A modified orthodontic lingual fence

Abstract

This invention belongs to the field of orthodontic technology, specifically relating to a modified orthodontic lingual railing, comprising a pressure-film retention layer, which includes a pressure-film base and a palatal membrane. The palatal membrane is adhered to the inner side of the pressure-film base, and several tongue guards are radially embedded on the palatal membrane. The ends of the tongue guards are curved towards the lingual side, and the angle between the tongue guards and the pressure-film retention layer perpendicular to the lingual side is 45°–60°. This invention reduces irritation to the oral mucosa while ensuring retention force, improving patient comfort and aesthetics.

Description

Technical Field

[0001] This utility model belongs to the field of orthodontic technology, specifically relating to an improved orthodontic lingual fence. Background Technology

[0002] Traditional orthodontic lingual removable fences consist of a fence structure made of bent steel wire and a resin base (such as acrylic resin). The steel wire part forms the main body of the fence, which is used to prevent the tongue from protruding forward, while the resin base covers the surface of the gums and alveolar mucosa to provide retention.

[0003] However, while wire mesh structures offer some support and orthodontic benefits, the rigidity of the wires can create pressure on the oral mucosa, leading to poor patient comfort and potential friction damage during chewing and other oral activities. Although the base material provides some retention, the thickness (usually ≥2mm) and rigidity of resin bases result in a strong foreign body sensation, pressure on the gums, and friction between the base edges and soft tissues, causing pain. Long-term use can lead to ulcers or discomfort, poor comfort, and poor breathability, affecting oral hygiene and impacting the stability and effectiveness of the tongue mesh. Tongue meshes made using this older technology are increasingly unable to meet patients' higher demands for comfort and stable orthodontic results. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes an improved orthodontic lingual railing that, while ensuring retention, reduces irritation to the oral mucosa and improves patient comfort.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: an improved orthodontic lingual fence, comprising a pressure film retention layer, the pressure film retention layer comprising a pressure film base and a palatal membrane, the palatal membrane being adsorbed onto the inner side of the pressure film base, and a plurality of tongue blocks being radially embedded on the palatal membrane, the ends of the tongue blocks being bent toward the lingual side, and the angle between the tongue blocks and the pressure film retention layer in the vertical direction being 45°-60°.

[0006] As a further embodiment of this utility model: the pressure film fixation layer is made of medical-grade transparent polyurethane film with a thickness of 0.3-0.5 mm, and the palatal side film is adsorbed onto the pressure film base by vacuum hot pressing technology.

[0007] As a further embodiment of this utility model: the pressure film retention layer covers the lingual side and palatal side of the maxillary anterior teeth, and the bottom edge of the pressure film retention layer extends 0.5-1 mm below the gingival margin, conforming to the contour of the tooth surface.

[0008] As a further improvement of this utility model: the tongue guard is made of medical stainless steel wire with a diameter of 0.8-1.0 mm. The two ends of the stainless steel wire are embedded in the palatal membrane, and the middle part of the stainless steel wire is bent and protrudes towards the tongue.

[0009] As a further embodiment of this utility model: the stainless steel wire is embedded into the palatal diaphragm by hot pressing, with an embedding depth of 0.2-0.4 mm, and the connection between the palatal diaphragm and the embedded stainless steel wire is polished.

[0010] As a further embodiment of this utility model: one end of the stainless steel wire embedded in the palatal diaphragm is provided with a mechanical locking knot, and the mechanical locking knot is connected between the tongue guards.

[0011] As a further improvement of this utility model, the two ends of the pressure film base are thickened and embedded with retaining wires.

[0012] As a further improvement of this invention, the retaining wire spans the inner and outer sides of the pressure film base to enhance the retaining force of the pressure film base.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The pressure-film retention layer of this utility model is made of transparent pressure-film material, which is physically bonded and fixed to the lingual side of the teeth. The pressure-film retention layer and the tongue guard are formed into an integrated structure by heat pressing, with no relative displacement. This reduces the bonding error between the pressure-film retention layer and the tooth surface, effectively improves the retention stability, reduces the mucosal irritation rate, improves the patient's wearing comfort and aesthetics, and improves cleaning efficiency, reducing the risk to oral hygiene. 2. This utility model effectively improves the retaining force of the tongue stop by setting up a mechanical locking mechanism. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of the improved orthodontic lingual fence of this utility model; Figure 2 This is a schematic diagram of the structure in Embodiment 2 of the improved orthodontic lingual fence of this utility model; In the diagram: 1. Pressure membrane retention layer; 2. Pressure membrane base; 3. Palatal membrane patch; 4. Tongue guard; 5. Mechanical locking; 6. Retention wire. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1

[0017] An improved orthodontic lingual fence includes a pressure film retention layer 1, which includes a pressure film base 2 and a palatal membrane 3. The palatal membrane 3 is attached to the inside of the pressure film base 2. Several tongue guards 4 are radially embedded on the palatal membrane 3. The ends of the tongue guards 4 are bent toward the lingual side. The angle between the tongue guards 4 and the pressure film retention layer 1 in the vertical direction is 45°-60°.

[0018] The pressure-fitting retention layer 1 uses a medical-grade transparent polyurethane membrane with a thickness of 0.3-0.5 mm. It has good elasticity and wear resistance, ensuring sufficient retention strength while maintaining good softness. When it is attached to the retention area of ​​the tongue guard, it can fit tightly with the oral mucosa and disperse the pressure of the tongue guard on the mucosa. The palatal membrane 3 is adsorbed onto the pressure-fitting base 2 through vacuum thermopressing technology. After the palatal membrane is softened at 60-80℃, it is attached to the pressure-fitting base with an accuracy of ±0.1 mm.

[0019] The compression retention layer 1 covers the lingual and palatal sides of the maxillary anterior teeth, with the bottom edge of the compression retention layer 1 extending 0.5-1 mm below the gingival margin, conforming to the tooth surface contour.

[0020] The tongue guard 4 is made of medical-grade stainless steel wire with a diameter of 0.8-1.0 mm. The diameter can be selected according to the size of the patient's mouth and the required orthodontic force. Its surface is polished to reduce friction and irritation to the oral mucosa. The two ends of the stainless steel wire are embedded in the palatal membrane 3, and the middle of the stainless steel wire is bent and protrudes towards the tongue.

[0021] The stainless steel wire is embedded into the palatal diaphragm by hot pressing to a depth of 0.2-0.4 mm. The connection between the palatal diaphragm 3 and the embedded stainless steel wire is polished.

[0022] Example 2

[0023] Based on Example 1, a mechanical locking knot 5 is provided at one end of the stainless steel wire embedded in the palatal diaphragm 3.

[0024] The two ends of the pressure film base 2 are thickened and embedded with retaining wires 6.

[0025] The retaining wire 6 spans the inner and outer sides of the pressure film base 2 to enhance the retaining force of the pressure film base 2.

[0026] The operation process of this utility model is as follows: S1. Mold Making and Design: Scan the patient's oral cavity to obtain a three-dimensional model, and design the edge morphology of the pressure film retention layer and the position of the tongue block; S2, Molding: The palatal membrane is heated to a softened state and then vacuum hot-pressed onto the pressure film base. After cooling, a pressure film retention layer is formed. S3, Tongue stop embedded: The stainless steel wire is bent according to the designed curvature and placed in the predetermined position of the palatal membrane. It is then hot-pressed again (temperature 50-60℃) to embed the stainless steel wire into the palatal membrane. S4. Clinical Wearing: The lingual fence adheres to the teeth through the elastic retention force of the pressure film retention layer, requiring no additional adhesive, and patients can remove and clean it themselves.

[0027] Clinical data show that the lingual lateral fence mucosa irritation rate of this invention has been reduced from 70% to below 10%, the clinical shedding rate has been reduced from 25% to 5%, patient satisfaction has been increased to 95%, and the cleaning time has been shortened to 3 minutes.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modified orthodontic lingual fence, characterized in that: The device includes a pressure-supported retention layer (1), which includes a pressure-supported base (2) and a palatal membrane (3). The palatal membrane (3) is attached to the inside of the pressure-supported base (2). Several tongue guards (4) are radially embedded on the palatal membrane (3). The ends of the tongue guards (4) are bent toward the tongue. The angle between the tongue guards (4) and the pressure-supported retention layer (1) in the vertical direction is 45°-60°.

2. The improved orthodontic lingual fence according to claim 1, characterized in that: The pressure film retention layer (1) is made of medical grade transparent polyurethane film with a thickness of 0.3-0.5 mm. The palatal membrane (3) is adsorbed onto the pressure film base (2) by vacuum hot pressing technology.

3. The improved orthodontic lingual fence according to claim 2, characterized in that: The compression retention layer (1) covers the lingual and palatal sides of the maxillary anterior teeth, and the bottom edge of the compression retention layer (1) extends 0.5-1 mm below the gingival margin, conforming to the tooth surface contour.

4. The improved orthodontic lingual fence according to claim 3, characterized in that: The tongue guard (4) is made of medical stainless steel wire with a diameter of 0.8-1.0 mm. The two ends of the stainless steel wire are embedded in the palatal membrane (3), and the middle part of the stainless steel wire is bent and protrudes towards the tongue.

5. The improved orthodontic lingual fence according to claim 4, characterized in that: The stainless steel wire is embedded in the palatal diaphragm (3) by hot pressing, with an embedding depth of 0.2-0.4 mm. The connection between the palatal diaphragm (3) and the embedded stainless steel wire is polished.

6. The improved orthodontic lingual fence according to claim 5, characterized in that: The stainless steel wire is embedded in the palatal membrane (3) at one end and is provided with a mechanical locking knot (5), which is connected between the tongue guards (4).

7. The improved orthodontic lingual fence according to claim 6, characterized in that: The two ends of the pressure film base (2) are thickened and embedded with retaining wires (6).

8. The improved orthodontic lingual fence according to claim 7, characterized in that: The retaining wire (6) spans the inner and outer sides of the pressure film base (2) to enhance the retaining force of the pressure film base (2).

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