CN112790880A

CN112790880A - Creep-resistant tooth socket and manufacturing method thereof

Info

Publication number: CN112790880A
Application number: CN202110144670.0A
Authority: CN
Inventors: 黄成源
Original assignee: Shanghai Yunquan New Material Technology Co ltd
Current assignee: Shanghai Markus Medical Technology Co.,Ltd.
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-05-14

Abstract

The invention relates to a creep-resistant tooth socket and a manufacturing method thereof, wherein the method comprises the following steps: preparing a dental model, wherein grooves are formed in the surface of the dental model, corresponding to teeth to be corrected, on the dental model; providing a membrane, manufacturing the tooth socket through the membrane and the tooth jaw model, and forming convex ribs on the manufactured tooth socket corresponding to the grooves, thereby finishing the manufacturing of the tooth socket. The anti-creep tooth socket manufactured by the invention is provided with the convex ribs, the structural strength of the tooth socket is enhanced through the convex ribs so as to resist the creep effect of the tooth socket, the stress retention force of the tooth socket is enhanced, and the tooth socket can maintain the initial corrective force within a certain time, so that the tooth corrective effect is improved.

Description

Creep-resistant tooth socket and manufacturing method thereof

Technical Field

The invention relates to the technical field of tooth orthodontics, in particular to a creep-resistant tooth socket and a manufacturing method thereof.

Background

Compared with the traditional orthodontic technology, the bracket-free invisible orthodontic technology integrating the oral medicine technology, the computer software technology, the material science and the 3D printing technology is gradually favored by more and more young patients. The bracket-free invisible appliance (also called invisible tooth socket) has the characteristics of transparency, beauty, comfort and the like, and can completely embody the natural color state of the original teeth because the bracket-free invisible appliance is transparent and has no shelter on the teeth.

The straightening process of the invisible tooth socket is that a patient wears different invisible tooth sockets according to a design program at different periods, so that teeth of an upper jaw or a lower jaw can move according to a preset design, and finally the teeth are straightened.

After the invisible braces are worn, corrective force can be applied to teeth, and the material of the invisible braces is medical-grade plastic, so that the corrective force applied to the teeth by the invisible braces can be gradually reduced due to the creep effect of the material, and the corrective effect of the teeth is influenced. The Creep effect, also known as Creep Modulus (Creep Modulus), is a function of the change in the Creep Modulus of a material due to many factors, such as the degree of stress, temperature, time, and environment. With time, the creep modulus of the material is reduced, and the higher the stress degree is, the reduction speed of the creep modulus is accelerated.

Referring to fig. 13, which shows test data of a stress retention test performed on the existing invisible braces, it can be seen from the test data in fig. 13 that, in a correction period of simulated wearing for 10 days, the stress retention of the existing invisible braces is reduced to 50% of the initial stress 60% from day 4, while the correction period of the conventional pair of braces is 14 days, and thus, the correction strength of the previous 4 days is better maintained and the correction effect is higher in the correction period of the pair of invisible braces, and after day 4, the correction strength of the braces is greatly reduced due to the creep effect, thereby affecting the correction effect.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a creep-resistant tooth socket and a manufacturing method thereof, and solves the problem that the orthodontic effect is influenced because the orthodontic force is reduced due to the creep effect in the wearing process of the existing invisible tooth socket.

The technical scheme for realizing the purpose is as follows:

the invention provides a manufacturing method of a creep-resistant tooth socket, which comprises the following steps:

preparing a dental model, wherein grooves are formed in the surface of a dental model corresponding to teeth on the dental model;

providing a membrane, manufacturing the tooth socket through the membrane and the tooth jaw model, and forming convex ribs on the manufactured tooth socket corresponding to the grooves, thereby finishing the manufacturing of the tooth socket.

The anti-creep tooth socket manufactured by the invention is provided with the convex ribs, the structural strength of the tooth socket is enhanced through the convex ribs so as to resist the creep effect of the tooth socket, the stress holding force of the tooth socket is enhanced, the tooth socket can maintain the initial correction force within a certain time, the lasting holding of the initial correction force is realized, the correction force of the tooth socket can be maintained within the correction period, and the correction effect of teeth is improved.

The manufacturing method of the creep-resistant tooth socket is further improved in that the arrangement direction of the grooves is designed according to the orthodontic scheme of the teeth:

if the stress positions of the teeth to be corrected are connected into a line, arranging the grooves on the corresponding tooth dies in the direction perpendicular to the stress positions connected into the line;

and if the stress positions of the teeth to be corrected are concentrated on one point, the grooves are scattered on the corresponding dental model by taking the concentrated stress position point as the center.

In a further improvement of the method of making a creep resistant mouthpiece of the present invention, the grooves are provided in the mold corresponding to the surface receiving the corrective force.

The manufacturing method of the creep-resistant tooth socket is further improved in that when the grooves are vertical, the grooves are arranged on the inner surface and the outer surface of the tooth mould, and the corresponding grooves on the inner surface and the outer surface are communicated.

The manufacturing method of the creep-resistant tooth socket is further improved in that the cross-sectional shape of the groove is V-shaped.

The invention also provides a creep-resistant tooth socket, and convex ribs are arranged on the surface of the tooth socket, which is attached to teeth.

The creep-resistant tooth socket is further improved in that if the stress positions of teeth to be corrected are connected into a line, the arrangement direction of the convex ribs is vertical to the stress positions connected into the line;

if the stress position of the tooth to be corrected is concentrated on one point, the arrangement direction of the convex ribs takes the concentrated stress position point as the center to be in a scattering shape.

In a further development of the creep-resistant braces of the present invention, the ribs are disposed in correspondence with the teeth to be corrected and the ribs are disposed on the surface of the brace on the side to which the corrective force is applied.

In a further improvement of the present creep resistant mouthpiece, the mouthpiece includes a first inner side facing the outer surface of the teeth and a second inner side facing the inner surface of the teeth;

when the fin is vertical form, the fin is located on the first medial surface and the second medial surface of facing, first medial surface with the fin that corresponds on the second medial surface is connected.

In a further improvement of the creep resistant mouthpiece of the present invention, the outer profile of the protruding ribs is V-shaped.

Drawings

FIG. 1 is a flow chart of a method of making a creep-resistant mouthpiece of the present invention.

FIG. 2 is a schematic view of a dental model for a creep-resistant mouthpiece and a method of making the same according to the present invention.

FIG. 3 is a schematic representation of the structure of the creep resistant mouthpiece of the present invention.

Figure 4 is a cross-sectional view of a first embodiment of a ribbed portion of a creep-resistant mouthpiece of the present invention.

Figure 5 is a cross-sectional view of a second embodiment of a ribbed portion of a creep-resistant mouthpiece of the present invention.

Figure 6 is a cross-sectional view of a third embodiment of a rib portion provided on a creep-resistant mouthpiece of the present invention.

Fig. 7 is a front view of a single tooth of the present invention.

Fig. 8 is a schematic view of the single tooth of fig. 7 in a top view and its corrected position.

Fig. 9 is a schematic view of the single tooth of fig. 7 in a side view and in a corrected position.

FIG. 10 is a schematic view of a creep resistant mouthpiece of the present invention with the openings facing upward.

Fig. 11 is a partially enlarged schematic view of a portion a of fig. 10.

FIG. 12 is a graph of experimental data for a stress retention test of a creep resistant mouthpiece of the present invention.

FIG. 13 is a graph of test data for a stress retention test of a prior art invisible mouthpiece.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1, the invention provides a creep-resistant tooth socket and a manufacturing method thereof, which are used for solving the problem that the existing invisible tooth socket reduces the correction force due to the creep effect and further affects the correction effect when being worn. The creep-resistant tooth socket is provided with the convex ribs on the surface which is attached to teeth, and the structural strength of the tooth socket is enhanced through the arranged convex ribs so as to resist the creep effect of the tooth socket, so that the tooth socket can provide lasting corrective force for the teeth and ensure the corrective effect. Compared with the existing invisible braces, the creep-resistant braces of the invention have the advantages that the straightening force is kept more durable, the straightening effect of each straightening period can be improved, and the time for straightening teeth can be further shortened on the premise of ensuring the straightening effect of the teeth. The creep-resistant mouthpiece and the method of making the same according to the present invention will be described with reference to the accompanying drawings.

Referring to FIG. 3, a schematic diagram of the construction of the creep resistant mouthpiece of the present invention is shown. Referring to FIG. 4, a cross-sectional view of a first embodiment of the ribs on the creep resistant mouthpiece of the present invention is shown. The structure of the creep resistant mouthpiece of the present invention is described below with reference to figures 3 and 4.

As shown in figures 3 and 4, the present invention provides a creep-resistant mouthpiece 30 having ribs 31 on the teeth-engaging surface.

This anti-creep facing 30 is used for realizing the orthodontic, during the use, wear this facing 30 on patient's tooth, facing 30 can exert the power of correcting to patient's tooth to it is just abnormal to correct tooth realization, combine shown in fig. 10 and 11, the surface that laminates mutually with the tooth on facing 30 sets up fin 31, this fin 31 can increase facing 30's structural strength, resist facing 30's creep effect, can provide comparatively lasting power of correcting for the tooth, thereby improve the orthodontic effect of tooth, can let tooth faster realization correct. The mouthpiece 30 of the present invention has a high stress retention force that is capable of maintaining more than 90% of the initial corrective force over the corrective period, where the stress retention force represents the rate of change of the corrective force provided by the material over time. The higher the stress retention, the better the corrective force provided by the material can be retained.

In one embodiment of the present invention, the mouthpiece 30 has an inner side and an outer side, and the inner side of the mouthpiece 30 is configured to fit against the teeth when worn.

The convex ribs 31 are arranged on the inner side face of the tooth socket 30, the convex ribs 31 are provided with a plurality of strips, the plurality of strips of convex ribs 31 can be arranged on the inner side face of the tooth socket 30 at equal intervals, and when the convex ribs 31 are arranged at equal intervals, the intervals of the convex ribs 31 are between 0.01mm and 1.5 mm. The plurality of ribs 31 may also be disposed on the inner side of the mouthpiece 30 at unequal intervals. The plurality of ribs 31 may be continuously disposed on the inner side surface of the mouthpiece 30, that is, two adjacent ribs 31 are connected together.

The convex ribs 31 are arranged at the positions, corresponding to each tooth, of the inner side face of the tooth socket 30, so that the overall strength of the tooth socket 30 can be improved, the correction force of the tooth socket 30 can be kept more lasting, and the correction effect of the tooth socket 30 is improved.

In one embodiment of the present invention, the ribs 31 are provided on the inner side surfaces of the braces 30, and the ribs 31 are provided on the braces 30 at positions corresponding to teeth to be corrected, since the teeth are corrected by applying a correction force to the teeth by the braces 30, the correction force is reduced by a creep effect at the portions of the braces 30 to which the correction force is applied, and the ribs 31 are provided on the portions of the braces 30 to which the correction force is applied, so that the structural strength at the specific portions can be increased to resist the creep effect.

In one embodiment of the present invention, if the force-receiving positions of the teeth to be corrected are connected in a line, the rib 31 is disposed in a direction perpendicular to the force-receiving positions connected in a line; when the force-receiving positions of the teeth to be corrected are concentrated at one point, the direction of the ribs 31 is scattered around the concentrated force-receiving position point.

The arrangement direction of the convex rib 31 on the inner side surface of the tooth socket 30 has three modes of vertical direction, horizontal direction and oblique direction, and when the arrangement direction of the convex rib 31 is designed, the arrangement needs to be carried out according to the tooth correction scheme. As shown in fig. 7 and 8, the tooth 10 is angled from the straightened position shown in phantom in plan view, and to achieve straightening of the tooth 10, it is necessary to apply a straightening force F1 urging the tooth outwardly on the inner side of the first end of the tooth 10 and a straightening force F2 urging the tooth inwardly on the outer side of the second end, so that the tooth 10 can be rotated to the straightened position shown in phantom by the straightening forces F1 and F2. The position point where the corrective force F1 acts on the tooth 10, that is, the force-receiving position point of the tooth 10, may be vertically connected to form a straight line on the inner side of the tooth 10, and the rib 31 is disposed in a direction perpendicular to the vertical straight line, that is, the rib 31 is disposed transversely on the inner side surface of the mouthpiece 30. The position point of the corrective force F2 applied to the tooth 10, i.e. the force-receiving position point of the tooth 10, may be vertically connected to form a straight line on the outer side of the tooth 10, and the rib 31 is disposed in a direction perpendicular to the vertical straight line, i.e. the rib 31 is disposed laterally on the inner side of the mouthpiece 30. The inner side of the tooth 10 refers to the side of the tooth 10 near the tongue, and the outer side of the tooth 10 refers to the side of the tooth 10 near the lips.

If the teeth 10 are to be rotated in the orthodontic plan, the teeth 10 may be rotated simultaneously in the inner and outer sides as shown in fig. 8, or may be rotated in one side, and the ribs 31 may be arranged in the transverse direction. Because the restriction of facing 30 to tooth 10 is along the first end or the second end of the spacing tooth 10 of vertical direction, the part that facing 30 corresponds tooth 10 easily makes the restriction decline because of the creep effect in the transverse direction, and protruding rib 31 sets up along the transverse direction, the structural strength of the part that multiplicable facing 30 corresponds in the transverse direction to resist the creep effect, let facing 30 keep the restriction to tooth 10, thereby can keep its orthodontic strength, improve the orthodontic effect.

As shown in fig. 7 and 9, the tooth 10 is at a certain angle with the straightening position shown by the dotted line in the side view, if straightening of the tooth 10 is to be achieved, a straightening force F3 pushing inward is applied to the outer side of the tooth 10, the straightening force F3 is applied to the position point of the tooth 10, that is, the force-receiving position point of the tooth 10, and the outer side of the tooth 10 is connected in the transverse direction to form a straight line, and the rib 31 is arranged in the direction perpendicular to the transverse straight line, that is, the rib 31 is arranged vertically on the inner side of the mouthpiece 30.

If the teeth 10 are to be straightened, the teeth 10 are pushed inwardly or outwardly away from the root, and the ribs 31 are oriented vertically, as shown in fig. 10 and 11. The upper part or the lower part (for the upper teeth, the position pushed by the tooth socket is the lower part, for the lower teeth, the position pushed by the tooth socket is the upper part) of the tooth 10 is pushed by the tooth socket 30 to rotate inwards or outwards, the part of the tooth socket 30 corresponding to the tooth 10 is easy to reduce the restraint effect due to the creep effect in the vertical direction, and the convex rib 31 is arranged along the vertical direction, so that the structural strength of the part of the tooth socket 30 corresponding to the vertical direction can be increased, the tooth socket 30 keeps the pushing limitation on the tooth 10, and the correction effect is improved.

If the tooth 10 needs to be straightened, the tooth is pushed inward or outward by taking a corner of the tooth 10 as a concentrated force point, and the rib 31 is arranged obliquely and is scattered by taking the concentrated point as a center.

In one embodiment of the present invention, the ribs 31 are provided corresponding to teeth to be corrected, and the ribs 31 are provided on a surface of the mouthpiece 30 on a side to which a correction force is applied.

The inner side surfaces of the tooth socket 30 comprise a first inner side surface attached to the outer side surface of the tooth and a second inner side surface attached to the inner side surface of the tooth, when the orthodontic force of the tooth 10 acts in the direction from outside to inside, the first inner side surface needs to exert the orthodontic force on the tooth socket, the convex rib 31 is arranged on the first inner side surface, when the orthodontic force of the tooth 10 acts in the direction from inside to outside, the second inner side surface needs to exert the orthodontic force on the tooth socket, and the convex rib 31 is arranged on the second inner side surface.

In one embodiment of the present invention, mouthpiece 30 includes a first inner side facing the outer side of tooth 10 and a second inner side facing the inner side of tooth 10; when the protruding rib 31 is vertical, the protruding rib 31 is disposed on the first inner side surface and the second inner side surface of the mouthpiece 30, and the corresponding protruding rib 31 on the first inner side surface and the second inner side surface is connected.

In this embodiment, the protruding rib 31 is long strip-shaped, and the protruding rib 31 on the first inner side surface and the second inner side surface is an integral structure, if the first inner side surface of the tooth socket 30 is the side which needs to apply the correction force, the part of the protruding rib 31 on the second inner side surface can form a certain traction effect on the part of the first inner side surface, the protruding rib 31 on the first inner side surface has a reinforcing effect, so that the tooth socket can better keep the initial correction force, and the correction effect of the tooth socket is improved.

In this embodiment, the ribs on the mouthpiece 30 may be disposed corresponding to the positions of the teeth to be corrected, and may also be disposed corresponding to the positions of all the teeth.

In one embodiment of the present invention, as shown in fig. 4, in the first embodiment, the outer profile of the protruding rib 31 has a V-shape. When the mouthpiece 30 with the V-shaped ribs 31 is worn, the tips of the ribs 31 contact with teeth, and the V-shaped ribs 31 can provide the mouthpiece 30 with a lasting stress retention force, so that more than 90% of the initial stress of the mouthpiece 30 can be maintained in the orthodontic period, thereby ensuring the orthodontic effect in the entire orthodontic period.

In the second embodiment, as shown in fig. 5, the outer contour of the protruding rib 31 has an inverted trapezoidal shape.

In the third embodiment, as shown in fig. 6, the outer contour of the convex rib 31 is semicircular.

In one embodiment of the present invention, the thickness of the rib 31 (i.e., the distance from the top end to the bottom end of the rib 31) is 5% to 60% of the thickness of the portion of the mouthpiece 30 where the rib 31 is not provided, and the width of the rib 31 is 0.5 to 3 times the thickness of the rib 31.

Preferably, the thickness of the rib 31 is selected to be 30% of the thickness of the portion of the mouthpiece 30 where the rib 31 is not provided, and the width of the rib 31 is selected to be equal to the thickness of the rib.

In a specific embodiment of the present invention, the dental mouthpiece 30 of the present invention is manufactured by a film and a dental model, and as shown in fig. 2 and 3, the dental model 20 corresponding to the correction scheme is manufactured, grooves are formed on the dental model 20 corresponding to the portions where the ribs are to be formed, the dental mouthpiece 30 is manufactured by a vacuum forming process through the film and the dental model 20 having the grooves, and the ribs are formed on the obtained dental mouthpiece 30 corresponding to the grooves.

Preferably, when the tooth socket is manufactured by using a vacuum plastic suction process, the tooth jaw model is placed in the mold, the membrane is heated, after being melted, the membrane is buckled on the tooth jaw model, the mold is closed, the mold is vacuumized, the melted membrane is tightly adsorbed on the tooth jaw model, the tooth socket is manufactured after cooling, and at the moment, the convex ribs are formed on the part, corresponding to the grooves, of the inner surface of the tooth socket.

Further, when preparing the dental model 20, the three-dimensional scanner may be used to scan teeth to obtain a three-dimensional model, the three-dimensional model may be adjusted according to the orthodontic plan, the three-dimensional model may be provided with grooves correspondingly, and the 3D printer may be used to print the dental model 20, so that the grooves are formed on the surface of the dental model 20 formed by 3D printing.

In another preferred embodiment, the dental model 20 is prepared from an impression and plaster. After the dental model 20 is obtained, the surface of the dental model 20 is cut to form a groove.

As shown in fig. 12, which shows the test data of the stress retention test performed on the creep-resistant shell of the present invention, the stress retention of the creep-resistant shell of the present invention was maintained at 90% or more throughout the entire orthodontic period within the orthodontic period of 10 days of simulated wear, and the orthodontic force to the teeth could be effectively secured, thereby securing the orthodontic effect throughout the orthodontic period.

The creep-resistant tooth socket provided by the invention can realize the maintenance of lasting corrective force due to the convex ribs, and the corrective force can be maintained at more than 90% within the corrective period of teeth due to the small descending amplitude of the corrective force, thereby effectively enhancing the corrective effect.

The arrangement of the convex ribs can enhance the structural strength of the tooth socket, and compared with the tooth socket without the convex ribs, the tooth socket with the convex ribs, which is made of the membrane with the same thickness, provides the correction force which is greater than that of the tooth socket without the convex ribs, so that the creep-resistant tooth socket can be thinner than that of the existing invisible tooth socket under the condition of meeting the correction force requirement due to the arrangement of the convex ribs, and is more comfortable to wear.

On the other hand, the position that sets up of fin can match the orthodontic scheme of tooth to realize accurate medical treatment, correspond the position department that needs the correction at the tooth and set up the fin, the fin can be for the position that needs the correction to exert the power of correcting, realizes carrying out the effect of correcting alone to the position that needs the correction, improves the accurate nature of correction.

The invention also provides a method for manufacturing the creep-resistant tooth socket, which is explained below.

As shown in FIG. 1, the manufacturing method of the creep-resistant tooth socket of the invention comprises the following steps:

executing step S11, preparing a dental model, wherein grooves are arranged on the dental model corresponding to the surfaces of the teeth; then, step S12 is executed;

and S12, providing a membrane, manufacturing the tooth socket through the membrane and the tooth jaw model, and forming convex ribs on the manufactured tooth socket corresponding to the grooves, thereby completing the manufacturing of the tooth socket.

As shown in FIG. 2, the dental model 20 has a dental model 21 corresponding to teeth, the dental model 21 has an inner surface 211 and an outer surface 212, and grooves may be formed on the inner surface 211, the outer surface 212, and both the inner surface 211 and the outer surface 212 of the dental model 21.

Referring to fig. 3, the mouthpiece 30 has an inner side and an outer side, the inner side of the mouthpiece 30 is attached to the teeth, and the ribs are formed on the inner side of the mouthpiece 30, so that the structural strength of the mouthpiece 30 is improved by the ribs, the stress retention of the mouthpiece 30 is enhanced, the mouthpiece 30 can provide initial corrective force to the teeth more durably, and the corrective effect of the teeth is improved.

In an embodiment of the present invention, grooves are formed on the inner surface 211 and the outer surface 212 of all the dental casts 21 of the dental model 20, and when the dental mouthpiece 30 is manufactured by using the film and the dental model 20, ribs are formed on the inner surface of the dental mouthpiece 30 at positions corresponding to all the teeth. When the grooves are formed, a plurality of grooves are formed in each tooth die 21, and the grooves can be arranged at equal intervals, can be arranged at unequal intervals, and can be continuously formed. When the grooves are arranged at equal intervals, the interval between the grooves is 0.01mm to 1.5 mm.

In an embodiment of the present invention, when the dental cast 21 corresponding to the teeth to be corrected is provided with the grooves on the dental model 20 and the dental mouthpiece 30 is manufactured by using the film and the dental model 20, the inner side surface of the dental mouthpiece 30 is formed with the ribs at the positions corresponding to the teeth to be corrected.

In one embodiment of the invention, the direction of the grooves is designed according to the orthodontic plan of the tooth to be straightened:

if the stress position of the tooth to be corrected is concentrated on one point, the groove is scattered on the corresponding dental model by taking the concentrated stress position point as the center.

The arrangement direction of the grooves includes three modes of vertical direction, horizontal direction and oblique direction, specifically, the arrangement direction of the grooves is designed according to the orthodontic scheme of the teeth, when the orthodontic force is applied to the side portion of the teeth 10 to rotate the teeth 10, the arrangement direction of the grooves is horizontal, and the grooves are arranged horizontally on the surface of the dental cast 21. As shown in fig. 7 and 8, the tooth 10 is shown in a top view at an angle to the straightened position shown in phantom, and to achieve straightening of the tooth 10, it is necessary to apply a straightening force F1 urging the tooth outwardly on the inner side of the first end of the tooth 10 and a straightening force F2 urging the tooth inwardly on the outer side of the second end, so that the tooth 10 can be rotated to the straightened position shown in phantom by the straightening forces F1 and F2. At the moment, the arrangement direction of the grooves is transverse, and the convex ribs formed on the manufactured tooth socket are also transverse.

The orthodontic treatment of the tooth 10 may be such that the tooth 10 is rotated either simultaneously inside and outside as shown in fig. 8 or on one side, with the grooves oriented transversely, if necessary.

If the orthodontic scheme of the tooth 10 needs to push the tooth 10 inwards or outwards to be away from one side of the root, the arrangement direction of the groove is vertical, and the convex rib formed on the manufactured tooth socket is vertical.

If the tooth 10 needs to be straightened, the tooth is pushed inward or outward by taking one corner of the tooth 10 as a concentration point of acting force, and the groove is arranged obliquely and is in a scattering shape by taking the concentration point as a center.

In one embodiment of the invention, the grooves are provided on the tooth form corresponding to the surface receiving the corrective force. As shown in fig. 2, when teeth have inner and outer sides and a corrective force is applied to the inner sides of the teeth, grooves are formed on the inner side 211 of the dental mold 21, and ribs are formed on the surface of the thus-obtained dental shell which is in contact with the inner side 211 of the dental mold 21. If a corrective force is to be applied to the outside of the teeth, grooves are formed on the outer side surface 212 of the dental mold 21, and ribs are formed on the surface of the dental shell thus produced which is in contact with the outer side surface 212 of the dental mold 21.

In one embodiment of the invention, when the grooves are vertical, the grooves are arranged on the inner surface and the outer surface of the tooth die, and the corresponding grooves on the inner surface and the outer surface are communicated. Referring to fig. 2, when the grooves are vertically arranged, the grooves are formed on the inner surface 211 and the outer surface 212 of the dental cast 21, and the corresponding grooves on the inner surface 211 and the outer surface 212 are communicated, so that the integrally connected convex ribs are formed on the side surfaces of the dental cast attached to the inner surface 211 and the side surfaces attached to the outer surface 212, and the convex ribs have high integrity and can improve the overall structural strength of the dental cast, thereby enhancing the stress retention of the dental cast and improving the orthodontic effect.

In one embodiment of the invention, the cross-sectional shape of the groove is a V-shape. As shown in connection with fig. 4, the V-shaped ribs are formed by the V-shaped grooves.

In another embodiment, the cross-sectional shape of the groove is an inverted trapezoid, and as shown in fig. 5, the inverted trapezoid rib is formed by the inverted trapezoid groove.

In yet another embodiment, the cross-sectional shape of the groove is a semicircular shape, and as shown in fig. 6, a semicircular rib is formed by the semicircular groove.

In a specific embodiment of the present invention, when preparing the dental model, the three-dimensional scanner may be used to scan teeth to obtain a three-dimensional model, the three-dimensional model may be adjusted according to the orthodontic plan, and the three-dimensional model may be correspondingly provided with grooves, and then the 3D printer may be used to print the dental model 20, such that the surface of the dental model 20 formed by printing has grooves.

In one embodiment of the invention, the dental model is prepared from an impression and plaster. After the dental model 20 is obtained, the surface of the dental model 20 is cut to form a groove.

In one embodiment of the invention, the tooth socket is manufactured by a vacuum forming process through a membrane and a jaw model with grooves, and convex ribs are formed on the obtained tooth socket corresponding to the grooves.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.

Claims

1. A method for making a creep-resistant mouthpiece, comprising the steps of:

2. The method of claim 1, wherein the direction of the grooves is designed according to a dental regimen of correcting the teeth:

3. The method of claim 1 wherein said grooves are provided on said dental cast on a surface that is to receive corrective forces.

4. The method of claim 1, wherein the grooves are formed in the inner and outer surfaces of the dental cast when the grooves are vertical and communicate with the corresponding grooves in the inner and outer surfaces.

5. The method of claim 1, wherein the cross-sectional shape of the groove is a V-shape.

6. The creep-resistant tooth socket is characterized in that convex ribs are arranged on the surface, which is attached to teeth, of the tooth socket.

7. The creep-resistant mouthpiece of claim 6, wherein if the force-receiving positions of the teeth to be corrected are linearly connected, the ribs are disposed in a direction perpendicular to the linearly connected force-receiving positions;

8. The creep-resistant mouthpiece of claim 6 wherein the ribs are positioned to correspond to teeth to be corrected and the ribs are positioned on a surface of the mouthpiece on a side to which a corrective force is applied.

9. The creep-resistant mouthpiece of claim 6 wherein the mouthpiece includes a first inner side facing the outer side of the teeth and a second inner side facing the inner side of the teeth;

10. The creep-resistant mouthpiece of claim 6 wherein the ribs have a V-shaped outer profile.