31 results about "Maxillary dentition" patented technology

The invention provides a computer-implemented method for determining the occlusion relationship of three-dimensional digital models of maxillary and mandibular dentitions based on tooth photos, which comprises the following steps: acquiring a first photo of teeth of a patient in an occlusion state, the first photo comprising a plurality of maxillary teeth and a plurality of mandibular teeth; obtaining a first three-dimensional digital model and a second three-dimensional digital model respectively representing the upper jaw dentition and the lower jaw dentition of the patient; rendering the first three-dimensional digital model and the second three-dimensional digital model to obtain a first rendering graph; predicting an optical flow between the first photo and the first rendering graph by using a trained optical flow neural network based on the first photo and the first rendering graph; and based on the optical flow, calculating a first spatial position transformation relationship which can transform the relative position relationship between the first and second three-dimensional digital models to a state closer to the bite state shown by the first photograph, with a solution to solve the PnP problem, and calculating a second spatial position transformation relationship which can transform the relative position relationship between the first and second three-dimensional digital models to a state closer to the bite state shown by the first photograph.

A mouth-operated control device comprising an arched casing (10) configured for at least part of the casing (10) to be arranged between a maxillary dentition and a mandibular dentition of the user in an operating position, a first at least bidirectional input interface (21) housed in the concave region of the casing (10) and accessible to the tongue of the user; a second at least bidirectional input interface (22) in the part of the casing (10) intended for being arranged between the maxillary dentition and the mandibular dentition selected to be arranged facing the mandibular dentition of the user, allowing the operation thereof with the relative movement between the maxillary dentition and the mandibular dentition of the user; and a control electronics (30) connected to all the input interfaces (21, 22, 23) for the transmission of control signals to an external device.

This invention belongs to the field of anti-snoring technology, specifically a silicone anti-snoring device. It comprises an integrally molded silicone body consisting of an occlusal pad, an upper labial shield, a tongue induction screen, and a lower labial shield. Both ends of the upper and lower labial shields extend to the end face of the occlusal pad via buccal screens. A connecting portion exists between the occlusal pad and the tongue induction screen. This connecting portion is smooth and without protrusions in the Z-axis, and the corner surface of the occlusal pad away from the connecting portion is smooth. The smooth and non-protruding connecting portion in the Z-axis eliminates the palatal base of the maxillary teeth, making the tongue more easily lifted by the tongue induction screen. The tongue induction screen pushes the tongue from the floor of the mouth to the palatal side of the upper teeth, opening the airway and achieving buccal and lingual muscle balance. Patients can choose one, two, or three stages of mandibular protraction treatment based on their snoring symptom relief and temporomandibular joint symptoms. By protruding the mandible, the airway is further opened.

This invention discloses a gingival protection device for intermaxillary traction after orthognathic surgery, along with its manufacturing and usage methods. The device is a gingival protection bracket worn on the maxillary dentition, comprising a labial / buccal cover, a palatal cover, a blocking portion, and a connecting bridge. The labial / buccal cover conforms to the highest point of the tooth crown, while the palatal cover conforms to the entire palatal surface of the tooth crown, positioned between the intermaxillary traction rubber band and the gingival soft tissue. The blocking portion forms a protruding structure along the dentition direction on the labial side of the anterior teeth, mechanically limiting the intermaxillary traction rubber band during intermaxillary traction. The connecting bridge connects the labial / buccal cover and the palatal cover together in the posterior molar region on both sides. This device effectively blocks the direct action of the traction rubber band on the gingival soft tissue without affecting postoperative occlusal adjustment, improving posterior traction and occlusal stability and comfort, and aiding in rapid patient recovery. Furthermore, it balances wearing stability with the convenience of patient self-disposal.

The invention discloses a midline positioning ruler for orthognathic surgery and a manufacturing method thereof, and relates to the technical field of medical instruments. The method comprises the following steps: designing a multi-curve positioning rule main body; drawing a limiting structure and a retention structure on the positioning ruler main body; a buckle is virtually designed, and a clamping groove is drawn in the buckle; performing maxillofacial region scanning on the target object, and making an anhydrite tooth model; establishing a virtual three-dimensional cranio-jaw model, performing laser scanning on the anhydrite tooth model to obtain virtual dentition data, and replacing the dentition data in the maxillofacial region data with the virtual dentition data; the positions of the positioning rule main body and the buckle are adjusted; the buckle and the middle occlusion guide plate are virtually connected into a whole; and manufacturing a positioning ruler main body through laser cutting, and performing integrated three-dimensional printing on the buckle and the middle occlusion guide plate. The midline positioning ruler is used for quickly positioning the midline of the maxillary dentition in the orthognathic operation, so that the operation precision is improved, the operation time is saved, the operation efficiency is improved, and the dependence of the operation on the experience of doctors is reduced.

The invention discloses a treatment false tooth manufacturing method based on a digital technology, which comprises the following steps: scanning to obtain oral cavity data and a jaw position relationship of a patient, and designing an upper jaw false tooth and a lower jaw false tooth according to the oral cavity data and the jaw position relationship obtained by scanning; an upper jaw base body, an upper jaw dentition body, a lower jaw base body and a lower jaw anterior tooth body are manufactured through 3D printing; bonding the maxillary dentition entity on the maxillary base entity by using an adhesive to form a maxillary denture entity, and bonding the mandibular anterior tooth entity on the mandibular base entity by using an adhesive to form a mandibular denture entity; filling a groove on the mandible base entity with a material to form a resin flat plate; and correcting the resin plate until a correct occlusion relationship is established between the upper jaw denture entity and the lower jaw denture entity. The mode of combining digital design and 3D printing is adopted, the manufacturing process is short, and the manufacturing period of the treatment denture can be remarkably shortened; and the manufactured treatment denture entity and the designed digital treatment denture are high in consistency, so that the manual error is reduced.

The application discloses a dental treatment system, which comprises an arch expander and a shell-shaped appliance for transverse expansion of the upper jaw, the arch expander comprises an expander and a band ring sleeved on the teeth on both sides of the posterior teeth area, and the band ring and the expander are connected through a connecting part; the shell-shaped appliance comprises a shell-shaped body, the shell-shaped body comprises a plurality of tooth receiving cavities, and the shell-shaped body is provided with a screen barrier used in cooperation with the arch expander, the screen barrier comprises a blocking part protruding towards the distal teeth on the buccal side; wherein, after the arch expander and the shell-shaped appliance are worn, the blocking part blocks the contact between the buccinator and the corresponding teeth, so that the corresponding teeth and the corresponding buccinator have a space for accommodating the change of the dental arch from a first position to a second position. The arch expander and the shell-shaped appliance in the dental treatment system jointly act on the upper jaw of the patient, improve the treatment effect during the expansion of the arch, and ensure that the treatment result is consistent with the treatment plan.

1. A shell-shaped dental instrument configured for use in a maxillary dentition, comprising a shell-shaped body (1) provided with a plurality of tooth-receiving cavities (11), wherein the shell-shaped body (1) is further provided with an adjustment portion (2) in a palatal region, and the adjustment portion (2) is configured to adjust a maxillomandibular relative position relationship, and includes a first guide portion (21) and a support (22) for supporting the first guide portion (21), the first guide portion (21) being configured to be located through a portion of a palate corresponding to an anterior tooth region and being connected to the free ends on the lingual side of at least two tooth-receiving cavities (11) of the plurality of tooth-receiving cavities (11) in the anterior tooth region,the first guide portion (21) is configured to tilt towards a mandibular plane of a jaw to allow some anterior teeth in the jaw to slide along the first guide portion (21) and drive the jaw forward to a target orthodontic position; wherein the support (22) is connected to the first guide portion (21) and is configured to form by extending from the gingival ends of some of the plurality of tooth-receiving cavities (11) in a posterior tooth region towards the palate and be partially supported on the palate when the shell-shaped dental instrument is carried. 2. The shell-shaped dental instrument according to claim 1, wherein the first guide portion (21) is configured to extend from the free ends on the lingual side of the at least two tooth-receiving cavities (11) in the anterior tooth region toward an opposite jaw and in a direction away from the anterior teeth. 3. The shell-shaped dental instrument according to claim 2, wherein the first guide portion (21) is provided with a first guide surface (211), the first guide surface (211) being a curved surface and the first guide surface (211) being configured to have a tangent plane at any point on the first guide surface (211), the angle between the tangent plane and the mandibular plane being greater than 0° and less than or equal to 45° 4. The shell-shaped dental instrument according to claim 1, wherein the fitting portion (2) further includes a second guide portion (23), wherein a tooth-proximal end of the second guide portion (23) is connected to the free ends on the lingual side of the at least two tooth-receiving cavities (11) in the anterior tooth region, and a tooth-distal end of the second guide portion (23) is connected to a tooth-proximal end of the first guide portion (21). 5. The shell-shaped dental instrument according to claim 4, wherein the second guide portion (23) is provided with a second guide surface (231) configured to press against the mandibular anterior teeth, and a portion of the second guide surface (231) configured to be in contact with the incisal ends of the mandibular anterior teeth in a plane perpendicular to the longitudinal axes of the mandibular anterior teeth. 6. The shell-shaped dental instrument according to claim 4 or 5, wherein the second guide portion (23) and the first guide portion (21) have, in a sagittal plane, an inverted "V" shaped cross-section, the included angle (α) of the inverted "V" shape being greater than 45° and less than or equal to 150°, and wherein, when the shell-shaped dental instrument is worn, the incisal ends of some mandibular anterior teeth are located at a junction of the second guide portion (23) and the first guide portion (21). 7. The shell-shaped dental instrument according to claim 6, wherein the junction of the second guide portion (23) and the first guide portion (21) is configured to have a distance of 0 mm to 2 mm from a palatal fold. 8. The shell-shaped dental instrument according to any one of claims 1 to 7, wherein the first guide portion (21) has a first palatal side surface configured to be 0 mm to 2 mm from a palatal fold in a vertical direction. 9. The shell-shaped dental instrument according to claim 8, wherein the first palatal side surface of the first guide portion has a surface structure configured to match a surface structure of the palatal fold at a corresponding location. 10. The shell-shaped dental instrument according to any one of claims 4 to 9, wherein the second guide portion (23) is configured to be at least partially out of contact with the surfaces on the lingual side of the teeth in the anterior tooth region. 11. The shell-shaped dental instrument according to any one of claims 1 to 10, wherein the first guide portion (21) is arranged symmetrically around a dental midline. 12. The shell-shaped dental instrument according to any one of claims 4 to 11, wherein the second guide portion (23) is arranged symmetrically around a dental midline. 13. The shell-shaped dental instrument according to any one of claims 1 to 12, wherein the at least two tooth-receiving cavities (11) in the anterior tooth region are configured to be out of contact with the labial side surfaces of the corresponding anterior teeth. 14. The shell-shaped dental instrument according to claim 13, wherein each of the at least two tooth-receiving cavities (11) in the anterior tooth region has an inner labial side surface configured to form a hollow with an outer surface of a respective anterior tooth of the corresponding anterior teeth or wherein each of the at least two tooth-receiving cavities (11) in the anterior tooth region has a hollowed labial side surface. 15. The shell-shaped dental instrument according to any one of claims 1 to 14, wherein the support (22) is connected to the first guide portion (21) by means of a connecting portion (221), the connecting portion (221) is provided with a tongue guide portion (211a), and the tongue guide portion (211a) is a geometric structure configured to be raised or lowered towards a tongue. 16. The shell-shaped dental instrument according to claim 15, wherein in response to the tongue guide portion (211a) being the geometric structure configured to rise towards the tongue, the tongue guide portion (211a) is of a solid structure. 17. The shell-shaped dental instrument according to claim 15, wherein in response to the tongue guide portion (211a) being the geometric structure configured to rise towards the tongue, the tongue guide portion (211a) is of a hollow structure. 18. The shell-shaped dental instrument according to any one of claims 1 to 17, wherein a surface of the support (22) configured to join the palate is configured to match a surface of a palatal fold at a corresponding location on the palate. 19. The shell-shaped dental instrument according to any one of claims 1 to 18, wherein the first guide portion has a reinforcing portion arranged in a sagittal direction. 20. The shell-shaped dental instrument according to claim 19, wherein the reinforcing portion (4) is a reinforcing ridge formed by partially raising or lowering a portion of the first guide portion (21) towards a tongue. 21. A dental instrument system, comprising a plurality of shell-shaped dental instruments, wherein the plurality of shell-shaped dental instruments include at least one shell-shaped dental instrument according to any one of claims 1 to 20, and the plurality of shell-shaped dental instruments have a geometric configuration configured to gradually reposition teeth from an initial position to a target position while adjusting a jaw from a first position to a second position. 22. The dental instrument system according to claim 21, wherein the adjustment portion (2) of each respective shell-shaped dental instrument of at least two shell-shaped dental instruments in successive use among the plurality of shell-shaped dental instruments further includes a second guide portion (23), a tooth-proximal end of the second guide portion (23) being connected to the free ends on the lingual side of the at least two tooth-receiving cavities (11) in the anterior tooth region, and a tooth-distal end of the second guide portion (23) being connected to a tooth-proximal end of the first guide portion (21), the second guide portion (23) and the first guide portion (21) having an inverted "V"-shaped cross-section in a sagittal plane, wherein, when the respective shell-shaped dental instrument is carried,The incisal ends of some of the mandibular anterior teeth are located at a junction of the second guide portion (23) and the first guide portion (21). 23. The dental instrument system according to claim 22, wherein in the at least two shell-shaped dental instruments in successive use, the junction of the second guide portion (23) and the first guide portion (21) in a shell-shaped dental instrument in a later stage is configured to have a first distance from a palatal fold in a vertical direction and a junction of the second guide portion (23) and the first guide portion (21) in a shell-shaped dental instrument in an earlier stage is configured to have a second distance from the palatal fold in the vertical direction, the first distance being greater than the second distance. 24. The dental instrument system according to claim 21, wherein the projections of the first guide portions (21) on the at least two shell-shaped dental instruments in successive use in a horizontal plane have the same minimum length in a sagittal direction. 25. The dental instrument system according to claim 21, wherein in the at least two shell-shaped dental instruments in successive use, a minimum length of a projection of a first guide portion (21) of a shell-shaped dental instrument at a later stage in a horizontal plane in a sagittal direction is greater than a minimum length of a projection of a first guide portion (21) of a shell-shaped dental instrument at a previous stage in the horizontal plane in the sagittal direction.

On one hand, the utility model provides a dental instrument which is U-shaped, the upper side of the dental instrument is provided with a cavity for accommodating the upper jaw dentition of a patient, the lower side of the dental instrument is provided with a cavity for accommodating the lower jaw dentition of the patient, the dental instrument comprises a first section and a second section which are connected along the front-back direction, and the upper side and the lower side of the dental instrument are folded at the first section; the upper side and the lower side of the dental instrument are forked on the second section in the direction from the first section to the second section, and under the action of occlusal force of a patient, the forked part between the upper side and the lower side of the second section of the dental instrument can be reduced, so that rebounding force generated by elastic deformation can lower corresponding teeth of the patient.

This product is an image for setting up the imaging, displaying setting information, and displaying and editing various information acquired by imaging when using an intraoral scanner (a device used primarily for imaging the oral cavity in dental treatment) to photograph the inside of the oral cavity. The "image diagram" shows the state when the upper jaw selection section is selected. When photographing the upper jaw dentition with an intraoral scanner, the imaging is performed with the upper jaw selection section selected. Also, when the upper jaw selection section is selected, information such as the image of the upper jaw acquired by imaging can be displayed in the captured image / various information display section. The "image diagram with the lower jaw selection section selected" shows the state when the lower jaw selection section is selected. When photographing the lower jaw dentition with an intraoral scanner, the imaging is performed with the lower jaw selection section selected. Also, when the lower jaw selection section is selected, information such as the image of the lower jaw acquired by imaging can be displayed in the captured image / various information display section.

The invention discloses an improved mandibular protraction position reconstruction appliance, which relates to the field of oral cavity correction, and comprises an upper jaw anchoring assembly and a lower jaw anchoring assembly which are respectively fixed on an upper jaw dentition and a lower jaw dentition and are matched with each other to realize mandibular protraction guidance, the device comprises an upper jaw crown, a buccal tube body and an adjusting component, the upper jaw crown is an unprepared adhesive crown, and the buccal tube body is fixed on the buccal side of the upper jaw crown; the buccal side tube body is a buccal surface square wire tube with a threaded hole formed in the side wall, a locking piece is arranged in the threaded hole, one end of the adjusting part is a square wire end, and the other end of the adjusting part is an arc-shaped end embedded with the lower jaw anchoring assembly; the mandibular anchoring assembly is matched with mandibular posterior teeth and comprises a mandibular crown and an arm-shaped embedding part; according to the appliance, the accurate control and retention of the protraction amount of the lower jaw are realized through the quantitatively adjustable locking mechanism and the unprepared adhesive crown.

The application provides a personalized guide plate and positioning method for maxillofacial nerve three-dimensional navigation, which comprises a fixed part and a navigation part, the fixed part and the navigation part are designed by patient maxillofacial three-dimensional imaging data and 3D integrally printed; the navigation part is provided with a navigation positioning channel corresponding to the patient maxillofacial nerve. The fixed part and the navigation part are integrally printed based on the patient maxillofacial three-dimensional imaging data, so that the fixed part has high compatibility with the patient's maxillary / dental arch form, and the navigation part also has high compatibility with the patient's face, and the setting accuracy of the navigation positioning channel is also higher, so that when the fixed part is placed between the patient's maxillary dental arch and mandibular dental arch and occluded, compared with the conventional simple facial soft tissue fixation method, the navigation positioning channel on the navigation part of the application is more accurate and reliable.

The utility model discloses an upper jaw tooth corrector which comprises a shell-shaped corrector, the shell-shaped corrector comprises a shell-shaped corrector main body and a transverse jaw arch, and the shell-shaped corrector main body is provided with a plurality of tooth storage cavities; a transverse jaw arch at least partially spans the tooth arch width of the shell-shaped appliance main body, and the two ends of the transverse jaw arch are connected to the lingual sides of the rear tooth areas on the left side and the right side of the shell-shaped appliance main body respectively; when the shell-shaped appliance is worn on the dentition of the upper jaw, the transverse jaw arch and the upper jaw are arranged at an interval, and the face, away from the upper jaw, of the transverse jaw arch forms a tongue acting face. Compared with the prior art, after the maxillary orthodontic appliance is worn on the dentition of the maxillary, when the tongue licks and presses the tongue acting surface of the transverse jaw arch, the transverse jaw arch is pressed to bend towards the maxillary, and the two sides of the transverse jaw arch are retracted inwards, so that the back tooth region of the shell-shaped orthodontic appliance body can be driven to be retracted inwards to generate orthodontic force on cheek-inclined back teeth, and the cheek-inclined back teeth are vertical.

On one hand, the utility model provides a dental instrument which comprises a U-shaped base plate, U-shaped grooves capable of containing an upper jaw dentition and a lower jaw dentition are formed in the upper side and the lower side of the U-shaped base plate respectively, elastically-compressible occlusion blocks of a lattice structure are arranged at the positions, corresponding to teeth to be depressed, in the grooves, and under the action of occlusal force of a patient, the teeth to be depressed can be depressed. The occlusion block can be elastically compressed to generate rebound force capable of depressing the tooth to be depressed, the lattice structure can be elastically compressed in the direction of the pressure, and the geometric shape of the lattice structure in the direction perpendicular to the pressure is basically kept unchanged.

To provide a mouthpiece that solves problems such as a long face, choking, and pain in the temporomandibular joint caused by downward and backward movement of the jaw position with aging, and corrects the jaw position to improve the aesthetics and health of a user. [Solution] The mouthpiece is an orthodontic appliance designed to align the jaw bone structure. It has a U-shaped tray shape that corresponds to the maxillary dentition. It is deformable by immersing it in hot water to soften it before use, allowing it to fit snugly against the user's maxillary dentition. The mouthpiece comes in at least three different hardness variations, and the user can select the optimal hardness from these multiple hardness options depending on the condition of the jaw muscles and biting pressure. By placing this device in the mouth, the jaw position is guided to the normal position.

The dental instrument is worn on the maxillary dentition and comprises a shell-shaped body and a palate device connected with the shell-shaped body, the shell-shaped body comprises a first section and a second section, the first section is provided with a tooth containing cavity for containing at least one tooth in a left rear tooth area, and the second section is provided with a tooth containing cavity for containing at least one tooth in a right rear tooth area. The second section is provided with a tooth accommodating cavity for accommodating at least one tooth in the rear tooth area on the right side; one side of the palate device is connected to the lingual side gingival margin of the first section, the other side of the palate device is connected to the lingual side gingival margin of the second section, and the whole palate device is arranged in an arch shape in the palate direction; a storage device used for containing dressing is arranged at the preset position, corresponding to the palate wound, of the palate device, the side, close to the palate, of the storage device is of an opening structure, the dressing covers and is connected to the palate wound in a pressed mode in the wearing process, and dressing treatment can be conveniently conducted on the palate wound.

One aspect of this application provides a dental instrument comprising: a first shell-like body, which is an integral shell forming a cavity for receiving a patient's first dentition, the first shell-like body being configured such that a partial surface of the lingual or labial / buccal side of the first tooth is exposed on the first shell-like body, the first dentition being the maxillary or mandibular dentition; a second shell-like body, which is an integral shell forming a cavity for receiving the patient's second dentition, the second dentition being the opposing dentition of the first dentition; a first anchoring attachment protruding from the first or second shell-like body; a second anchoring attachment mounted on the partial surface of the first tooth exposed on the shell-like body; and an elastic member that mechanically engages with the first and second anchoring attachments to elastically deform, thereby applying an orthodontic force to the first tooth through the second anchoring attachment.

The application discloses a midline positioning ruler for orthognathic surgery and a manufacturing method thereof, and relates to the technical field of medical instruments. The method comprises the following steps: designing a multi-curved positioning ruler main body; drawing a limiting structure and a retaining structure on the positioning ruler main body; virtually designing a buckle and drawing a clamping groove on the buckle; scanning a jaw and face of a target object and manufacturing a hard gypsum tooth model; establishing a virtual three-dimensional craniofacial model, laser scanning the hard gypsum tooth model to obtain virtual dentition data, and replacing dentition data in the jaw and face data with the virtual dentition data; adjusting the positions of the positioning ruler main body and the buckle; virtually connecting the buckle and the intermediate occlusion guide plate to form an integrated whole; and laser cutting the positioning ruler main body and integrally three-dimensionally printing the buckle and the intermediate occlusion guide plate. The midline positioning ruler is used for quickly positioning the position of the maxillary dentition midline in orthognathic surgery, improves the operation precision, saves the operation time, improves the operation efficiency, and reduces the dependence of the operation on the experience of doctors.

A mouth-operated control device comprising an arched casing (10) configured for at least part of the casing (10) to be arranged between a maxillary dentition and a mandibular dentition of the user in an operating position, a first at least bidirectional input interface (21) housed in the concave region of the casing (10) and accessible to the tongue of the user; a second at least bidirectional input interface (22) in the part of the casing (10) intended for being arranged between the maxillary dentition and the mandibular dentition selected to be arranged facing the mandibular dentition of the user, allowing the operation thereof with the relative movement between the maxillary dentition and the mandibular dentition of the user; and a control electronics (30) connected to all the input interfaces (21, 22, 23) for the transmission of control signals to an external device.

A jaw position correction device including a lateral tooth row arrangement unit, a first pressing force generating unit, a second pressing force generating unit, and a resultant force transmitting unit; (1) When worn, the lateral dental row placement section is positioned along the palate side of the maxillary dental row in the region corresponding in length to the canine tooth through the second premolar in the right and left maxillary dental row of the wearer (patient), (2) The first pressing force generating unit includes a pressing force transmitting unit and a pressing force source in the vicinity of the hard palate, and is connected to the right and left lateral tooth row arrangement units, (3) The second pressing force generating portion exists at the connection portion between the right and left lateral tooth row arrangement portion and the right and left first pressing force transmitting portion, and generates a force that tends to widen the angle formed by the connection portion toward the rear as the second pressing force, (4) The resultant force transmission part includes a bending redundant part connected to the distal end of the lateral tooth row arrangement part, and an attachment fixing part connected to the bending redundant part and having the function of fixing to the maxillary molar, (5) A jaw position correction device capable of transmitting the resultant force of the first and second pressing forces to the maxillary molars via the attachment and fixing part; It has been found that by using this method, early contact with cusp interference is generated in the maxillary molars, and as a result, the patient's jaw position is reset to a relaxed state, the facial appearance is improved, and maxillary protrusion can be alleviated.

The invention provides a nest type three-dimensional all-point jaw frame device which is used for transferring the intra-oral jaw biting relation of a patient in complete denture repair and effectively simulating the movement track of a tooth tip staggered position interval of the patient. According to the device, three sectional guide compasses are additionally arranged on an upper jaw body base, and when a lower jaw body base is fixedly connected with a lower jaw branch assembly, two lower jaw branches and a cutting guide rod can be inserted into a corresponding condylar guide nest and a corresponding cutting guide nest to do reciprocating motion along a synchronous groove, and the indexing of the compasses is adjusted; and the operation state of all-directional sliding of the lower jaw dentition on the maxillary surface of the maxillary dentition in-position track can be effectively reflected, so that the movement track of the complete denture in a tooth tip staggered position interval is effectively simulated, and accurate and rapid jaw adjustment is realized. The device can also realize mutual switching between a tooth arrangement mode and a jaw adjustment mode by locking and switching the upper jaw body base and the lower jaw body assembly, and has good functionality and practicability.

On one hand, the utility model provides a dental instrument which comprises a first shell-shaped main body which is an integrated shell and forms a cavity for containing a first dentition of a patient, the first shell-shaped main body is configured to be exposed out of the first shell-shaped main body on the partial surface of the tongue side or the lip-cheek side of a first tooth, and the first dentition is an upper jaw dentition or a lower jaw dentition; a second shell-shaped body, which is an integral shell and forms a cavity for accommodating a second dentition of the patient, the second dentition being a jaw-to-jaw dentition of the first dentition; the first anchoring accessory is convexly arranged on the first shell-shaped main body or the second shell-shaped main body; the second anchoring accessory is mounted on the partial surface, exposed out of the shell-shaped main body, of the first tooth; and the elastic piece is mechanically matched with the first anchoring accessory and the second anchoring accessory to enable the first anchoring accessory and the second anchoring accessory to generate elastic deformation, so that the elastic piece applies correction force to the first tooth through the second anchoring accessory.

A mouth guard that is formed by molding into a shape that corresponds individual teeth of an maxillary dentition A or a mandibular dentition of a user, and is attached to the maxillary dentition A or the mandibular dentition of the user, the mouth guard having a thickness of 0.1 to 5.0 mm. A portion of the mouth guard that is positioned at a valley portion of at least one of a first molar D and a second molar E of the maxillary dentition A or the mandibular dentition is, when the mouth guard is attached to the maxillary dentition A or the mandibular dentition of the user, formed into a shape that forms a gap between the portion and the valley portion of at least one of the first molar D and the second molar E.

The embodiment of the utility model provides an orthodontic system for closing tooth gaps, which is used for being worn on an upper jaw dentition generating gaps after tooth extraction, and comprises a first tooth accommodating part for wrapping teeth in an anterior tooth area and a second tooth accommodating part for wrapping teeth in a posterior tooth area, the second tooth accommodating part comprises a first shell-shaped body which correspondingly wraps the teeth on the left side of the rear tooth area, a second shell-shaped body which correspondingly wraps the teeth on the right side of the rear tooth area, and a palate connecting part which is connected with the tongue side edge of the first shell-shaped body and the tongue side edge of the second shell-shaped body; a fixing part used for hanging an elastic piece is arranged on the lingual side face of the palate connecting part, a traction part is arranged on the first tooth containing part or the tooth surface, corresponding to teeth, of the first tooth containing part, and when the two ends of the elastic piece are hung on the traction part and the fixing part respectively, the elastic piece is hung on the elastic piece. The teeth wrapped by the first tooth storage part move towards the direction of the second tooth storage cavity.

The invention discloses a jaw position registration method, device and equipment based on multi-dimensional intraoral scanning data, and the method comprises the steps: reading upper and lower jaw scanning data and occlusion record data of a user, and obtaining an upper jaw dentition point cloud, a lower jaw dentition point cloud, a left buccal surface point cloud and a right buccal surface point cloud based on the upper and lower jaw scanning data and the occlusion record data; performing up-down left point cloud registration based on the maxillary dentition point cloud, the mandibular dentition point cloud and the left buccal surface point cloud, performing up-down right point cloud registration based on the maxillary dentition point cloud, the mandibular dentition point cloud and the right buccal surface point cloud, selecting an optimal registration path according to a left path and right path registration result, and obtaining a coarse registration model according to the optimal registration path; and iterating the pose of the degree of freedom of the coarse registration model to obtain a registration model, wherein the occlusion mass fraction Q of the registration model is maximum. The method solves the fundamental problem that the point clouds of the upper and lower jaws have no overlapping area and cannot be registered.

To provide an orthodontic appliance that can be used for treatment to move the maxillary dentition in the front-rear direction and can reduce the burden on a patient. [Solution] The orthodontic device 1 comprises a one-side posterior fixing portion 2 and an other-side posterior fixing portion 3 configured to be attached to one side and the other side of the maxilla A, respectively, based on the midline palatal suture C, a first adjustment portion 4 that can adjust the distance between the one-side posterior fixing portion 2 and the other-side posterior fixing portion 3, a one-side anterior fixing portion 5 and the other-side anterior fixing portion 6 configured to be attached to one side and the other side of the premaxilla B, respectively, based on the midline palatal suture C, a second adjustment portion 7 that can adjust the distance between the one-side posterior fixing portion 2 and the one-side anterior fixing portion 5, and a third adjustment portion 8 that can adjust the distance between the other-side posterior fixing portion 3 and the other-side anterior fixing portion 6.

The invention relates to a mandibular advancement device with a stabilizing structure. The mandibular advancement device comprises an upper tray assembly and a lower tray assembly, wherein the upper tray assembly is formed by an upper moldable part and an upper support, and the lower tray assembly is formed by a lower moldable part and a lower support. The front side edges, close to the lip side, of the upper support and the lower support extend to form a front wall, and at least the rear side edge, close to the tongue side, of the lower support extends to form a rear wall on the median sagittal plane. The stabilizing structure enables at least the front wall of the upper support to incline towards the lingual side and is used for being attached to the maxillary dentition when the patient is shaped. The rear wall of the lower support and the front wall clamp the mandibular dentition together and also have the function of preventing the lower moldable component from sliding off. In some cases, the stabilizing structure further comprises a molar clamping part, the molar clamping part at least comprises a front wall and a rear wall at the contact position of the upper bracket and the molar, and the mandibular advancement device is more stable through the design of the front wall and the rear wall of the part. The lower jaw advancing device is further provided with protrusions on the upper support and the lower support.

The invention relates to the technical field of maxillofacial region puncture guide plates, and discloses a dentition supporting type maxillofacial region puncture guide plate capable of accurately puncturing, which comprises an upper jaw dentition occlusion jaw plate, a mouth opener is fixedly mounted at the bottom of the upper jaw dentition occlusion jaw plate, and a puncture guide plate I is fixedly mounted on the side surface of the mouth opener; the side face of the first puncture guide plate is slidably connected with an angle control assembly. According to the dentition supporting type maxillofacial region puncture guide plate capable of achieving precise puncture, an angle control assembly is arranged on the side face of the first puncture guide plate, a puncture needle is arranged in the puncture guide plate, a worm is driven to rotate by rotating a rotary knob, and due to the fact that the worm is meshed with a turbine, an angle adjusting pipe is driven to rotate; if adjustment is needed in an operation, an operator can directly and finely adjust the knob, the puncture needle synchronously deflects in real time, and the puncture direction is convenient to adjust.

The utility model provides a mould for manufacturing a personalized silica gel appliance, which relates to the technical field of silica gel appliance preparation, and comprises an upper template, an injection template and a lower template, the surface of the upper template is provided with a corrected maxillary dentition model, the surface of the lower template is provided with a corrected mandibular dentition model, and the injection template is provided with a mandibular dentition model. The injection template is provided with a cavity, and an exhaust channel and an injection channel which are communicated with the cavity, and the exhaust channel and the injection channel are respectively positioned at the top end and the bottom end of the injection template; the upper template and the lower template are respectively buckled and fixed on the injection template, and the upper jaw dentition model and the lower jaw dentition model both extend into the cavity; according to the utility model, the upper jaw dentition model and the lower jaw dentition model are respectively arranged on the surfaces of the upper template and the lower template, so that when a machine needle is used for cutting, a cutting blind area can be avoided, and the forming precision of the appliance mold can be ensured.

The utility model relates to a mandibular advancement device with a stabilizing structure. The mandibular advancement device comprises an upper tray assembly and a lower tray assembly, wherein the upper tray assembly is formed by an upper moldable part and an upper support, and the lower tray assembly is formed by a lower moldable part and a lower support. The front side edges, close to the lip side, of the upper support and the lower support extend to form a front wall, and at least the rear side edge, close to the tongue side, of the lower support extends to form a rear wall on the median sagittal plane. The stabilizing structure enables at least the front wall of the upper support to incline towards the lingual side and is used for being attached to the maxillary dentition when the patient is shaped. The rear wall of the lower support and the front wall clamp the mandibular dentition together and also have the function of preventing the lower moldable component from sliding off. In some cases, the stabilizing structure further comprises a molar clamping part, the molar clamping part at least comprises a front wall and a rear wall at the contact position of the upper bracket and the molar, and the mandibular advancement device is more stable through the design of the front wall and the rear wall of the part. The lower jaw advancing device is further provided with protrusions on the upper support and the lower support.