Tooth appliance with individualized lowering device

Abstract

The invention provides a tooth appliance with an individualized lowering device, which comprises an invisible appliance main body and the individualized lowering device, and the individualized lowering device comprises a gasket arranged in a concave part of the invisible appliance main body for accommodating teeth; the individualized lowering device further comprises an annular correction elastic belt, two grooves used for installing the annular correction elastic belt are formed in the opposite side walls of the invisible correction device body respectively, and the annular correction elastic belt is arranged on columns formed by the two grooves in the opposite side walls in a sleeving mode.

Description

Technical Field

[0001] The present invention belongs to the field of oral orthodontics, and in particular relates to a dental appliance with an individualized depression device, which realizes precise depression of teeth (especially molars) by designing an individualized force application device. Background Art

[0002] Invisible braces are widely used in adult orthodontic treatment because of their invisible beauty and time-saving, especially for the precise depression of molars, which is often inadequate for existing invisible braces. Traditional invisible braces adjust the position of teeth through the spontaneous force of teeth, but for special correction needs that require precise force, especially the depression of molars, the existing technology cannot provide continuous and precise mechanical control, which limits its treatment effect.

[0003] Although some studies have explored the use of additional support devices (such as micro-implants) to achieve precise force control, this method increases the complexity and cost of treatment, and also increases patients' discomfort and reduces treatment compliance. Therefore, how to achieve individualized and precise tooth depression force through existing invisible braces without relying on additional support devices has become a major technical challenge in the current field of orthodontics.

[0004] A study showed that although the invisible braces have good predictability in controlling the distal movement of molars, their effect in the vertical direction is still limited, especially the depression of molars. Therefore, how to improve the vertical control of invisible braces on teeth through innovative design without relying on external support devices has become the key to the current technological development. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an individualized depression device used on a dental appliance and a dental appliance equipped with the individualized depression device in view of the above-mentioned defects in the prior art, and to achieve depression of specific teeth (such as molars) by precise force application based on the individualized downward force application device of the invisible braces. The present invention not only simplifies the correction process and improves the comfort of patients, but also effectively overcomes the problem in the prior art that the molar depression force cannot be accurately controlled.

[0006] According to the present invention, a dental appliance with an individualized depression device is provided, comprising: an invisible appliance body and an individualized depression device, wherein the individualized depression device comprises a gasket arranged in a recessed portion of the invisible appliance body for accommodating teeth.

[0007] Preferably, the spacer is arranged in a position corresponding to the molar of the recessed portion of the invisible aligner body for accommodating the tooth.

[0008] Preferably, the thickness H of the gasket is determined according to the force F0 to be applied using the following formula:

[0009] H=E·A·δ / F0;

[0010] Among them, A is the contact area between the gasket and the tooth, δ is the deformation of the gasket, and E is the elastic modulus of the gasket.

[0011] Preferably, the individualized depression device also includes: an annular corrective elastic band, and two grooves for installing the annular corrective elastic band are respectively formed on the opposite side walls of the invisible braces body, and the annular corrective elastic band is sleeved on the cylinder formed by the two grooves on the opposite side walls.

[0012] Preferably, a vertical scale is formed on the column for marking the annular correction elastic band.

[0013] Preferably, the elongation ΔL of the annular corrective elastic band is determined according to the force F0 to be applied using the formula ΔL=F0 / k; wherein k is the elastic constant of the annular corrective elastic band; and the annular corrective elastic band has a certain length and a certain elastic constant, and the elongation of the annular corrective elastic band of a fixed length at this position and the force applied to the teeth are marked on the scale of the cylinder.

[0014] According to the present invention, there is also provided a dental appliance with an individualized depression device, comprising: an invisible appliance main body and an individualized depression device, wherein the individualized depression device comprises an annular correction elastic band, wherein two grooves for installing the annular correction elastic band are respectively formed on the opposite side walls of the invisible appliance main body, and the annular correction elastic band is sleeved on a column formed by the two grooves on the opposite side walls.

[0015] Preferably, a vertical scale is formed on the column for marking the annular correction elastic band.

[0016] Preferably, the elongation ΔL of the annular orthodontic elastic band is determined according to the force F0 to be applied using the following formula: ΔL=F0 / k; wherein k is the elastic constant of the annular orthodontic elastic band; and the annular orthodontic elastic band has a certain length and a certain elastic constant, and the elongation of the annular orthodontic elastic band of a fixed length at that position and the force applied to the tooth are marked on the scale of the cylinder.

[0017] Preferably, the individualized depression device further comprises a gasket arranged in a recessed portion of the invisible braces body for accommodating teeth; the gasket is arranged in a position corresponding to the molar of the recessed portion of the invisible braces body for accommodating teeth; and the thickness H of the gasket is determined according to the force F0 to be applied using the following formula:

[0018] H=E·A·δ / F0;

[0019] Among them, A is the contact area between the gasket and the tooth, δ is the deformation of the gasket, and E is the elastic modulus of the gasket.

[0020] The present invention provides an individualized downward force-applying device based on an invisible brace appliance. By designing front and rear fixed rubber band mounting points on the basis of the existing invisible brace appliance, the elastic force of the rubber band is used to apply downward force, thereby achieving precise depression of specific teeth (such as molars). The device has a simple structure and is easy to install. It can act on the target teeth efficiently and continuously, solving the problem of lack of effective mechanical control of molar depression in the prior art. In addition, the device does not require additional support devices, and can significantly improve the patient's wearing comfort and treatment compliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] A more complete understanding of the present invention and its attendant advantages and features will be more readily appreciated by reference to the following detailed description taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 The overall structural diagram of a dental appliance with an individualized depression device according to a preferred embodiment of the present invention is schematically shown.

[0023] Figure 2 A pictorial example of a dental appliance with an individualized depression device according to a preferred embodiment of the present invention is schematically shown.

[0024] It should be noted that the drawings are used to illustrate the present invention, rather than to limit the present invention. Note that the drawings showing the structures may not be drawn to scale. In addition, in the drawings, the same or similar elements are marked with the same or similar reference numerals. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 communication 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.

[0028] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] The technical solution of the present invention is based on the existing dental braces (such as invisible braces), and through individualized design at the tooth part where the depression force needs to be applied, two solutions are used to achieve precise depression force on a single tooth. The two solutions of gasket and annular correction elastic force can be used to correct the same tooth or to correct different teeth respectively.

[0030] Specifically, Figure 1 The overall structure of a dental appliance with an individualized depression device according to a preferred embodiment of the present invention is schematically shown. Figure 1 As shown, the dental appliance with an individualized depression device according to a preferred embodiment of the present invention comprises: an invisible appliance body 10 and an individualized depression device, wherein the individualized depression device comprises a gasket 20 arranged in a recessed portion of the invisible appliance body 10 for accommodating teeth.

[0031] Preferably, the spacer 20 is arranged in a position corresponding to the molar of the recessed portion of the invisible aligner body 10 for accommodating the tooth.

[0032] And, according to Hooke's law, the force F exerted by the gasket is calculated by the following formula:

[0033] F=E·A·δ / h

[0034] Where A is the contact area, δ is the deformation of the gasket, h is the thickness of the gasket, and E is the elastic modulus of the gasket. By adjusting the thickness of the gasket, the pressure applied to the target tooth can be adjusted to achieve individualized correction force.

[0035] Conversely, the thickness H of the gasket is determined from the force F0 to be applied using the following formula:

[0036] H=E·A·δ / F0;

[0037] Among them, A is the contact area between the gasket and the tooth, δ is the deformation of the gasket, and E is the elastic modulus of the gasket.

[0038] Add gaskets of different thicknesses to the teeth where the invisible braces need to apply downward force, and use the elasticity and stiffness characteristics of the gaskets to provide downward pressure on the teeth when wearing the braces. The gasket mainly applies downward pressure on the target teeth through its thickness and the elasticity of its material. When the patient wears the braces, the gasket acts as a buffer, and continuously applies a small pressure on the target teeth through compression and elastic rebound. As the thickness of the gasket increases or decreases, the applied force value also changes, thereby controlling the strength of the force during the correction process.

[0039] Preferably, if Figure 1 and Figure 2 As shown, in addition or as an alternative, the individualized depression device may include: an annular corrective elastic band 30, and two grooves 11 for installing the annular corrective elastic band 30 are respectively formed on the opposite side walls of the invisible braces body 10, and the annular corrective elastic band 30 is sleeved on the column 12 formed by the two grooves 11 on the opposite side walls.

[0040] As an elastic body, the rubber band (or correction elastic band) has the property that it can generate elastic force when stretched. By fixing the two ends of the rubber band in the fixing holes of the braces and adjusting the fixing points of the rubber band at different scale holes, the stretching amount of the rubber band and the force applied can be precisely adjusted, thereby achieving downward pressure on the teeth.

[0041] According to the elastic properties of the circular orthodontic elastic band, the force F applied to the teeth is proportional to the elongation ΔL of the rubber band, which conforms to Hooke's law:

[0042] F=k·ΔL

[0043] Wherein, k is the elastic constant of the ring-shaped correction elastic band, and ΔL is the elongation of the ring-shaped correction elastic band. By adjusting the stretching amount of the ring-shaped correction elastic band at different scale positions (i.e., adjusting ΔL), the force applied to the target tooth can be accurately controlled.

[0044] Conversely, the elongation ΔL of the elastic band is determined according to the force F0 to be applied using the following formula:

[0045] ΔL=F0 / k; wherein k is the elastic constant of the annular correction elastic band.

[0046] Preferably, a scale 13 is formed on the column 12 in the vertical direction for marking the annular correction elastic band 30. Specifically, the design of the scale can enable the rubber band to generate different forces at different positions. In each fixing hole, the stretching amount ΔL of the rubber band will vary according to the position of the hole, thereby accurately controlling the force applied to the teeth. By adjusting the fixing position of the rubber band (i.e., selecting different scale positions), the doctor can gradually adjust the applied force according to the patient's treatment progress to ensure the force adaptability during the correction process.

[0047] Preferably, the annular orthodontic elastic band has a certain length and a certain elastic constant, and the elongation of the annular orthodontic elastic band of fixed length at the position and the force applied to the teeth are marked on the scale 13 of the cylinder 12 .

[0048] Thus, the height of the annular correction elastic band can be quickly determined by calculating the force that needs to be applied.

[0049] The grooves with scales are opened on the inner and outer sides of the invisible braces. The grooves are exquisitely designed and the position of the grooves is precisely located according to the teeth that need to apply the depressing force. The scales in the grooves can accurately calibrate the magnitude of the force so that different strengths of depressing force can be achieved by adjusting the connection points of the rubber band or other elastic elements.

[0050] By adjusting the connection position of the correction elastic band in different scale holes, the depressing force applied to the teeth can be precisely controlled. Each scale position corresponds to a different depressing force. The doctor can adjust the fixing point of the rubber band or elastic material according to the patient's treatment progress to ensure the force increases or decreases to achieve the ideal treatment effect.

[0051] The present invention realizes individualized depression force on a single tooth through two different design methods (gasket adjustment method and rubber band adjustment method). These designs ensure the stability and uniformity of force during treatment by precisely controlling the magnitude and application position of the force, thereby achieving an ideal correction effect.

[0052] Moreover, according to treatment needs, gaskets of different thicknesses can be set in different areas of the invisible braces or the positions of the fixing holes of different scales can be adjusted so as to apply forces of different strengths and directions to different teeth. The individualized depression device of the present invention can be used not only in combination with invisible braces, but also in combination with traditional bracket braces to meet more complex correction needs.

[0053] The device of the present invention requires that the material used has excellent elasticity, durability, comfort and biocompatibility to ensure the effect and patient comfort during long-term use.

[0054] As the basic component of the present invention, the invisible brace body is required to have high transparency and comfort, and can effectively fit the teeth to maintain stable transmission of correction force. Commonly used materials include: transparent thermoplastics (such as polyurethane); this material has good transparency and certain elasticity, can fit closely with the teeth, and ensure comfort. Polyurethane material has good wear resistance and toughness, and is suitable for long-term wear of braces.

[0055] The material of the appliance needs to have extremely low irritation to avoid causing oral discomfort or allergic reactions in patients. The gasket is an important component in the present invention, which adjusts the applied depression force by controlling the thickness and elasticity of the gasket. The gasket needs to have biocompatibility, elasticity and rigidity, and durability. Specifically, the gasket material must be non-toxic and non-irritating to the oral environment, and can be well combined with teeth and appliance materials without affecting oral health. Medical grade silicone, thermoplastics (such as polyurethane or polyetherimide) and other materials are usually used. These materials have good biocompatibility and can be in long-term contact with oral tissues without causing allergies or other adverse reactions. Moreover, the gasket needs to have a certain elasticity and rigidity to ensure that when the patient wears the appliance, a stable pressure can be applied to the target teeth. The selected material should have a moderate elastic modulus, which can effectively apply force without being too stiff to cause discomfort. At the same time, the gasket needs to have high durability, can maintain a stable shape and function during long-term wear, and will not degrade due to repeated use or temperature changes. Therefore, preferably, the gasket is made of a flexible material with biocompatibility (such as silicone, thermoplastics, etc.) to ensure fit with the teeth and the orthodontic appliance while avoiding irritation to other tissues in the oral cavity.

[0056] The correction elastic band (rubber band) is one of the core materials for achieving controllable compression force in the present invention. It needs to have elasticity and adjustability, fatigue resistance and biocompatibility. Specifically, the correction elastic band needs to have a higher elastic modulus in order to generate an appropriate tensile force, and its elastic constant should be adjustable so that forces of different strengths can be achieved by changing the length of the rubber band. Common materials include medical rubber or thermoplastic elastomers, which can maintain good elastic recovery when stretched. Moreover, since the rubber band will be repeatedly stretched and recovered during long-term wear, its fatigue resistance is extremely important. The selected material should be able to maintain elasticity without aging or breaking during long-term use. In addition, the correction elastic band material should be non-irritating to the environment in the oral cavity and will not have a negative impact on teeth or gums. The medical rubber or synthetic elastic material used should meet the biocompatibility standards of medical devices.

[0057] The present invention embeds gaskets of different thicknesses in the tooth area (such as molars) where the depression force needs to be applied. These gaskets can provide different heights and stiffnesses according to the different needs of the teeth. The purpose is to accurately control the depression force applied to the teeth by adjusting the thickness of the gaskets. By selecting a gasket of appropriate thickness, the patient can apply an appropriate downward force to the target tooth when wearing the braces. The thickness of the gasket is designed to be adjustable, and the user can gradually increase or decrease the thickness of the gasket according to the treatment process, thereby achieving continuous and gradual tooth depression.

[0058] The present invention can accurately control the correction force of a single tooth, avoid excessive dispersion or uneven force, and provide better correction effect. In addition, by adjusting the connection position of the rubber band or elastic material, the treatment process can be adjusted at any time to meet the correction needs of different patients and different teeth.

[0059] The present invention provides an individualized downward force-applying device based on an invisible brace appliance. By designing front and rear fixed rubber band mounting points on the basis of the existing invisible brace appliance, the elastic force of the rubber band is used to apply downward force, thereby achieving precise depression of specific teeth (such as molars). The device has a simple structure and is easy to install. It can act on the target teeth efficiently and continuously, solving the problem of lack of effective mechanical control of molar depression in the prior art. In addition, the device does not require additional support devices, and can significantly improve the patient's wearing comfort and treatment compliance.

[0060] In addition, it should be noted that, unless otherwise specified, the terms "first", "second", "third", etc. in the specification are only used to distinguish the various components, elements, steps, etc. in the specification, and are not used to indicate the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0061] It is to be understood that, although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A dental appliance with an individualized depression device, characterized in that include: A clear brace body and a personalized depression device, wherein the personalized depression device includes a gasket arranged in a recessed portion of the clear brace body for accommodating teeth.

2. The dental appliance according to claim 1, characterized in that: The spacer is arranged in a position corresponding to the molar of the recessed portion of the invisible aligner body for accommodating the tooth.

3. The dental appliance according to claim 1 or 2, characterized in that: Determine the thickness H of the gasket based on the force F0 to be applied using the following formula: H=E·A·δ / F0; Among them, A is the contact area between the gasket and the tooth, δ is the deformation of the gasket, and E is the elastic modulus of the gasket.

4. The dental appliance according to claim 1 or 2, characterized in that: The individualized depression device also includes: an annular correction elastic band, and two grooves for installing the annular correction elastic band are respectively formed on the opposite side walls of the invisible orthodontic appliance body, and the annular correction elastic band is sleeved on the column formed by the two grooves on the opposite side walls.

5. The dental appliance according to claim 4, characterized in that: A vertical scale is formed on the column for marking the annular correction elastic band.

6. The dental appliance according to claim 5, characterized in that: The elongation ΔL of the annular correction elastic band is determined according to the force F0 to be applied using the formula ΔL=F0 / k; Wherein k is the elastic constant of the ring-shaped orthodontic elastic band; and the ring-shaped orthodontic elastic band has a certain length and a certain elastic constant, and the elongation of the fixed-length ring-shaped orthodontic elastic band at that position and the force applied to the tooth are marked on the scale of the cylinder.

7. A dental appliance with an individualized depression device, characterized in that include: An invisible brace body and an individualized depression device, wherein the individualized depression device includes an annular correction elastic band, wherein two grooves for installing the annular correction elastic band are respectively formed on the opposite side walls of the invisible brace body, and the annular correction elastic band is sleeved on a column formed by the two grooves on the opposite side walls.

8. The dental appliance according to claim 7, characterized in that: A vertical scale is formed on the column for marking the annular correction elastic band.

9. The dental appliance according to claim 8, characterized in that: The elongation ΔL of the annular orthodontic elastic band is determined according to the force F0 to be applied using the following formula: ΔL=F0 / k; wherein k is the elastic constant of the annular orthodontic elastic band; and the annular orthodontic elastic band has a certain length and a certain elastic constant, and the elongation of the annular orthodontic elastic band of a fixed length at that position and the force applied to the teeth are marked on the scale of the cylinder.

10. The dental appliance according to claim 7 or 8, characterized in that: The personalized depression device also includes a spacer disposed in a recessed portion of the clear aligner body for receiving a tooth; The spacer is arranged in a position corresponding to the molar of the recessed portion of the invisible orthodontic appliance body for accommodating the tooth; and the thickness H of the spacer is determined according to the force F0 to be applied using the following formula: H=E·A·δ / F0; Among them, A is the contact area between the gasket and the tooth, δ is the deformation of the gasket, and E is the elastic modulus of the gasket.

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