CN212661978U

CN212661978U - Auxiliary arch for expanding arch for correcting narrow dental arch

Info

Publication number: CN212661978U
Application number: CN202020733872.XU
Authority: CN
Inventors: 马宁; 郑旭; 张晓溪
Original assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Current assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-03-09
Anticipated expiration: 2030-05-07

Abstract

The utility model provides an arch expansion auxiliary arch for correcting dental arch stenosis, which comprises an auxiliary arch wire and two free traction hooks arranged on the auxiliary arch wire, wherein the cross section of the auxiliary arch wire is square; the free towing hook comprises a matching block and a hook connected with the lower side surface of the matching block, a U-shaped open slot in sliding fit with the auxiliary arch wire is arranged on the matching block, and the opening of the U-shaped open slot faces the oral cavity; the bending direction of the hook is opposite to the direction of the opening, and the hook is used for hooking on the main arch wire. The utility model is used for correcting the constrictive arch that expands of dental arch and assisting the arch and connect on main arch wire, when narrowly carrying out just abnormal arch expansion treatment to the dental arch, should expand the arch and assist the arch and can help main arch wire to play the effect that expands the arch better to can improve effectively and expand the arch effect, solve better and expand the relatively poor problem of arch effect when only having main arch wire.

Description

Auxiliary arch for expanding arch for correcting narrow dental arch

Technical Field

The utility model relates to the technical field of oral medical instruments, in particular to a dilating auxiliary arch for correcting the stenosis of dental arch.

Background

The narrow dental arch refers to the malunion deformity of the upper and lower jaw caused by too narrow dental arch due to no obvious abnormal development of the upper and lower jaw and too lingual or lingual inclination of teeth. The maxillary dental arch may be a simple maxillary dental arch stenosis, or a mandibular dental arch stenosis or both upper and lower dental arch stenosis. Maxillary arch stenosis is often accompanied by retroocclusions, and mandibular arch stenosis is sometimes accompanied by retroocclusions due to upper arch stenosis. Mandibular arch stenosis is often accompanied by condensation of the posterior teeth, resulting in poor occlusal contact and affecting the chewing function. The upper and lower arch stenosis usually has the clinical manifestations of crowding of the dentition and poor occlusion of the posterior teeth. To correct the malocclusion and improve the bite function, orthodontic arch expansion treatment is usually performed on dental arch stenosis.

However, in the prior art, when orthodontic arch expansion treatment is performed on dental arch stenosis, the first method is to expand the dental arch stenosis only by using the main arch, but the arch expansion effect is poor, and particularly, the arch expansion effect is not ideal for severe dental arch stenosis. The second method is to make auxiliary devices for expanding the arch, such as a W-shaped arch, a four-corner expanding spring, a spiral expanding device and the like, on the palatal side of the dental arch, and weld the auxiliary devices with a belt ring and then bond the auxiliary devices into the mouth for use; the device has good arch expanding effect, but is large, influences pronunciation and oral hygiene maintenance on the palate, is complicated to operate and is not easy to place on the lower jaw. The third method is bending the auxiliary arch, generally selecting a straight stainless steel round wire, bending the hooks at two ends according to the required arch expanding position and the accurate length in the mouth, and then placing the hooks on the main arch wire to play the role of expanding the arch; the auxiliary arch has good effect, but the defects of comparison error, inaccurate bending, time-consuming bending and the like exist in clinically comparing the specific position and length of the dental arch and bending the hook. Therefore, how to improve the arch expansion effect when orthodontic arch expansion treatment is carried out on the narrow arch of the tooth, simplify the clinical operation and increase the comfort of the patient becomes a technical problem which needs to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a expand bow and assist bow for correcting the stenosis of dental arch to solve the above-mentioned technical problem among the prior art, both improved and carried out just abnormal expansion bow effect when treating to the dental arch, can simplify clinical operation again, increase patient's comfort level.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an arch-expanding auxiliary arch for correcting the stenosis of a dental arch comprises an auxiliary arch wire and two free traction hooks arranged on the auxiliary arch wire, wherein the cross section of the auxiliary arch wire is square; the free towing hook comprises a matching block and a hook connected with the lower side surface of the matching block, a U-shaped open slot in sliding fit with the auxiliary arch wire is arranged on the matching block, and the opening of the U-shaped open slot faces the oral cavity; the bending direction of the hook is opposite to the direction of the opening, and the hook is used for hooking on the main arch wire.

Preferably, the hook and the mating block are formed as a unitary structure.

Preferably, the auxiliary arch wire is made of stainless steel, TMA or nickel titanium.

Preferably, the mating block is of rectangular configuration.

Preferably, the auxiliary arch wire cross-section square has a side length of 0.016 inches, 0.017 inches, 0.018 inches, 0.019 inches or 0.020 inches.

The beneficial effects of the utility model reside in that:

the utility model discloses a support groove ligature fixed for correcting the constrictive arch that expands of dental arch, it is when using, the selection needs to be placed in the oral cavity and expands the position that the arch was assisted to the arch, than good length to do well the mark, then will assist the arch wire of arch and place outside the oral cavity, will freely draw the hook with drawing the hook pincers to press from both sides tightly to assisting the arch wire in mark department, will make expand the arch of good and assist the arch, utilize freely draw the hook to hang on the main arch wire in the oral cavity through the couple hook, the middle part position of assisting the arch wire utilizes ligature silk and well incised tooth's support groove ligature, can exert the effect of expanding the arch. Therefore, the utility model discloses an it connects on main arch wire to expand the arch, when narrowly carrying out just abnormal arch expansion treatment to the dental arch, the utility model discloses an expand the arch and assist the arch and can help main arch wire to play the effect that expands the arch better to can improve effectively and expand the arch effect, solve better when only having main arch wire expand the relatively poor problem of arch effect, and simplify clinical operation, increase patient's comfort level.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments are briefly introduced below, and the detailed description of the embodiments of the present invention is further described with reference to the drawings, wherein

Fig. 1 is a schematic view of an auxiliary arch for correcting stenosis of a dental arch according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic view of a free hook according to an embodiment of the present invention;

fig. 4 is a schematic view of an expanded auxiliary arch for correcting dental arch stenosis according to an embodiment of the present invention when used in an oral cavity.

In the drawings, the reference numbers:

11. an auxiliary arch wire 21, a free towing hook 22, a matching block 23 and a hook

24. U-shaped open slot 31 and main arch wire

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to specific embodiments.

As shown in fig. 1 to 4, an auxiliary arch for correcting stenosis of dental arch provided by the embodiment of the present invention includes an auxiliary arch wire 11, two free towing hooks 21 disposed on the auxiliary arch wire 11, wherein the cross section of the auxiliary arch wire 11 is square; the free towing hook 21 comprises a matching block 22 and a hook 23 connected with the lower side surface of the matching block 22, the matching block 22 is provided with a U-shaped open slot 24 in sliding fit with the auxiliary arch wire 11, and the opening of the U-shaped open slot 24 faces the oral cavity; the hook 23 is bent in a direction opposite to the direction of the opening, and the hook 23 is used for hooking on the main arch wire 31.

The embodiment of the utility model provides a be used for correcting narrow arch of expanding of dental arch and assist bow, it is when using, the selection needs to be placed in the oral cavity and expands the position that the arch was assisted, than good length, and make the mark, then will assist bow arch wire 11 to place outside the oral cavity, will freely draw hook 21 with draw the hook pincers to press from both sides tightly to assisting on the bow arch wire 11 in mark department, with the arch of expanding that makes and assist the arch, utilize freely draw hook 21 to hang on the main arch wire 31 in the oral cavity through couple 23 hook, the middle part position of assisting the bow arch wire utilizes ligature silk fixed with the support groove ligature of well incisor, can exert the effect of expanding the arch. Therefore, the utility model discloses an it connects on main arch wire to expand the arch, when narrowly carrying out just abnormal arch expansion treatment to the dental arch, the utility model discloses an expand the arch and assist the arch and can help main arch wire to play the effect that expands the arch better to can improve effectively and expand the arch effect, solve better when only having main arch wire expand the relatively poor problem of arch effect, and simplify clinical operation, increase patient's comfort level.

Specifically, the hook 23 and the mating block 22 form an integrated structure, so that the strength of the free towing hook can be effectively improved, and the mass production is facilitated.

It may be preferred that the auxiliary arch wire 11 be made of stainless steel, TMA or nickel titanium so that the practitioner may choose to use an auxiliary arch wire 11 of a different material depending on the particular situation of the arch.

Specifically, the mating block 22 is a rectangular structure.

Further, the secondary arch wire cross-section square has a side length of 0.016 inch, 0.017 inch, 0.018 inch, 0.019 inch or 0.020 inch, thereby allowing the surgeon to select different sizes for different arch expansion difficulties.

After the dentition of a patient is simply aligned by the main arch wire, the upper jaw arch still has stenosis, the main stenosis part is in the second premolar and the first molar area, the auxiliary arch wire 11 is used for comparison on teeth in the oral cavity, the far middle 2mm part of the second premolar on the upper jaw at two sides is marked, the matching block 22 of the free traction hook 21 is clamped on the marked part of the main arch wire 31 by using the traction hook clamp outside the mouth, and the auxiliary arch wire 11 at the far end of the free traction hook is cut off outside the mouth after the comparison position in the mouth is correct again; hooking the manufactured auxiliary arch for expanding the arch to the far middle of the second premolar on two sides of the upper jaw of the main arch wire 31 in the mouth by utilizing the hook 23 of the free traction hook 21; the middle of the auxiliary arch wire and the bracket of the upper middle incisor can be ligated and fixed by using the ligation wire, so as to prevent the front part of the auxiliary arch wire from protruding and pressing the upper lip. After the arch expanding auxiliary arch is fixed on the main arch wire in the mouth, the arch expanding auxiliary arch and the main arch wire can play the role of arch expanding.

The expansion bow auxiliary bow provided by the embodiment of the utility model is fixed by the free traction hook 21, thereby being convenient for the operation of a doctor and saving the operation time beside a chair; meanwhile, the auxiliary arch for expanding the arch can be accurately placed at a proper position according to the requirement, and the effect of expanding the arch is good; the auxiliary arch for expanding the arch has a simple structure, can reduce discomfort and foreign body sensation of a patient, and is beneficial to maintenance of oral hygiene; moreover, the auxiliary arch for expanding arches with different sizes and different materials can be selected, so that the requirements of expanding arches with different degrees and different difficulties can be better met.

The above are only preferred embodiments of the present invention, and it should be noted that these examples are only used for illustrating the present invention and not for limiting the scope of the present invention, and after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalents also fall within the scope defined by the claims attached to the present application.

Claims

1. An arch-expanding auxiliary arch for correcting the stenosis of a dental arch is characterized by comprising an auxiliary arch wire and two free traction hooks arranged on the auxiliary arch wire, wherein the cross section of the auxiliary arch wire is square; the free towing hook comprises a matching block and a hook connected with the lower side surface of the matching block, a U-shaped open slot in sliding fit with the auxiliary arch wire is arranged on the matching block, and the opening of the U-shaped open slot faces the oral cavity; the bending direction of the hook is opposite to the direction of the opening, and the hook is used for hooking on the main arch wire.

2. The expandable auxiliary arch for correcting dental arch stenosis of claim 1, wherein the hook and the mating block are formed as a unitary structure.

3. The expanded arch auxiliary arch for the correction of dental arch stenosis of claim 1, wherein the auxiliary arch wire is made of stainless steel, TMA or nickel titanium.

4. The expandable auxiliary arch for correcting dental arch stenosis of claim 1, wherein the mating block is of rectangular configuration.

5. The expandable auxiliary arch for the treatment of stenosis in an arch of teeth of any of claims 1 to 4 wherein the square cross-section of the auxiliary arch wire has a side length of 0.016 inch, 0.017 inch, 0.018 inch, 0.019 inch or 0.020 inch.