52 results about "Posterior Tooth" patented technology

The invention discloses a digital stable jaw pad designing and manufacturing method, and relates to the technical field of oral rehabilitation and digital medical technology.The digital stable jaw pad manufacturing method comprises the following steps that a, three-dimensional point cloud data of oral dentition and mucosa of a patient is obtained through a three-dimensional scanner; b) determining a stable jaw position coordinate model by using an optical motion capture system; c) designing a jaw pad three-dimensional entity model with an anterior tooth area, a posterior tooth area and an edge structure based on the three-dimensional point cloud data and the stable jaw coordinate model; and d) manufacturing the jaw pad through 3D printing equipment, wherein the 3D printing equipment is formed by adopting a polyether-ether-ketone material. By integrating digital acquisition, design and manufacturing technologies, the pain point of a traditional method is solved, and personalized, high-precision and rapid manufacturing of the stable jaw pad is realized.

The invention provides a guide plate system for full-thickness splitting of a palate center seam and a manufacturing method of the guide plate system. The guide plate system comprises a front guide plate and a palate guide plate, the front guide plate comprises a front tooth area retention part and a front guide part, the front tooth area retention part is matched with an upper jaw front tooth area to limit the intraoperative position of the front guide plate, and the front guide part is provided with a front guide window which limits a vestibular sulcus area osteotomy line; the palate guide plate comprises a posterior tooth area fixing part and a palate guide part and limits a mucous membrane containing space, the posterior tooth area fixing part is matched with maxillary posterior teeth and part of palate mucous membrane to limit the intraoperative position of the palate guide plate, and the palate guide part is provided with a palate guide window which limits an osteotomy line of a palate center joint.

The invention provides a bur for preparing the lower gingival edge of a posterior tooth area, and relates to the technical field of dental bur, the bur comprises a working part and a handle part, the working part comprises a head part and a neck part, the neck part is connected between the head part and the handle part, and the head part comprises a round head part, a gradually-expanding part, an arc part and a gradually-shrinking part which are sequentially arranged from front to back; the joint of the arc part and the tapered part reaches the maximum diameter, the distance between the joint and the tail end of the head part is smaller than that between the joint and the front end of the head part, a cutting edge is arranged on the periphery of the divergent part and forms a cutting area, and the arc part and the tapered part are provided with smooth surfaces and form a guide area; the problems that in the prior art, a conventional machine needle does not have a targeted structural design for preparation of lower teeth of posterior gingiva, the operability is poor, and the trauma risk is high are solved.

Provided is an orthodontic appliance, comprising a fixed base (1) that can be bonded and fixed to a tooth surface, a movable wing (2), and a spring (3). The movable wing (2) is slidably positioned on the fixed base (1); a bottom surface of the fixed base (1) is machined with a bonding pattern, one end of the surface is machined with a wing base (12), and the middle of the wing base (12) is provided with a sliding groove (121) in a direction of the central plane; the movable wing (2) comprises an occlusal splint (21) and a sliding rod (22), and the sliding rod (22) is positioned in the sliding groove (121) and can move back and forth along the sliding groove (121); the spring (3) is sleeved on the sliding rod (22), and one end of the spring (3) abuts against the wing base (12) and always maintains a tendency in which the movable wing (2) is away from the wing base (12); the occlusal splint (21) can move toward the wing base (12) end under the driving of the tooth occlusal force and generate an orthodontic thrust on the wing base (12) by means of the spring (3). Using the occlusal splint (21) on the movable wing (2), the occlusal force generated by each occlusal action is picked up and converted into an adduction force on the anterior teeth, thereby forming a dynamic orthodontic process and minimizing the impact on the posterior teeth.

The application discloses a segmented orthodontic appliance for vertical non-adjustment of anterior and posterior teeth, comprising an anterior tooth mouth body and a posterior tooth mouth body, the anterior tooth mouth body comprises a plurality of anterior tooth wrapping bodies, adjacent anterior tooth wrapping bodies are rigidly connected or connected through force arms, the posterior tooth mouth body comprises a plurality of posterior tooth wrapping bodies, adjacent anterior tooth wrapping bodies are rigidly connected or connected through force arms; the anterior tooth mouth body and the posterior tooth mouth body are rigidly connected or connected through force arms; the force arms are used for directional force on the anterior teeth and / or the posterior teeth, and / or the force arms are used for force on the buccal side and / or the lingual side; there are at least two force arms, and there are at least one anterior tooth wrapping body or at least one posterior tooth wrapping body between adjacent force arms. The application adds a specific stress interruption mechanical structure in the middle segment of the tooth arch of the invisible appliance, so that the force mode of the appliance is optimized, and the treatment efficiency of the vertical non-adjustment of the anterior and posterior teeth is improved.

The application discloses a design method of a jaw pad, a manufacturing method of an invisible orthodontic appliance and the invisible orthodontic appliance, and belongs to the technical field of tooth correction. The disclosed design method comprises the following steps: acquiring a digital dental and jaw model, wherein the digital dental and jaw model at least comprises a maxillary model, a mandibular model and a first occlusal model; constructing a second occlusal model according to the first occlusal model, wherein the second occlusal model comprises complete occlusal relationship information, and the occlusal relationship information at least comprises occlusal space parameters; determining a jaw pad setting area according to a comparison result of the occlusal space parameters and a preset occlusal threshold value, and forming a jaw pad on the jaw pad setting area, wherein the jaw pad is a structure capable of opening posterior teeth occlusion and is formed by closely connecting a plurality of ellipsoidal structures. The disclosed manufacturing method of the invisible orthodontic appliance and the corresponding invisible orthodontic appliance are both based on the disclosed design method. The application can design a reasonable structure of the appliance without depending too much on the experience of designers.

The utility model relates to the technical field of orthodontic medical instruments, in particular to an invisible appliance with a jaw pad, which comprises an upper jaw appliance and a lower jaw appliance which are used for accommodating teeth, the jaw pad is arranged in a rear tooth area of the upper jaw appliance, the jaw pad is of a hollow structure protruding towards the opposite jaw direction, and the lower jaw pad is of a hollow structure protruding towards the opposite jaw direction. The jaw pad is matched with the occlusal surface of the occlusal teeth in an opposite occlusal manner; the width of the side, close to the anterior tooth end, of the jaw pad is smaller than that of the side, close to the posterior tooth end, of the jaw pad, the two side edges, in the dentition direction, of the jaw pad are each provided with a plurality of first inwards-concave structures, and the first inwards-concave structures are symmetrically arranged on the two sides of the jaw pad. According to the invisible orthodontic appliance disclosed by the utility model, the first concave structures are arranged on the two sides of the jaw pad along the arrangement direction of dentition to form reinforcing structures, so that the structural strength can be effectively enhanced, and meanwhile, the second concave structures are respectively arranged at the two ends of the jaw pad, so that the strength of the jaw pad is further improved, the occlusion strength of a tooth socket is improved, and the orthodontic effect can be effectively improved.

The utility model relates to the technical field of orthodontic instruments, in particular to a chiffon-type open retainer for retaining after orthodontic treatment, which comprises an upper jaw component and a lower jaw component, and each of the upper jaw component and the lower jaw component comprises a base plate, a hyperbolic labial arch, a connecting steel wire and a snap ring. The clamping ring and the hyperbolic labial arch are integrally formed and arranged on the two sides of the hyperbolic labial arch, the hyperbolic labial arch and the clamping ring are arranged around the closed end of the base plate and connected with the base plate through a connecting steel wire, and the end, away from the hyperbolic labial arch, of the clamping ring extends into the base plate; a tongue grating is arranged on the base of the upper jaw assembly, and a rear tooth jaw pad is arranged on the base of the lower jaw assembly. The retainer disclosed by the utility model can maintain the stability of tooth arrangement, restrain the recurrence trend, assist in controlling jaw position change and improve the long-term stability of orthodontic treatment.

The invention relates to the technical field of orthodontics, in particular to a buccal side embedded canine tooth traction guide plate and a traction method thereof.The traction guide plate comprises a fixing end and a traction end, the fixing end is of a rectangular structure, the fixing end is fixed to an orthodontic bracket and an orthodontic arch wire on rear teeth through metal ligature wires, and the traction end is connected with the metal ligature wires. A traction end is mounted on the side, close to the embedded teeth, of the fixed end, the traction end is of a bent arc-shaped structure, a first traction position and a second traction position are arranged on the traction end, and the traction end is connected with a traction site bonded to the embedded canine teeth through an elastic rubber chain so as to pull the embedded canine teeth; according to the invention, the arc-shaped traction end with the first traction position and the second traction position is designed, the first hook is utilized to realize inclined movement of the embedded canine from the embedded position to the target area in the first stage, and the plurality of second hooks are utilized to realize vertical positioning and fine position adjustment of the teeth in the second stage; the accuracy and controllability of a tooth moving path are improved, and the treatment period is shortened.

The invention discloses an oral implant bone splitting chisel and a use method, the chisel comprises a holding part, a buffer area and a working head part which are distributed in a T-shaped structure; the holding part is a rod body and is provided with an anti-slip structure on the surface, and the axis is vertically and fixedly connected with the axis of the buffer area; the working head comprises a guide face and a guide blade, the splitting blade is of a wedge-shaped structure, a cutting edge is arc-shaped, arc-shaped transition faces are arranged on the two sides of the cutting edge, fillet transition is arranged at the tip end, the thickness of the cutting edge is gradually increased from the tip end to the root portion, and the holding portion and the buffer area are of an integral or detachable structure. The holding stability is improved through the T-shaped structure, bone tissue friction and damage are reduced through the design of the arc-shaped cutting edges and the round corners, the detachable working head can meet the requirements of different operation areas (a straight neck is used for an anterior tooth area, and a bent neck is used for a posterior tooth area), and multi-direction precise bone splitting is achieved; the use method is adaptive to different alveolar bone forms and bone cortex thicknesses, the operation steps are standard and controllable, the cleavage range is effectively controlled, the operation risk is reduced, the safety and convenience of the implant surgery are improved, and the device is suitable for various oral implant bone cleavage surgeries.

The invention relates to the technical field of orthodontics, in particular to an appliance suitable for low-angle Angle class II classification 2 patients. Comprising a base plate covering a palatal soft tissue area of an anterior tooth area of an upper jaw, a built-in spiral arch expander, a long arrow clamp and an adjacent hook which are arranged in a posterior tooth area of the upper jaw, a hyperbolic labial arch which is arranged on the labial side of the anterior tooth and of which the tail end is fixed in the base plate, and an elastic supporting piece arranged on the palatal side, one end of the elastic supporting piece is a fixed end, the other end is a free end, the fixed end is inserted and fixed in the base plate, and the free end points to and lightly touches the palate side of the upper anterior teeth; an anatomical flat guide face matched with lower teeth is arranged at the position, making contact with the lower teeth, of the base plate, and a guide groove used for guiding the lower front teeth to be limited front and back is formed in the lip side of the anatomical flat guide face. The lip side of the base support is further provided with an incisor tooth cap used for guiding left and right retention of lower jaw incisor teeth, and the guiding groove and the incisor tooth cap are matched with the anatomical form of a lower tooth body.

The utility model relates to the field of orthodontic positioners, and provides an orthodontic positioner for assisting in mounting a buccal tube, so as to solve the problems that the bonding accuracy of an existing buccal tube is easily influenced by clinical experience of doctors, and the buccal tube is easily influenced by a visual field environment when being mounted in a rear tooth area, so that positioning deviation is caused. The dental pad comprises a jaw pad part which is matched with the outer contour of a dental crown and is used for being arranged on the dental crown in a covering manner; the clamping part is arranged at one end of the jaw pad part and located on the outer side of the tooth surface, a mounting groove is formed in the side, close to the tooth surface, of the clamping part and used for mounting a buccal tube, clamping arms are arranged at the two ends of the mounting groove, buckles matched with the clamping grooves in the two ends of the buccal tube are arranged on the two clamping arms respectively, and the buccal tube is clamped in the buckles. The clamping arm clamps the clamping groove of the buccal tube through the buckle so as to clamp the buccal tube.

The invention discloses a 3D printing correction device for correcting unilateral positive locking in a tooth replacement period. The 3D printing correction device comprises an upper jaw correction assembly and a lower jaw correction assembly, the maxillary orthodontic component comprises a 3D printing metal linked crown matched with the orthodontic side dentition, a resin base matched with the non-orthodontic side and the palate side, and a spiral expansion device connected with the 3D printing metal linked crown and the resin base, and the spiral expansion device is configured to apply an arch contraction force to the orthodontic side dentition; the lower jaw correction assembly comprises a lower jaw 3D printing metal support and a lower jaw resin retention layer, the lower jaw 3D printing metal support forms a metal belt ring structure on the non-positive locking side and extends on the positive locking side to form a long arm hook structure, and the outer surface of the metal belt ring structure and the surfaces of teeth on the non-positive locking side are coated with the lower jaw resin retention layer. According to the invention, digital design and 3D printing technology customization are utilized, the device is fixed in the mouth through an adhesive, and the device has the characteristics of good retention force, small size, low compliance to patients, and capability of effectively preventing extension of rear teeth and shortening the treatment period.

The utility model discloses a scanning and positioning assembly for oral implantation and a scanning and positioning device for edentulous jaw implantation. The scanning and positioning assembly comprises a scanning main body and at least one positioning piece, the scanning main body comprises a scanning part and an interface part which are sequentially arranged from top to bottom, and one end of the positioning piece is arranged on the periphery of the scanning part in a sleeving manner; by the adoption of the technology, the accuracy of intraoral scanning is remarkably improved, and a more reliable data basis is provided for follow-up oral cavity restoration work; besides, the connecting structure of the scanning main body and the positioning piece is simple, the positioning piece can be conveniently connected in the limited space in the oral cavity, especially the position of the rear alveolar tooth, the preparation time before scanning is greatly shortened, and the efficiency of scanning work is improved; and meanwhile, the operation difficulty and the probability of misoperation are reduced, and even an operator with relatively insufficient experience can smoothly complete the connection operation.

This invention discloses a shell-shaped dental instrument, comprising maxillary and mandibular shell-shaped bodies and a repositioning occlusal element assembly, which includes a first repositioning occlusal element and a second repositioning occlusal element. These repositioning occlusal elements are disposed on the same side, respectively connected to the buccal or lingual surfaces of the left and right sides of the posterior tooth region of the maxillary and mandibular shell-shaped bodies. The first repositioning occlusal element includes a first fixing portion, a first connecting portion, and a first locking portion, which together form a first receiving space; the second repositioning occlusal element includes a second fixing portion, a second connecting portion, and a second locking portion, which together form a second receiving space. During wear, the first locking portion is received within the second receiving space, and the second locking portion is received within the first receiving space, with their free ends abutting against each other in the sagittal direction. Furthermore, the first fixing portion, the second locking portion, the first locking portion, and the second fixing portion abut against each other sequentially in the gingival-maxillary direction. This invention also provides an orthodontic system.

The utility model relates to a cold compress analgesic device for postoperative nursing of oral cavity, including gauze mask unit, a plurality of cold compress units, a plurality of analgesic units, first fixed unit and second fixed unit. Its advantage lies in, and the gauze mask unit is worn in the place of suffering with the gauze mask form to carry out analgesia and cold compress with analgesic unit, cold compress unit respectively with gauze mask unit is detachably connected, and utilizes first fixed unit and second fixed unit, not only can liberate patient's both hands, and can be closely combined with the place of suffering, and the use is flexible, convenient, and the cold compress, analgesic effect is good, and the gauze mask unit is set up in the region, can carry out cold compress and analgesia to maxillary region, mandibular anterior tooth area, mandibular posterior tooth area respectively, improves patient's comfort.

The utility model discloses a shell-shaped dental instrument which comprises an upper jaw shell-shaped body, a lower jaw shell-shaped body and a repositioning jaw element assembly, and the repositioning jaw element assembly comprises a first repositioning jaw element and a second repositioning jaw element. And the repositioning jaw elements are arranged on the same side and are respectively connected to cheek side surfaces or lingual side surfaces on the left and right sides of the back tooth areas of the upper jaw shell-shaped body and the lower jaw shell-shaped body. The first repositioning jaw element comprises a first fixing part, a first connecting part and a first locking part which are enclosed to form a first accommodating space; the second repositioning jaw element comprises a second fixing part, a second connecting part and a second locking part which are enclosed to form a second accommodating space; during wearing, the first locking part is contained in the second containing space, the second locking part is contained in the first containing space, the free ends of the first locking part and the second locking part abut against each other in the sagittal direction, and the first fixing part, the second locking part, the first locking part and the second fixing part abut against each other in the gingival jaw direction in sequence. The utility model further provides a correction system.

The invention discloses a bracket-free invisible appliance with a lower jaw leading-forward function. The bracket-free invisible appliance comprises an upper jaw appliance body and a lower jaw appliance body, convex bubbles are arranged on the cheek side surfaces of the rear tooth areas of the upper jaw appliance body and the lower jaw appliance body, the convex bubbles are wide in lower parts and narrow in upper parts, the cross sections of the convex bubbles are gradually narrowed along the jaw aligning direction, and concave step reinforcing ribs are arranged on the cheek side surfaces of the convex bubbles; the convex bubbles are arc-shaped, convex upwards and concave downwards, and the radian is gradually increased in the vertical direction from bottom to top; the slope side faces of the upper jaw appliance body and the lower jaw appliance body are force application faces, when the upper jaw and the lower jaw are meshed together, the mesial slope side face of the convex bubble of the upper jaw appliance makes contact with the mesial slope side face of the convex bubble of the lower jaw appliance to serve as a contact face, and the contact face is an irregular curved face. Other areas of the bottom surfaces of the convex bubbles of the upper jaw appliance body and the lower jaw appliance body are in smooth transition connection with tooth surfaces of corresponding upper and lower jaw rear teeth and are provided with connecting blocks.

The utility model provides a novel invisible orthodontic appliance for integrally adducting anterior teeth in a tooth extraction case, which comprises a bracket-free invisible orthodontic appliance body, the thickness of a rear tooth area of the bracket-free invisible orthodontic appliance body is increased by 0.1-0.25 mm on the basis of the original uniform thickness, the thickness of a distal surface of a second molar is increased by 0.15-0.25 mm, and the thickness of the rear tooth area of the bracket-free invisible orthodontic appliance body is increased by 0.1-0.25 mm on the basis of the original uniform thickness of the bracket-free invisible orthodontic appliance body. According to the bracket-free invisible orthodontic appliance body, a falling prevention piece is designed at a tooth extraction position of the invisible orthodontic appliance, the falling prevention piece is wider in a position close to an occlusal surface and narrower in a position close to a gum, and the size of the falling prevention piece is matched with the change of a gap of the tooth extraction position. According to the application, the back tooth area is thickened on the basis of the original uniform thickness, and the distal surface of the second molar is thickened, so that the anchorage of the back tooth area can be enhanced, and meanwhile, as for the inclination of adjacent teeth in the tooth extraction gap, the anti-collapse piece which is wider in the position close to the occlusal surface and narrower in the position close to the gum is designed at the tooth extraction position; therefore, when the dental crowns of the adjacent teeth on the two sides incline towards the tooth extraction gap, the anti-tilting piece can generate an inclination resisting effect. According to the invention, through the optimal design of the accurate non-uniform thickness, the correction efficiency of the tooth extraction case can be improved.

The utility model provides an appliance for treating class II high angle mandibular retraction, which comprises an intraoral device and an extraoral device, the extraoral device comprises an improved chin pocket and a head anchorage, the improved chin pocket is used for contacting with a mandibular to be corrected, a connecting rod is arranged on the improved chin pocket, a support is arranged on the head anchorage, a plurality of traction hooks are arranged on the support, and the traction hooks are connected with the connecting rod. The connecting rod is connected with a traction hook through an elastic traction rubber band; the intraoral device is a jaw pad arranged at the rear teeth of the lower jaw; the jaw pad forms a fulcrum at the rear teeth of the lower jaw, the head anchorage generates forward traction force to the improved chin pocket through the elastic traction rubber band and the traction hook, the jaw pad is matched with chewing of a patient, the effect of pressing the rear teeth is generated when the upper jaw and the lower jaw are in occlusion contact, and the lower jaw is guided to grow forwards and upwards to treat the rear shrinkage face type of the lower jaw. The effects of lowering back teeth, improving the high angle trend and correcting the forward leaning posture of the cranium and the neck can be achieved, the treatment period is greatly shortened, and the treatment effect is greatly improved.

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.

The front tooth guide plate type magnetic open-face retainer comprises a first tooth socket and a second tooth socket opposite to the jaw, the rear tooth occlusal surfaces and the front tooth incisal ends of the first tooth socket and the second tooth socket are provided with windowing structures, and the front tooth tongue side of the first tooth socket is provided with a first front tooth guide plate. A second anterior tooth guide plate opposite to the first anterior tooth guide plate is arranged on the anterior tooth tongue side of the second tooth socket; and opposite magnets which are magnetically attracted are respectively arranged on the first anterior tooth guide plate and the second anterior tooth guide plate. The anterior tooth guide plate has the beneficial effects that a tooth position and jaw position dual-maintaining effect can be achieved, the complete dentition is wrapped to prevent recurrence such as crowding, twisting and gaps, meanwhile, the lower jaw reconstruction position and the occlusion relation can be maintained through the anterior tooth guide plate and the magnetic force of the magnet, meanwhile, the anterior tooth guide plate can also control the vertical growth trend of teeth of a deep overjaw patient, and the aim of maintaining the tooth position and the jaw position is achieved. Recurrence of deep overjaw is prevented; manufacturing is easy, time can be saved, efficiency is improved, and commercialization is facilitated.

The utility model discloses a dental instrument. The dental instrument comprises an anchorage module, a segment type shell-shaped body, a first traction part arranged on the anchorage module and a second traction part arranged on the segment type shell-shaped body or teeth in an anterior tooth area, the anchorage module is connected to teeth in the posterior tooth areas of a patient in a matched mode and comprises a first retention connected crown, a second retention connected crown and a palate connecting rod which are connected to the posterior tooth areas on the left side and the right side of the patient in a matched mode respectively, the first retention connected crown is fixedly arranged on the first tooth in a sleeving mode, and the second retention connected crown is fixedly arranged on the second tooth in a sleeving mode. The first teeth and the second teeth corresponding to the rear tooth areas on the left side and the right side are bound into a whole through the palate connecting rod to form an integral anchorage; the fragment type shell-shaped body is used for binding teeth in an anterior tooth area of a patient into a whole and comprises a plurality of dental crown accommodating cavities for wrapping the teeth in the anterior tooth area of the patient; during wearing, the elastic traction part is hooked between the first traction part and the second traction part, so that teeth in the anterior tooth area move towards the posterior tooth area to close a gap generated after tooth extraction.

The invention discloses a novel invisible appliance for treating temporomandibular joint disease pain, which relates to the field of medical instruments and comprises a rear tooth socket, an upper jaw invisible appliance and a lower jaw invisible appliance, the rear tooth socket is arranged at the rear ends of the invisible upper jaw appliance and the invisible lower jaw appliance, an upper jaw pad is arranged at the bottom end of the invisible upper jaw appliance, and a lower jaw pad is arranged at the top end of the invisible lower jaw appliance; canine tooth sleeves are arranged on the upper jaw invisible orthodontic appliance and the lower jaw invisible orthodontic appliance, a traction hook is arranged at one end of each canine tooth sleeve, and an elastic traction ring is arranged on the periphery of each traction hook; the posterior tooth interlocking structure and the anterior tooth vertical traction structure are integrated into the invisible orthodontic appliance, so that orthodontic treatment and temporomandibular joint disease pain treatment are integrated, the treatment period is shortened, and patient compliance is improved; the V-M interlocking structure accurately locks the lower jaw, the vertical traction realizes condylar process reduction, the pain is relieved from pathogenesis, the digital design can realize personalized adaptation, and the double stable curative effects of correction and pain treatment are ensured.

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.

This application discloses a novel device for simultaneously expanding and depressing the mandibular anterior teeth to relieve posterior tooth occlusion, relating to the field of orthodontic technology. It includes a maxillary cast-crown spiral expander, a metal mesh split-plane guide, and traction clips. The maxillary cast-crown spiral expander comprises a cast crown and a spiral expander. The cast crown is used to secure the first premolar, second premolar, and first molar, and the spiral expander is fixedly connected to the cast crown. The metal mesh split-plane guide conforms to the anterior part of the maxillary palate and is fixedly connected to the cast crown. The traction clips are located on the buccal side of the cast crown and are cross-pulled by elastic bands with traction clips located on the lingual side of the mandibular posterior teeth. This application simultaneously expands the arch to solve the problems of maxillary width and vertical misalignment, and utilizes the maxillary cast-crown spiral expander as a reinforcing anchorage to prevent elongation and rotation of the maxillary anchorage teeth. It matches the width of the maxilla and mandible while minimizing anchorage loss, thus relieving posterior tooth occlusion.

This application belongs to the field of medical devices and protective equipment, specifically involving a design method and layered structure for an enhanced mouthguard based on musculoskeletal stability optimization. The method includes: collecting multimodal data such as the full dentition morphology, jawbone structure, mandibular movement trajectory, surface electromyography, and plantar pressure of the subject; constructing a correlation system between mandibular position and overall stability using a radial basis function neural network; setting anatomical boundaries, joint spaces, and muscle symmetry constraints; and using a genetic algorithm to iteratively optimize and lock in a personalized musculoskeletal stability position; based on this, performing layered digital design of the mouthguard's flexible base layer and posterior tooth retention components, and then 3D printing manufacturing. This application, through precise optimization of jaw position, achieves a leap from passive protection to actively enhancing body stability in sports mouthguards, significantly improving exercise efficiency and wearing comfort while ensuring physical protection.

This invention discloses a three-quadrant split-type oral impression tray and its usage method. The tray is composed of a left posterior tooth component, a right posterior tooth component, and an anterior tooth component that can be detachably assembled. The left and right posterior tooth components are symmetrically structured, and each has a pair of L-shaped protrusions along its length. The anterior tooth component has corresponding mating grooves at the L-shaped protrusions. The metal connectors adopt a foolproof asymmetrical tenon design. After being inserted into the mating grooves, they achieve smooth locking through precise clearance tolerances. At the same time, magnetic suction pieces are pre-installed in the mating grooves. The tray can be quickly disassembled into three independent units, adapting to various scenarios of partial impression taking for single jaw full teeth, anterior teeth, and anterior teeth and unilateral posterior teeth. When taking an impression, the surface contact between each component and the oral tissue ensures stable support. When demolding, linear separation is achieved by disassembling the components to disperse resistance. All connectors and mating structures are located at the bottom of the tray, completely avoiding encroachment on the operating space outside the oral cavity.

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 discloses a double-channel guide plate system for immediate implantation of anterior tooth aesthetic area and posterior tooth area, which comprises a planting guide plate body configured to cover a to-be-operated area of a patient, and a double channel is formed in the planting guide plate body; a guide plate support device for fixing the planting guide plate body to a preset position in the mouth of the patient; a guide rail plate element arranged on the guide plate support device; and a plurality of press-in type guide rings, wherein the press-in type guide rings are provided with a sliding column, a stabilizing sleeve and a ring body. Through the guide rail plate element, the double-restraint structure of the sliding column and the auxiliary positioning channel combined with the stabilizing sleeve, a stable multi-point support system is constructed, and the stability and deviation resistance in the operation process are improved; for the anterior tooth aesthetic area, a first guide channel is adopted, and for the posterior tooth area, a wide-aperture second guide channel is adopted, so that the differentiated requirements of the anterior tooth and the posterior tooth are met.