WO2006098557A1

WO2006098557A1 - Dentition orthodontic device and orthodontic using the same

Info

Publication number: WO2006098557A1
Application number: PCT/KR2006/000709
Authority: WO
Inventors: Ju Young Lee
Original assignee: Ju Young Lee
Priority date: 2005-03-12
Filing date: 2006-02-28
Publication date: 2006-09-21
Also published as: KR20060099554A; JP2008532614A

Abstract

This invention relates to dentition orthodontic device and orthodontic using the same. This invention aims to minimize the discomfort of the patient during the treatment, to resolve the aesthetic problem, to reduce the encumbrance for replacing the prosthesis and the cost, and to allow inexperienced dentists to practice the correctional treatment . The dentition orthodontic device in this invention placed on the area of the lost tooth (30) prevents the adjacent teeth (10a, 10b) from inclination, corrects the already inclined teeth, and it is composed of a cylinder (310) with one end open, a spring (330) inserted inside the cylinder, and a press (320) which exerts the pressure from the spring. One end of the above press (320) can be opened to allow the spring (330) to be inserted.

Description

Dentition orthodontic device and orthodontic using the same

Technical Field

This invention relates to dentition orthodontic device and orthodontic using the same for preventing tooth inclining towards lost tooth on either upper or lower jaw after leaving the area for a long time.

Background Art

The lost tooth, due to extraction for treatment or for any other reasons, result in spaces causing teeth to incline. Especially, loss of molars such as true molars or false molars cause nearby teeth to incline towards the lost area and result in spaces between the inclining teeth and the adjacent teeth, and they brings the following problems.

Figure 1 illustrates the traditional orthodontic method, and the tooth (10) consists of the crown (11) projecting out of the gum (20) and the root (12) from the gum (20) to the pubis. When the loss occurs, the space (30) between the first tooth (10a) and the second tooth (10b) forms, and the above two teeth become inclined toward the space. That is, the crowns (11) of the first tooth (10a) and the crown (11) of the second tooth (10b) become closer, and the aperture (40) between the first tooth (10a) or the second tooth (10b) and the adjacent tooth (10c) occurs.

These apertures (40) leave spaces for food and gxve the inconvenience m aesthetic aspect. Also, when the first tooth (10a) and the second tooth (10b) become inclined towards the lost tooth (30), recovering the prosthesis becomes difficult, the lifetime of the prosthesis is shortened because of the periodontal disease, and implanting becomes difficult, therefore the treatment becomes complicated. To reduce such problems, an extended screw was set up across several teeth and periodontal tissues to set up the inclined teeth by tightening the screw. However, this method had encumbrance of having the patient to tighten the screw by oneself, and gave the discomfort due to the widely spread fixture. It also had the limitations of setting up the teeth straight due to the sided direction of pressure.

Figure 1 also shows orthodontics using the coil spring (140) instead of the screw to overcome the encumbrance of the patient. Around the lost tooth (30), tubes (120b) are fixed to the second tooth (10b) and the adjacent teeth (10b) using brackets (121), another tube (120a) is fixed on the first tooth (10a), and the above tubes (120a, 120b) are connected through the space so that the arch wire (130) is movable. A coil spring (140) having elastic pressure towards the first (10a) and the second (10b) tooth is inserted, which is fixed with tubes (120a, 120b) . Therefore, the inclined first (10a) and second (10b) teeth are elastically pushed in the opposite direction, resulting in correction of the teeth. This method, compared to the above screw retained prosthesis method, maintains steady and consistent pressure to the teeth without any patient's operation, reduces the encumbrance of the patient.

However, even with the above coil spring (140) orthodontics, the tubes (10a, 120b) are fixed on the lip side and the tongue side of the teeth (10a, 10b), and there still exist limitation on the correction since the elasticity is sided on either end. Also, the tubes (120a, 120b) , bracket (121), arch wire (130) and the coil spring(40) are widely spread over the oral cavity and expose themselves, therefore they still give the discomfort and trouble in aesthetic aspect, similar to the screw retained prosthesis.

On the other hand, Figure 2 and Figure 3 illustrate other example of the traditional orthodontics .

That is, this technique reduces the number of parts which were causing the discomfort. In detail, one pair of parallel parts (231, 231) , supporting part (232) supporting a tooth

(10b) attached to the crown (11), U type wire (230), band

(21) with tubes (220) for inserting the parallel parts are places around the area of the lost tooth (30) . Also, the above parallel parts (231) are placed with coil spring (140) so that they impose the elasticity against the above band (21) and the supporting part (232) . Therefore, due to the elasticity of the above coil spring (24), the teeth (10a, 10b) around the area of the lost tooth (30) are pushed away from the area, resulting in correction of the incline. Also, according to this technique, since the teeth (10a, 10b) are pressed away from the area of the lost tooth (30) from the lip side and the tongue side of the teeth, more uniform correctional pressure is imposed and more accurate correction is possible, the prosthesis is limited to the area of the lost tooth (30) , and the discomfort is reduced. The orthodontics in this example, however, changes the point of elastic pressure by the coil spring (24) on to the first (10a) and the second (10b) teeth depending on the gradient of the teeth, therefore, cannot apply accurate correctional pressure. For this reason, it requires replacement of the band (210) and tubes (220) and cost arises as time goes by. In addition, during the course of the practice, it is difficult to place the u type wire (230) on the area of the lost tooth (30) by inserting parallel parts (231) of the U type wire (230) and the coil spring (24) at the same time The discomfort is reduced but still exist due to the characteristics of the exposed coil spring (24), parallel parts (231), and the band (210) including the tubes (230) , and the scraps tend to remain. Also, this treatment can be practiced only by the experienced dentists, causing higher costs for the patients. Disclosure of the Invention

This invention is purposed on solving the existing problems of the orthodontics. It tries to minimize the discomfort and the inconvenience of the patient, to solve the aesthetic problem, to reduce the encumbrance and the cost during the treatment, and to allow any dentists without prior experience to practice the treatment.

Advantageous Effects

According to the invention, any dentist without professional knowledge can practice such treatment using the prosthesis, and it is effective in terms of practice duration, treatment duration, and the cost.

Also, since the dentition orthodontic device (300) is completely inserted on the area of the lost tooth (30) and the spring (330) is not exposed, it can satisfy the patient's discomfort, inconvenience, and aesthetic desire.

Also, the problem of the reduced space of the area of the lost tooth (30) due to the long time negligence can be solved for inserting artificial tooth, and it can prevent food from getting in the spaces around and on the area of the lost tooth (30) .

Brxef Description of the Drawings

Figure 1 shows an example of the traditional orthodontics. Figure 2 shows another example of the traditional orthodontics .

Figure 3 shows the ichnography of Figure 2. Figure 4 shows the break down of the example 1 for the prosthesis of this invention.

Figure 5 shows the treatment of the example 1 for the prosthesis of this invention.

Figure 6 shows the break down of the example 2 for the prosthesis of this invention.

Figure 7 shows the ground view of the example 2 for the prosthesis of this invention. Figure 8 shows the treatment of the example 2 for the prosthesis of this invention

Figure 9 shows the side view of the holder of the example 2 for the prosthesis of this invention.

Figure 10 shows how the prosthesis is inserted on the area of the lost tooth according to the example 2 of this invention

Figure 11 shows how the prosthesis is glued on the area of the lost tooth according to the example 2 of this invention

Figure 12 shows the cross-sectional view for the prosthesis of this invention. Description of the elements in the drawings

10, 10a, 10b : tooth, 30 : area of lost tooth, 300 : dentition orthodontic device, 310 : cylinder, 320 : pres 330 : spring,

Best Mode for Carrying Out the Invention

To achieve the above stated purposes, this invention consists of the prosthesis placed on the area of the lost tooth for preventing inclines of the adjacent teeth: one open ended cylinder: the spring to be inserted inside the cylinder: and the press to be inserted inside the cylinder for imposing the elastic pressure of the spring inserted and preventing the spring from escaping the cylinder.

Also, the invention specifies the stage where the prosthesis, which consists of the cylinder with one side open ended, the spring to be inserted inside the cylinder, and the press movable inside the cylinder preventing the spring from escaping, is inserted on the area of the lost tooth; and the stage where the prosthesis is glued to one of the teeth using the dental glue after determining the point of pressure

According to this invention, after the stage of gluing the prosthesis, additional stages can be included such as the stage where the degree of correction is examined; the stage where the prosthesis is replaced from the area of the lost tooth if the point of pressure must be corrected; and the stage where new point of pressure is determined and the prosthesis is glued to one of the teeth; The features and the advantages of this invention become clear with more detailed explanation based on the attached figures. Before that, the terms and words must be interpreted as meanings and concepts that the inventor wishes to define to best explain the invention.

Practical example 1

Referring to Figure 4 and Figure 5, the practice example 1 will be explained.

The prosthesis in this example (300) (as 300a to distinguish against those of other examples) is placed on the area of the lost tooth to prevent the incline of the adjacent teeth and to correct the already inclined teeth, and it consists of the cylinder (310) , the spring (330) to be inserted in the above cylinder, and the press (320) on which the elastic pressure is exerted while preventing the spring from escaping the cylinder. The oral cavity has the environment of almost 100% humidity, high exchange pressure

(maximum of 470Mpa) during chewing, rapid temperature change

(maximum of 65 degrees in Celsius for instant change) , close contact with bionic organism, frequent occurrence of side effects such as over-sensitiveness, and residence of various bacteria and germs, Therefore, the prosthesis placed inside the oral cavity must be made of special materials, and the best materials for the purpose of treatment are being studied seamlessly.

The prosthesis of this invention can be made of various materials within the limitation of the application.

To inspect the detailed components of this prosthesis, the above spring (33) must impose strong elastic pressure on the teeth (10a, 10b) to straighten up the teeth root (12), and furthermore, to hold the whole teeth to stay up straight, and is recommended to be made of compressed coil spring.

The above cylinder (31) must have the cylindrical shape with one side end to be open to insert the spring (33), must be made of materials that are highly anti-corrosive, harmless, and polymeric plastic. When the spring (33) is inserted inside the cylinder (310) , one end of the spring (330) is supported by the close ended side of the cylinder (31) , and the other end of the spring (330) must have the elasticity against the open ended side of the cylinder (310) .

The above press (320) must be inserted in order to slide along the axis of the cylinder (310) from the open ended side of the cylinder (310) and to prevent the spring (330) from escaping the inner space (311) of the cylinder (310) . The press (32) also exerts the elastic pressure to the open ended side of the cylinder (310) . Also, it is important that the press (320) is inserted so as not to expose the spring (330) to the outside of the cylinder (310) even with the presence of the elastic pressure. The spring (330) is in the form of compressed coil spring, it is likely to have substances due to spaces created by the spring pitch. Therefore, it is recommended that the spring (330) must be exposed minimally to reduce the discomfort of the patient.

As stated above, when the dentition orthodontic device (300) is inserted on the area of the lost tooth (30), the elastic pressure of the above spring (330) imposes on both end, therefore the close ended side of the cylinder (310) and one end of the press (320) directly touch the crowns (11) of the teeth (10a, 10b) . In order to reduce the damage of crown

(11) and to prevent slipping of the prosthesis, the cylinder (310) and the press (320) must be made of polymeric plastic which has a certain degree of ductility.

That is, the above spring (330) must be longer than the area of the lost tooth (30) , and inserted in the inner space (311) of the cylinder (310), and when the above press (320) is inserted to the cylinder (310) , the spring (330) is compressed by the press (320) and inserted completely. At this point, as shown in Figure 5, the dentition orthodontic device (300a) in this example can be inserted on the area of the lost tooth (30) . When inserting the dentition orthodontic device (300a) of this example on the area of the lost tooth (30) , the above cylinder (310) , pliers shaped holder (400) (Refer to Figure 9) can be used to hold the circumference plane of the cylinder. As shown in Figure 5, the above holder (400) can tighten the inner plane of the cylinder (310) and the circumference plane of the press (320) so that the dentition orthodontic device (300) can be inserted on the area of the lost tooth (30) while maintaining the elasticity of the spring (330) .

As stated above, when the dentition orthodontic device (300a) is inserted on the area of the lost tooth (30) , the elastic presser (that is, restoring power) of the compressed spring (330) applies on the close ended side of the cylinder (310) and the press (32) . The elasticity of the spring (330) can be adjusted on the decision of the dentist by applying the length of the spring (330) .

Practical example 2

Referring to the Figure 6 and Figure 12, the practical example 2 is explained. The dentition orthodontic device (300) (named 300b in order to distinguish the prosthesis of this example from that (300a) of example 1) is same with that (300a) of example 1 except that the structure of the press (320) is different.

That is, as shown in Figure 6, Figure 7, and Figure 12, the press (320) as with the cylinder (310) , has open inner space (322) , and the press (320) is inserted into the cylinder (310) so as to have the press's (320) inner space is faced with that of that cylinder (310) . Therefore, the inserted spring (330) in the above cylinder (310) is actually in the inner space of the press (320) , resulting in the elastic pressure on both the press (320) and the cylinder

(310) .

Since the press (320) has the inner space (322) that the spring (330) can be inserted, the above spring (330) can be compressed while it is in the inner space (330) of the press

(320) . As shown in the Figure 7, since the press (320) can be assembled while compressing the spring (320) inside its inner space (322) , it is easier for the assembling process, it prevents the escaping of the press (320) , and it effectively reduces the exposure of the spring (330) . Also, as shown Figure 8, when inserting the dentition orthodontic device (300b) in this example on the area of the lost tooth (30), as the same with the previous example, holding tool such the holder (400) in Figure 9 can be used to hold the cylinder (310) , and, at the same time, the elasticity of the spring (330) can be maintained.

For the cases of the dentition orthodontic device (300) illustrated in the above examples, since there is no exposure of the spring (330) when inserted on the area of the lost tooth and the inner space (311) of the cylinder (310) is blocked by the press (320) , the dentition orthodontic device

(300) is free from the substances. Also, the cylindrical structure of the dentition orthodontic device (300) occupies most of the spaces created by the area of the lost tooth (30) , and reduces the chance of substances stuck in the area of the lost tooth (30) .

Next, the orthodontics using the invented dentition orthodontic device (300) is explained, and mainly the prosthesis (300b) of the example 2 is the target of the explanation.

First, the dentition orthodontic device (300) is assembled before it is inserted on the area of the lost tooth (30) , and the pliers shaped holder (400) shown in Figure 9 can be used to maintain the compressed elasticity of the spring (330) . The above holder (400) , as shown in Figure 9, can be used as a strong holding tool since it has a rotating point in the middle of each bar, one end of each bar has a grip (411) attached, and the other end has lever (410a, 410b) of semicircle shape.

That is, the spring (330) is inserted into the cylinder (310) , the press (320) is inserted to the cylinder (310) while pressing the spring (330) while maintaining the elasticity of the spring (330) as shown in Figure 7. Since the holder (400) holds the circumference plane of the cylinder (410) , the holding pressure applies towards the inner space of the cylinder (310) resulting in frictional force between the inner plane of the cylinder (310) and the circumference plane of the press (320) to prevent the press

(320) from escaping the cylinder (310) by the elastic pressure of the spring (330) . Also, the semicircular groove of the above holder (400) can be magnetic so that it can ease the assembly of metal parts such as the above spring (330) .

As shown in Figure 10, while holding the dentition orthodontic device (300) of this invention with the holder (400) , the dentition orthodontic device (300) is inserted on the area of the lost tooth (30) so that it touches on both teeth (10a, 10b) .

As stated above, when the dentition orthodontic device

(300) of this invention is inserted on the area of the lost tooth (30) , using the elasticity of the spring (30) as the intermediary agent, the teeth (10a, 10b) contact with one end of the cylinder (310) and the press (320) exerting the correctional pressure, therefore, can stay straight up.

Next, as shown in Figure 11, the point of the elastic pressure can be determined based on the inclination of the above teeth (10a, 10b) , and the one end of the dentition orthodontic device (300) can be glued with the teeth around the area of the lost tooth (30) using the dental glue (B) .

That is, at this stage, the dentition orthodontic device

(300) is positioned using the holder (400) , and, by determining the pressuring point of the elasticity, the first

(10a) and the second (10b) is corrected. It is important to glue only one end of the dentition orthodontic device (300) to cope with the changes of the contact position between the dentition orthodontic device (300) and the crown (11) as the teeth (10a, 10b) become corrected.

The above dental glue (B) must be of superiorly adhesive materials since it contacts with the crown (11) and the dentition orthodontic device (300) .

Generally, the enamel, which is the top layer of the crown (11) , consists of more than 97% phosphatic calcium named Hydroxyapatite, has very high density, solidity, and mechanical intensity, and has very strong characteristics on chemicals. The enamel is hydrophobic, and combines easily with polymeric synthetic glue. Based on the above property of the enamel, hydrophobic dental glue (B) is used to glue the dentition orthodontic device (300 to the teeth.

On the other hand, according to the dentition orthodontic device (300) invented here, the next step after the gluing can include the stage of verifying the degree of correction of the teeth.

That is, when the above dentition orthodontic device (300) is fixed, correctional pressure is imposed on both teeth (10a, 10b) , as the inclined teeth are corrected, the fixed dentition orthodontic device (300) may apply the pressure in the wrong direction. Therefore, it must be observed periodically .

Based on these observation results, if it is necessary to modify the point of pressure of the dentition orthodontic device (300) , the dental glue (B) is removed, the dentition orthodontic device (300) is detached from the area of the lost tooth (30) , and another dentition orthodontic device (300) having the size applicable for the are of the lost tooth (30) is reinserted. As stated above, the prosthesis is glued using the dental glue (B) again to one of the teeth around the area. The above observation steps and modification stages can be repeated sequentially for several times depending on the degree of the correction.

Claims

WHAT IS CIAEMED IS:

1. The dentition orthodontic device (300) to prevent and to correct the inclination of the adjacent teeth (10a, 10b) near the lost tooth (30) :, which consists of the cylinder (310) with one sided open ended; the spring (330) to be inserted inside the cylinder, and, the press (320) which exerts the elastic pressure from the spring when inserted from the open end of the cylinder

2. As claimed in Claim 1; the dentition orthodontic device (300) , with the press (320) having inner space to allow the spring (330) to be inserted inside

3. Orthodontics using the prosthesis placed on the area of lost tooth (30) to prevent and to correct the adjacent teeth (10a, 10b) : which specifies

One step where the cylinder (310) with one side open ended, the spring (330) inserted inside the cylinder, and the press (320) exerting elastic pressure by the spring together are inserted on the area of the lost tooth; and another step where the point of pressure is determined based on the inclination of the above teeth and the prosthesis is glued to one of the teeth;

4. As claimed in Claim 3; Orthodontics which consist of;

One step where the inclination of the teeth is verified after the dentition orthodontic device (300) is glued on one of the teeth (10a, 10b) around the lost tooth (30); next step, where the dental glue (B) is removed, the prosthesis is detached from the area of the lost tooth, and another prosthesis applicable for the size of the area of the lost tooth is inserted; and the other step, where the prosthesis is glued on one of the teeth after examining the point of pressure of the prosthesis;