rotary shaft, a base and an intelligent control system. The upper dentition model is connected with two holders, the mandibular dentition model is connected with two holders, and the four holders get together and are connected to the rotary shaft, the rotary shaft is connected with the base through another holder. A corresponding sensor is arranged in each unit module of the upper dentition model, and a corresponding sensor is arranged in each unit module of the mandibular dentition model. The intelligent control system is arranged in the base, and the toothbrush is connected with the dentition models and the intelligent control system through handle sensors. The upper dentition model and the mandibular dentition model are made according to a model of child teeth and can be freely disassembled. According to the simulator, a child can clearly see the constitutive structure of the child's own teeth, meanwhile, the tooth brushing posture of the child can be evaluated, and the child is helped to develop a scientific tooth brushing posture.

The invention discloses a manufacturing method and application of a pressed film material functional appliance, and belongs to the technical field of oral treatment. The manufacturing method comprisesthe following steps: preparing an impression, wherein preparing upper and lower jaw tooth retention film; transferring a occlusal relationship; reconstructing occlusion; fixing and reconstructing theocclusal relationship wherein blending a dental self-setting plastic material, and fixing and connecting rear tooth sections of the upper and lower jaw tooth retention film into a whole at the reconstructed occlusal relationship position; removing the lower anterior tooth retention film: cutting off the lower anterior tooth retention film. According to the manufacturing method, the lower jaw dentition ultrathin retention film is moved forwards by 4-8 mm to be fixed to the ultrathin retention film of the upper jaw dentition, the ultrathin retention film of the lower jaw anterior teeth is removed, and a space and a channel for free movement of the tongue body when the mouth is opened for speaking are reserved.

The invention relates to the technical field of medical treatment, in particular to a bone taking guiding plate printed through a three-dimensional technology for the mandible ascending limb part. According to the bone taking guiding plate printed through the three-dimensional technology for the mandible ascending limb part, the best shape and size of a required bone block are designed according to the best transplantation scheme for the autogenous bone block in a transplantation accepting area. According to the best shape and size of a transplantation bone block, the thickness and shape of anosteotomy guiding groove of an osteotomy guiding assembly are designed. The thickness of the osteotomy guiding groove coordinates with the length of a drill needle and is equal to the difference value between the length of the drill needle and the thickness of the bone block required for a corresponding part, and the effect of controlling drilling depth in the bone can be achieved. The shape of the osteotomy guiding groove is consistent with the shape of the surface of the bone block subjected to transplantation. Therefore, the shape and size of the transplantation bone block can be controlled to the largest extent. The three-dimensional technology is adopted for printing the titanium alloy bone taking guiding plate based on a tooth-borne type. The guiding plate is fixed through the mandibular dentition, and the fixation end is stable and not loose. The other end of the guiding plate is an osteotomy guiding groove end and closely fits the bone surface of the mandible ascending limb part.

A method for determining treatment of orthopaedic imbalances including the steps of: mounting upper and lower jaw dentition models to an articulator; setting the position of the models to replicate the relative positions of the jaw dentitions of a patient; determining from an x-ray or scan: (i) the outline of the patient's condylar head; and (ii) the pattern and depth of the patient's fossae; displaying a reproduction of the outline of the patient's condylar head; displaying a reproduction of the pattern and depth of the patient's fossae and eminance; adjusting the relative position of the models to remedy orthopaedic imbalances, which adjustment causes relative movement of: (i) the display of the condylar head; and (ii) the display of the pattern and depth of the fossae and eminance; and recording adjustments made to the relative position of the fossae/eminence and condoylar head and the upper and lower jaw dentition models.

A mandibular advancement splint) MAS) including dentition engagement units, each having a face for operatively abutting a complementary face of the other, and an opposed dentition engagement face which is adapted to positively engage the maxillary or mandibular dentition. A plane of abutment of the faces is approximately normal to the sagittal plane to facilitate sliding displacement of one engagement unit relative to the other. The MAS further includes at least one elastic element configured to operatively exert a user-configurable urging force between said dentition engagement units, so that the mandibular dentition is biased forward and along said abutment plane relative to the maxillary dentition when the splint is in use.