Orthodontic appliance system and staged hybrid orthodontic method

Abstract

To provide a dental brace system.SOLUTION: A dental brace system for staged hybrid correction of teeth, comprising: a tooth position correction mouthpiece unit for fitting over an initial tooth arrangement to obtain a corrected tooth arrangement; an interdental space closure mouthpiece unit for securing to the corrected tooth arrangement to obtain an interdental space closure tooth arrangement; and a tooth arrangement and occlusion stabilization mouthpiece unit for fitting over the interdental space closure tooth arrangement to obtain a stabilized tooth arrangement. In this way, the dental appliance system of the present invention may improve the alignment of the user's teeth and the closure of the interdental space.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an orthodontic system and method, and more particularly to a tooth orthodontic brace system and a step-by-step hybrid tooth orthodontic method. [Background technology]

[0002] Malocclusion affects chewing function and oral health, and over the long term can cause deformities in the facial contours and affect aesthetics. For this reason, many people undergo orthodontic treatment to improve the alignment of their teeth and the appearance of their oral health and facial contours.

[0003] Generally, patients may choose one of two orthodontic treatment methods: traditional metal braces and transparent orthodontic braces. Traditional metal braces use a single wire seat fixed to a single tooth, with a wire passing through the single wire seat to connect multiple wire seats on multiple teeth. Tightening the wire generates traction, pulling the teeth to the corrected position. However, traditional metal braces require a complicated installation process, easily scratch the patient's mouth, are uncomfortable to wear, and lack aesthetic appeal. Transparent orthodontic braces have a transparent case, are fitted over the affected dentition, and the elastic material of the transparent orthodontic brace generates traction, pulling the teeth to the corrected position. While the comfort and aesthetics of transparent orthodontic braces are superior to traditional metal braces, they are only suitable for fine adjustments, and their orthodontic effect is poor for patients with severe malocclusion or gap closure issues after tooth extraction.

[0004] The development of a highly applicable and aesthetically pleasing orthodontic method that can be used by patients with severe malalignment or extraction space closure problems, that is comfortable to use and aesthetically pleasing, that can improve the efficiency of orthodontic treatment, and that can shorten the time required for orthodontic treatment has been a major goal that the industry has striven for. Summary of the Invention [Problem to be solved by the invention]

[0005] The objective of the present invention is to provide a dental orthodontic appliance system and a gradual hybrid dental orthodontic method, in which a tooth position correcting mouthpiece unit, an interdental space closing mouthpiece unit, and a dentition and occlusion stabilizing mouthpiece unit in the dental orthodontic appliance system are respectively used in different stages of the gradual hybrid dental orthodontic method, so that the gradual hybrid dental orthodontic method of the present invention has high applicability, high efficiency, and aesthetics, and can improve the alignment of the user's teeth or correct the problem of closing extraction spaces, and is comfortable to use and aesthetically pleasing to use. [Means for solving the problem]

[0006] According to one aspect of the present invention, there is provided an orthodontic device system for correcting teeth in a stepwise hybrid manner, the orthodontic device system comprising: a tooth position correcting mouthpiece unit that is used to be fitted onto an initial dentition to obtain a corrected dentition and is made of a thermoplastic polymer and corresponds to the initial dentition; an interdental space closing mouthpiece unit that is used to be fixed to the corrected dentition to obtain an interdental space closing dentition and includes a first metal mouthpiece and two second metal mouthpieces, each of which includes a first end, a spring structure, and a second end, one of the first ends being connected to one end of the first metal mouthpiece, the other first end being connected to the other end of the first metal mouthpiece, and each of the second ends being connected to one end of each of the second metal mouthpieces; and a dentition and occlusion stabilizing mouthpiece unit that is used to be fitted onto the interdental space closing dentition to obtain a stabilized dentition and is made of a thermoplastic polymer and corresponds to the interdental space closing dentition.

[0007] According to the orthodontic appliance system described in the previous paragraph, the first metal mouthpiece may include two fixing tubes, and a first end of each closure member may be fixed to one of the two fixing tubes, and each second metal mouthpiece may further include a tubular structure, and a second end of each closure member may be inserted into the tubular structure of one of the second metal mouthpieces.

[0008] According to the orthodontic brace system described in the previous paragraph, each tubular structure may have an inner diameter of 1.0 mm to 2.0 mm.

[0009] According to the orthodontic brace system described in the previous paragraph, the first end of each closure member may be inserted into one of the fixing tubes, each of which may have an inner diameter of 1.0 mm to 2.0 mm.

[0010] According to the orthodontic bracket system described in the previous paragraph, the second end of each closure member has a valley fold angle that may be between 20 degrees and 100 degrees.

[0011] According to the orthodontic brace system described in the previous paragraph, each second metal mouthpiece may include at least two protrusions.

[0012] According to the orthodontic brace system described in the previous paragraph, the spring structure of each closure member may be a torsion spring, the wire diameter of which may be between 0.35 mm and 0.9 mm.

[0013] According to the orthodontic brace system described in the previous paragraph, the spring structure of each closure member may be a tension spring, the wire diameter of which may be between 0.35 mm and 0.9 mm.

[0014] According to the orthodontic brace system described in the previous paragraph, the first metal mouthpiece may be manufactured with a model molding device, which may be a 3D printer or a computer numerically controlled tooling device.

[0015] According to the orthodontic brace system described in the previous paragraph, the material of each closure member may include titanium, nickel, cobalt, chromium, or a combination thereof.

[0016] According to the tooth orthodontic system described in the previous paragraph, the thickness of the tooth position correcting mouthpiece unit may be 0.4mm to 1.1mm, and the thickness of the dentition and bite stabilizing mouthpiece unit may be 0.4mm to 1.1mm.

[0017] According to another aspect of the present invention, there is provided a stepwise hybrid orthodontic method including the steps of: providing an orthodontic appliance system; fitting a tooth position correcting mouthpiece unit to an initial dentition of a dental arch and adjusting the arrangement shape of the initial dentition to obtain a corrected dentition; fixing an interdental space closing mouthpiece unit to the corrected dentition and adjusting the arrangement shape of the corrected dentition to obtain a interdental space closing dentition; and fitting a tooth arrangement and bite stabilizing mouthpiece unit to the interdental space closing dentition and adjusting the arrangement shape of the interdental space closing dentition to obtain a stabilized dentition.

[0018] According to the gradual hybrid orthodontic method described in the previous paragraph, a first metal mouthpiece may be bonded to the lingual sides of the anterior teeth of the dental arch with an adhesive material, and two second metal mouthpieces may be secured to the posterior teeth of the dental arch.

[0019] According to the gradual hybrid tooth straightening method described in the previous paragraph, the adhesive material may be a light-curing adhesive or a dual liquid adhesive. [Brief explanation of the drawings]

[0020] To make the above and other objects, features, advantages and embodiments of the present invention more clearly and comprehensibly, the description of the drawings is as follows. [Figure 1] 1 is a structural schematic diagram of a tooth position correcting mouthpiece unit of a tooth orthodontic system according to one embodiment of the present invention. FIG. [Figure 2] 1 is a structural schematic diagram of an interdental space closing mouthpiece unit of an embodiment of a dental orthodontic system according to an aspect of the present invention. FIG. [Figure 3] 3 is a schematic diagram showing the use of the interdental space closing mouthpiece unit in the orthodontic appliance system of FIG. 2. [Figure 4] 1 is a structural schematic diagram of a dentition and bite stabilization mouthpiece unit of an orthodontic appliance system according to one embodiment of the present invention. FIG. [Figure 5] FIG. 10 is a structural schematic diagram of an interdental space closing mouthpiece unit of another embodiment of a dental orthodontic system according to an aspect of the present invention. [Figure 6]1 is a process flow chart of a step-by-step hybrid tooth straightening method according to another aspect of the present invention. [Figure 7] FIG. 7 is a schematic diagram showing the use of the tooth position correcting mouthpiece unit in the step-by-step hybrid tooth correction method of FIG. 6. [Figure 8] FIG. 7 is a schematic diagram illustrating the use of the interdental space closing mouthpiece unit in the step-by-step hybrid orthodontic method of FIG. 6. [Figure 9] FIG. 7 is a schematic diagram showing the use of a dentition and bite stabilization mouthpiece unit in the step-by-step hybrid orthodontic method of FIG. 6. [Figure 10A] FIG. 2 is an external view of the initial dentition of a user of the first embodiment. [Figure 10B] FIG. 2 is an external view of the stabilized dentition of a user of the first embodiment. [Figure 11A] FIG. 10 is an external view of the initial dentition of a user of Comparative Example 1. [Figure 11B] FIG. 10 is an external view of the stabilized dentition of a user of Comparative Example 1. [Figure 12A] FIG. 10 is a 3D digitally scanned image of the initial dentition of a user of Example 2 after tooth extraction. [Figure 12B] FIG. 10 is a 3D digitally scanned image of the stabilized dentition of a user of Example 2. [Figure 13A] FIG. 10 is a 3D digitally scanned image of the initial dentition of a user of Comparative Example 2 after tooth extraction. [Figure 13B] FIG. 10 is a 3D digitally scanned image of the stabilized dentition of a user of Comparative Example 2. DETAILED DESCRIPTION OF THE INVENTION

[0021] The following specific examples are intended to enable those skilled in the art to fully utilize and practice the present invention without undue interpretation, and these examples should not be construed as limiting the scope of the invention, but are intended to illustrate materials and methods for practicing the invention.

[0022] <Orthodontic appliance system> Please refer to Figures 1, 2, 3, and 4. Figure 1 is a structural schematic diagram of a tooth position correcting mouthpiece unit 110 of a dental orthodontic system according to one embodiment of the present invention, Figure 2 is a structural schematic diagram of an interdental space closing mouthpiece unit 120 of one embodiment of a dental orthodontic system according to one embodiment of the present invention, Figure 3 is a schematic diagram of use of the interdental space closing mouthpiece unit 120 in the dental orthodontic system of Figure 2, and Figure 4 is a structural schematic diagram of a dentition and occlusion stabilizing mouthpiece unit 130 of a dental orthodontic system according to one embodiment of the present invention. The dental orthodontic system is used for correcting teeth in a stepwise hybrid manner, and includes the tooth position correcting mouthpiece unit 110, the interdental space closing mouthpiece unit 120, and the dentition and occlusion stabilizing mouthpiece unit 130.

[0023] The tooth position correcting mouthpiece unit 110 is fitted onto an initial dentition to obtain a corrected dentition, and is made of a material including a thermoplastic polymer corresponding to the initial dentition. Specifically, to manufacture the tooth position correcting mouthpiece unit 110, digital data of the initial dentition including the shape of the initial dentition of the user is first obtained, a tooth position corrected dental impression is made based on the initial dentition digital data, and the tooth position correcting mouthpiece unit 110 is manufactured based on the tooth position corrected dental impression. The thickness of the tooth position correcting mouthpiece unit 110 may be 0.4 mm to 1.1 mm, which allows the tooth position correcting mouthpiece unit 110 to maintain a constant elastic force without being deformed by the reaction force of the teeth and to gently and gradually correct the positions of the teeth in the dentition, thereby avoiding pain in the user's dentition and an impact on wearing comfort due to the application of uneven force. Furthermore, in consideration of ease of processing, the material of the tooth position correction mouthpiece unit 110 may be selected from thermoplastic polymers, and at the same time, in order to ensure safety in use, materials that are chemically stable and biocompatible, such as polyethylene terephthalate glycol (PETG), thermoplastic polyurethane (TPU), polypropylene (PP), polycarbonate (PC), and ethylene vinyl acetate (EVA), may be selected.

[0024] The interdental space closing mouthpiece unit 120 is used to be fixed to a corrected dentition to obtain an interdental space closing dentition, and includes a first metal mouthpiece 121, two second metal mouthpieces 123, and two closing members 125, each of which includes a first end 126, a spring structure 127, and a second end 128, the first end 126 of one of the closing members 125 being connected to one end of the first metal mouthpiece 121, the first end 126 of the other closing member 125 being connected to the other end of the first metal mouthpiece 121, and the second end 128 of each closing member 125 being connected to one end of each of the second metal mouthpieces 123. Furthermore, each of the second metal mouthpieces 123 may be a closed metal ring, and the thickness of each of the second metal mouthpieces 123 may be 0.5 mm to 3 mm, preferably 1 mm to 3 mm, which can improve the structural stability of the second metal mouthpieces 123. In detail, to manufacture the interdental space closing mouthpiece unit 120, corrected digital data for the user's corrected dentition, including the arrangement shape of the user's corrected dentition, is first obtained. An interdental space closing dental mold is manufactured based on the corrected digital data for the dentition. The interdental space closing mouthpiece unit 120 is then manufactured based on the interdental space closing dental mold. The connection method between the closure member 125 and the first and second metal mouthpieces 121 and 123 in the interdental space closing mouthpiece unit 120 provides a traction force from the outside to the inside. As a result, the position of the teeth is simultaneously influenced by the traction force from the inside to the outside and the traction force from the outside to the inside, achieving a balance of the traction forces. Compared to a single inward-tightening traction force or a single outward-tightening traction force, the interdental space closing mouthpiece unit 120 avoids the risk of inward collapse or outward distortion of the dentition, allows for rapid adjustment of the dentition shape, and simultaneously achieves a balance in the direction of tooth movement.

[0025] The first metal mouthpiece 121 may include two fixing tubes 122, and the first end 126 of each closing member 125 may be fixed to one of the fixing tubes 122. Each second metal mouthpiece 123 may further include a tubular structure 124, and the second end 128 of each closing member 125 may extend through the tubular structure 124 of one of the second metal mouthpieces 123. Each tubular structure 124 may have an inner diameter of 1.0 mm to 2.0 mm. The first end 126 of each closing member 125 may extend through one of the fixing tubes 122, which may have an inner diameter of 1.0 mm to 2.0 mm. The first end 126 of each closing member 125 may be fixed to one of the fixing tubes 122, and the fixing method may be adhesive or locking. This makes it possible to strengthen the connection between the closure member 125 and the first metal mouthpiece 121, and is also advantageous for installing mechanisms. Note that the second end 128 of the closure member 125 is inserted through the tubular structure 124 of the second metal mouthpiece 123, which is also advantageous for installing mechanisms.

[0026] The second end 128 of each closure member 125 has a valley fold angle that may be between 20 and 100 degrees, which can improve the stability of the mechanical connection. Preferably, the valley fold angle may be between 30 and 90 degrees, which can provide a stable traction force, improve the stability of the anchor control position during space closure, and allow stable movement of the anterior and posterior teeth of the dental arch T.

[0027] The spring structure 127 of each closure member 125 may be a torsion spring having a wire diameter of 0.35 mm to 0.9 mm. A torsion spring, also known as a torsion coil spring, is an elastic article that stores mechanical energy and is generally manufactured by winding a wire. A torsion spring has a simple structure and does not create blind spots when cleaning the interdental space closing mouthpiece unit 120 while wearing it. When the torsion spring has a wire diameter of 0.35 mm to 0.9 mm, it has excellent mechanical strength, can resist reaction forces generated during tooth movement, and can maintain the stability of the spring force.

[0028] The first metal mouthpiece 121 may be manufactured with a model forming device, which may be a 3D printer or a computer numerical control (CNC) tooling device, so that it can correspond to the lingual surface shape and fit and secure to the lingual surface.

[0029] The material of each closure member 125 may include titanium, nickel, cobalt, chromium, or a combination thereof, which allows the closure member 125 to have stable elasticity and reduce the risk of allergies to the user.

[0030] Each second metal mouthpiece 123 may include at least two protrusions 129. As shown in Fig. 3 , the interdental space closing mouthpiece units 120 are fixed to the corrected dentition of the user's upper dental arch T and the corrected dentition of the user's lower dental arch T, respectively, and one end of the elastic element P is detachably connected to one of the protrusions 129 of one of the second metal mouthpieces 123, and the other end is detachably connected to one of the protrusions 129 of the other second metal mouthpiece 123, thereby providing additional traction force to adjust the shape of the dentition and improving the correction efficiency of the interdental space closing mouthpiece units 120.

[0031] The dentition and occlusion stabilization mouthpiece unit 130 is used to fit over a gap-closing dentition to obtain a stabilized dentition, and is made of a material including a thermoplastic polymer dentition and corresponding to the gap-closing dentition. Specifically, to manufacture the dentition and occlusion stabilization mouthpiece unit 130, first, digital data of the gap-closing dentition including the arrangement shape of the user's gap-closing dentition is acquired, a dentition and occlusion stabilization dental mold is manufactured based on the gap-closing dentition digital data, and the dentition and occlusion stabilization mouthpiece unit 130 is manufactured based on the dentition and occlusion stabilization dental mold. The thickness of the dentition and occlusion stabilization mouthpiece unit 130 may be 0.4 mm to 1.1 mm, and thus the dentition and occlusion stabilization mouthpiece unit 130 applies pressure to the gap-closing dentition with its elastic force, thereby changing the arrangement shape of the gap-closing dentition and obtaining the user's stabilized dentition. The elastic force of the dentition and occlusion stabilization mouthpiece unit 130 applies pressure to the interdental space closing dentition, applying force evenly to all teeth in the dental arch T, providing high control over the distance of relative tooth displacement and allowing the teeth to move accurately to the desired position. In addition, in consideration of ease of processing, a thermoplastic polymer may be selected as the material for the dentition and occlusion stabilization mouthpiece unit 130, and at the same time, in order to ensure safety in use, a material having chemical stability and biocompatibility, such as polyethylene terephthalate, thermoplastic polyurethane, polypropylene, polycarbonate, and styrene acetate styrene ester, may be selected.

[0032] Further, please refer to FIG. 5. FIG. 5 is a structural schematic diagram of an interdental space closure mouthpiece unit 220 of another embodiment of an orthodontic appliance system according to one aspect of the present invention. As shown in FIG. 5, each closure member 225 includes a first end 226, a spring structure 227, and a second end 228. The spring structure 227 of each closure member 225 may be a tension spring whose wire diameter may be 0.35 mm to 0.9 mm. This allows the closure member 225 to withstand large loads and maintain its strength for a long period of time without changes in its properties due to changes in time or environment.

[0033] <Step-by-step hybrid orthodontic treatment method> Please refer to Figures 6, 7, 8 and 9. Figure 6 is a process flowchart of a gradual hybrid tooth correction method 300 according to another embodiment of the present invention, Figure 7 is a schematic diagram of using the tooth position correcting mouthpiece unit 110 in the gradual hybrid tooth correction method 300 of Figure 6, Figure 8 is a schematic diagram of using the interdental space closing mouthpiece unit 120 in the gradual hybrid tooth correction method 300 of Figure 6, and Figure 9 is a schematic diagram of using the dentition and bite stabilizing mouthpiece unit 130 in the gradual hybrid tooth correction method 300 of Figure 6. The gradual hybrid tooth correction method 300 includes steps 301, 302, 303 and 304.

[0034] Step 301 is to provide an orthodontic system including a tooth position correcting mouthpiece unit 110, a space closing mouthpiece unit 120, and a dentition and bite stabilizing mouthpiece unit .

[0035] Step 302 involves fitting the tooth position correction mouthpiece unit 110 to the initial dentition of dental arch T and adjusting the initial dentition configuration to obtain the corrected dentition. Specifically, the tooth position correction mouthpiece unit 110 corresponds to the initial dentition. The tooth position correction mouthpiece unit 110 is fitted to the initial dentition of dental arch T for the tooth position correction execution time. The tooth position correction mouthpiece unit 110 exerts elastic pressure on the initial dentition, thereby changing the initial dentition configuration to obtain the corrected dentition. During the tooth position correction execution time, the tooth movement speed is controlled to move 0.15 mm to 0.35 mm per month. As shown in FIG. 7 , fitting the tooth position correction mouthpiece unit 110 to the initial dentition of dental arch T allows for even application of force to the teeth, achieving comprehensive tooth position correction and accurately adjusting the symmetry of the tooth alignment. The left and right dentition of the initial dentition are adjusted to be mirror images of each other with the axis of dental arch T as the center line of symmetry.

[0036] Step 303 involves fixing the interdental space closing mouthpiece unit 120 to the corrected dentition and adjusting the arrangement of the corrected dentition to obtain the interdental space closing dentition. Specifically, the interdental space closing mouthpiece unit 120 is fixed to the corrected dentition and the interdental space closing is performed for the interdental space closing execution time to obtain the interdental space closing dentition. During the interdental space closing execution time, the tooth movement speed is controlled to move 0.5 mm to 1.5 mm per month. The first metal mouthpiece 121 may be bonded to the lingual side of the anterior teeth of the dental arch T with an adhesive material, and the two second metal mouthpieces 123 may be fixed to the posterior teeth of the dental arch T. Furthermore, the two second metal mouthpieces 123 may be ring-shaped and fitted to the user's posterior teeth. To strengthen the fixation reliability of the second metal mouthpiece 123 on the posterior teeth, the second metal mouthpiece 123 may be bonded to the posterior teeth with an adhesive material, which may be, for example, a light-curing adhesive or a dual liquid adhesive, thereby improving the efficiency of adhesive curing and providing ease of operation. Before the first metal mouthpiece 121 is placed on the lingual sides of the anterior teeth of the dental arch T, the lingual sides of the anterior teeth of the dental arch T may be subjected to surface treatment, which may be etching or sandblasting. Before the second metal mouthpiece 123 is fixed to the posterior teeth of the dental arch T, the posterior teeth of the dental arch T may be subjected to surface treatment, which may be etching or sandblasting. This can make the first metal mouthpiece 121 or the second metal mouthpiece 123 stronger, further improving the reliability of the second-stage orthodontic treatment.

[0037] Step 304 involves fitting the dentition and occlusion stabilization mouthpiece unit 130 to the interdental space-closing dentition and adjusting the arrangement of the interdental space-closing dentition to obtain a stabilized dentition. Specifically, the dentition and occlusion stabilization mouthpiece unit 130 is fitted to the interdental space-closing dentition, and the dentition and occlusion stabilization is performed for the dentition and occlusion stabilization execution time. As shown in FIG. 9, the dentition and occlusion stabilization mouthpiece unit 130 applies an elastic force to the interdental space-closing dentition, displacing the teeth to the desired positions, thereby obtaining a stabilized dentition. During the dentition and occlusion stabilization execution time, the tooth movement rate is controlled to move 0.15 mm to 1.50 mm per month.

[0038] <Arrangement of stabilized teeth> In order to prove that the orthodontic appliance system and the step-by-step hybrid orthodontic method of the present invention can improve the alignment of users' teeth or correct the problem of tooth extraction space closure, the users in Examples 1 and 2 used the orthodontic appliance system of the present invention and underwent orthodontic treatment using the step-by-step hybrid orthodontic method, while the users in Comparative Examples 1 and 2 used a transparent mouthpiece orthodontic appliance and underwent orthodontic treatment using a single step-by-step orthodontic method.

[0039] Please refer to Figures 10A, 10B, 11A, and 11B. Figure 10A is an external view of the initial dentition of the user of Example 1, Figure 10B is an external view of the stabilized dentition of the user of Example 1, Figure 11A is an external view of the initial dentition of the user of Comparative Example 1, and Figure 11B is an external view of the stabilized dentition of the user of Comparative Example 1. All of the above external views are displayed in photographic form. As can be seen from Figures 11A and 11B, before orthodontic treatment, the initial dentition of the user of Comparative Example 1 is tilted outward, and after orthodontic treatment, the stabilized dentition of the user of Comparative Example 1 is contracted inward, but the anterior teeth of the stabilized dentition of Comparative Example 1 have an overbite phenomenon. Because the anterior teeth of the lower dental arch are contracted inward, the occlusal positions of the upper and lower dental arches cannot be matched. Furthermore, the posterior teeth of the stabilized dentition of Comparative Example 1 exhibited an opening phenomenon, with the posterior teeth tilted and the interdental spaces not tightly closed, leaving spaces for movement between the teeth, which was detrimental to maintaining the shape of the stabilized dentition of Comparative Example 1. As can be seen from Figures 10A and 10B, before orthodontic treatment, the teeth in the initial dentition of the user of Example 1 were misaligned and the anterior teeth tilted outward, whereas after orthodontic treatment, the teeth in the stabilized dentition of the user of Example 1 were closely aligned and in contact with each other, limiting the space for tooth movement and contributing to maintaining the shape of the stabilized dentition of Example 1. This proves that the orthodontic appliance system and step-by-step hybrid orthodontic method of the present invention can effectively improve the alignment, shape, and shape stability of the user's stabilized dentition and can resolve the overbite of the anterior teeth and the opening of the posterior teeth in transparent mouthpiece orthodontic appliances.

[0040] Please refer to Figures 12A, 12B, 13A, and 13B. Figure 12A is a 3D digital intraoral scan image of the initial dentition of the user of Example 2 after tooth extraction, Figure 12B is a 3D digital intraoral scan image of the stabilized dentition of the user of Example 2, Figure 13A is a 3D digital intraoral scan image of the initial dentition of the user of Comparative Example 2 after tooth extraction, and Figure 13B is a 3D digital intraoral scan image of the stabilized dentition of the user of Comparative Example 2. As can be seen from Figures 13A and 13B, tooth extraction gaps existed after tooth extraction of the initial dentition of the user of Comparative Example 2, and the interdental gaps in the stabilized dentition of the user of Comparative Example 2 were not tightly closed after correction. There were gaps between the teeth, movement spaces existed between the teeth, and the teeth were tilted lingually or outward. Furthermore, the shape of the stabilized dentition of the user of Comparative Example 2 was easily changed, which may result in a more irregular tooth alignment. 12A and 12B, after tooth extraction in the initial dentition of the user of Example 2, tooth extraction spaces exist, and after correction, the teeth in the stabilized dentition of the user of Example 2 can be closely aligned, with the teeth abutting against each other to limit the space for tooth movement, further improving the stability of tooth alignment in the stabilized dentition of the user of Example 2. This proves that the orthodontic appliance system and gradual hybrid tooth correction method of the present invention can effectively improve the problem of closed tooth extraction spaces.

[0041] As described above, the orthodontic appliance system and the gradual hybrid orthodontic method of the present invention provide a corresponding orthodontic method required for different orthodontic stages of the user, can be used for patients with severe malalignment or extraction space closure problems, corrects the alignment of teeth in a gentle and gradual manner to align the teeth to the target position, and is comfortable to use and aesthetically pleasing.

[0042] Although the present invention has been disclosed in the above embodiments, the above embodiments are not intended to limit the present invention, and anyone skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined based on those defined by the claims attached below. [Explanation of symbols]

[0043] 110: Tooth position correction mouthpiece unit 120, 220: Interdental space closing mouthpiece unit 121: First metal mouthpiece 122: Fixed tube 123: Second metal mouthpiece 124: Tubular structure 125, 225: Closure member 126, 226: 1st end 127, 227: Spring structure 128, 228: 2nd end 129:Protrusion 130: Mouthpiece unit for stabilizing dentition and occlusion 300: Step-by-step hybrid orthodontic treatment method 301, 302, 303, 304: Process T: dental arch P: Elastic element

Claims

1. 1. A dental orthodontic system for stepwise hybrid correction of teeth, comprising: a tooth position correcting mouthpiece unit that is fitted onto the initial dentition to obtain a corrected dentition, the tooth position correcting mouthpiece unit being made of a material including a thermoplastic polymer and corresponding to the initial dentition; an interdental space closing mouthpiece unit that is fixed to the corrected dentition to obtain an interdental space closing dentition, and includes a first metal mouthpiece, two second metal mouthpieces, and two closing members each including a first end, a spring structure, and a second end, one of the first ends being connected to one end of the first metal mouthpiece, the other of the first ends being connected to the other end of the first metal mouthpiece, and each of the second ends being connected to one end of each of the second metal mouthpieces; a teeth and bite stabilization mouthpiece unit that is used to be fitted on the interdental space closing teeth to obtain a stabilized teeth, the material of which includes the thermoplastic polymer, and corresponds to the interdental space closing teeth; A dental orthodontic system comprising:

2. 2. The orthodontic appliance system according to claim 1, wherein the first metal mouthpiece includes two fixing tubes, the first end of each of the closure members is fixed to one of the two fixing tubes, and each of the two second metal mouthpieces further includes a tubular structure, and the second end of each of the two closure members is inserted into the tubular structure of one of the two second metal mouthpieces.

3. 3. The orthodontic system of claim 2, wherein each of the tubular structures has an inner diameter of 1.0 mm to 2.0 mm.

4. 4. The orthodontic system according to claim 3, wherein the first end of each of the two closure members is inserted into one of the two fixing tubes, each having an inner diameter of 1.0 mm to 2.0 mm.

5. 5. The orthodontic system of claim 4, wherein the second end of each of the two closure members has a valley fold angle of between 20 degrees and 100 degrees.

6. The orthodontic system of claim 5 , wherein each of the second metal mouthpieces includes at least two protrusions.

7. 2. The orthodontic appliance system according to claim 1, wherein the spring structure of each of the two closure members is a torsion spring with a wire diameter of 0.35 mm to 0.9 mm.

8. 2. The orthodontic appliance system according to claim 1, wherein the spring structure of each of the two closure members is a tension spring with a wire diameter of 0.35 mm to 0.9 mm.

9. 10. The orthodontic system of claim 1, wherein the first metal mouthpiece is manufactured with a model molding machine that is a 3D printer or a computer numerically controlled tool machine.

10. 10. The orthodontic system of claim 1, wherein the material of each of the two closure members comprises titanium, nickel, cobalt, chromium, or a combination thereof.

11. 2. The orthodontic appliance system according to claim 1, wherein the tooth position correcting mouthpiece unit has a thickness of 0.4 mm to 1.1 mm, and the dentition and bite stabilizing mouthpiece unit has a thickness of 0.4 mm to 1.1 mm.

12. Providing an orthodontic brace system according to claim 1; a step of fitting the tooth position correcting mouthpiece unit to the initial dentition of the dental arch and adjusting the arrangement shape of the initial dentition to obtain a corrected dentition; a step of fixing the interdental space closing mouthpiece unit to the corrected dentition and adjusting the arrangement shape of the corrected dentition to obtain an interdental space closing dentition; a step of fitting the teeth and occlusion stabilization mouthpiece unit to the interdental space closing teeth row and adjusting the arrangement shape of the interdental space closing teeth row to obtain a stabilized teeth row; A step-by-step hybrid tooth orthodontic method comprising:

13. 13. The gradual hybrid dental orthodontic method of claim 12, wherein the first metal mouthpiece is bonded to the lingual sides of the anterior teeth of the dental arch with an adhesive material, and the two second metal mouthpieces are secured to the posterior teeth of the dental arch.

14. 14. The gradual hybrid tooth straightening method of claim 13, wherein the adhesive material is a light-curing adhesive or a dual liquid adhesive.

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