CN211750179U

CN211750179U - Dental appliance, dental appliance set and dental appliance system

Info

Publication number: CN211750179U
Application number: CN201922484327.1U
Authority: CN
Inventors: 沈刚; 魏亭亭; 王特; 蒋健羽; 徐子卿; 郭涛; 王星星; 杨森森; 庄慧敏; 吴刚
Original assignee: Shanghai Smartee Denti Technology Co Ltd
Current assignee: Shen Gang; Shanghai Zhengya Dental Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-27
Anticipated expiration: 2029-12-31
Also published as: TWM612021U

Abstract

The utility model provides a dental appliance, which comprises a shell-shaped body, wherein the shell-shaped body is provided with a plurality of cavities for accommodating upper jaw teeth, the shell-shaped body is also provided with a palate arch for reshaping the arch shape, and two ends of the palate arch are respectively and partially connected with the gingival margin of the lingual side of the back tooth area at the left side and the right side of the shell-shaped body or the gingival margin adjacent to the lingual side; when the shell-shaped body acts on teeth, the palatal arch induces the buccal-lingual lateral expansion of maxillary palatal midriff bone deposition through deformation, and teeth in the posterior tooth area move in the buccal-lingual lateral direction under the action of the shell-shaped body. The utility model also provides a dental appliance suit and a dental appliance system comprising the dental appliance.

Description

Dental appliance, dental appliance set and dental appliance system

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to appliance, dental appliance suit and dental appliance system are rescued to dentistry.

Background

Crowding is a common clinical manifestation in patients receiving an orthodontist's visit, although the current common correction designs provide clearance by tooth extraction, adjacent stripping, molar pushing to the distal or labial teeth, and the like. However, in some patients, crowding is mainly manifested by insufficient arch width, and after the arch width is opened, crowding is improved. The arch expansion treatment is a common correction method for irregular width of dental arches, and the common arch expansion method comprises arch expansion of a fixed arch expander, arch expansion of a four-eye spring, arch expansion of a knight arch, auxiliary arch expansion of a planting nail, auxiliary arch expansion of a surgical operation and the like. The invisible appliance also has certain bow expansion capability, so that researches show that the spiral bow expansion spring is combined with the invisible appliance to expand the bow, and good curative effect is achieved.

However, the above correction methods are mostly fixed correction methods, which not only cause great damage to the oral cavity of the patient, but also cause poor experience and comfort of the patient. In addition, when carrying out above-mentioned process operation of correcting, need stretch into the interior device aperture with the spanner when the patient uses and expand the bow operation, this greatly increased the patient expand the inconvenience of bow, also easy little spanner falls into the mouth when the operation and causes risks such as respiratory tract jam. The traditional four-eye spring expander and the like often cause discomfort to patients because metal parts of the traditional four-eye spring expander and the like easily press mucosa. The invisible tooth appliance is comfortable to wear, can be taken off and worn, is attractive, and is selected by more and more people, the invisible tooth appliance also has the function of partial arch expansion, but because the arch expansion force is small, the arch expansion effect is poor, and molar arches are expanded front and back in sequence, so that the arch expansion period is prolonged. Therefore, how to combine traditional function of expanding the bow with stealthy appearance of rescuring the ware and can reach the same or better effect of rescuring, perhaps carry out institutional advancement in order to reach the stealthy appearance of rescuring that expands the bow and rescure the same or better effect of rescuring to stealthy appearance of rescuring, be prime for the problem of waiting to solve.

Therefore, there is a need to develop a new dental appliance to avoid the above problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide the dentistry and correct apparatus, dental apparatus suit and dentistry and correct the system to induce the deposition of maxillary palatal centre joint bone cheek tongue side direction through deformation and enlarge, back tooth district tooth with cheek tongue side direction removal under the effect of shell form body.

In order to achieve the purpose, the dental appliance of the utility model comprises a shell-shaped body, wherein the shell-shaped body is provided with a plurality of cavities for accommodating upper jaw teeth, the shell-shaped body is also provided with an upper palate arch for reshaping the arch, and two ends of the upper palate arch are respectively and partially connected with the gingival margin or the adjacent gingival margin at the lingual side of the back tooth area at the left side and the right side of the shell-shaped body; when the shell-shaped body acts on teeth, the palatal arch induces the buccal-lingual lateral expansion of maxillary palatal midriff bone deposition through deformation, and teeth in the posterior tooth area move in the buccal-lingual lateral direction under the action of the shell-shaped body.

Preferably, the lingual intervals of the posterior tooth areas on the left side and the right side of the shell-shaped body are different from the lingual intervals of the teeth in the corresponding posterior tooth areas on the left side and the right side.

Preferably, the upper faucial pillars are further provided with a reinforcement portion for enhancing expansion or contraction of the upper faucial pillars.

Further preferably, the reinforcement portion is at least one reinforcement ridge provided in the palatal arch and having a curvature identical to or different from that of the palate.

Further preferably, the ridge height of the reinforcing ridge is proportional to the bending resistance section coefficient.

Further preferably, the cross section of the reinforcing ridge along the sagittal plane in the proximal-distal direction is an interrupted cross section or a continuous cross section.

Further preferably, the cross section of the reinforced ridge in the proximal-distal direction is vertically arranged along the cross section of the palatal arch, is arranged above the cross section of the palatal arch or is arranged below the cross section of the palatal arch.

Further preferably, the cross section of the single reinforcing ridge in the proximal-distal direction is an arc or a semi-closed polygon.

Preferably, the upper arch is stiffer than the shell-like body in the area accommodating the maxillary teeth.

Further preferably, the palatal arch is different from the shell-like body in at least one of thickness, hardness, material and layer number characteristics.

Preferably, at least a portion of the palatal arch is a multi-layered structure.

Further preferably, a reinforcing arch wire is arranged between two adjacent layers of the multilayer structure.

Preferably, the palatal arch includes a palatal side and a lingual side, the palatal side being spaced from the palate by a distance of 1-2 mm.

Preferably, the upper faucial pillars are further provided with an adjusting portion for adjusting expansion or contraction of the upper faucial pillars.

Further preferably, the adjusting portion is an elastic telescopic structure, and the telescopic direction of the elastic telescopic structure is a buccal-lingual direction.

Preferably, the palatal arch and the shell-shaped body are of an integrally formed structure.

Preferably, the upper faucial pillars are further provided with magnets which expand or contract in the bucco-lingual direction and which are opposite in magnetism.

The utility model discloses a dental appliance suit, including the first shell form dental appliance who is used for the upper jaw and the second shell form dental appliance who is used for the lower jaw, first shell form dental appliance does the dentistry correct the apparatus, the shell form body of second shell form dental appliance is provided with a plurality of cavitys that hold the lower jaw tooth.

The utility model discloses a system is rescued to dentistry includes multiunit dental instrument suit, multiunit dental instrument suit includes at least one set of dental instrument suit, multiunit dental instrument suit has the geometrical shape that makes the tooth reposition to the target from initial position gradually and rescues the position.

Preferably, the palatal arch in the plurality of sets of dental appliances has different curvatures at different stages of correction.

Preferably, the palatal arch of the set of dental instruments further includes a reinforcing portion for enhancing expansion or contraction of the palatal arch.

Further preferably, the reinforcing part is at least one reinforcing ridge provided on the palatal arch and having a curvature identical to or different from that of the palate, and a ridge height of the reinforcing ridge is proportional to the bending resistance section coefficient.

It is further preferred that the ridge height of the reinforcing ridges in different sets of dental instruments is gradually reduced as the correction procedure progresses.

The dental appliance, the dental appliance set and the dental appliance system provided by the invention have the following beneficial effects:

by arranging the palatal arch for reshaping the arch at or near the gingival margin of the lingual side of the posterior dental area on the left side and the right side of the shell-shaped body, when the shell-shaped body acts on teeth, the palatal arch can induce buccally and lingually lateral expansion of maxillary palatal midriform bone deposition through deformation, the teeth in the posterior dental area move buccally and lingually under the action of the shell-shaped body, and the palatal arch can perform buccally and lingually directional distance expansion or reduction on the teeth in the posterior dental area. The combination of the palatal arch and the invisible tooth appliance not only ensures that the patient can conveniently take and wear the appliance and the appliance is comfortable, but also has corresponding correction effect. The dental appliance suit comprises an upper jaw tooth appliance and a lower jaw tooth appliance, the upper jaw tooth and the lower jaw tooth are accommodated respectively, and the upper jaw tooth and the lower jaw tooth can be corrected simultaneously. The dental appliance system comprises a series of dental appliance sets, and not only can the arch of the tooth be adjusted, but also the tooth can be corrected, so that the tooth moves from an initial position to a target position.

Drawings

Fig. 1a is a schematic structural view of a first dental appliance of embodiment 1 of the present invention;

fig. 1b is a schematic structural view of a first dental appliance according to embodiment 1 of the present invention along the direction a shown in fig. 1 a;

FIG. 2 is a schematic illustration of the distance between a first arch of palate and the palate of a user after the user wears the first dental appliance of FIG. 1 a;

fig. 3 is a schematic structural view of a second dental appliance of embodiment 2 of the present invention;

fig. 4a is a schematic cross-sectional view of a structure formed by three arc-shaped reinforcing ridges and a first palatal arch according to embodiment 2 of the present invention, taken along a mesial-distal direction;

fig. 4b is a schematic cross-sectional view of a structure formed by three arc-shaped reinforcing ridges and a first palatal arch according to embodiment 3 of the present invention, taken along the mesial-distal direction;

fig. 4c is a schematic cross-sectional view of a structure of a continuous reinforcing ridge and a first palatal arch according to embodiment 4 of the present invention, taken along the mesial-distal direction;

fig. 5a is a schematic structural view of a third dental appliance according to embodiment 5 of the present invention;

FIG. 5b is a schematic structural view of the crescent-shaped reinforcing ridge shown in FIG. 5 a;

fig. 6 is a schematic structural view of a fourth dental appliance according to embodiment 6 of the present invention;

fig. 7 is a schematic structural view of a fifth dental appliance according to embodiment 7 of the present invention;

fig. 8 is a schematic structural view of a sixth dental appliance according to embodiment 8 of the present invention;

fig. 9 is a schematic structural view of a seventh dental appliance according to embodiment 9 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

To the problem that prior art exists, the embodiment of the utility model provides an appliance is rescued in dentistry, including shell body and palatal arch, the palatal arch is used for making the arch form remold, shell body is used for holding user's upper jaw tooth.

The "posterior dental area" referred to in this example is defined according to the classification of teeth, including premolar and molar, shown as teeth of 4-8 by FDI notation, in pages 36-38 of the "introduction to oral medicine" published by the university of beijing medical press, 2 nd edition.

Fig. 1a is a schematic structural view of a first dental appliance according to embodiment 1 of the present invention. FIG. 1b is a schematic view of the first dental appliance along the direction A shown in FIG. 1 a.

In the embodiment of the present invention, the two ends of the upper palate arch are respectively and partially connected to the gingival margin or the adjacent gingival margin of the lingual side of the posterior tooth area on the left and right sides of the shell-shaped body. Referring to fig. 1a and 1b, a first dental appliance 1 has a first shell-like body 11 and a first maxillary arch 12. The first shell-shaped body 11 is for receiving maxillary teeth of a user, and the first maxillary arch 12 has one end portion connected to a gingival margin of a lingual side corresponding to the right second anterior molar 111 and the right first molar 112 of the first shell-shaped body 11 and the other end portion connected to a gingival margin of a lingual side corresponding to the left second anterior molar 113 and the left first molar 114 of the first shell-shaped body 11.

In some embodiments, the first shell-like body 11 is integrally formed with the first maxillary arch 12. In other embodiments of the present invention, the first shell-shaped body 11 and the first palatal arch 12 are formed separately, and then the first palatal arch 12 is fixedly connected to the first shell-shaped body 11.

In some embodiments of the present invention, two ends of the first palate arch 12 are respectively and partially connected to the gingival margin of the lingual side of the posterior teeth area on the left and right sides of the first shell-shaped body 11; specifically, the first palatal arch 12 is extendedly connected along the lingual gingival margin of the posterior dental area on the left and right sides of the first shell-shaped body 11.

In some embodiments of the present invention, two ends of the first palate arch 12 are respectively and partially connected to the adjacent gingival margin of the lingual side of the posterior teeth area on the left and right sides of the first shell-shaped body 11; specifically, the first palatal arch 12 is connected along the lingual crowns of the posterior areas on the left and right sides of the first shell-shaped body 11 in an extending manner, and the connection between the first palatal arch 12 and the first shell-shaped body 11 is not located at the lingual gingival margin.

In some embodiments, an end portion of the first palatal arch 12 is connected to or adjacent to the gingival margin of the lingual side corresponding to any one or more teeth in the left posterior dental area of the first shell-shaped body 11, and another end portion of the first palatal arch 12 is connected to or adjacent to the gingival margin of the lingual side corresponding to any one or more teeth in the right posterior dental area of the first shell-shaped body 11. The plurality of teeth may be at least two teeth arranged in sequence, or at least two teeth arranged discontinuously, and in the case of at least two teeth arranged discontinuously, the first palatal arch 12 is at least two.

In some embodiments of the present invention, the two ends of the first palate arch 12 are symmetrical to the junction of the lingual side of the posterior teeth area on the left and right sides of the first shell-shaped body 11 respectively with respect to the tooth midline of the first shell-shaped body 11.

FIG. 2 is a schematic illustration of the distance between a first arch of palate and the palate of a user after the user wears the first dental appliance of FIG. 1 a.

Referring to fig. 1a and 2, the first palatal arch 12 includes a lingual side 121 and a palatal side 122, the lingual side 121 facing a tongue (not shown) of the user and the palatal side 122 facing a palate 21 of the user when the user wears the first shell-like body 11.

In some embodiments of the present invention, referring to FIG. 2, any point on the surface of the palatal side 122, such as C₁Extends in the direction B until intersecting the surface of the upper jaw 21 facing the palatal side 122 at C₂The palatal side 122 is spaced from the palate 21 by a distance C₁And C₂A distance h therebetween₁. In particular, h₁1-2mm, and the B direction is a direction perpendicular to the tangent plane at point C1.

After the user wears the first shell-shaped body 11, the first shell-shaped body 11 interacts with the teeth of the user, and simultaneously the first upper palatal arch 12 can induce the deposition of maxillary palatal suture bone through deformation, the expansion direction of the maxillary palatal suture bone deposition is expanded towards the bucco-lingual side direction, and the teeth in the rear dental area move the teeth contained in the first shell-shaped body 11 towards the bucco-lingual side direction under the action of the first shell-shaped body 11, so that the first upper palatal arch 12 realizes the remodeling of the dental arch shape.

In some embodiments of the present invention, the spacing between the left and right sides of the first shell-shaped body 11 and the spacing between the left and right sides of the corresponding teeth are different. The teeth corresponding to the left and right rear tooth areas refer to teeth which are respectively accommodated in the left and right rear tooth area cavities of the first shell-shaped body 11 after the user wears the first shell-shaped body 11.

When the lingual intervals of the left and right posterior tooth areas of the first shell-shaped body 11 are greater than the lingual intervals of the teeth of the corresponding left and right posterior tooth areas, the first palatal arch 12 can play a role in arch expansion while the first shell-shaped body 11 interacts with the teeth of the user.

When the lingual intervals of the left and right posterior tooth areas of the first shell-shaped body 11 are smaller than the lingual intervals of the teeth of the corresponding left and right posterior tooth areas, the first palatal arch 12 can play a role in arch reduction while the first shell-shaped body 11 interacts with the teeth of the user.

In some embodiments, the first palatal arch 12 is different from the first shell-shaped body 11 in at least one of thickness, hardness, material and layer number characteristics, such that the stiffness of the first palatal arch 12 is greater than the stiffness of the first shell-shaped body 11 in the area for receiving the user's maxillary teeth, such that the first palatal arch 12 generates sufficient force to the first shell-shaped body 11 to produce the effects of expanding and contracting the arch.

Fig. 3 is a schematic structural view of a second dental appliance according to embodiment 2 of the present invention.

In some embodiments of the present invention, the palatal arch is provided with a reinforcement portion that enhances expansion or contraction of the palatal arch. The reinforcing part is at least one reinforcing ridge which is arranged on the palatal arch and is consistent with or different from the bending radian of the palate. The section of the reinforcing ridge along the near-far direction of the sagittal plane is an interrupted section or a continuous section, and when the section is a continuous section, the reinforcing ridge can generate sufficient acting force, so that the effect of expanding or contracting the arch is achieved.

Referring to fig. 3, the second dental appliance 3 differs from the first dental appliance 1 of example 1 mainly in that: in the second dental appliance 3, the first palatal arch 12 has a first reinforcement portion in the mesial-distal direction, i.e., a first arc-shaped reinforcement ridge 31, a second arc-shaped reinforcement ridge 32, and a third arc-shaped reinforcement ridge 33, which are sequentially arranged in the direction E. The arrangement direction of each arc reinforcing ridge is directed from any point of the junction of one end of the first palatal arch 12 and the first shell-shaped body 11 to any point of the junction of the other end of the first palatal arch 12 and the first shell-shaped body 11 along the surface of the first palatal arch 12 where each arc reinforcing ridge is located.

Referring to fig. 3, the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32, and the third arc-shaped reinforcing ridge 33 are all located on the palatal side surface 122 of the first palatal arch 12 and are integrally molded with the first palatal arch 12 for ease of fabrication. The dental appliance can be prepared in a hot-press forming or direct 3D printing mode, wherein when the hot-press forming is adopted, after a corresponding model can be directly printed out in a 3D mode, the dental appliance is prepared by pressing a film, and then the dental appliance is cut to obtain the required dental appliance.

In some embodiments of the present invention, the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 are formed separately or integrally and then fixedly connected to the first palate arch 12.

When the section of the reinforcing ridge along the near-far direction of the sagittal plane is an interrupted section, the reinforcing ridge is arranged on the palatal side surface of the palatal arch, and partial area of the reinforcing ridge is contacted with the palate of a user. Specifically, the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 are arranged on the palate side surface 122, partial regions of any one or more of the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 are in contact with the palate of the user, and the regions in contact with the palate of the user are multiple discontinuous regions, so that the stimulation to the palate of the user is reduced as much as possible, and the wearing experience is improved.

In some embodiments of the present invention, the cross section of the reinforced ridge in the proximal-distal direction is vertically arranged along the cross section of the palatal arch, arranged above the cross section of the palatal arch, or arranged below the cross section of the palatal arch. More specifically, the section of the reinforcing ridge in the proximal-distal direction of the cross section is a sinusoidal section which is vertically arranged along the cross section of the upper faucial arch, and the reinforcing ridge is arranged above or below the cross section of the upper faucial arch and is only arranged on one side of the upper side or the lower side.

In some embodiments of the present invention, the cross section of the reinforced ridge in the proximal and distal directions is an arc or a semi-closed polygon. More specifically, the shape of the cross section is any one or more of a sawtooth shape, a wave shape, an oval shape and a rectangular arc.

Fig. 4a is a cross-sectional view of a structure formed by three curved reinforcing ridges and a first palatal arch according to embodiment 2 of the present invention, taken along the mesial-distal direction. Fig. 4b is a cross-sectional view of a structure formed by three curved reinforcing ridges and a first palatal arch according to embodiment 3 of the present invention, taken along the mesial-distal direction. Fig. 4c is a cross-sectional view of a structure of a continuous reinforcing ridge and a first palatal arch according to embodiment 4 of the present invention taken along a mesial-distal direction.

Referring to fig. 4a, a cross section of the first reinforcing portion formed by the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 along the proximal-distal direction is an interrupted cross section, and the interrupted cross section is in the shape of a semi-closed rounded rectangle. The first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 are reinforcing ridges which are arranged above the cross section of the first palate arch 12 and are arranged on one side, and the protruding direction of the reinforcing ridges is the protruding direction from the tongue side to the palate side.

Referring to fig. 3 and 4b, the fourth arc-shaped reinforcing ridge 41, the fifth arc-shaped reinforcing ridge 42 and the sixth arc-shaped reinforcing ridge 43 are arranged along the buccal-lingual direction substantially the same as the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 are arranged along the buccal-lingual direction, and the second reinforcing part formed by the fourth arc-shaped reinforcing ridge 41, the fifth arc-shaped reinforcing ridge 42 and the sixth arc-shaped reinforcing ridge 43 has a section along the mesial-distal direction, which is an interrupted section, and the interrupted section is in the shape of a semi-closed ring. The fourth arc-shaped reinforcing ridge 41, the fifth arc-shaped reinforcing ridge 42 and the sixth arc-shaped reinforcing ridge 43 are reinforcing ridges which are arranged below the cross section of the first palate arch 12 and are arranged on one side, and the protruding direction of the reinforcing ridges is from the palate side to the tongue side.

Referring to fig. 3 and 4c, the arrangement of the continuous reinforcing ridge 44 in the buccolingual direction is substantially the same as that of any one of the first, second and third arc-shaped reinforcing

ridges

31, 32 and 33, respectively. The cross section of the continuous reinforcing ridge 44 in the mesial-distal direction is a continuous cross section, which is wavy in shape. The continuous reinforcing ridge 44 is a reinforcing ridge that is continuously provided up and down along the cross section of the first maxillary arch 12.

Referring to fig. 3 and 4a, when the user wears the second dental appliance 3, the first shell-shaped body 11 acts on the teeth of the user, so that the two ends of the first palatal arch 12 respectively bear forces F in opposite directions, and the vertical distance from any point on the surface of the first palatal arch 12 to the stressed point is H. Because the vertical distance H from any point on the surface of the first palate arch 12 to the stress point is different, the moment M borne by each point is also different. Specifically, since M ═ F × H, M increases linearly as the vertical distance H from any point on the first palatal arch 12 to the point of stress increases.

To ensure that the maximum stress on the cross section of the first palatal arch 12 is equal or similar, the bending strength of the first palatal arch 12 is improved to the maximum extent, and the material utilization rate is also improved to the maximum extent. Referring to fig. 4a, the vertical distance of each reinforcing ridge from the point of greatest distance where the first maxillary arch 12 connects to the first shell-like body 11 to the cross section of the first maxillary arch 12 is defined as the ridge height. The moment M on any one section of the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 is in direct proportion to the bending-resistant section coefficient W. In particular, a constant

M/W, bending-resistant section modulus

For a rectangle with height h and width b, the bending section coefficient W is b × h²And 6, ensuring that the squares of h of different sections increase linearly, thus ensuring equal stress. Thereby fully exploiting the stiffness of the first superior palatal arch 12.

In some embodiments, when the second dental appliance 3 is worn by the user, the curvature of any one of the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32, and the third arc-shaped reinforcing ridge 33 is the same as or different from the curvature of the upper jaw of the user corresponding to each other.

In some embodiments, the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 are all disposed on the palatal side 122 of the first palatal arch 12. Any one of the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33 does not contact with the upper jaw of the user, so that the discomfort of wearing the patient after the contact is avoided.

In some embodiments of the present invention, in the first arc-shaped reinforcing ridge 31, the second arc-shaped reinforcing ridge 32 and the third arc-shaped reinforcing ridge 33, two adjacent arc-shaped reinforcing ridges are along the same or different distances between the near and far directions, that is, the reinforcing ridge can be uniformly disposed on the palatal arch or non-uniformly disposed on the palatal arch.

Fig. 5a is a schematic structural view of a third dental appliance according to embodiment 5 of the present invention. Fig. 5b is a schematic structural view of the crescent reinforcing ridge shown in fig. 5 a.

With reference to fig. 5a, the third dental appliance 5 differs from the first dental appliance 1 of example 1 mainly in that: the lingual side 121 of the first maxillary arch 12 is provided with a plurality of crescent-shaped reinforcing ridges 51 to constitute a reinforcement of the third dental appliance 5.

Any point along the first edge 123 of the first palatal arch 12 of a single said crescent-shaped reinforcing ridge 51 points along the surface of the first palatal arch 12 where the crescent-shaped reinforcing ridge 51 is located to any point along the second edge 124 of the first palatal arch 12; the arrangement direction of a plurality of crescent-shaped reinforcing ridges 51 is set in the buccal and lingual directions.

Referring to fig. 5a and 5b, the crescent-shaped reinforcing ridge 51 is formed by extending and joining a concave curved surface 511 and a convex curved surface 512. The section of the crescent reinforcing ridge 51 along the buccal and lingual direction is a discontinuous section, and the shape of the discontinuous section is a semi-closed triangle.

Fig. 6 is a schematic structural view of a fourth dental appliance according to embodiment 6 of the present invention.

Referring to fig. 6, the fourth dental appliance 6 has a second palatal arch 61, the second palatal arch 61 differing from the first palatal arch 12 of example 2 primarily in that: the second maxillary arch 61 has a curved arch 611 in the middle thereof which is further curved toward the palate, so that the degree of curvature of the second maxillary arch 61 in the setting direction varies unevenly.

In addition, the second maxillary arch 61 is provided with an irregular arc-shaped reinforcing ridge 62, and the irregular arc-shaped reinforcing ridge 62 is different from the third arc-shaped reinforcing ridge 33 in that: the middle of the irregular arc-shaped reinforcing ridge 62 has a curved arc-shaped ridge 621 that is further curved toward the palate to accommodate the degree of curvature of the curved arch 611.

In some embodiments of the present invention, the palatal arch is provided with an adjustment portion for adjusting the expansion or contraction of the palatal arch. Specifically, the adjustment part is elastic telescopic structure, can carry out the adjustment that elastic telescopic is based on patient's the regulation demand of correcting.

Fig. 7 is a schematic structural view of a fifth dental appliance according to embodiment 7 of the present invention.

Referring to fig. 7, the fifth dental appliance 7 differs from the first dental appliance 1 of example 1 mainly in that: the third palatal arch 71 of the fifth dental appliance 7 is formed by sequentially connecting a first short arch 711, a first elastic expansion structure 712, and a second short arch 713, and the third palatal arch 71 is bent toward the palate of the user, and the expansion direction of the first elastic expansion structure 712 is the bucco-lingual direction, that is, X shown in fig. 7₁X₂And (4) direction.

In some embodiments of the present invention, the first elastic extension structure 712 is symmetrical along the tooth centerline.

Fig. 8 is a schematic structural view of a sixth dental appliance according to embodiment 8 of the present invention.

With reference to fig. 8, the sixth dental appliance 8 differs from the fifth dental appliance 7 of example 7 mainly in that: the palatal arch of the sixth dental appliance 8 is divided into a third short arch 81, a fourth short arch 82 and a fifth short arch 83 by a second elastic expansion structure 84 and a third elastic expansion structure 85. The second elastically stretchable structure 84 and the third elastically stretchable structure 85 are stretchable in both of the bucco-lingual direction.

In some embodiments, the second resilient flexible structure 84 and the third resilient flexible structure 85 are symmetrical along the midline of the tooth.

In some embodiments of the present invention, the palatal arch is provided with magnets that expand or contract in the bucco-lingual direction and that are opposite in magnetic properties. Please refer to fig. 7 and 8 for the arrangement of the magnet.

In some embodiments of the present invention, the elastic extension structure may also be an elastic body, such as a spring.

In some embodiments of the invention, at least a portion of the palatal arch is a multi-layered structure. And a reinforcing arch wire is arranged between two adjacent layers of the multilayer structure.

Referring to fig. 9, the seventh dental appliance 9 differs from the first dental appliance 1 of example 1 mainly in that: one end portion of the first maxillary arch 12 is connected to the gingival margin on the lingual side corresponding to the right second anterior molar 111 and the right first anterior molar 115 of the first shell-shaped body 11, and the other end portion is connected to the gingival margin on the lingual side corresponding to the left second anterior molar 113 and the left first anterior molar 116 of the first shell-shaped body 11.

An embodiment of the present invention further provides a dental kit, comprising a first shell-shaped dental instrument and a second shell-shaped dental instrument. The first shell-shaped dental appliance is the dental appliance provided by the embodiment of the invention, and the specific implementation form of the first shell-shaped dental appliance is any one of the first dental appliance 1, the second dental appliance 3, the third dental appliance 5, the fourth dental appliance 6, the fifth dental appliance 7, the sixth dental appliance 8 and the seventh dental appliance 9. The shell-like body of the second shell-like dental appliance is provided with a plurality of cavities for accommodating mandibular teeth.

The embodiment of the utility model provides a system is rescued to dentistry is still provided, including multiunit dental appliance suit, multiunit dental appliance suit includes at least one set of the embodiment of the utility model provides an in the dental appliance suit, and have the geometry that makes the tooth reposition to the target correction position gradually from initial position, realize carrying out the tooth when bow-shaped adjustment and rescure.

In some embodiments, the dental correction system includes a first set of dental appliances for a first correction phase and a second set of dental appliances for a second correction phase, the second correction phase being temporally located after the first correction phase.

Specifically, the shell-shaped body of the second dental appliance set for accommodating mandibular teeth and the shell-shaped body of the first dental appliance set for accommodating mandibular teeth have different geometric shapes, so that the mandibular teeth are gradually positioned to the target correcting position to be achieved in the second correcting stage, and the correcting effect is achieved.

The shell-shaped body of the second dental appliance set used for accommodating the maxillary teeth is different from the shell-shaped body of the first dental appliance set used for accommodating the maxillary teeth in geometric shape, so that the maxillary teeth are gradually positioned to the target correction position to be reached in the second correction stage. And the curvature of the palatal arch connected with the shell-shaped body of the second dental appliance set for accommodating the maxillary teeth is different from the curvature of the palatal arch connected with the shell-shaped body of the first dental appliance set for accommodating the maxillary teeth, and the curvature is adjusted according to the correction requirement.

Taking the first dental appliance 1 shown in fig. 1a as an example, when it is desired to achieve the effect of dilating the arch through the first and second correction stages, the curvature of the first palatal arch 12 of the first dental appliance 1 applied to the second correction procedure is greater than the curvature of the first palatal arch 12 applied to the first correction procedure.

When it is desired to achieve a pantograph effect by the first and second correction stages, the curvature of the first palatal arch 12 of the first dental appliance 1 applied to the second correction procedure is less than the curvature of the first palatal arch 12 applied to the first correction procedure.

The utility model discloses in some embodiments, palatal arch in the dental instrument suit still is equipped with the reinforcing portion that the palatal arch expanded or contracted, the reinforcing portion is for locating palatal arch and with the unanimous or different at least one reinforcing ridge of the crooked radian of palatal arch, along with correcting going on of process, the ridge height of the reinforcing ridge in the different dental instrument suits reduces gradually, along with correcting going on of process, when expanding the bow or contracting the bow and reaching the certain degree, only need to expand the bow or contract the result of bow carry out the state maintain can, consequently can strengthen the adjustment of ridge height according to the needs of correcting the process.

For a specific implementation form of the reinforcing ridge, please refer to the above description of the reinforcing portion of any one of the second dental appliance 3, the third dental appliance 5 and the fourth dental appliance 6, which is not described herein again.

Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the appended claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims

1. The utility model provides an appliance is rescued in dentistry, includes shell-like body, shell-like body is provided with a plurality of cavitys that hold the upper jaw tooth, its characterized in that:

the shell-shaped body is also provided with a palatal arch for reshaping the dental arch, and two ends of the palatal arch are respectively and partially connected with the gingival margin at the lingual side of the back dental areas at the left side and the right side of the shell-shaped body or the gingival margin adjacent to the lingual side;

when the shell-shaped body acts on teeth, the palatal arch induces the buccal-lingual lateral expansion of maxillary palatal midriff bone deposition through deformation, and teeth in the posterior tooth area move in the buccal-lingual lateral direction under the action of the shell-shaped body.

2. The dental appliance of claim 1, wherein the lingual spacing of the posterior areas on the left and right sides of the shell-shaped body is different from the lingual spacing of the teeth in the corresponding posterior areas on the left and right sides.

3. The dental appliance of claim 1, wherein the palatal arch is further provided with a reinforcement that enhances expansion or contraction of the palatal arch.

4. The dental appliance of claim 3, wherein the reinforcement is at least one reinforcement ridge provided to the palatal arch and conforming to or differing from a curvature of the palate.

5. The dental appliance of claim 4, wherein the ridge height of the reinforcing ridges is proportional to the bending section factor.

6. The dental appliance of claim 4, wherein the reinforcing ridge has a cross section in the sagittal proximal-distal direction that is either an interrupted cross section or a continuous cross section.

7. The dental appliance of claim 4, wherein the cross section of the reinforcing ridge in the mesial-distal direction is disposed up and down, above, or below the cross section of the palatal arch.

8. The dental appliance of claim 7, wherein a mesial-distal cross-section of a single reinforcing ridge is an arc or a semi-closed polygon.

9. The dental appliance of claim 1, wherein the stiffness of the palatal arch is greater than the stiffness of the shell-like body in the area to receive maxillary teeth.

10. The dental appliance of claim 9, wherein the palatal arch differs from the shell body in at least one of thickness, hardness, material, and layer number characteristics.

11. The dental appliance of claim 1, wherein at least a portion of the palatal arch is a multi-layered structure.

12. The dental appliance of claim 11, wherein a reinforcing archwire is disposed between adjacent two layers of the multi-layered structure.

13. The dental appliance of claim 1, wherein the palatal arch includes palatal sides and lingual sides, the palatal sides being spaced from the palate by a distance of 1-2 mm.

14. The dental appliance of claim 1, wherein the palatal arch is further provided with an adjustment portion that adjusts expansion or contraction of the palatal arch.

15. The dental appliance of claim 14, wherein the adjustment portion is an elastically stretchable structure, and a stretching direction of the elastically stretchable structure is a buccal-lingual direction.

16. The dental appliance of claim 1, wherein the palatal arch is an integrally formed structure with the shell-like body.

17. The dental appliance of claim 1, wherein the palatal arch further includes magnets of opposite polarity that expand or contract in a bucco-lingual direction.

18. A set of dental appliances comprising a first shell-like dental appliance for the upper jaw and a second shell-like dental appliance for the lower jaw, wherein the first shell-like dental appliance is a dental appliance as claimed in any of claims 1 to 17 and the shell-like body of the second shell-like dental appliance is provided with cavities for receiving the teeth of the lower jaw.

19. A dental appliance system comprising a plurality of sets of dental appliances, wherein the plurality of sets of dental appliances comprises at least one set of dental appliances as described in claim 18, the plurality of sets of dental appliances having a geometry that gradually repositions the teeth from an initial position to a target appliance position.

20. The dental appliance system of claim 19, wherein the palatal arch in the plurality of sets of dental appliances has different curvature at different stages of the appliance.

21. The dental appliance system of claim 19, wherein the palatal arch in the set of dental instruments is further provided with a reinforcement that enhances expansion or contraction of the palatal arch.

22. The dental correction system of claim 21, wherein the reinforcement is at least one reinforcement ridge provided to the palatal arch and having a curvature that is identical to or different from a curvature of the palate, wherein a ridge height of the reinforcement ridge is proportional to the bending section modulus.

23. The dental correction system of claim 22, wherein the ridge heights of the reinforcing ridges in different sets of dental appliances are progressively reduced as the correction process progresses.