Novel invisible orthodontic appliance for integrally adducting anterior teeth in tooth extraction case

Abstract

The utility model provides a novel invisible orthodontic appliance for integrally adducting anterior teeth in a tooth extraction case, which comprises a bracket-free invisible orthodontic appliance body, the thickness of a rear tooth area of the bracket-free invisible orthodontic appliance body is increased by 0.1-0.25 mm on the basis of the original uniform thickness, the thickness of a distal surface of a second molar is increased by 0.15-0.25 mm, and the thickness of the rear tooth area of the bracket-free invisible orthodontic appliance body is increased by 0.1-0.25 mm on the basis of the original uniform thickness of the bracket-free invisible orthodontic appliance body. According to the bracket-free invisible orthodontic appliance body, a falling prevention piece is designed at a tooth extraction position of the invisible orthodontic appliance, the falling prevention piece is wider in a position close to an occlusal surface and narrower in a position close to a gum, and the size of the falling prevention piece is matched with the change of a gap of the tooth extraction position. According to the application, the back tooth area is thickened on the basis of the original uniform thickness, and the distal surface of the second molar is thickened, so that the anchorage of the back tooth area can be enhanced, and meanwhile, as for the inclination of adjacent teeth in the tooth extraction gap, the anti-collapse piece which is wider in the position close to the occlusal surface and narrower in the position close to the gum is designed at the tooth extraction position; therefore, when the dental crowns of the adjacent teeth on the two sides incline towards the tooth extraction gap, the anti-tilting piece can generate an inclination resisting effect. According to the invention, through the optimal design of the accurate non-uniform thickness, the correction efficiency of the tooth extraction case can be improved.

Description

Technical Field

[0001] This utility model relates to the field of oral medical device technology, specifically to a novel invisible orthodontic appliance for the overall retraction of anterior teeth in cases of tooth extraction. Background Technology

[0002] Clear aligners are computer-aided, transparent, removable orthodontic appliances made of flexible material. They are a series of continuous movements that achieve orthodontic correction through incremental, small-scale tooth movements. This appliance allows control not only on the magnitude of the orthodontic force but also on the duration of its application. At different stages, only certain teeth can move, while others act as anchorage, thus completing the orthodontic process.

[0003] Traditional clear aligners, when used for overall retraction of anterior teeth in extraction cases, often exhibit a typical rollercoaster effect: adjacent teeth on both sides of the extraction site tilt towards the extraction space, i.e., mesial tilting of the crowns in the posterior region, leading to loss of posterior anchorage; distal tilting of the crowns of canines, affecting the closure of the extraction space; insufficient torque control in the anterior region, labial inclination of the incisor roots, and deepening of the overbite of the anterior teeth. Even using retention attachments bonded to the labial and buccal surfaces of the teeth on both sides of the extraction space cannot effectively solve these problems, resulting in low orthodontic treatment efficiency. However, the inventors of this application have discovered through research that the reason lies in the fact that the design and manufacturing of traditional clear aligners are limited by the influence of the heat-pressed film of the raw materials. These films are all of uniform thickness, making it impossible to provide local reinforcement or functional design in weak areas of the orthodontic treatment. Utility Model Content

[0004] To address the technical problem that the design and manufacturing of existing clear aligners are limited by the influence of the heat-pressed film of the raw materials, which are all films of uniform thickness, making it impossible to locally strengthen or functionally design weak areas, resulting in low orthodontic treatment efficiency, this utility model provides a new type of clear aligner for overall retraction of anterior teeth in cases of tooth extraction.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A novel clear aligner for retracting anterior teeth in cases of tooth extraction includes a clear aligner body. The posterior tooth region of the clear aligner body is thickened by 0.1–0.25 mm on top of its original uniform thickness, and the distal surface of the second molar is thickened by 0.15–0.25 mm. The clear aligner body is designed with a backstop at the extraction site. The backstop is wider near the occlusal surface and narrower near the gingival surface, and its size is adapted to the change in the extraction site gap.

[0007] Furthermore, the bracketless clear aligner body is thickened by 0.1–0.25 mm on the buccal surface of the anterior teeth near the gingival margin, and by 0.1–0.25 mm on the lingual incisal edge of the anterior teeth.

[0008] Compared with the prior art, the novel invisible orthodontic appliance for overall retraction of anterior teeth in tooth extraction cases provided by this utility model has the following advantages:

[0009] 1) Based on the existing bracketless clear aligner body, the posterior tooth area is thickened by 0.1 to 0.25 mm on the original uniform thickness, and the distal surface of the second molar is thickened by 0.15 to 0.25 mm to enhance the anchorage of the posterior tooth area.

[0010] 2) Regarding the tilting of adjacent teeth in the extraction gap, this new type of clear aligner, based on the existing bracketless clear aligner body, designs a tilt-prevention component at the extraction position of the clear aligner. The tilt-prevention component is characterized by being wider near the occlusal surface and narrowing near the gingival surface, and its size is adapted to the change of the extraction gap. Thus, when the crowns of the adjacent teeth on both sides tilt towards the extraction gap, this tilt-prevention component can resist the tilting.

[0011] 3) For the problems of labial inclination of anterior tooth roots and deepening of overbite, this new type of invisible aligner is based on the existing bracketless invisible aligner body, with a thickness of 0.1 to 0.25 mm on the buccal surface of the anterior teeth near the gingival side and a thickness of 0.1 to 0.25 mm on the lingual incisal edge of the anterior teeth, so as to form a torque to resist torque loss.

[0012] 4) The novel invisible aligner structure provided in this application, through the optimized design of precise non-uniform thickness, can basically overcome the various problems mentioned above when extracting premolars and retracting anterior teeth in traditional hot-pressing invisible aligners, thereby improving the efficiency of orthodontic treatment. At the same time, the optimized invisible aligner can be directly manufactured through 3D printing technology. Attached Figure Description

[0013] Figure 1 This is a schematic diagram showing the thickening of the posterior teeth area in the novel invisible orthodontic appliance provided by this utility model.

[0014] Figure 2 This is a schematic diagram of the thickening of the distal surface of the second molar in the novel invisible orthodontic appliance provided by this utility model.

[0015] Figure 3 This is a schematic diagram of the anti-tipping element designed at the extraction site of the new invisible aligner provided by this utility model.

[0016] Figure 4 This is a schematic diagram showing the thickening of the buccal surface of the incisor near the gingiva provided by this utility model.

[0017] Figure 5This is a schematic diagram showing the thickening of the lingual incisal edge of the new invisible orthodontic appliance provided by this utility model. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0019] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] Please refer to Figures 1 to 3 As shown, this utility model provides a novel invisible aligner for overall retraction of anterior teeth in cases of tooth extraction. It includes a bracketless invisible aligner body, which refers to an existing uniform-thickness bracketless invisible aligner. Specifically, the posterior tooth region (second premolar, first molar, and second molar) of the bracketless invisible aligner body is thickened by 0.1–0.25 mm based on the original uniform thickness (commonly 0.5 mm) (see [reference to previous description]). Figure 1 (At the square frame location), and simultaneously thickened by 0.15–0.25 mm on the distal surface of the second molar (see thickening section). Figure 2 (at the center coil), thereby enhancing anchorage in the posterior region; the bracketless clear aligner body is designed with a tipping preventer at the extraction site of the clear aligner (see...). Figure 3 (At the center of the circle), the anti-tilting element is wider near the occlusal surface and narrower near the gingival surface, and its size is adapted to the change of the extraction space. Therefore, this anti-tilting element can resist the tilting of adjacent teeth in the extraction space.

[0021] In a preferred embodiment, the bracketless clear aligner body is thickened by 0.1–0.25 mm on the buccal surface of the anterior teeth (central incisors, lateral incisors, and canines) near the gingival margin (see thickening details). Figure 4 (At the square frame), and thickened by 0.1–0.25 mm at the lingual incisal edge of the anterior teeth (see thickening section). Figure 5 (in the Chinese frame area), thus forming a torque couple to resist torque loss, thereby solving the problems of insufficient torque control in the anterior tooth area, labial inclination of the anterior tooth root, and deepening of overbite.

[0022] Compared with the prior art, the novel invisible orthodontic appliance for overall retraction of anterior teeth in tooth extraction cases provided by this utility model has the following advantages:

[0023] 1) Based on the existing bracketless clear aligner body, the posterior tooth area is thickened by 0.1 to 0.25 mm on the original uniform thickness, and the distal surface of the second molar is thickened by 0.15 to 0.25 mm to enhance the anchorage of the posterior tooth area.

[0024] 2) Regarding the tilting of adjacent teeth in the extraction gap, this new type of clear aligner, based on the existing bracketless clear aligner body, designs a tilt-prevention component at the extraction position of the clear aligner. The tilt-prevention component is characterized by being wider near the occlusal surface and narrowing near the gingival surface, and its size is adapted to the change of the extraction gap. Thus, when the crowns of the adjacent teeth on both sides tilt towards the extraction gap, this tilt-prevention component can resist the tilting.

[0025] 3) For the problems of labial inclination of anterior tooth roots and deepening of overbite, this new type of clear aligner is based on the existing bracketless clear aligner body, with a thickness of 0.1 to 0.25 mm on the buccal surface of the anterior teeth near the gingival side and a thickness of 0.1 to 0.25 mm on the lingual incisal edge of the incisors, so as to form a torque to resist torque loss.

[0026] 4) The novel invisible aligner structure provided in this application, through the optimized design of precise non-uniform thickness, can basically overcome the various problems mentioned above when extracting premolars and retracting anterior teeth in traditional hot-pressing invisible aligners, thereby improving the efficiency of orthodontic treatment. At the same time, the optimized invisible aligner can be directly manufactured through 3D printing technology.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A new type of aligner for retraction of anterior teeth in whole in the case of extraction, comprising a bracket-free aligner body, characterized in that, The posterior tooth area of ​​the clear aligner body is thickened by 0.1–0.25 mm on the basis of the original uniform thickness, and the distal surface of the second molar is thickened by 0.15–0.25 mm. The clear aligner body is designed with a backstop at the extraction site of the clear aligner. The backstop is wider near the occlusal surface and narrower near the gingival surface, and its size is adapted to the change of the extraction site gap.

2. The new type of invisible aligner for retraction of anterior teeth in whole for the extraction case according to claim 1, characterized in that, The bracketless clear aligner body is thickened by 0.1–0.25 mm on the buccal surface of the anterior teeth near the gingival margin, and by 0.1–0.25 mm on the lingual incisal edge of the anterior teeth.

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