Novel bracket-free invisible appliance

Abstract

The invention relates to the technical field of appliances, in particular to a novel bracket-free invisible appliance. The connecting points and the stay wires are arranged at the gingiva position of the appliance body to form a stable triangular structure, so that bad movement of anterior teeth during tooth extraction and correction of the appliance is effectively avoided, and the stability and correction effect of the appliance are effectively improved. The reinforcing ridges are arranged on the buccal surfaces, the lingual surfaces or the occlusal surfaces of the corresponding teeth, so that the pressure can be effectively enhanced, the elongation force of the appliance and the correction force in other directions are improved, and the control on the teeth is enhanced. The thickening layer is arranged at the edge of the lingual side, so that the correction force of the appliance at the gingival end can be effectively improved, and the root control capability of the appliance is effectively enhanced. A connecting body is arranged at the position corresponding to the cavitation bubble. The orthodontic appliance diaphragms on the tongue side and the lip side are connected through the connector, so that the clamping force of the orthodontic appliance on the tongue side is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of orthodontic appliances, in particular to a novel bracketless invisible orthodontic appliance. Background Art

[0002] Braces are medical devices used to correct tooth alignment and occlusion. With the development of invisible braces technology, bracketless braces are favored by more and more patients due to their beauty, comfort, and easy cleaning and maintenance. However, existing bracketless braces have the following shortcomings:

[0003] 1. Since the elasticity of bracketless invisible braces is different in different parts, the elasticity increases from the incisal end or occlusal surface to the gingival end. When subjected to the same force, the braces close to the gingival part will deform more. When the braces are retracted during extraction, the braces close to the gingival part will deform more than the braces close to the occlusal surface or incisal end, and will bend. Therefore, when the braces are used for extraction and retraction of the anterior teeth, the anterior teeth will be lingually tilted and elongated, and the posterior teeth will be mesially tilted. This is the "roller coaster" effect in dental treatment. It is not conducive to the movement of dental treatment and causes poor tooth movement.

[0004] 2. The most obvious mechanical defect of traditional bracketless invisible braces is that the elongation force they can provide is very weak. The elongation force will pull the teeth towards the braces and make them fit. The weak elongation force will result in the bracketless invisible braces having very weak control over the teeth. The part that can provide this force is the part where the braces enter the undercut area of ​​the teeth. However. The gingival margin of traditional bracketless invisible braces is the position with the lowest strength, and the structure is in the shape of multiple connected arcs, with an overly long edge line, resulting in very weak correction force. The undercut area of ​​the teeth is relatively small and close to the gums, resulting in the smaller correction force that the braces can provide on the gingival side.

[0005] 3. From the occlusal surface or incisal end to the gingival end of the orthodontic appliance, the correction force is sharply weakened, resulting in weaker root control ability of the orthodontic appliance.

[0006] 4. The braces have less grip on the teeth, especially in the posterior area. In cases of tooth extraction, the extracted tooth will form a cavity on the braces, and the cavity position is more likely to deform, causing the braces to further weaken their grip on the teeth.

[0007] 5. Traditional bracketless invisible braces cannot apply force to the adjacent surfaces of missing teeth or exposed tooth gaps, but rely on the buccal and lingual force components to move teeth mesiodistal and mesiodistal, which is inefficient in moving teeth mesiodistal.

[0008] 6: Traditional bracketless invisible braces have excellent elasticity, but they are inefficient when transmitting correction force over long distances. For example, when pushing the molars backwards, the traction hook is located between the canines or the canines and lateral incisors, which is far away from the molars that need to be pushed. When the thrust is transmitted, it will experience various uncertain deformations, which will weaken the correction force and cause the part of the appliance in the middle to deform beyond the design range, resulting in a small amount of movement beyond the design range. Summary of the invention

[0009] In order to overcome these limitations, the present invention proposes a novel bracketless invisible brace appliance. The technical solution provided by the present invention is as follows:

[0010] A novel bracketless invisible brace comprises a brace body, an external connector on the brace body, the external connector is in a strip shape, and two ends of the external connector are respectively connected to different positions on the outer surface of the brace body;

[0011] As an improvement, the external connector is arranged in a recessed space of the buccal and lingual outer surface or the abduction gap.

[0012] As an improvement, when the appliance body is deformed, the external connector is stretched or compressed and provides pulling force and pushing force accordingly.

[0013] When there are gaps between teeth, or when teeth are missing, or when teeth are extracted, or when there are gaps between teeth during correction, space will appear on the inner surface of the appliance and a cavitation position will be formed; the inner surface of the appliance body is provided with an internal connector at the cavitation position, and the internal connector is used to connect two or more different positions in the cavitation, so as to maintain the structural strength of the appliance, reduce the deformation of the appliance, and increase the clamping force of the appliance, and in some cases, provide mesiodistal thrust for tooth movement.

[0014] As an improvement, the inner connector is in the shape of a strip, a surface, a filling body or a mesh.

[0015] As an improvement, the appliance body is provided with a thickened layer at the edge position of the lingual side or the buccal side.

[0016] As an improvement, the appliance body is provided with a reinforcing ridge on the buccal surface, lingual surface or occlusal surface of the corresponding tooth; the reinforcing ridge is provided on the outer surface of the appliance body.

[0017] As an improvement, the reinforcing ridge protrudes from the tooth contour and is designed in a U shape.

[0018] As an improvement, the reinforcing ridge is arranged across the occlusal surface of the tooth.

[0019] The advantages of the present invention are:

[0020] 1. The present invention can effectively prevent the appliance located at the extension gap from stretching and leaving the tooth surface when the part is stretched, and avoid the swing of the most convex point of the gingival margin of the appliance when the part is compressed. When the external connector is arranged in a certain dental arch arc on the outside of the appliance, when the front teeth are retracted, the neck of the front teeth will be subjected to uniform and stable pressure. The pressure at this position can provide the maximum root control torque, effectively avoiding the unfavorable movement of the front teeth during tooth extraction and correction. In the posterior tooth area, the correction force of the gingival end of the appliance will be increased, which also has the effect of improving the root control of the posterior teeth. At the same time, it also avoids the excessive elongation of the wavy edge of the appliance. The occlusal surface of the appliance is a part that is difficult to be stretched. The edge of the appliance and the occlusal surface form a difference in the amount of stretching deformation. The smaller the difference, the smaller the amount of bending of the appliance toward the occlusal surface, thereby reducing the occurrence of the "roller coaster" effect, thereby effectively improving the stability and correction effect of the appliance.

[0021] 2. The present invention is also provided with a reinforcing ridge, which can be set up at the tooth contour position and / or the occlusal surface position on the buccal and lingual sides of the teeth on the braces. The provision of the reinforcing ridge can effectively increase the pressure of the braces on the tooth surface close to the gum area when the braces are deformed, while the correction force close to the occlusal surface will not change significantly, and more pressure will be obtained on the tooth surface close to the gum area. This area is mostly an undercut area, and the pressure here will be more converted into a correction force that can increase the direction of tooth elongation, thereby reducing the situation where the corrected teeth are detached from the braces.

[0022] 3. The present invention provides a thickened layer at the edge position, which can effectively improve the correction force of the appliance at the gingival end and effectively enhance the root control ability of the appliance.

[0023] 4. For the extraction position, missing tooth position or area with obvious tooth gap, the present invention provides an internal connector at the corresponding cavitation position. The connector connects the orthodontic appliance on the lingual side and the labial and buccal side to improve the clamping force of the orthodontic appliance on the buccal and lingual side. When a gap is generated in the teeth during the correction process, the gap can also be used to add an internal connector to increase the control force on the teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a new type of bracketless invisible orthodontic appliance in Example 1.

[0025] Figure 2 This is an enlarged view of the buccal external connector in a new type of bracketless invisible orthodontic appliance in Example 1.

[0026] Figure 3 This is a schematic diagram of a novel bracketless invisible orthodontic appliance in Example 1 in which the buccal external connector directly connects the molars and the front teeth.

[0027] Figure 4This is a schematic diagram of a novel bracketless invisible orthodontic appliance in Example 1, in which the buccal external connector bypasses tooth No. 2 and connects tooth No. 1 and tooth No. 3.

[0028] Figure 5 This is a structural diagram of the lingual external connector in a new type of bracketless invisible orthodontic appliance in Example 1.

[0029] Figure 6 This is a structural diagram of the internal connector in a new type of bracketless invisible orthodontic appliance in Example 1.

[0030] Figure 7 This is a schematic diagram of the structure of a strip-shaped internal connector inside a novel bracketless invisible brace appliance in Example 1.

[0031] Figure 8 This is a structural diagram of a strip-shaped internal connector in a novel bracketless invisible orthodontic appliance in Example 1, viewed from a top view.

[0032] Fig. 9 This is a structural diagram of a planar internal connector in a novel bracketless invisible orthodontic appliance in Example 1, viewed from a top view.

[0033] Fig.10 This is a structural diagram of a novel bracketless invisible orthodontic appliance in Example 1 in which the internal connector is a filling body.

[0034] Fig.11 1. A comparison diagram of a traditional undercut area in a novel bracketless invisible orthodontic appliance in Example 1 (left) and a reinforced ridge in this example (right).

[0035] Indicated in the figure:

[0036] 1- appliance body, 2- external connector, 3- internal connector, 4- thickened layer, 5- undercut area, 6- reinforcing ridge, 61- first reinforcing ridge, 62- second reinforcing ridge. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0041] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Example 1

[0043] The present embodiment discloses a novel bracketless invisible brace, comprising a brace body 1, an external connector 2 is provided on the outside of the brace body 1, and the external connector is in a strip shape, with two ends respectively connected to different positions on the outer surface of the brace body 1.

[0044] There are many ways to set up external connectors, such as Figure 2 As shown, the two ends of the external connector 2 and the edges of the two adjacent teeth of the appliance body 1 form a stable triangular structure.

[0045] The external connector 2 is arranged on the buccal outer surface or the lingual outer surface. When the appliance body 1 is deformed, the external connector 2 is stretched or compressed, and provides corresponding pulling force and pushing force. For example: when the appliance body 1 needs to strengthen the structural strength of the gingival end, it can be arranged near the outer surface and close to the gums, and the two ends are respectively connected to the extension gap part of the outer surface of the appliance body 1 to form a stable triangular structure. When the appliance body is deformed, the stable structure formed by the connector and the extension gap will be close to the tooth surface to exert the correction force. The two adjacent external connectors can also maintain the stability of the appliance in the middle position to avoid mesiodistal swing when subjected to force. Thereby avoiding excessive deformation of the appliance body 1 at the gingival position that is not within the design range and improving the strength of the gingival end.

[0046] like Figure 3 As shown, when there is a need to push the molars backward, an external connector can be directly designed between the front teeth and the molars that need to be pushed, and the front teeth area will be connected to the support, so that the support force can be directly transmitted to the molars through the external connector 2 without the need to be transmitted through multiple teeth and braces.

[0047] like Figure 4 As shown in the figure, tooth No. 2 is the lateral incisor, and its labial surface and that of the second premolar are recessed relative to the labial surface of the adjacent teeth. After the bracketless invisible braces are worn, due to the support of the adjacent teeth, or when the braces are stretched, the braces in the recess will leave the tooth surface, making it unable to play a corrective role. By setting an external connector, tooth No. 1 and tooth No. 3 are connected, bypassing tooth No. 2. The external connector connects the adjacent teeth to counteract this tensile deformation, allowing the braces in the recess to fit closely to the tooth surface, thereby better correcting the teeth in the recess.

[0048] The external connector 2 can also be arranged on the lingual side of the appliance body 1 to improve the mechanical strength of the lingual side structure, for example, Figure 5 As shown, it is arranged in the space of the abduction gap on the lingual side. When arch expansion correction is required, multiple external connectors 2 can also be arranged at corresponding positions to generate thrust to improve the efficiency of arch expansion, and this position can avoid the obstruction of the tongue.

[0049] When there are gaps between teeth, such as large gaps between teeth or gaps between teeth during the correction process; or when teeth are missing, such as when teeth fall out actively or are extracted, space will appear on the inner surface of the appliance body 1 and a cavitation position will be formed. The appliance body at the cavitation position lacks a connection structure, which causes the cavitation position and the position near the cavitation to be easily deformed, resulting in weak correction force. In view of the above problems, an internal connector 3 is provided on the inner surface of the appliance body 1 at the cavitation position. The internal connector 3 is used to connect two or more different positions at the cavitation position to maintain the correction strength of the corresponding positions, reduce the deformation of the appliance, and tighten the buccal and lingual sides of the appliance body 1 to increase the clamping force of the appliance. The connector 3 can contact the adjacent surface of the tooth, so that the correction force can be applied to the adjacent surface of the tooth, and the correction force can be provided when the tooth needs to move in the mesiodistal direction, which is not possible with traditional bracketless invisible braces.

[0050] The inner connector 3 may be in the form of a strip, a surface, a filling body or a mesh. Figure 7 and Figure 8 As shown, the inner connector 3 is strip-shaped, and its two ends are connected to the buccal side, the lingual side or the bottom of the groove respectively. The inner connector 3 has multiple connection positions, and the connection mode can be one-to-one or one-to-many.

[0051] like Fig. 9 and Fig.10 As shown, the inner connector 3 can also be in the form of a surface, with both ends of the surface connected to the inner surface of the appliance body. The inner connector 3 can also be in the form of a filling body, connected to the inner surface of the appliance body in the form of a filling body.

[0052] In this embodiment, the edge of the appliance body 1 on the lingual side or / and the buccal side is provided with a thickening layer 4. The thickening layer 4 can effectively improve the correction force of the appliance body 1 at the gingival end and improve the root control ability of the appliance body 1.

[0053] The appliance body 1 is provided with a reinforcing ridge 6 on the buccal surface, lingual surface or occlusal surface of the corresponding tooth. The pressure on the tooth surface in the undercut area can be effectively increased. The undercut area is the main source of the correction force in the elongation direction of the tooth, thereby increasing the appliance body 1 to provide more elongation force to the tooth.

[0054] The reinforcing ridge 6 is provided on the outer surface of the appliance body 1. Fig. 9As shown, the reinforcing ridge in this example includes a first reinforcing ridge 61 and a second reinforcing ridge 62. The first reinforcing ridge 61 protrudes from the tooth contour position and is designed in a U shape. The second reinforcing ridge 62 is arranged across the occlusal surface of the tooth. The setting of the reinforcing ridge can effectively increase the pressure of the appliance on the tooth surface close to the gingival margin area when it is deformed, so as to obtain more correction force, especially the force correction force in the direction of tooth elongation, thereby improving the correction effect. The reinforcing ridge 6 in this embodiment is a combination of the first reinforcing ridge 61 and the second reinforcing ridge 62. When the first reinforcing ridge 61 and the second reinforcing ridge 62 are combined, they can play a role similar to a clamp. When the first reinforcing ridge 61 is stretched open by the teeth, the deformation of the appliance will be concentrated in the part between the ends of the two reinforcing ridges. The same deformation can generate greater force. In clinical applications, it can also be set individually according to patient needs.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel bracketless invisible brace appliance, comprising a brace appliance body, characterized in that: An external connector is arranged on the outside of the orthodontic appliance body. The external connector is in a strip shape, and two ends of the external connector are respectively connected to different positions on the outer surface of the orthodontic appliance body.

2. A novel bracketless invisible brace appliance according to claim 1, characterized in that: The external connector is arranged on the buccal outer surface or the lingual outer surface.

3. The novel bracketless invisible brace appliance according to claim 2, characterized in that: When the appliance body is deformed, the external connector is stretched or compressed and provides a pulling force or a pushing force accordingly.

4. A new type of bracketless invisible brace appliance, characterized in that: When there are gaps between teeth, or when there are missing teeth, or when there are extracted teeth, spaces will appear on the inner surface of the braces and cavitation sites will form; An inner connector is provided on the inner surface of the appliance body at the cavitation position, and the inner connector is used to connect two or more different positions at the cavitation position.

5. The novel bracketless invisible brace appliance according to claim 4, characterized in that: The inner connecting body is in the shape of strip, surface, filling body or net.

6. A new type of bracketless invisible brace appliance, characterized in that: The appliance body is provided with a thickening layer at the edge position of the lingual side or the buccal side.

7. A new type of bracketless invisible brace appliance, characterized in that: The appliance body is provided with a reinforcement ridge on the buccal surface, lingual surface or occlusal surface of the corresponding tooth; The reinforcing ridge is arranged in the undercut area or on the outer surface of the orthodontic device body.

8. The novel bracketless invisible brace appliance according to claim 7, characterized in that: The reinforcing ridge protrudes from the tooth contour position and is designed in a U shape.

9. A novel bracketless invisible orthodontic appliance according to claim 7 or 8, characterized in that: The reinforcing ridge is disposed across the occlusal surface of the tooth.

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