CN117357284A

CN117357284A - Dental instrument, dental instrument set, and method for manufacturing dental instrument

Info

Publication number: CN117357284A
Application number: CN202210765516.XA
Authority: CN
Inventors: 庄慧敏; 王星星; 张超群; 姚峻峰
Original assignee: Shanghai Zhengya Dental Technology Co Ltd
Current assignee: Shanghai Zhengya Dental Technology Co Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2024-01-09

Abstract

The application discloses a dental instrument, a dental instrument kit and a manufacturing method of the dental instrument, wherein the dental instrument comprises a first shell-shaped body with a tooth accommodating cavity for accommodating a plurality of teeth of a dental jaw and a screen which is detachably and fixedly connected to the labial side of the first shell-shaped body, the relative position relationship between the first shell-shaped body and the screen is that the screen is kept at a preset position in a mouth after the dental instrument is worn on the dental jaw, and the preset position enables the labial cheek muscle corresponding to the covered teeth of the screen to be blocked by the screen and not contacted with the covered teeth, wherein when the traction force applied to the screen in a preset direction is greater than or equal to a preset force value, the screen is separated from the first shell-shaped body without damage. The dental instruments and dental instrument kits of the present application may be used to break up labial and buccal dysfunctions and to treat a variety of problems that are habitually used by the oral cavity.

Description

Dental instrument, dental instrument set, and method for manufacturing dental instrument

Technical Field

The invention belongs to the field of dental medical appliances, and particularly relates to a dental appliance, a dental appliance set and a manufacturing method of the dental appliance.

Background

The development of misjaw deformity, resembling growth and development, is the product of the interaction of genetically controlled cell proliferation and environmental factors. Humans survive for thousands of years with finer and finer foods, with greatly reduced masticatory requirements for humans, and childhood often suffers from inadequate perioral muscle exercise that affects subsequent tooth growth.

2 years to 5 years, the growth rate of children is fastest at this stage, and incorrect bite relationships and deciduous teeth are revealed, and studies indicate that these early problems still exist at later stages of development and become more prominent with eruption of permanent teeth. For example, habitual sucking refers to long-term use of the pacifier, vomiting of the tongue and oral breathing (collectively referred to as dysfunctional muscles) are the main causes of jawbone dysplasia and crowding of teeth. And the bad habits are corrected, so that complex orthodontic treatment can be avoided when the subsequent permanent teeth erupt.

In the prior art, frankel appliances or Balters bioregulators are often used to relieve centripetal pressure on the cheeks and/or lips during alveolar bone development, which is beneficial to lingual muscle function. However, the correction is usually made of resin and bent steel wires, the volume is large, the foreign body sensation is strong in the mouth of a patient, the correction device is fixed in the mouth through the steel wires, the correction device needs to be removed from the mouth when the patient eats or speaks, and the conventional correction device is inconvenient to take and wear due to excessive body quantity.

In addition, the Frankel appliance, the Balters biological regulator or other types of muscle agonists on the market can only isolate the pressure applied to the teeth of the cheeks and/or lips, and after the appliance is removed, the cheilitis or orbicularis stomatitis is restored to the original position, so that the new equilibrium state of the cheilitis or orbicularis stomatitis at the correct position can not be effectively established, and the muscle remodeling effect is realized.

To this end, the present application provides a solution to the above-mentioned problems.

Disclosure of Invention

The invention solves the technical problem of overcoming the defects existing in the prior art and provides a dental instrument, a dental instrument kit and a dental instrument manufacturing method capable of correcting the function of a cheilitis or a orbicularis stomatitis.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a dental appliance comprising a first shell-like body having a tooth receiving cavity for receiving a plurality of teeth of a dental jaw and a removable shield fixedly connected to a labial side of the first shell-like body, the relative positional relationship between the first shell-like body and the shield being such that the shield remains in a predetermined position within the mouth after the dental appliance is worn on the dental jaw, the predetermined position being such that a labial muscle corresponding to a tooth covered by the shield is blocked from contact with the covered tooth, wherein the shield is nondestructively disengaged from the first shell-like body when a pulling force applied to the shield in a predetermined direction is greater than or equal to a predetermined force value.

Preferably, the lip side or the cheek side of the first shell-shaped body is provided with a first connecting part, and the surface of the shield adjacent to one side of the first shell-shaped body is provided with a second connecting part detachably connected with the first connecting part.

Preferably, the first shell-like body has at least two of the first connection portions, and the first connection portions are symmetrically disposed about a dental midline.

Preferably, the first connecting portion is provided on a surface of the tooth receiving cavity corresponding to the incisor and/or the premolars.

Preferably, the detachable connection structure between the first connection portion and the second connection portion is a clamping structure.

Preferably, the first connecting portion is an anchoring opening structure of the corresponding tooth receiving cavity surface, the anchoring opening structure having a lead-in groove and a fixing groove; the second connecting part is arranged on the surface of one side of the screen adjacent to the first shell-shaped body in a protruding way towards the first shell-shaped body; the second connecting part is provided with a guide column corresponding to the guide-in groove and an anchoring part corresponding to the fixing groove, and the guide column slides along the guide-in groove until the anchoring part is clamped into the fixing groove.

Preferably, the first connecting part is an installation base adhered to the surface of the first shell-shaped body, and the installation base is provided with a chute for fixing the second connecting part; the sliding groove is provided with a guide-in groove and a fixing groove, and the second connecting part is arranged on the surface of one side of the screen adjacent to the first shell-shaped body in a protruding way towards the direction of the first shell-shaped body; the second connecting part is provided with a guide column corresponding to the guide-in groove and an anchoring part corresponding to the fixing groove, and the guide column slides along the guide-in groove until the anchoring part is clamped into the fixing groove.

Preferably, the guide post has a holding portion that prevents the screen from moving in a labial-lingual direction or a buccal-lingual direction, and a distance between the anchoring portion and the holding portion is equal to a thickness of the first shell body.

Preferably, a portion of the guide post adjacent to the anchoring portion passes through the fixing groove, and another portion of the guide post is caught outside the fixing groove.

Preferably, the first connecting part is a protrusion arranged on the surface of the corresponding tooth accommodating cavity adjacent to one side of the screen; the second connecting part is a groove which is adjacent to the screen and corresponds to the protrusion on the surface of one side of the first shell-shaped body.

Preferably, the first connecting portion and the second connecting portion are detachably connected through a sucker.

Preferably, the first connecting portion is a surface of the tooth receiving cavity, or a surface of the first connecting portion adjacent to the second connecting portion is a smooth horizontal surface.

Preferably, the shield is an arch structure conforming to the curvature of the dental arch.

Preferably, the shield is in direct contact with the cheilitis muscle when worn, including the upper and lower cheilitis muscles.

Preferably, the cheilitis cheek muscles further comprise upper cheek muscles and lower cheek muscles on the left and right sides.

Preferably, the width of the shield in the vertical direction is gradually reduced from the anterior dental region to the posterior dental region.

Preferably, the shield covers the entire crown of the posterior teeth.

Preferably, the shield extends from 1mm-2mm from the maxillary vestibular sulcus to 1mm-2mm from the mandibular vestibular sulcus.

Preferably, the width of the front tooth area of the shield in the vertical direction is not more than 1.8cm and/or the width of the rear tooth area is not less than 0.8cm.

Preferably, a traction portion is provided on a surface of the shield adjacent to the labial side, and the traction portion is provided so as to protrude from the labial side of the shield toward the labial side.

Preferably, the traction part is detachably connected with the screen.

Preferably, the traction part is in threaded connection with the shield, a screw is arranged on one side of the traction part adjacent to the shield, and a penetrating screw hole is formed in the shield.

Preferably, the surface of the shield is provided with vent holes penetrating through the shield.

Preferably, the tooth receiving cavity has a geometry that moves the wrapped tooth from the first position to the second position.

A dental appliance kit comprising a dental appliance as claimed in any one of the preceding claims, and further comprising a second shell-like body having a tooth receiving cavity for a plurality of teeth of the jaw, the labial and/or buccal sides of the second shell body being provided with a locking portion which is removable from a second connection portion on the shield.

Preferably, the second connecting portion and the first connecting portion on the first shell-shaped body are respectively connected with the locking portion simultaneously to lock the relative positional relationship of the upper jaw and the lower jaw.

Preferably, the second connecting portion and the locking portion are detachable clamping structures or sucker type connecting structures.

A method of manufacturing a dental appliance, comprising:

obtaining oral data of a patient, the oral data including dental data, gingival data, and buccinal data of the patient;

generating a three-dimensional model representing a dental instrument based on the oral data; the three-dimensional model comprises a screen three-dimensional model and a first shell-shaped body three-dimensional model; based on the correction scheme, the first shell-shaped body three-dimensional model is provided with a first connecting part model generated according to the correction scheme, and the shield three-dimensional model is provided with a second connecting part model generated according to the correction scheme;

a dental instrument including a first shell-like body and a shield is fabricated from the three-dimensional model.

Preferably, the tooth data includes tooth shape, arch length, and arch curvature.

Preferably, the labial cheek muscle data includes upper and lower vestibular sulcus contours, upper and lower labial muscle contours, and upper and lower cheek muscle contours on the left and right sides.

Preferably, the front end of the screen three-dimensional model is also provided with a traction part model.

Preferably, the front end of the three-dimensional model of the shield is further provided with a vent hole penetrating through the shield in the sagittal direction.

Preferably, the dental instrument having the first shell-like body and the shield is fabricated according to the three-dimensional model using additive manufacturing.

The dental instrument, the dental instrument set and the manufacturing method of the dental instrument provided by the invention can bring at least one of the following beneficial effects:

1. the dental instrument comprises the first shell-shaped body and the shield which are detachably connected, and when the shield is connected with the first shell-shaped body for use, the shield can prevent the buccinator from applying pressure to teeth, so that sufficient space is provided for tooth growth and dental arch development. In addition, when the screen is subjected to external tension, the screen is easy to separate from the first shell-shaped body, and the separated screen is used for pulling the first shell-shaped body and can be used for correcting the cheilitis. The screen in this application keeps off simple structure, convenient operation sets up through special connection with between the first shell form body, makes it can break the unusual of lip cheek muscle, can train the new muscle balance of establishment again to the lip cheek muscle.

2. The invention also includes a dental tool kit having a first shell-like body and a second shell-like body that are respectively worn on the upper and lower jaws of a patient, and a shield detachably connected to the first shell-like body and the second shell-like body, respectively. The relative position relation of the upper jaw and the lower jaw can be locked through the screen, so that the problem of mouth breathing and tongue spitting of a patient is corrected.

3. The shield has the advantages of simple structure, convenient manufacture, correction of various oral problems and wide application range. Meanwhile, the screen and the shell-shaped body are of a detachable structure, so that the cleaning is facilitated, and food residues are not easy to accumulate.

Drawings

The above features, technical features, advantages and implementation thereof will be further described in the following detailed description of preferred embodiments with reference to the accompanying drawings in a clearly understandable manner.

FIG. 1 is a schematic view of one embodiment of a dental instrument of the present invention;

FIG. 2 is a schematic view of another embodiment of a dental instrument of the present invention;

FIG. 3 is a schematic view of one embodiment of a first shell-like body of the dental instrument of the present invention;

FIG. 4 is a schematic view of one embodiment of a shield in a dental instrument of the present invention;

FIG. 5 is an enlarged view of a portion of area A of FIG. 3;

FIG. 6 is an enlarged view of a portion of region B of FIG. 4;

FIG. 7 is a schematic view of another embodiment of a first shell-like body of a dental instrument of the present invention;

FIG. 8 is a schematic view of one embodiment of a second attachment portion of a dental instrument of the present invention;

FIG. 9 is a schematic view of another embodiment of a second attachment portion of a dental instrument of the present invention;

FIG. 10 is a schematic view of another embodiment of a first shell-like body of the dental instrument of the present invention;

FIG. 11 is a schematic view of another embodiment of a shield in a dental instrument of the present invention;

FIG. 12 is a schematic view of another angle of FIG. 11;

FIG. 13 is a schematic view of another embodiment of a shield in a dental instrument of the present invention;

FIG. 14 is a schematic view of another embodiment of a shield in a dental instrument of the present invention;

FIG. 15 is a schematic view of another embodiment of a shield in a dental instrument of the present invention;

FIG. 16 is a flow chart of a method of manufacturing a dental appliance according to the present invention.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of each embodiment of the present application will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments may be mutually combined and referred to without contradiction.

The directional terms "upper", "lower", "left", "right" and the like as used herein with respect to the drawings are not intended to be limiting in any way.

The "posterior tooth zone" in this application is defined according to the classification of teeth, including premolars and molars, shown as 4-8 teeth in FDI notation, and anterior tooth zone FDI notation as 1-3 teeth, published by the university of beijing medical press, 2 nd edition, pages 36-38. The anterior tooth region of the first shell body may be configured to receive the central incisors, lateral incisors, and cuspids of the teeth, and the posterior tooth region of the first shell body may be configured to receive the first premolars, the second premolars, the first molars, the second molars, and the third molars of the teeth.

Referring to fig. 1 to 4, the present invention provides a dental appliance 100 comprising a first shell-like body 1 having a tooth receiving cavity 11 for receiving a plurality of teeth of a dental jaw and a shield 2 removably fixedly attached to a buccal side of the first shell-like body 1. The first shell-shaped body 1 can be worn on the maxillary dentition or mandibular dentition of a patient and wraps all teeth on the dentition, the labial side or labial cheek side of the first shell-shaped body 1 has a first connecting portion 12, that is, the outer surface of the tooth receiving cavity 11 of the front dental region of the first shell-shaped body 1, or the outer surfaces of the tooth receiving cavities 11 of the front dental region and the rear dental region have a first connecting portion 12, and the surface of the shield 2 adjacent to one side of the first shell-shaped body 1 is provided with a second connecting portion 22 detachably connected with the first connecting portion 12. When the dental instrument 100 of the present application is worn in the mouth of a patient, the shield 2 is positioned to a predetermined position by the first connecting portion 12 and the second connecting portion 22, that is, the relative positional relationship between the first shell-shaped body 1 and the shield 2 is such that the shield 2 is maintained at the predetermined position in the mouth after the dental instrument 100 is worn in the jaw. The predetermined position is such that the muscles of the labial and buccal muscle portions of the teeth covered by the shield 2 are blocked by the shield 2 from contact with the covered teeth, i.e. the teeth covered by the shield 2 can remain separated from their corresponding labial and buccal muscles, ensuring that the labial and buccal muscles do not exert inward pressure on these teeth. Furthermore, the connection between the first connection portion 12 and the second connection portion 22 is a detachable connection and satisfies that when the screen 2 is subjected to a traction force in a predetermined direction or more which is equal to or greater than a predetermined force value, the screen 2 can be detached from the first shell-shaped body 1 without damage, and then the patient can perform a lip and cheek exercise using the detached screen 2, so that the lip and cheek can establish an equilibrium state at a new position. In use of the dental instrument 100 of the present application, the first and second connection portions 12, 22 separate from one another when subjected to forces exceeding 2N outwardly of the mouth.

In some embodiments, the first shell-like body 1 has at least two first connection portions 12, and all first connection portions 12 are symmetrically disposed about the midline of the tooth, such that traction (load) between the first connection portions 12 and the second connection portions 22 is evenly distributed. The first connection 12 may be provided at an outer surface of the tooth receiving cavity 11 corresponding to the incisors and/or premolars, where the outer surface is a labial/buccal surface. Specifically, when the first shell-like body 1 has two first connection portions 12, the first connection portions 12 are disposed at the tooth receiving cavities 11 corresponding to the tooth positions 3 to 4; when the first shell-shaped body 1 has three first connecting portions 12, one of the first connecting portions 12 is disposed at the tooth receiving cavity 11 corresponding to the tooth position 1-1 and is axisymmetric with respect to the midline of the tooth; in the preferred embodiment, the first shell-shaped body 1 is provided with four first connecting portions 12, which are respectively arranged on the tooth accommodating cavities 11 corresponding to the central incisors and the 5 th tooth positions, because the tooth accommodating cavity 11 of the central incisors is the tooth accommodating cavity 11 with the largest surface area, the first connecting portions 12 can be placed in a sufficient area, in addition, the tooth accommodating cavity 11 corresponding to the 5 th tooth position is the tooth accommodating cavity 11 with the most gentle outer surface, the angle and the orientation design of the first connecting portions 12 are simpler and more convenient, and the influence of the tooth accommodating cavity 11 on the design of the first connecting portions 12 is not considered too much.

In some embodiments, the detachable connection structure between the first connection portion 12 and the second connection portion 22 is a clamping structure. Referring specifically to fig. 5 and 6, the first connecting portion 12 is an anchoring opening structure of the outer surface of the tooth receiving cavity 11 at a corresponding position, and the anchoring opening structure has an introduction groove 121 and a fixing groove 122; the second connecting portion 22 is disposed on a surface of the shield 2 adjacent to the first shell-shaped body 1 and protrudes towards the first shell-shaped body 1, and the second connecting portion 22 may be integrally formed with the shield 2, specifically may be protruding towards the first shell-shaped body 1 from a surface of the shield 2 adjacent to the first shell-shaped body 1. The second connection portion 22 has a guide post 221 corresponding to the introduction groove 121 and an anchor portion 222 corresponding to the fixing groove 122, and the guide post 221 slides along the introduction groove 121 until the anchor portion 222 is engaged with the fixing groove 122.

Specifically, the width of the guiding groove 121 is larger than the size of the guiding post 221, so that the guiding post 221 can smoothly pass through the guiding groove 121, and the size of the anchoring portion 222 is larger than the size of the fixing groove 122, so that the second connecting portion 22 is not easy to fall off from the first connecting portion 12 after being clamped into the first connecting portion 12. The introduction groove 121 may have an opening structure extending in a vertical direction, and the first connection portion 12 and the second connection portion 22 may be vertically engaged with each other, or the introduction groove 121 may have an opening structure extending at an angle to the vertical direction, and the first connection portion 12 and the second connection portion 22 may be laterally engaged with each other at an angle. The two engagement modes can be selected according to the positions where the first connecting portion 12 and the second connecting portion 22 are provided.

The connection between the first connection portion 12 and the second connection portion 22 is also required to satisfy that the screen 2 is detached from the first shell-like body 1 without damage when the screen 2 receives a traction force in a predetermined direction or more of a predetermined force value. In this embodiment, specifically, when the shield 2 needs to be separated from the first shell-shaped body 1, the patient can pull the shield 2 toward the outside of the oral cavity, and when the pulling force reaches a predetermined force value, that is, a force value that the anchoring portion 222 is elastically deformed to be separated from the fixing groove 122, the first connecting portion 12 is separated from the second connecting portion 22. The second connecting portion 22 is made of a material having elastic bending capability, and can recover its original shape after being deformed by extrusion, and may be made of a medical silicone rubber material.

The screen 2 structure in this application also can adopt medical silicone rubber material, and silicone rubber has certain bearing capacity, can effectual separation lip cheek muscle and correspond the dentition contact to the soft tissue in the patient's oral cavity is laminated to screen 2, uses silicone rubber can provide soft comfortable result of use.

In other embodiments, as shown with reference to fig. 7, the first connecting portion 12 is a mounting base adhered to the outer surface of the first shell-like body 1. The mounting base may be of a hollow structure, and the outer surface of the mounting base has an anchoring opening structure consistent with the above structure, or the mounting base is of a solid structure, and the surface of the mounting base adjacent to the side of the second connection portion 22 has a groove structure matching the shape of the second connection portion 22, and the second connection portion 22 may be snapped into the groove.

In some embodiments, when the second connection part 22 is a protruding structure having a guide post 221 and an anchoring part 222, and the first connection part 12 is an anchoring opening structure of an outer surface of the tooth receiving cavity 11 or the first connection part 12 is a mounting base of a hollow structure, as shown in fig. 8, a clamping part 223 for preventing the screen 2 from moving in a labial-lingual direction or a buccal-lingual direction may be further provided on the guide post 221, and a distance h1 between the anchoring part 222 and the clamping part 223 is equal to a thickness of the first housing or a wall thickness of the mounting base.

In other embodiments, when the second connection part 22 is a protruding structure having a guide post 221 and an anchoring part 222, and the first connection part 12 is an anchoring opening structure of an outer surface of the tooth receiving cavity 11 or the first connection part 12 is a mounting base of a hollow structure, as shown in fig. 9, a portion of the guide post 221 adjacent to the anchoring part 222 passes through the fixing groove 122, another portion of the guide post 221 is clamped at an outer side of the fixing groove 122, and particularly the guide post 221 may have a truncated cone structure with non-uniform width, and particularly the width h2 of the guide post 221 is gradually increased from an end adjacent to the tooth receiving cavity 11 to an end far from the tooth receiving cavity 11, the minimum width of the guide post 221 is smaller than the width of the guide groove 121, and the maximum width of the guide post 221 is greater than the width of the guide groove 121.

Of course, in other embodiments, the first connecting portion 12 may be a protruding structure with a guide post 221 and an anchoring portion 222, the second connecting portion 22 is a clamping groove structure corresponding to the first connecting portion 12, and referring specifically to fig. 10, the first connecting portion 12 is a protruding structure protruding in the distal direction from the outer surface of the tooth receiving cavity 11, and the protruding first connecting portion 12 is integrally formed with the first shell-shaped body 1. The second connecting portion 22 is a groove formed by recessing a side surface of the shield 2 adjacent to the first shell-shaped body 1 in a far tooth direction, a near tooth end of the groove is of a channel structure, and the end of the channel structure is embedded into the groove in accordance with the shape of the anchoring portion 222 of the first connecting portion 12, so that the second connecting portion 22 on the shield 2 can be detachably and fixedly connected with the first connecting portion 12 along a lip (cheek) tongue direction.

In some embodiments, as shown with reference to fig. 2 and 11, the first connecting portion 12 and the second connecting portion 22 are detachably connected by a suction cup. The shield 2 is provided with a second connecting part 22 with a horn sucking disc structure on the surface adjacent to the first shell-shaped body 1, the first connecting part 12 can be the outer surface of the tooth accommodating cavity 11, the second connecting part 22 is directly adsorbed on the outer surface of the tooth accommodating cavity 11, or the first connecting part 12 can be a platform which is arranged on the outer surface of the tooth accommodating cavity 11 and slightly protrudes to the far tooth direction, and the surface of the platform adjacent to the second connecting part 22 is provided with a smooth horizontal surface, so that a better adsorption condition is provided between the first connecting part 12 and the second connecting part 22, and the shield 2 can not fall off from the first shell-shaped body 1 under the condition of no external force.

In some embodiments, the shield 2 is an arcuate structure conforming to the curved shape of the dental arch. Alternatively, referring to fig. 1, the shield 2 may be one that blocks contact of only the teeth of the anterior dentition with the upper labial muscles and the labial muscles, so that the shield 2 need only cover all of the teeth of the anterior dentition of the upper and lower jaws. The shield 2 is simultaneously brought into contact with gums corresponding to all teeth of the anterior dental region of the mandibular dentition, and the shield 2 may extend from 1mm-2mm from the maxillary vestibular sulcus to 1mm-2mm from the mandibular vestibular sulcus. Thereby avoiding irritation of the muscles at the vestibular sulcus.

Furthermore, as shown with reference to fig. 2, the shield 2 structure may be selected to block contact of the anterior dental region and the posterior dental region upper and lower dentition with the labial cheek muscles. The labial cheek muscles herein specifically refer to upper labial muscles, lower labial muscles, upper cheek muscles on the left and right sides, and lower cheek muscles. In this embodiment, referring to fig. 12, the width of the shield 2 in the vertical direction (X-axis direction in the drawing) gradually decreases from the anterior tooth area to the posterior tooth area. The shield 2 can cover the front teeth area and the whole crown part of the teeth in the rear teeth area, the shield 2 extends from a position 1mm-2mm away from the maxillary vestibular sulcus to a position 1mm-2mm away from the mandibular vestibular sulcus in the front teeth area, and the maximum value of the width H1 of the shield 2 in the vertical direction of the front teeth area is 1.8cm; the screen 2 extends from the gingival margin end of the teeth in the maxillary posterior region to the gingival margin end of the teeth in the maxillary posterior region. And the minimum value of the width H2 of the shield 2 in the vertical direction of the anterior teeth area is 0.8cm.

In addition, referring to fig. 13, a v-shaped notch 23 may be provided in the middle of the anterior tooth area of the shield 2 to provide a labial ligament avoiding area. The length in the vertical direction is about 2mm.

In some embodiments, as shown with reference to fig. 4, the surface of the shield 2 adjacent to the labial side is further provided with a traction portion required for training the perioral muscle strength, the traction portion being provided protruding from the labial side of the shield 2 toward the labial side. The screen 2 with the traction part is preferably made of an integrally formed structure by using medical silicone rubber as a material through a high-temperature high-pressure stamping forming process.

In other embodiments, and with reference to fig. 14, the surface of the shield 2 is further provided with a plurality of ventilation holes 24 therethrough, in a display arrangement, so that the air in the mouth and the outside can effectively circulate after the patient uses the dental apparatus 100.

In other embodiments, referring to fig. 15, a traction portion provided on a surface of the shield 2 adjacent to the labial side is connected with the shield 2 in a split manner, specifically, the traction portion is in threaded connection with the shield 2, a screw is provided on a side of the traction portion adjacent to the shield 2, and a screw hole 26 penetrating through the shield 2 is provided. In the use of the dental apparatus 100, the shield 2 can be fixed on the first shell-shaped body 1 through the first connecting part 12 and the second connecting part 22, the shield 2 is used for blocking the contact of the buccinator and the corresponding dentition, sufficient space is provided for the tooth growth and development of a patient, when the shield 2 is required to perform the perioral muscle training, the shield 2 is separated from the first shell-shaped body 1, then the traction part is connected to the labial side of the shield 2, and the patient performs the perioral muscle training by using the traction part, so that the muscle reaches an equilibrium state at a new position.

In addition, referring to fig. 13, the front end of the pulling portion, which is adjacent to the shield 2, may be provided with a clamping structure, in which a vent hole 24 is added to the front tooth area of the shield 2, the vent hole 24 is provided with two holes, a cross bar structure 25 is provided in the middle, and one end of the pulling portion, which is adjacent to the shield 2, may be provided with a structure that is clamped with the vent hole 24 and the cross bar structure 25, or the cross bar may be wired, and then stretched to assist in stress application.

In some embodiments, the first shell-like body 1 in the present application has a dental appliance effect, and the teeth that can be wrapped apply moving, steering forces and moments. I.e. the tooth receiving cavity 11 of the first shell-like body 1 has a geometry that allows the wrapped tooth to move from the first position to the second position.

The present application also includes a dental tool kit comprising a dental tool 100 according to any one of the preceding claims, further comprising a second shell-like body having a tooth receiving cavity 11 for a plurality of teeth of the jaw, the first shell-like body and the second shell-like body being worn separately from the patient's maxillary dentition, the labial and/or buccal sides of the second shell also being provided with a locking portion detachable from the second connecting portion 22. The second connecting portion 22 is connected to the first connecting portion 12 and the locking portion simultaneously to lock the relative positional relationship of the upper jaw and the lower jaw. In general, the dental apparatus kit of the present application is used for correcting oral respiration at night, and the shield 2 can lock the upper and lower jaws in a bite state, thereby helping a patient breathe excessively from the oral respiration to the nasal respiration.

A detachable clamping structure or a sucking disc type connecting structure is arranged between the second connecting part 22 and the locking part. The specific structure between the locking portion and the second connecting portion 22 is identical to the connection relationship between the first connecting portion 12 and the second connecting portion 22, and the above-mentioned embodiments between the first connecting portion 12 and the second connecting portion 22 are referred to herein, which will not be repeated.

Referring now to fig. 16, there is shown a schematic flow chart of a method of manufacturing a dental instrument 100 in one embodiment of the present application,

in step 400, oral data of a patient is obtained, including dental data, gingival data, and buccinal muscle data of the patient. In one embodiment, the patient's oral data may be obtained by direct measurement of the patient's oral cavity. In yet another embodiment, the patient's mouth may be silica gel molded and the mold measured to obtain data for the patient's mouth. In yet another embodiment, the patient's mouth may be scanned to obtain a three-dimensional digital model, which is then measured to obtain data of the patient's mouth, and the scanning device may include an intraoral scanner, cone Beam CT (CBCT), spiral CT, and the like.

Specifically, the tooth data includes tooth shape, arch length, and arch curvature. The labial cheek muscle data includes the upper and lower vestibular sulcus contours, the upper and lower labial muscle contours, the upper and lower buccal muscle contours on the left and right sides.

In step 500, a three-dimensional model representing the dental instrument 100 is generated based on the oral data acquired in any of the above-described ways; the three-dimensional model comprises a screen 2 three-dimensional model and a first shell-shaped body 1 three-dimensional model. The three-dimensional model of the first shell body 1 may be a dentition model of the patient or a shell appliance model corresponding to the dentition model.

Based on the correction scheme, a first connection 12 model generated according to the correction scheme is provided on the first shell-like body 1 three-dimensional model, and a second connection 22 model generated according to the correction scheme is provided on the shield 2 three-dimensional model.

In addition, a traction part model can be designed at the front end of the screen 2 three-dimensional model according to the needs of the correction scheme. And the front end of the three-dimensional model of the shield 2 is also provided with a vent hole 24 penetrating the shield 2 in the sagittal direction.

In step 600, a dental instrument 100 including a first shell-like body 1 and a shield 2 is fabricated from the three-dimensional model. In one embodiment, a dental instrument 100 having a first shell-like body 1 and a shield 2 is fabricated using additive manufacturing methods from the three-dimensional model.

The additive manufacturing can also be called 3D printing, is combined with computer-aided design, material processing and forming technology, is based on digital model files, and is a manufacturing technology for manufacturing solid objects by stacking special metal materials, nonmetal materials and medical biological materials layer by layer in the modes of extrusion, sintering, melting, photo-curing, spraying and the like through software and a numerical control system.

It should be noted that, under the condition of no contradiction, the above examples can be freely combined according to needs to form different new embodiments, and the embodiments formed by the combination are all within the protection scope of the application, so that the description is omitted herein for saving the text of the application.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Likewise, the foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art who is skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and it is intended to cover the changes or substitutions within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A dental appliance comprising a first shell-like body having a tooth receiving cavity for receiving a plurality of teeth of a dental jaw and a removable shield fixedly connected to a labial side of the first shell-like body, wherein a relative positional relationship between the first shell-like body and the shield is such that the shield is maintained at a predetermined position within the mouth after the dental appliance is worn on the dental jaw, the predetermined position being such that a labial muscle corresponding to a tooth covered by the shield is blocked from contact with the covered tooth, wherein the shield is nondestructively disengaged from the first shell-like body when a traction force applied by the shield in a predetermined direction is greater than or equal to a predetermined force value.

2. The dental instrument of claim 1, wherein the labial or labial side of the first shell-like body has a first connection portion, and wherein a surface of the shield adjacent to the first shell-like body side has a second connection portion removably connected to the first connection portion.

3. The dental instrument of claim 2, wherein the first shell body has at least two of the first connection portions, and wherein the first connection portions are symmetrically disposed about a midline of the tooth.

4. A dental instrument as in claim 3, wherein the first connection is provided on a surface of the tooth receiving cavity corresponding to an incisor and/or premolars.

5. The dental instrument of claim 2, wherein the detachable connection between the first connection and the second connection is a snap-fit connection.

6. The dental instrument of claim 5, wherein the first connection portion is a corresponding anchoring opening structure of the tooth receiving cavity surface, the anchoring opening structure having a lead-in slot and a securing slot; the second connecting part is arranged on the surface of one side of the screen adjacent to the first shell-shaped body in a protruding way towards the first shell-shaped body; the second connecting part is provided with a guide column corresponding to the guide-in groove and an anchoring part corresponding to the fixing groove, and the guide column slides along the guide-in groove until the anchoring part is clamped into the fixing groove.

7. The dental instrument of claim 5, wherein the first connection portion is a mounting base bonded to a surface of the first shell-like body, the mounting base having a chute for securing the second connection portion; the sliding groove is provided with a guide-in groove and a fixing groove, and the second connecting part is arranged on the surface of one side of the screen adjacent to the first shell-shaped body in a protruding way towards the direction of the first shell-shaped body; the second connecting part is provided with a guide column corresponding to the guide-in groove and an anchoring part corresponding to the fixing groove, and the guide column slides along the guide-in groove until the anchoring part is clamped into the fixing groove.

8. The dental instrument of claim 6 or 7, wherein the guide post has a catch preventing lingual or buccal movement of the shield, a distance between the anchor and the catch being equal to a thickness of the first shell body.

9. The dental instrument of claim 6 or 7, wherein a portion of the guide post adjacent the anchor portion passes through the securing slot and another portion of the guide post is retained outside the securing slot.

10. The dental instrument of claim 5, wherein the first connection portion is a protrusion of the corresponding tooth receiving cavity disposed adjacent a side surface of the shield; the second connecting part is a groove which is adjacent to the screen and corresponds to the protrusion on the surface of one side of the first shell-shaped body.

11. The dental instrument of claim 2, wherein the first connection portion and the second connection portion are detachably connected by a suction cup.

12. The dental instrument of claim 11, wherein the first connection portion is a surface of a tooth receiving cavity or a surface of the first connection portion adjacent the second connection portion is a smooth horizontal surface.

13. The dental appliance of claim 1, wherein the shield is an arcuate structure conforming to the curved shape of the dental arch.

14. The dental appliance of claim 1 wherein the shield is in direct contact with the labial cheek muscles when worn, the labial cheek muscles including an upper labial muscle and a lower labial muscle.

15. The dental appliance of claim 14 wherein the labial cheek muscles further include left and right upper and lower cheek muscles when worn.

16. The dental instrument of claim 1, wherein the shield tapers in width in a vertical direction from the anterior tooth area to the posterior tooth area.

17. A dental appliance as in claim 16 or 15, wherein the shield covers all crowns of the posterior teeth.

18. A dental instrument as in claim 16 or 14, wherein the shield extends from 1mm to 2mm from the maxillary vestibular sulcus to 1mm to 2mm from the mandibular vestibular sulcus.

19. The dental instrument of claim 16, wherein the shield has a width of the anterior dental region of no more than 1.8cm and/or a width of the posterior dental region of no less than 0.8cm in a vertical direction.

20. The dental instrument of claim 1, wherein a surface of the shield adjacent the labial side is provided with a traction portion, the traction portion protruding from the labial side of the shield toward the labial side.

21. The dental instrument of claim 20, wherein the pulling portion is detachably coupled to the shield.

22. The dental instrument of claim 21, wherein the pulling portion is threadably coupled to the shield, a threaded rod is disposed on a side of the pulling portion adjacent the shield, and a threaded hole is disposed in the shield.

23. A dental instrument as claimed in claim 1 or 22, wherein a surface of the shield is provided with ventilation holes through the shield.

24. The dental appliance of claim 1, wherein the tooth receiving cavity has a geometry that causes the wrapped tooth to move from the first position to the second position.

25. A dental tool kit comprising a dental tool according to any of claims 1-24, further comprising a second shell-like body having a tooth receiving cavity for a plurality of teeth of the jaw, the labial and/or buccal sides of the second shell body being provided with a locking portion which is detachable from a second connection portion on the shield.

26. The dental instrument set of claim 25, wherein the second connection portion and the first connection portion on the first shell-like body are respectively connected to lock the relative positional relationship of the upper and lower jaws simultaneously with the locking portion.

27. The dental instrument kit of claim 26, wherein the second connection portion and the locking portion are a detachable clip structure or a suction cup connection structure.

28. A method of manufacturing a dental instrument, comprising:

29. The method of manufacturing of claim 28, wherein the tooth data includes tooth shape, arch length, and arch curvature.

30. The method of manufacturing according to claim 28, wherein the labial cheek muscle data includes upper and lower vestibular sulcus contours, upper and lower labial muscle contours, upper and lower cheek muscle contours on the left and right sides.

31. The method of manufacturing of claim 28, wherein the front end of the shield three-dimensional model further has a tractor model.

32. The method of manufacturing of claim 28, wherein the front end of the shield three-dimensional model further has a vent hole extending through the shield in a sagittal direction.

33. The method of manufacturing of claim 28, wherein the dental instrument having the first shell-like body and the shield is fabricated using additive manufacturing from the three-dimensional model.