60 results about "Maxillary tooth" patented technology

The invention discloses a CBCT tooth segmentation method and system based on an anatomical perception cascade network, and the method comprises the steps: a first stage, carrying out the simplified dichotomy segmentation based on an original CBCT image and a coarse segmentation network taking 3D U-Net as a trunk, outputting maxillary and mandibular tooth probability graphs, and taking the maxillary and mandibular tooth probability graphs as prior information to guide the generation of an SDM; in the second stage, the original CBCT image and the calibrated maxillary tooth probability graph and the calibrated mandibular tooth probability graph are spliced together, a formed multi-channel input tensor is input into a fine segmentation network, the fine segmentation network takes Residual U-Net as a trunk, and an improved AGBR module and an improved SDMAA module are integrated in an encoder-decoder architecture of the fine segmentation network; and the decoder fuses all refined and re-calibrated feature maps, and upsamples and reconstructs 42 types of instance segmentation results with correct topology and clear boundaries. According to the method, the problem that in the prior art, when the inherent and local boundary fuzzy defect in CBCT is overcome, an effective pertinence mechanism is lacked is solved, and precise and robust 42-class instance segmentation can be achieved.

The utility model discloses a dental system which comprises two correcting devices corresponding to the Nth correcting step and the (N + M) th correcting step, N and M are positive integers, each correcting device comprises a jaw plate structure connected with the upper jaw and the lower jaw, each jaw plate structure comprises a first part arranged corresponding to the upper jaw teeth and a second part arranged corresponding to the lower jaw teeth, and when the jaw plate structures are connected with the upper jaw and the lower jaw, the first part is connected with the first part. The first part and the second part abut against each other to form an abutting face, the two jaw plate structures corresponding to the two correctors have different parameters, and the different parameters are configured as follows: when the jaw plate structures are connected with the upper jaw and the lower jaw, the different parameters generate different acting forces and / or different moments. Different parameters can enable the two correctors to generate different acting forces and / or different moments, and the correction requirements of different correction steps are met through the different acting forces and / or the different moments.

The invention belongs to the technical field of medical instruments, and particularly relates to a multidirectional distraction osteogenesis correction system, in the multidirectional distraction osteogenesis correction system, the distance between a first fixing sleeve and a second fixing sleeve in supporting assemblies can be adjusted through a second traction assembly, and the distance between the two sets of supporting assemblies can be adjusted through a first traction assembly; the bilateral tooth-bone metastasis plate can be adjusted in the two-dimensional moving direction and the moving amount, the bilateral tooth-bone metastasis plate is allowed to move asymmetrically, transverse and sagittal differential distraction osteogenesis is achieved, and the bilateral tooth-bone metastasis plate is particularly suitable for cleft lip and palate patients with maxillary sagittal and transverse development insufficiency. According to the multidirectional distraction osteogenesis correction system, bilateral asymmetric distraction osteogenesis can be achieved, unilateral / bilateral alveolar process fractures of the front section of the maxillary dental arch are narrowed, the success rate of an alveolar process fracture bone grafting operation is increased, the alveolar bone mass of the middle section of the maxillary dental arch is increased, dentition congestion is relieved, space is provided for repair treatment, and the difficulty of subsequent treatment such as orthognathic surgery is reduced.

Embodiments of the present application relate to the field of digital processing, and disclose a display method and device of a hard palate appliance, an electronic device and a storage medium. The display method of the hard palate appliance in the present application comprises: obtaining information of a digital dental model, the information of the digital dental model at least including a maxillary tooth grid, a hard palate grid and a bite direction in tooth data of a case; calculating control points of teeth with preset numbers in the maxillary tooth grid; obtaining a grid model of a lower surface according to the control points and the hard palate grid; obtaining a grid model of an upper surface according to the grid model of the lower surface and the bite direction; generating a display model of the hard palate appliance according to the grid model of the lower surface and the grid model of the upper surface; and displaying the display model of the hard palate appliance. In the embodiments of the present application, the morphological characteristics of the hard palate appliance can be displayed.

This invention discloses a personalized Gothic arch component for dental implant restoration and a method for determining digital jaw position relationships, belonging to the field of medical device technology. The component includes a mandibular tracing needle fixation bracket, a tracing needle, a maxillary Gothic arch tracing plate, and fixing screws. The mandibular tracing needle fixation bracket comprises a Y-shaped tracing needle positioning frame and a personalized implant fixation bracket. The tracing needle is fitted into the central groove of the mandibular tracing needle fixation bracket via a shaft-hole fitting structure. The maxillary Gothic arch tracing plate is U-shaped and adapts to the maxillary dental arch. Both the mandibular tracing needle fixation bracket and the maxillary Gothic arch tracing plate are provided with screw channels for matching fixing screws. The method for determining digital jaw position relationships includes: taking a digital impression; designing and 3D printing the above components using CAD / CAM; determining the vertical distance and centric relationship using the personalized Gothic arch; and transferring the maxillary-mandibular relationship for edentulous full-mouth implant restoration based on occlusal records and electronic facebow data, thereby improving the clinical applicability of the restoration.

Disclosed in the present invention is a dental system, comprising two appliances corresponding to an N-th orthodontic treatment step and an (N+M)-th orthodontic treatment step, wherein N and M are both positive integers; each appliance comprises an occlusal plate structure connected to maxillary and mandibular arches; each occlusal plate structure comprises first portions arranged corresponding to maxillary teeth, and second portions arranged corresponding to mandibular teeth; when the occlusal plate structure is connected to the maxillary and mandibular arches, the first portions and the second portions abut against each other to form abutting surfaces; the two occlusal plate structures corresponding to the two appliances have different parameters; and the different parameters are configured to generate different acting forces and / or different torque when the occlusal plate structures are connected to the maxillary and mandibular arches. Different parameters of the present invention can enable two appliances to generate different acting forces and / or different torque, thereby satisfying orthodontic treatment requirements of different orthodontic treatment steps by means of the different acting forces and / or different torque.

According to the design and manufacturing method of the orthodontic postoperative intermaxillary traction device based on the invisible orthodontic device, CT scanning is conducted on a patient, craniomaxillofacial and tooth three-dimensional data are collected, and preparation is made for obtaining three-dimensional virtual tooth data of the patient through manufacturing of an anhydrite tooth model; data of a patient are imported into cranio-maxillofacial surgical operation planning software, a cranio-jaw virtual model of the patient is established, a manufactured anhydrite tooth model is subjected to three-dimensional scanning, dentition data are obtained, a maxillary tooth bone section is moved to a target position through a simulated operation on the virtual cranio-jaw model, and the patient is subjected to cranio-maxillofacial surgical operation planning software. And then determining a target position of a mandibular tooth bone section based on a final occlusion relationship, importing dentition data of the patient into three-dimensional virtual design software, performing Boolean operation, and manufacturing a traction device by using a three-dimensional printing technology. According to the device, assistance of methods such as a dental arch splint and an intermaxillary traction nail is not needed, intermaxillary elastic traction can be carried out after an invisible orthodontic patient completes a orthodontic operation, and it is ensured that the occlusion relation after the orthodontic operation meets the requirement.

To provide an improved mouthguard A that allows users to drink water without using their hands while wearing it in their mouth, even while riding a motorcycle, bicycle, or other vehicle. [Solution] The present invention provides an improved mouthguard that allows drinking water to be performed while being worn in the mouth of a person, comprising a mouthguard body 1 that abuts against the upper jaw teeth and a water passage 2 attached to the mouthguard body 1, through which water can be supplied to the mouth, the mouthguard body 1 has an inner wall portion 13 that encloses and holds the upper jaw teeth, an outer wall portion 14 and a bottom wall portion 15 that connects the two, the outer wall portion 14 has a bulging portion 14A that bulges outward and is provided in the bulging portion 14A for insertion of the water passage 2, and the tip portion 22 of the water passage 2 is housed in the bulging portion 14A, the improved mouthguard A.

A clear aligner, comprising a shell-shaped body and a tongue muscle training member, wherein the shell-shaped body has a cavity for accommodating a plurality of maxillary teeth; and the tongue muscle training member is connected to the lingual gingival margin of the shell-shaped body or adjacent to the gingival margin, and has a sensing cavity and a sensing port exposing the sensing cavity, the sensing port being located on the lingual side of the tongue muscle training member. A user trains tongue muscles by touching the sensing port with their tongue and partially extending their tongue into the sensing cavity, such that a relatively good sense of experience and enjoyment are provided, the enthusiasm of the user for training can be stimulated, and a tongue muscle training effect is improved.

The invention provides an occlusion induction appliance for a tooth replacement period, an orthodontic system for guiding jaw growth in the tooth replacement period and a design method of the orthodontic system. The occlusion induction appliance for the tooth replacement period comprises an upper jaw tooth socket and a lower jaw tooth socket, a lower jaw brace; the intermaxillary connecting body is positioned between the occlusal surfaces of the back tooth areas of the upper jaw tooth socket and the lower jaw tooth socket; wherein the upper jaw tooth socket and the lower jaw tooth socket form a rigid integral structure which cannot move relatively on an occlusal surface through the intermaxillary connector; the intermaxillary connecting body has a preset thickness so as to open occlusion contact of upper and lower anterior teeth in a wearing state, and the intermaxillary connecting body is configured to lock the lower jaw tooth socket at a preset three-dimensional space position relative to the upper jaw tooth socket body; when the occlusion induction appliance for the tooth replacement period is worn, the upper dentition and the lower dentition serve as integral interactive anchorage, and the occlusion force is converted into the orthodontic force acting on the dentition or the jaw bone.

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.

The invention relates to the technical field of oral cavity plastic surgery, in particular to a manufacturing method of a digital buckle type guide plate for dental crown lengthening, which comprises the following steps of: 1, scanning an upper jaw dental arch and a lower jaw dental arch of a patient to obtain intraoral scanning data, recording an occlusion relationship at a maximum tooth tip staggering position, and exporting the data for later use; step 2, acquiring facial three-dimensional scanning data, alveolar bone and craniofacial structure data, digital facial arch data, mandibular position and mandibular movement parameters of the patient; 3, fitting various data to determine ideal gingival margin position parameters and bone trimming contour line parameters required in the operation; and 4, on the basis of the parameters determined in the step 3, buckle type guide plates are designed in design software, the buckle type guide plates comprise a gingival resection guide plate and an osteoplasty guide plate, and finally the buckle type guide plates are printed through a 3D printer. By implementing the buckle type guide plate prepared by the method, the stability, the accuracy, the operation convenience and the operation efficiency in the operation process of the dental crown extension surgery are remarkably improved.

This is a dental measuring tool used to check the degree of tooth grinding when grinding and capping teeth. As shown in the "Reference Front View," this tool consists of a gripping portion, an interocclusal measurement portion, and a grinding shoulder measurement portion. For example, when grinding and capping a lower jaw tooth, as shown in "Reference Figure 1 Showing the State of Use," the tip of the interocclusal measurement portion is inserted between the ground lower jaw tooth and the upper jaw tooth to measure the gap. Furthermore, as shown in "Reference Figure 2 Showing the State of Use," the grinding shoulder measurement portion is placed along the ground lower jaw tooth, and the shoulder (foot-like portion) of the lower jaw tooth is measured using the tip diameter of the grinding shoulder measurement portion, and the height of the lower jaw tooth is measured using the scale on the grinding shoulder measurement portion.

A mandible adjustment device comprises an upper teeth brace and a lower teeth brace wherein the upper teeth brace and the lower teeth brace have an upper teeth accommodation space and a lower teeth accommodation space, respectively: the upper teeth accommodation space and the lower teeth accommodation space are developed according to a user's dental pattern for matching a human being's maxillary dental arch and mandible dental arch, respectively; the upper teeth brace and the lower teeth brace laterally extend a mucosa protection device opposite to an upper molar area and a positioning part opposite to a lower molar area, respectively. The upper teeth brace and the lower teeth brace, both of which have been installed, drive the positioning part and the mucosa protection device to combine each other and keep a flexible displacement space for neither discomfort at a condyle of the mandible.

The application discloses a method, device and equipment for establishing a virtual jaw frame, acquires a medical image of a patient, determines anatomic related mark points and upper and lower dental arch key points from the medical image, establishes a virtual cranial maxillary coordinate system and a mandibular coordinate system according to the anatomic related mark points, and determines the positions of the upper and lower dental arch key points in the coordinate system. The upper dental arch key points in a laser scanning tooth model of the patient are aligned with the same key points in the cranial maxillary coordinate system, and the laser scanning tooth model is added to the cranial maxillary coordinate system. The lower dental arch key points in the laser scanning tooth model are aligned with the same key points in the mandibular coordinate system, and the laser scanning tooth model is added to the mandibular coordinate system. Any point in the upper and lower dental arches in the laser scanning tooth model can be found in the corresponding position in the cranial maxillary coordinate system or the mandibular coordinate system, a highly personalized virtual jaw frame is established in a digital way, and the real situation of the patient is simulated in the morphological aspect to the maximum extent.

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.

In CT visualization software, zones of the right and left temporomandibular joints (TMJs) are visualized sequentially. In a frontal plane, each of the condylar processes of the TMJs are delimited into sections. In a sagittal plane, separate 3D contours of the fossae and the condyles of the TMJs are created. The contours of the condyles are combined with a 3D model of the mandibular teeth, and a 3D model of the mandible with the teeth and the condylar processes is obtained. The contours of the fossae are combined with a 3D model of the maxillary teeth, and a 3D model of the maxilla with the teeth and the contours of the glenoid fossae is obtained. The 3D scene objects obtained are distributed according to side and identification code, and precise tracking of the movement of the condyles and the fossae of the TMJs during movement of the mandible is provided.

Mandibular repositioning devices providing downward movement as well as forward movement of the mandible have a maxillary tooth covering having a driver flange protruding laterally outward on one or both sides thereof and have a mandibular tooth covering having a protrusive flange extending cranially therefrom positioned to have a posterior side engaged with the anterior side of each driver flange. The anterior side of each driver flange has a convex curvature. The posterior side of each protrusive flange has a concave-to-convex curvature positioned to move the convex portion thereof along the convex curvature of the driver flange when the mouth opens, which also moves the mandible forward. A plateau of a preselected height, which prevents disconnect between each protrusive flange and its respective driver flange relative to a fully open mouth measurement, is present between the base of the protrusive flange and the tooth covering.

The invention relates to an appliance used for orthodontic treatment on the maxillary dental arch for bringing one or more teeth into the correct positions by applying forces in the palatal direction. With the appliance design subject to the invention, tooth / teeth movements in sagittal, vertical, and transverse directions are achieved.

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.

The utility model discloses a kind of oral cavity anterior tooth reverse V-shaped corrector, comprising: base plate, it is U-shaped and its outer end is equipped with first lip arch and second lip arch being set up upside and downside, the middle position of base plate is equipped with expander and the top surface of its outer end is equipped with several push spring for promoting maxillary teeth to outside;Tongue grid, it is used to separate tongue and mandibular teeth, and tongue grid is fixed on the bottom surface of the outer end of base plate;Two arrowhead clasp, it is used for the fixation of maxillary upper base plate, two arrowhead clasp are respectively fixed on the two ends of inner end of base plate, and two arrowhead clasp are symmetrically set relative to base plate left and right. The utility model can reduce the pushing strength of tongue to mandibular teeth, strengthen the pushing correction strength to maxillary teeth, thereby guarantee the use effect of corrector.

This invention provides an invisible orthodontic appliance with an oblique guide module, including an upper brace and a lower brace adapted to the upper brace. An oblique guide module is fixedly disposed on the lingual side of one of the upper or lower braces. The tooth side of the oblique guide module has an occlusal surface, which cooperates with the lingual surface of the other brace. By setting the oblique guide module, the occlusal surface is set on the tooth side, and then cooperates with the lingual surface of the corresponding brace for correction. The appliance has minimal foreign body sensation and is comfortable to wear.

A mandibular advancement device is described, and may include an upper portion for fitting to maxillary teeth and a lower portion for fitting to mandibular teeth. The system may include one or more connecting bars, which may be provided in varying lengths, that allow the upper portion and lower portion to be pivotably connected such that horizontal and vertical articulation are possible. A kit is also described, which may allow a user to mold the device to their teeth and select from a plurality of connecting bars having different lengths.

A surgical device for intermaxillary fixation that shortens operating time, reduces the risk of lacerations and puncture wounds for the surgeon, and results in lower patient morbidity. It consists of a clamp or clasp made of titanium, surgical steel, or another biocompatible material, the free ends of which are positioned in the interdental space. One end of the clamp is placed in the interdental space of the maxilla and the other end in the interdental space of the mandible, so that once inserted, the clamp secures or fixes the maxilla to the mandible, preventing the patient from moving or opening it, thus achieving the goal of intermaxillary fixation. This clamp or device is operated and manipulated using forceps for easy application and removal from the teeth.

The utility model provides a snore preventing device which comprises an upper jaw tooth socket, a lower jaw tooth socket, a first positioning piece arranged on the upper jaw tooth socket, a second positioning piece arranged on the lower jaw tooth socket and matched with the first positioning piece, and a retaining jaw block fixedly arranged on the upper jaw tooth socket and used for preventing the lower jaw from retreating. The retaining jaw block is located behind the first positioning piece, the structure is simple, no additional assembly sliding block is needed, the retaining jaw block is integrally formed, and no additional assembly is needed; light foreign body sensation is small, and cleaning and carrying are convenient.

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.

A digital intermaxillary relationship recording device for denture fabrication is disclosed, which completes the acquisition of intermaxillary relationships necessary for denture fabrication during the patient's first visit, determines the aesthetic position of the anterior teeth using a facial scanner, and allows for the accurate fabrication and provision of dentures on the same day or in two visits. One aspect of the present invention of the digital intermaxillary relationship recording device for denture fabrication includes a maxillary plate on which impression material is provided on the upper surface so as to be able to acquire an impression of the maxillary gums, a mandibular plate on which impression material is provided on the lower surface so as to be able to acquire an impression of the mandibular gums, and an anterior tooth guide member which can be detachably coupled to the anterior end of the maxillary plate, can acquire an index relationship with the lips after coupling, and can reproduce the aesthetic position of the anterior teeth via a facial scanner in the coupled state.

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.