CN201123851Y - Long arm type molar tooth vertical spring line - Google Patents

Abstract

The utility model relates to a long arm type molar tooth is line of snapping upright, include: a lingual groovest abutment (lingual grooveest) for abutment against the elastic thread in the lingual grove of the first molar tooth; a loop (loop) for encircling and securing around the second large molar; a buccal branch abutment (buccal branch rest) for abutting against the elastic thread on the buccal side of the first large molar tooth; a reactivation area, which is an area between the first large molar and the second small molar; the force application lever is used for applying force to the second large molar tooth; and an arc which extends into and is fixed at the root of the second large molar tooth which is blocked from growing from the adjacent wall between the occlusal surface of the first large molar tooth and the occlusal surface of the second large molar tooth.

Description

Long Arm Molar Upright Elastic Wire

technical field

The utility model relates to a long-arm type molar upright elastic wire, which refers to a long-arm type molar upright elastic wire which utilizes the principle of leverage and can be formed quickly, saving time and material loss.

Background technique

According to statistics, about 3% of people may have ectopic impaction on the first molar of the upper jaw, and most of the impacted second molar on the lower jaw may be due to the abnormality of the lower jaw during orthodontic treatment. The first molar may be tilted backwards due to anchoring (Anchorage Preparation), or the shape of the tooth itself, or the insufficient length of the dental arch, which in turn may cause ectopic impaction on the second molar Phenomenon.

Generally, for the tilted molars in the traditional way, when the situation is not serious, use a brass wire to move the large molars to the distal side (referring to the back of the gums), or use a root elevator (elevator) to straighten the tilted molars. With the rapid advancement of dental medical technology, steel wires or rings are used to achieve the effect of molar straightening and correction.

Clinically, erupted and impacted large molars are common, which can easily cause damage to periodontal tissue, dental caries, and affect the integrity of the dental arch. Moreover, the moisture-proof treatment of the large molar area is not easy, which may easily lead to poor effect of the adhesion of the orthodontic appendages, and the device of the orthodontic ring (Band) is also not easy.

In view of this, the inventor of the utility model has previously studied a long-arm type molar upright elastic wire, which is made of a simple stainless steel round wire, and adopts the first type of lever principle, which can overcome the The large molars are not easy to be treated with moisture, which leads to poor attachment technique. Clinically, depending on the degree of inclination of the molars, the righting effect can be shown within two to five weeks. The details of the technology are disclosed in the United States Patent No. 5720611.

However, when implementing the aforementioned patents, often because the physicians who use this technology are inexperienced, the tissue of the patient will be damaged during the process of threading the steel wire, causing inconvenience.

Therefore, the utility model of the present utility model further improves the above-mentioned technology and develops a modified long-arm type molar upright spring wire, which uses the adjacent surface between the normal tooth and the inclined tooth occlusal surface to extend into and fix it. It can be implemented simply and achieve the effect of straightening the inclined teeth.

Contents of the invention

The main purpose of the utility model is to provide a long-arm type molar upright elastic wire, which uses the adjacent surface between the normal tooth and the occlusal surface of the inclined tooth to extend into and fix it, so as to achieve the purpose of straightening the inclined tooth.

In order to achieve the above purpose, the utility model provides a long-arm type molar upright elastic wire, including: a lingual groove support (lingual grooverest), which is used to support the elastic wire on the lingual groove of the first molar; One loop (loop), used to surround and fix around the second molar; one buccal bracket rest, used to support the elastic wire on the buccal side of the first molar rest ; a reactivating area (reactivating area), set in the area between the first molar and the second molar; a force lever, which is used to apply force on the second molar; and an arc, which is formed by the first molar The adjacent wall between the occlusal surface and the occlusal surface of the second molar protrudes into and fixes the root of the impacted second molar.

Compared with the prior art, the utility model adopting the above-mentioned technical solution has the following advantages: (1) it is more convenient to implement; (2) it will not harm the tissue; (3) it provides a Modified molar upright snap line.

Description of drawings

Fig. 1 is the appearance structure diagram of the long-arm type upright spring line;

Fig. 2A, Fig. 2B, and Fig. 2C are various variations of the long-arm type upright spring line of the present invention;

Figure 3 is a diagram of the equipment and equipment used;

Fig. 4 is the side view of partial impacted molar;

Figure 5 is a top view of the first molar;

Figure 6 is the needle holder clamping the arc-shaped front end and penetrating from the lingual side contact area;

Figure 7 is a picture of the straight elastic thread passing through the buccal side, and pulling it out with the No. 139 corrective forceps;

Fig. 8 is a drawing showing that the force applying lever passes through the buccal side;

Figure 9 is a view of the lingual groove resting in place;

Fig. 10 is a diagram showing that the force lever is tied to the canine teeth and the excess steel wire is cut off;

Figure 11 is a picture of occlusal interference caused by the arched area;

Figure 12 eliminates the arched arc region with the loop forming pliers, and simultaneously activates the upright snap line figure;

Figure 13 is a picture of the area where the arch has disappeared;

Figure 14 is a state diagram before activation;

Figure 15 is a state diagram after activation;

Fig. 16 is a result diagram of molar teeth after being straightened;

Fig. 17A and Fig. 17B are diagrams respectively showing the states of impacted molars before and after treatment.

Explanation of reference signs: 1-long arm type molar upright elastic line; 11-lingual groove support; 12-circle; 13-buccal appendage support; 14-reactivation zone; 15-force lever; 16-arc; 21-ligature wire; 22-stainless steel; 23-loop forming pliers; 24-139 correction forceps; 25-139 correction forceps; Wire clamp; 28-needle holder; 31-first molar; 32-second molar; 34-second premolar; 35-canine; 160-body part; 161-contact end.

Detailed ways

Please refer to FIG. 1 , which is a schematic view of the long-arm type molar upright elastic wire of the present invention. The long-arm type molar upright elastic wire 1 is made of stainless steel 22 and has different diameters, such as 0.018, 0.020, 0.022 inch and other specifications. The long-arm type molar upright elastic wire 1 includes: (A) It is used to support the long-armed molar upright elastic wire 1 on the lingual groove of the first molar 31; (B) is used to surround and fix around the second molar 32. Ring 12; (C) the buccal attachment support 13 used to support the long-arm type molar upright spring wire 1 on the buccal attachment of the first molar 31; (D) reactivation zone 14, The area between the first molar 31 (see FIG. 4 ) and the second small molar 34 (see FIG. 4 ); (E) the application lever 15 is used to exert force on the impacted second molar 32 (see FIG. 4 ). See Fig. 4); and (F) the arc 16 is extended into and fixed on the impacted second molar 32 by the adjacent wall between the occlusal surface of the first molar 31 and the occlusal surface of the impacted second molar 32 roots.

The long-armed molar upright elastic wire 1 of the utility model uses the principle of the first lever to make the original molars partially impacted and the crown on the proximal side exposed. Correct and moderate clamping can be done according to the seriousness of its molar tilt.

In addition, as shown in FIGS. 2A to 2C , the arc 16 can have many variations. In the drawings, the arc 16 is formed by connecting a body portion 160 and several contact ends 161. The body portion 160 It extends from the adjacent wall between the occlusal surface of the first molar 31 and the occlusal surface of the impacted second molar 32 and is fixed on the root of the second molar 32 by the contact end 161 . In addition to being connected to the main body portion 160, the contact end 161 can also be integrally formed during molding.

The equipment and instruments needed to correct the impacted molars when implementing the long-arm type vertical elastic wire 1 are as shown in Figure 3, which include:

ligature 21;

0.018, 0.020, 0.022 inch stainless steel wire 22;

Loop forming pliers 23;

No. 139 orthodontic forceps 24 and 25;

Ligation forceps 26;

cord cutters 27; and

Needle holder 28.

In order to make the review committee have a comprehensive understanding of the operation steps of the utility model, its various parts and structures, the detailed steps are described as follows with an embodiment of a clinical trial correction program for correcting large molars:

Measure the length A of one millimeter below the highest point of the outline of the first molar 31 lingual groove to the proximal side of the impacted second molar 32 (referring to the front side of the gum) on the X-ray film (as shown in Figure 4);

Measure the width B (as shown in Figure 5) from the lingual side to the buccal side of the first molar 31 on the model;

Use No. 139 orthodontic pliers to form the steel wire into the shape shown in Figure 1, where A' represents the distance between the most convex point of the lingual groove abutment 11 and the most convex point of the loop 12, and B' represents the The distance between the starting end of the loop 12 and the abutment 13 of the buccal appendage allows the wire to be shaped such that A=A', B=B'. If A<A', it is easy to make the elastic line jump out from the contact area in advance.

Clamp the arc 16 with a needle holder, extend from the adjacent wall between the occlusal surface of the patient's first molar 31 and the occlusal surface of the impacted second molar 32 (as shown in Figure 6), and then push the force lever 15 Pull it out with No. 139 orthodontic forceps (as shown in Figure 7 and Figure 8) and fix it on the root of the impacted second molar 32, so that the lingual groove of the long-armed molar upright elastic line rests on the 11 is correctly positioned on the first molar 31 (as shown in FIG. 9 ).

The force applying lever 15 is tied to the side of the appendage of the canine 35 near the gingiva and the excess steel wire is cut off (as shown in Figure 10).

If an arched area is formed between the canines 35 and the first molars 31 to cause the discomfort of the patient's occlusal interference, the loop-forming forceps 23 can be used to eliminate this phenomenon. Figures 11 and 12 illustrate the elimination of the arching process. Fig. 13 shows that after the loop forming pliers 23 are used, the arched area of the long-armed molar upright elastic wire has disappeared, and the elastic wire strength of the upright elastic wire can also be reassembled according to the needs of the patient's molar teeth. The activation area 14 is used for strengthening. For the situation, please refer to FIG. 14 (before activation) and FIG. 15 (after activation).

After correcting the above items (1)-(6), patients with corrected molars can see satisfactory orthodontic effects on the second largest molar 32 during the short-term treatment period (about 2 to 5 weeks) (as shown in the figure 16). From the arrangement of premolars shown in Figure 17A and the arrangement of molars after correction shown in Figure 17B, it can be seen that there is a great difference before and after correction, which shows that the upright elastic wire of the present invention plays a good role in the correction of molars effect.

In order to reduce the side effect caused by the fixed tension between the first molar 31 and the canine appendage 35, it is better to use a square thread such as 0.018×0.025 for the main thread, and tie all the appendages together , to form a good anchoring effect. After the teeth are straightened, it can be considered to adhere to the correction ring, and then adjust its angle. When receiving the treatment of the vertical elastic thread for the first time, local anesthesia can be used to reduce the discomfort of the patient. Anesthesia can be omitted after proficiency.

Therefore, the long-arm type molar upright spring wire of the utility model has unique and innovative utility model characteristics, and breaks through the shortcomings of traditionally using elastic rings or brass wires due to time-consuming and ineffective effects, and compared with the background technology, the utility model The invention has the following advantages: (1) it is more convenient to implement; (2) it will not damage tissues; (3) it provides a modified molar upright elastic thread that can achieve the same effect.

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the protection scope of the present utility model.

Claims (3)

1. the upright snap the line of long-armed type molar is the second largest molar that is used for setting upright impaction, it is characterized in that, comprising:

One lingual developmental groove props up and leans on, and is used for propping up by the lingual developmental groove of this snap the line at first molar;

One loop is used for around around the also fixing second largest molar;

Attached thing of one cheek side props up and leans on, and is used for propping up by attached the thing of this snap the line in first molar cheek side;

The region of activation is arranged on first molar to the zone between second premolar again and again;

One application of force lever is to be used for the application of force at second largest molar; And

One arc is the second largest molar root that is stretched into and be fixed on impaction by the adjacent wall between first molar occlusal surface and second largest molar occlusal surface.

2. according to the upright snap the line of long-armed type molar of claim 1, it is characterized in that: described arc more comprises body and several contact jaws, and described contact jaw is to be connected with body.

3. according to the upright snap the line of long-armed type molar of claim 1, it is characterized in that: described arc more comprises body and several contact jaws, and described contact jaw is integrally formed with body.

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