CN209916243U

CN209916243U - Extension plate for correction nail

Info

Publication number: CN209916243U
Application number: CN201920238458.9U
Authority: CN
Inventors: 潘世栋; 李育菁; 陈志发
Original assignee: BOMEI Co Ltd
Current assignee: BOMEI Co Ltd
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-01-10
Anticipated expiration: 2029-02-26

Abstract

The utility model relates to an extension plate of orthodontic nail for cooperate orthodontic nail of orthodontic usefulness, it contains an adjustment fixed part and a first cantilever, wherein, the adjustment fixed part further contains a plane, and an adjustment hole is located the plane, and a spacing wearing groove is located the plane and adjacent and communicate the adjustment hole, and a fixed orifices is located the plane and adjacent and communicate spacing wearing groove and a side fixed knot construct. The diameter of the adjusting hole is larger than that of the head of the correction nail, and the diameter of the fixing hole is between that of the head and the neck of the correction nail. The side fixing structure enables the nail seat of the correcting nail to be clamped in the side fixing structure. The first cantilever is provided with a plurality of first sleeving grooves for sleeving the elastic device. Therefore, the utility model discloses a correct nail extension board not only installs more easily to it changes in angle of adjustment.

Description

Extension plate for correction nail

Technical Field

The utility model relates to a correcting nail extension plate; and more particularly to an orthodontic nail extension plate for fitting to a dental appliance.

Background

With the improvement of the living standard and the advancement of medical technology, people not only need to live healthily but also become more confident, and most people think that the people have regular dential arrangement as one of the sources of the more confident. However, many people find their teeth untidy due to congenital or acquired factors. The irregular teeth not only affect the beauty of the face but also cause a lack of confidence, and further, the irregular teeth are more likely to lead to the health of the teeth and periodontal tissues. Therefore, many people straighten irregular teeth into regular rows of teeth by orthodontic techniques. In addition, the life span of teeth can be extended by orthodontic treatment.

In a typical orthodontic procedure, a practitioner will use an orthodontic pin to assist in orthodontic treatment. As shown in fig. 1, the physician can implant the orthodontic nail 5 as an anchoring source in the mouth to find a position where the best traction effect can be achieved, and simultaneously, the elastic device 2 such as a spring, an elastic chain or an elastic band applies a pulling force to pull the skewed teeth. However, during the traction process, the inclination angle and position of the teeth are continuously changed along with the treatment time, so that the doctor can not achieve the best traction effect by implanting the orthodontic nail at the beginning, and must find another position for implanting the orthodontic nail to achieve the best traction effect. The orthodontic nail implantable position is also limited due to the limited oral space, and furthermore, if the practitioner cannot find a position to achieve optimal traction, a skewed tooth may not receive effective traction.

In the prior art, an orthotic device 9 has been developed to fit over an orthotic staple (as shown in figure 2). The straightening device 9 can achieve the best traction effect of the elastic device 2 by different installation directions and angles. Since the mounting hole of the corrective device is not a through hole, and since the diameter of the conventional corrective nail is only 1.0mm to 2.3mm, when the corrective device is mounted on the corrective nail, the mounting hole of the corrective device is not easily aligned with the joint portion of the corrective nail, which makes the mounting difficult. In addition, when the angle of the correction device mounted on the correction nail cannot achieve the optimal traction effect, the correction device must be detached from the correction nail, and the correction device is adjusted to the required angle and then sleeved on the correction nail. Therefore, the correction device is not easy to install and the required steps are complicated no matter the angle is adjusted.

Therefore, there is a need for an orthodontic device that can be more easily installed and adjusted in angle to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a correct nail extension board, its simple structure, convenient operation can effectively solve prior art's problem.

In order to achieve the above object, the present invention discloses an extension plate for orthodontic nail, which is used to cooperate with orthodontic nail, wherein the orthodontic nail comprises a nail body and a nail seat connected to the nail body, and a mushroom-shaped head is formed on the nail seat, the mushroom-shaped head comprises a neck connected to the nail seat and a head connected to the neck, and the extension plate for orthodontic nail comprises:

an adjustable fixing portion, further comprising:

a plane;

an adjusting hole located on the plane, the diameter of the adjusting hole is larger than that of the head part of the mushroom-shaped head;

the limiting penetrating groove is positioned on the plane, is adjacent to the plane and is communicated with the adjusting hole, the inner wall of at least one side of the limiting penetrating groove extends towards the center of the limiting penetrating groove to form a limiting part, and the width of the limiting penetrating groove is smaller than the diameter of the neck part;

the fixing hole is positioned on the plane, is adjacent to the plane and is communicated with the limiting through groove, and the diameter of the fixing hole is between the diameter of the head part of the mushroom-shaped head and the diameter of the neck part; and

a lateral side fixing structure extending vertically outwards from the outer edge of the plane, the lateral side fixing structure forming a sleeving space connected with the adjusting hole and the fixing hole, and the width of the sleeving space corresponding to the width of the nail seat enables the nail seat to be clamped in the lateral side fixing structure; and

a first cantilever connected to the adjusting and fixing part, wherein the first cantilever is provided with a plurality of first sleeving grooves for sleeving at least one elastic device.

The side fixing structure further comprises a first substructure and a second substructure which are opposite to each other, the sleeving space is formed between the first substructure and the second substructure, and the distance between the first substructure and the second substructure corresponds to the width of the nail seat.

The opening directions of the first sleeving grooves are perpendicular to the opening directions of the adjusting hole and the fixing hole.

Wherein, the material of the correction nail extension plate is selected from one of metal, plastic and a combination of the metal and the plastic.

The elastic device comprises a first cantilever and a second cantilever, wherein the first cantilever is connected with the second cantilever, a first angle is formed between the first cantilever and the second cantilever, and the second cantilever is provided with a plurality of second sleeving grooves for sleeving at least one elastic device.

Wherein, the opening direction of the second attachment grooves is vertical to the opening direction of the adjusting hole and the fixing hole.

The extending directions of the second cantilever and the first cantilever are parallel to the plane of the adjusting and fixing part.

The extending direction of the first cantilever is parallel to the plane of the adjusting and fixing part, and a second angle is formed between the extending direction of the second cantilever and the plane.

Wherein, further include a third cantilever to connect the second cantilever, form a third angle between second cantilever and the third cantilever, the third cantilever sets up multiple third set and attaches the ditch groove to support at least one elastic device to attach.

At least two of the first nesting grooves are arranged at opposite positions on the first cantilever.

The elastic device comprises an adjusting fixing part, a first cantilever and a second cantilever, wherein the first cantilever is connected with the adjusting fixing part and provided with a plurality of first sleeving grooves for sleeving the elastic device.

To sum up, the utility model discloses a correct nail extension board is not only installed more easily to it changes in angle of adjustment.

Drawings

FIG. 1: a schematic diagram of prior art orthodontics is shown.

FIG. 2: a schematic diagram of prior art orthodontics is shown.

FIG. 3: the drawing shows a schematic structural view of the correction nail extension plate according to an embodiment of the present invention.

FIG. 4: there is shown a schematic illustration of the structure of the correction pin cooperating with the correction pin extension plate of fig. 3.

FIG. 5: the base of different corrective nails is shown in outline.

FIG. 6: an assembly of the correction pin extension plate and the correction pin according to fig. 3 is shown.

FIG. 7 a: there is shown a top view of the orthotic staple extension plate shown in accordance with figure 6.

FIG. 7 b: a cross-sectional view according to line a-a in fig. 7a is shown.

FIG. 8: the drawing shows a schematic structural view of the correction nail extension plate according to another embodiment of the present invention.

FIG. 9: the drawing shows the schematic structural view of a plurality of embodied correction nail extension plates according to the present invention.

FIG. 10: the drawing shows a schematic structural view of the correction nail extension plate according to another embodiment of the present invention.

FIG. 11: there is shown a schematic view of the orthodontic pin extension plate of figure 10 applied to orthodontic treatment.

FIG. 12: the drawing shows a schematic structural view of the correction nail extension plate according to another embodiment of the present invention.

FIG. 13: the drawing shows a schematic structural view of the correction nail extension plate according to another embodiment of the present invention.

FIG. 14: a schematic structural view of a correction nail extension plate according to another embodiment of the present invention is shown.

Detailed Description

In order to provide the advantages, spirit and features of the present invention, which will be more readily understood and appreciated, reference will now be made in detail to the preferred embodiments and accompanying drawings. It is noted that these embodiments are merely exemplary embodiments of the present invention, and the particular methods, devices, conditions, materials, etc., that are illustrated are not intended to limit the present invention or the corresponding embodiments. Also, the devices shown in the drawings are merely for relative positional representation and are not drawn to scale as they are actually drawn.

Please refer to fig. 3, fig. 4, fig. 5 and fig. 6. Fig. 3 is a schematic structural view of the correction nail extension plate 1 according to an embodiment of the present invention. Fig. 4 is a schematic structural view of the correction pin 5 engaged with the correction pin extension plate 1 of fig. 3. Fig. 5 shows a schematic view of the profile of the seat 52 of the different corrective nails 5 ', 5 "and 5'". Fig. 6 is a schematic view showing the combination of the correction pin extension plate 1 and the correction pin 5 according to fig. 3. An orthodontic nail extension plate 1 of the present embodiment is adapted to be used with an orthodontic nail 5 for orthodontic use, wherein the orthodontic nail 5 comprises a shank 51 and a seat 52 connected to the shank 51, and the seat 52 is formed with a mushroom-shaped head 53, and the mushroom-shaped head 53 comprises a neck 531 connected to the seat 52 and a head 532 connected to the neck 531. As shown in fig. 3, the correction pin extending plate 1 may include an adjustment fixing portion 12 and a first cantilever 14. The adjusting and fixing portion 12 further includes a plane 121, an adjusting hole 122, a limiting through slot 126, a fixing hole 123 and a side fixing structure 124. Adjustment hole 122 is located on plane 121, and the diameter of adjustment hole 122 is greater than the diameter of head 532 of mushroom-shaped head 53. The limiting through groove 126 is located on the plane 121 and adjacent to and communicated with the adjusting hole 122, at least one side of the inner wall of the limiting through groove 126 extends towards the center of the limiting through groove 126 to form a limiting part 1261, and the width of the limiting through groove 126 is smaller than the diameter of the neck 531. The fixing hole 123 is located on the plane 121 and adjacent to and partially overlapped with the adjusting hole 122, and moreover, the diameter of the fixing hole 123 is between the diameter of the head 532 of the mushroom-shaped head 53 and the diameter of the neck 531. The side fixing structure 124 extends perpendicularly outward from the outer edge of the plane 121, the side fixing structure 124 forms a sleeving space 125 connected with the adjusting hole 122 and the fixing hole 123, and the width of the sleeving space 125 corresponds to the width of the nail seat 52, so that the nail seat 52 can be clamped in the side fixing structure 124. The first arm 14 is connected to the adjustment fixing portion 12, and the first arm 14 is provided with a plurality of first attaching grooves 141 for attaching at least one elastic device.

The side fixing structure 124 of the orthopedic nail extension plate 1 further includes a first sub-structure 1241 and a second sub-structure 1242 opposite to each other, and the first sub-structure 1241 and the second sub-structure 1242 form the aforementioned engaging space 125 therebetween. The opening directions of the first nesting grooves 141 provided on the first suspension arm 14 are perpendicular to the opening directions of the adjustment hole 122 and the fixing hole 123. Further, at least two of the plurality of first nesting grooves 141 are disposed at opposite positions of the first suspension arm 14, and the two rightmost first nesting grooves 141 are formed at opposite positions with respect to each other as shown in fig. 3.

In this embodiment, the seat 52 of the orthosis nail 5 further comprises a seat plane 521 connected to the neck 531 of the mushroom-shaped head 53, and the diameter of the head 532 of the mushroom-shaped head 53 is larger than the diameter of the neck 531 of the mushroom-shaped head 53. As shown in fig. 5, the shape of the nail seat 52 ', 52 "and 52'" of the correction nail 5 ', 5 "and 5'" can be selected from a quadrangle, a hexagon, an octagon or a polygon with even number, one side of the polygon and the opposite side thereof can form a distance, which is the width of the nail seat 52, and the width of the nail seat 52 is larger than the diameter of the adjustment hole 122 of the correction nail extension plate 1.

In practical applications, since the diameter of the adjustment hole 122 of the nail extension plate 1 is larger than the diameter of the head 532 of the mushroom-shaped head 53 of the nail 5, the adjustment hole 122 can be inserted into the mushroom-shaped head 53 of the nail 5 from one side of the plane 121. Further, since the width of the nail seat 52 is larger than the diameter of the adjustment hole 122, the correction nail extension plate 1 can be held on the nail seat plane 521 without sliding down to the shank 51. Thereby, the correction nail extension plate 1 can be adjusted to any angle along the direction parallel to the nail seat plane 521. Therefore, the correcting nail extension plate 1 of the utility model can be directly attached to the correcting nail 5 to adjust the angle so as to find out the best traction position.

Please refer to fig. 3, fig. 7a and fig. 7 b. Fig. 7a shows a top view of the correction pin extension plate 1 according to fig. 6. FIG. 7b shows a cross-sectional view along line A-A in FIG. 7 a. When the orthosis extension plate 1 determines the angle of installation, the orthosis extension plate 1 can be translated along the determined angle of installation to move the fixing hole 123 to the neck 531 of the mushroom head 53. Further, when the correction pin extending plate 1 is translated, the limiting through groove 126 first contacts the neck 531 of the mushroom-shaped head 53, and then the correction pin extending plate 1 is further translated to move the fixing hole 123 to the neck 531 of the mushroom-shaped head 53, so that the pin seat 52 moves relatively to be engaged with the engaging space 125 to fix the correction pin extending plate 1. Since the width of the limiting through-groove 126 is smaller than the diameter of the neck 531 of the mushroom-shaped head 53, a large external force is applied to force the neck 531 of the mushroom-shaped head 53 to pass through the limiting through-groove 126 and further move the fixing hole 123 of the correction nail extension plate 1 to the neck 531 of the mushroom-shaped head 53 to fix the correction nail 5, and besides, when the neck 531 of the correction nail 5 is located in the fixing hole 123, since the width of the limiting through-groove 126 is smaller than the diameter of the neck 531, the limiting part 1261 will block the neck 531 and make it difficult to disengage from the fixing hole 123 of the correction nail extension plate 1 to the adjusting hole 122. In this embodiment, the inner walls of the through-slot 126 extend toward the central portion of the through-slot 126 to form a protruding limiting portion 1261 (as shown in fig. 3), which is a structure with two sides retracted inward. Since one side and the opposite side of the profile of the nail seat 52 are parallel to and abut against the contact surfaces of the first substructure 1241 and the second substructure 1242 of the side fixing structure 124, the correction nail extension plate 1 can be fixed on the correction nail 5 at the aforementioned installation angle. In addition, since the diameter of the fixing hole 123 is smaller than the diameter of the head 532 of the mushroom-shaped head 53, the correction pin extending plate 1 does not come off from above the nail seat plane 521.

When the angle of the correction nail extension plate 1 needs to be adjusted again, the correction nail extension plate 1 can be translated reversely along the original angle to move the adjustment hole 122 to the neck 531 of the mushroom-shaped head 53, at this time, the nail seat 52 is separated from the sleeving space of the side fixing structure 124 and the neck 531 of the mushroom-shaped head 53 passes through the limiting through groove 126 again, and the correction nail extension plate 1 becomes the state of adjustable angle. Therefore, the utility model discloses a correct nail extension board 1 need not dismantle from correcting nail 5, can directly lean on to attach and carry out installation and angle of adjustment on correcting nail 5.

As mentioned above, the limiting penetrating groove 126 of the present embodiment is a double-side inward-shrinking structure, but the present invention is not limited thereto in practice. Please refer to fig. 8. Fig. 8 is a schematic structural view of the correction nail extension plate 1 according to another embodiment of the present invention. In this embodiment, the limiting through-groove 126 of the correction pin extending plate 1 is a single-side inward-retracted structure, i.e., a limiting portion 1261 is extended from the inner wall of one side of the limiting through-groove 126 toward the center of the limiting through-groove 126, and the single-side inward-retracted limiting through-groove 126 can also achieve the effect of blocking the neck 531 of the mushroom-shaped head 53 so that the neck is not easily separated from the fixing hole 123 of the correction pin extending plate 1. The functions of the other units in this embodiment are substantially the same as the functions of the corresponding units in the previous embodiment, and therefore, the detailed description thereof is omitted.

Please refer to fig. 6 again. When the orthodontic nail extension plate 1 is fixed to the orthodontic nail 5, one end of an elastic means such as a spring, an elastic chain or a rubber band may be fitted over the first fitting groove 141 and the other end of the elastic means may be fitted over the orthodontic appliance of the tooth, so that the elastic means has an effect of pulling the tooth. Furthermore, the elastic device can be simultaneously inserted into two first insertion grooves 141 at opposite positions on the first arm 14 to increase the stability and reduce the probability of falling off of the elastic device. Since the opening direction of the first attachment groove 141 is perpendicular to the opening direction of the adjustment hole 122 and the fixing hole 123, in other words, the opening direction of the first attachment groove 141 is parallel to the gum, the elastic device is more easily attached to the first attachment groove 141.

Please refer to fig. 9. Fig. 9 is a schematic structural view of the correction nail extension plates 1 ', 1 ", and 1'" according to embodiments of the present invention. As shown in fig. 9, the side fixing structures 124 ', 124 ", and 124"' of the nail extension plates 1 ', 1 ", and 1"' may form the sheathing space 125 by one of a horseshoe shape, a U shape, or a polygon shape, in addition to the sheathing space 125 formed by the first substructure 1241 and the second substructure 1242 in the embodiment of fig. 3. Further, the side fixing structures 124 may be configured to correspond to the shape of the nail seat 52 of the correction nail 5, and thus, can be more firmly fixed when the correction nail extension plate 1 is fixed to the correction nail 5.

Please refer to fig. 10. Fig. 10 is a schematic structural view of a correction nail extension plate 1 according to another embodiment of the present invention. As shown in fig. 10, the present embodiment is different from the previous embodiments in that the correction pin extending plate 1 of the present embodiment further comprises a second cantilever 15 connected to the first cantilever 14. A first angle is formed between the second suspension arm 15 and the first suspension arm 14Degree a₁And the extending directions of the second suspension arm 15 and the first suspension arm 14 are parallel to the plane 121 of the adjustment fixing portion 12. In this embodiment, the second suspension arm 15 can be swung leftwards or rightwards by the first suspension arm 14, for example, as shown in the upper and lower diagrams of fig. 10. Further, the second suspension arm 15 may be provided with a plurality of second attachment grooves 152 for the elastic device to be attached, and the opening directions of the second attachment grooves 152 are perpendicular to the opening directions of the adjustment hole 122 and the fixing hole 123. The function of the second attachment groove 152 is the same as that of the first attachment groove 141, and thus, the description thereof is omitted. In addition, other components of the correction nail extension plate 1 of the present embodiment are substantially the same as the corresponding components of the previous embodiment in structure and function, and therefore, the description thereof is omitted.

Please refer to fig. 11. Fig. 11 is a view illustrating the orthodontic nail extension plate 1 of fig. 10 applied to orthodontic treatment. Generally, when the irregular dentition is serious, the number of teeth to be corrected is large. As shown in fig. 11, if the patient's mouth contains a skewed tooth 70 and a protruding tooth 80 that need to be straightened, the orthodontic pins 5 and the orthodontic pin extension plate 1 can be disposed at the positions shown in the figure, and at this time, the first cantilever 14 of the orthodontic pin extension plate 1 can cooperate with one elastic device 2 to pull the protruding tooth 80, and the second cantilever 15 cooperates with the other elastic device 2 to pull the skewed tooth 70. Therefore, the orthodontic nail extension plate 1 can simultaneously straighten two teeth by the first and

second cantilever arms

14 and 15 in combination with the elastic device 2.

Please refer to fig. 12. Fig. 12 is a schematic structural view of the correction pin extension plate 1 according to another embodiment of the present invention. In the embodiment of fig. 10, the extending directions of the second suspension arm 15 and the first suspension arm 14 are both parallel to the plane 121 of the adjustment fixing portion 12. In contrast, as shown in fig. 12, the extending direction of the first suspension arm 14 of the present embodiment is parallel to the plane 121 of the adjustment fixing portion 12, and the extending direction of the second suspension arm 15 forms a second angle a with the plane 121₂. In practical application, the irregular dentition not only has horizontal deflection, but also has front and back dislocation, and the space of the oral cavity is limited, therefore, the utility model discloses a correction nail extension board 1 can be by different anglesThe structure is orthodontic at a plurality of angles.

Please refer to fig. 13 and 14. Fig. 13 is a schematic structural view of the correction nail extension plate 1 according to another embodiment of the present invention. Fig. 14 is a schematic structural view of a nail extension plate 1 according to another embodiment of the present invention. As shown in fig. 13, the difference between the present embodiment and the previous embodiments is that the nail extension plate 1 may further include a third cantilever 16 connected to the second cantilever 15, and a third angle a is formed between the third cantilever 16 and the second cantilever 15₃. Further, the third suspension arm 16 is provided with a plurality of third attachment grooves 162 for attachment of the elastic means. In addition, as shown in fig. 14, the difference between the present embodiment and the previous embodiments is that the correction pin extending plate 1 further includes a fourth suspending arm 17 connected to the adjustment fixing portion 12, and the fourth suspending arm 17 is provided with a plurality of fourth attaching grooves 172 for the elastic devices to attach. The functions of the third attachment grooves 162 and the fourth attachment grooves 172 are the same as those of the first attachment grooves 141, and thus are not described again. On the other hand, the third angle a₃May be at a first angle a₁Or a second angle a₂In the direction of (a). Therefore, through the various types of the orthodontic nail extension plate 1, the orthodontic can be performed at various angles according to various conditions.

Since the elastic means should maintain a certain degree of tension when pulling the teeth, the extension plate 1 of the orthodontic nail in each of the above embodiments should have a certain strength without deformation or breakage due to the tension. In an embodiment, the material of the straightening nail extension plate 1 provided by the present invention can be selected from stainless steel, titanium alloy or metal compatible with human body. In another embodiment, the material of the straightening nail extension plate 1 provided by the present invention can be selected to be plastic. In yet another embodiment, the material of the correction nail extension plate 1 provided by the present invention can be a combination of metal and plastic.

To sum up, the utility model discloses a correct nail extension board is not only installed more easily by adjustment fixed part and first cantilever to it changes in angle of adjustment.

The foregoing detailed description of the preferred embodiments is intended to more clearly illustrate the features and spirit of the present invention, and not to limit the scope of the invention by the preferred embodiments disclosed above. On the contrary, the intention is to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. The scope of the claims is thus to be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the scope of the appended claims.

Claims

1. An orthodontic nail extension plate for use in conjunction with an orthodontic nail for orthodontic purposes, the orthodontic nail comprising a shank and a seat connected to the shank, the seat having a mushroom-shaped head formed thereon, the mushroom-shaped head comprising a neck connected to the seat and a head connected to the neck, the orthodontic nail extension plate comprising:

an adjustable fixing portion, further comprising:

a plane;

2. The extension board for orthopedic nails of claim 1, wherein the lateral securing structure further comprises a first sub-structure and a second sub-structure opposite to each other, the first sub-structure and the second sub-structure form the space therebetween, and the distance between the first sub-structure and the second sub-structure corresponds to the width of the nail seat.

3. The extension plate for correction nail according to claim 1, wherein the opening direction of the first attachment grooves is perpendicular to the opening direction of the adjustment hole and the fixing hole.

4. The orthodontic nail extension of claim 1, wherein the orthodontic nail extension is made of a material selected from the group consisting of metal, plastic, and combinations thereof.

5. The orthodontic nail extension plate of claim 1, further comprising a second cantilever connected to the first cantilever, the second cantilever forming a first angle with the first cantilever, the second cantilever having a plurality of second attachment grooves for attachment of at least one resilient device.

6. The extension plate for correction nail according to claim 5, wherein the opening direction of the second nesting grooves is perpendicular to the opening direction of the adjustment hole and the fixing hole.

7. The extension board for correction nail according to claim 5, wherein the extension direction of the second cantilever and the first cantilever is parallel to the plane of the adjustment fixing portion.

8. The extension plate for orthodontic nail of claim 5 wherein the extension direction of the first cantilever is parallel to the plane of the adjustment fixing portion and the extension direction of the second cantilever forms a second angle with the plane.

9. The extension board for correction nail according to claim 5, further comprising a third cantilever connected to the second cantilever, wherein the third cantilever and the second cantilever form a third angle therebetween, and the third cantilever is provided with a plurality of third attaching grooves for attaching at least one elastic device.

10. The orthodontic nail extension plate of claim 1, wherein at least two of the first nesting grooves are disposed at opposite locations on the first cantilevered arm.

11. The extension plate for orthopedic nails of claim 1, further comprising a fourth cantilever arm connected to the adjustment fixture, the fourth cantilever arm having a plurality of fourth attachment grooves for attachment of at least one elastic device.