Molar propelling appliance with adjustable elasticity

Abstract

The utility model relates to an elastic-force-adjustable molar propelling appliance, in particular to the technical field of teeth. Comprising a belt ring, a palate tube, a spring, an arch wire, a loop and an S-shaped steel wire. The defects that a traditional gap recovery appliance is complex in arrangement and adjustment, and the size of gap recovery cannot be adjusted according to the size of a gap between teeth of a patient are overcome. In addition, in the using process of the gap recovery appliance, due to the fact that adjustment of a single spring is not stable, the phenomenon that the spring deviates towards the tooth cutting end and falls off easily occurs, and stable use of the gap recovery appliance cannot be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of dental technology, and in particular to an elastically adjustable molar advance orthodontic appliance. Background Technology

[0002] Primary dentition plays a vital role in a child's growth and development. As the child's masticatory organs, primary teeth not only function in chewing, speech, aesthetics, and maintaining the length of the dental arch, promoting normal maxillofacial development, but also play a positive role in guiding the eruption direction of permanent teeth. The maintenance of physiological space between primary teeth effectively induces the normal eruption of permanent teeth. However, premature loss of primary teeth due to severe caries, pulpitis, periapical disease, or other causes not only affects their function but also disrupts their ability to maintain physiological space, thus impacting the eruption of subsequent permanent teeth in their normal positions.

[0003] Studies have shown that premature loss of 50% of the first primary molars and 70% of the second primary molars is accompanied by varying degrees of reduced or even closed edentulous spaces. The space changes rapidly in the first 6 months after premature loss of primary molars, mainly reflected in changes in the dental arch length. Narrowing of the dental arch can lead to a smaller arch, insufficient eruption space, causing tooth misalignment, impaction, and even deepening of overbite and overjet. Premature loss of the second primary molar, in particular, can cause jaw relationship disorders. Therefore, maintaining space after premature loss of primary teeth is of great significance in preventing malocclusion. Using space appliances to maintain normal edentulous space and guide the normal eruption of adjacent teeth and successor permanent teeth is crucial for maintaining the health of the child's stomatognathic system and reducing the incidence of malocclusion. For cases of unilateral premature loss of the first primary molar, or unilateral premature loss of the second primary molar after the eruption of the first permanent molar, the banded wire space appliance is a widely used device in clinical practice for maintaining the space of the prematurely lost primary molar and preventing the displacement of adjacent teeth.

[0004] However, current interdental appliances still have some drawbacks: 1. Existing interdental appliances cannot adjust the size of the gaps between the patient's teeth according to their actual size. Furthermore, the single-spring adjustment is not very stable during use, and the spring is prone to shifting towards the incisal edge of the tooth and falling out. 2. They cannot simultaneously ensure the stability of the interdental appliance and prevent the elongation of opposing teeth or the premature eruption of permanent teeth. 3. Traditional appliances do not widen the gaps; during treatment, jawbone development causes the gaps in the defect area to increase, requiring re-fabrication. 4. Traditional appliances are complex to set up, difficult to adjust, and inconvenient to operate. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] This invention provides an elastically adjustable molar advance appliance, which overcomes the problems of traditional gap restoration appliances, which are complicated to set up and adjust, and cannot adjust the size of the gap restoration according to the size of the gap between the patient's teeth. In addition, during the use of the gap restoration appliance, the single spring adjustment is not very stable, and the spring is prone to shifting towards the incisal edge of the tooth and falling off, which cannot guarantee the stable use of the gap restoration appliance.

[0007] (2) Technical solution

[0008] To solve the above-mentioned technical problems, this utility model provides an elastic adjustable molar advancement orthodontic appliance, including a band, palatal tube, spring, archwire, coil, and S-shaped wire;

[0009] The band is fitted onto the first permanent molar; the band is provided with the palatal tube; the palatal tube is fixedly connected to the mesial surface of the band; the spring includes a plurality of U-shaped archwires and a loop formed by bending the U-shaped bend in the middle of the archwires; one end of the archwire is located inside the palatal tube; the other end of the archwire is pressed against the buccal surface of the adjacent tooth on the first permanent molar; the band is connected with the S-shaped wire.

[0010] Preferably, the end of the archwire away from the loop is bent, and the bending angle of the end matches that of the adjacent tooth.

[0011] Preferably, the spring is placed horizontally between the first permanent molar and the adjacent tooth in the desired gap.

[0012] Preferably, the S-shaped steel wire is placed horizontally above the spring; the free ends of the spring are curved to fit the tooth surface.

[0013] Preferably, the lower concave end of the S-shaped wire is welded and fixed to the band ring near the buccal surface of the first permanent molar; the upper concave end of the S-shaped wire is pressed against the lingual surface of the adjacent tooth on the first permanent molar; and the bending angle of the upper end of the S-shaped wire matches that of the adjacent tooth.

[0014] (3) Beneficial effects

[0015] This invention provides an elastically adjustable molar advance appliance, which overcomes the problems of traditional gap restoration appliances, which are complicated to set up and adjust, and cannot adjust the size of the gap restoration according to the size of the gap between the patient's teeth. In addition, during the use of the gap restoration appliance, the single spring adjustment is not very stable, and the spring is prone to shifting towards the incisal edge of the tooth and falling off, which cannot guarantee the stable use of the gap restoration appliance.

[0016] 1. This utility model can adjust the elasticity by adjusting the coil, and adjust the length of the coil according to the shape of the patient's dental arch and the size of the gap. It is simple to make and can be completed in one go. No impressions or laboratory processing are required. Chairside operation time is short, reducing the number of follow-up visits for patients.

[0017] 2. This utility model, by setting a spring and an S-shaped steel wire in the gap, can act as an anti-eruption device to prevent premature eruption of the successor permanent tooth and to prevent the elongation of the opposing tooth.

[0018] 3. This utility model achieves a stabilizing effect by setting the free ends of the spring and S-shaped steel wire to press against the adjacent teeth. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an elastically adjustable molar advance orthodontic appliance proposed in this utility model;

[0020] Figure 2 In this utility model Figure 1 A plan view;

[0021] Figure 3 This is a schematic diagram of the spring structure in this utility model;

[0022] Figure reference numerals: 1-band, 2-first permanent molar, 3-palatal tube, 4-spring, 41-archwire, 42-coil, 5-S-shaped wire. Detailed Implementation

[0023] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 1-3 As shown, the adjustable molar advance appliance of this utility model includes a band 1, a palatal tube 3, a spring 4, an archwire 41, a coil 42, and an S-shaped wire 5.

[0025] The band 1 is fitted onto the first permanent molar 2; the band 1 is provided with the palatal tube 3; the palatal tube 3 is fixedly connected to the mesial surface of the band 1; the spring 4 includes a plurality of U-shaped archwires 41 and a loop 42 formed by bending the U-shaped bend in the middle of the archwires 41 into a loop; one end of the archwire 41 is located inside the palatal tube 3; the other end of the archwire 41 is pressed against the buccal surface of the adjacent tooth on the first permanent molar 2, and the gap between the first permanent molar 2 and the adjacent tooth is the gap that needs to be maintained; the band 1 is connected with the S-shaped steel wire 5.

[0026] The end of the archwire 41 away from the loop 1 is bent, and the bending angle of the end matches that of the adjacent tooth.

[0027] The spring 4 is horizontally placed between the first permanent molar 2 and the adjacent tooth to maintain the required gap; this gap is the missing deciduous molar.

[0028] The S-shaped steel wire 5 is placed horizontally above the spring 4; the free ends of the spring 4 are curved to fit the tooth surface.

[0029] The lower concave end of the S-shaped wire 5 is welded and fixed to the band 1 near the buccal surface of the first permanent molar 2; the upper concave end of the S-shaped wire 5 is pressed against the lingual surface of the adjacent tooth on the first permanent molar 2; and the bending angle of the upper end of the S-shaped wire 5 matches the adjacent tooth; by pressing one end of the adjacent tooth with the archwire 41 away from the band 1, and pressing the other end of the adjacent tooth with the upper bent part of the S-shaped wire 5, the position of the adjacent tooth is fixed, thereby fixing the position of the first permanent molar 2 connected by the spring 4 and the S-shaped wire 5, realizing the function of the device in maintaining the recovery gap, and further enhancing the stability of the recovery gap of the orthodontic appliance.

[0030] Working principle: The band 1 is put on the first permanent molar 2. During the process of putting on the band 1, the palatal tube 3 on the band 1 faces the missing tooth end. At the same time, the free end of the upper part of the S-shaped wire 5 is pressed on the lingual surface of the adjacent tooth on the first permanent molar 2. Then, one end of the spring 4 is inserted into the palatal tube 3, and the other end of the long spring 4 is bent and pressed on the buccal surface of the adjacent tooth.

[0031] The length of the archwire 41 is adjusted by adjusting the coil 42 on the long spring 4 to suit the spacing between the first permanent molar 2 and adjacent teeth in different patients. Any content not described in detail in this specification is prior art known to those skilled in the art.

[0032] The embodiments described above are merely preferred embodiments of the present invention, and are described in a relatively specific and detailed manner. However, the present invention is not limited to these embodiments. It should be noted that for those skilled in the art, any improvements made without departing from the spirit of the present invention fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A flexible molar advance appliance, characterized in that, Includes a band ring (1), a palatal tube (3), a spring (4), an archwire (41), a coil (42), and an S-shaped steel wire (5); The band (1) is fitted onto the first permanent molar (2); the band (1) is provided with the palatal tube (3); the palatal tube (3) is fixedly connected to the mesial surface of the band (1); the spring (4) includes a plurality of U-shaped archwires (41) and a loop (42) formed by bending the U-shaped bend in the middle of the archwires (41); one end of the archwires (41) is located inside the palatal tube (3); the other end of the archwires (41) is pressed against the buccal surface of the adjacent tooth on the first permanent molar (2); the band (1) is connected with the S-shaped steel wire (5).

2. The elastically adjustable molar advance appliance according to claim 1, characterized in that, The end of the archwire (41) away from the loop (1) is bent, and the bending angle of the end matches that of the adjacent tooth.

3. The elastically adjustable molar advance appliance according to claim 1, characterized in that, The spring (4) is placed horizontally between the first permanent molar (2) and the adjacent teeth to maintain the required gap.

4. The elastically adjustable molar advance appliance according to claim 1, characterized in that, The S-shaped steel wire (5) is placed horizontally above the spring (4); the free ends of the spring (4) are curved to fit the tooth surface.

5. The elastically adjustable molar advance appliance according to claim 1, characterized in that, The lower concave end of the S-shaped wire (5) is welded and fixed to the band (1) near the buccal surface of the first permanent molar (2); the upper concave end of the S-shaped wire (5) is pressed against the lingual surface of the adjacent tooth on the first permanent molar (2); and the bending angle of the upper end of the S-shaped wire (5) matches that of the adjacent tooth.

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