JP2009285061A - Wire retainer for orthodontic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire retainer for orthodontic which binds teeth in a wide range to allow them to move freely and does not cause sink. <P>SOLUTION: A wire retainer for orthodontic is worn on an upper teeth row 10a after an orthodontic treatment is over to retain the upper teeth row 10a, and is equipped with a retainer body 2a which has: a reverse side correspondence part 11a for corresponding to a reverse side 25a of the upper teeth row 10a; a surface correspondence part 12a corresponding to a surface 26a of the upper teeth row 10a; and a molar correspondence part 13a which joins the surface correspondence part 26a and the reverse side correspondence part 25a and is wound around a third molar 40a. The retainer main body 2a encircles the upper teeth row 10a. The retainer is provided with a preventive material 17a which extends from the retainer body 2a, is engaged with the upper teeth row 10a, and prevents the retainer body 2a from sinking. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an orthodontic wire retainer, and more particularly to an orthodontic wire retainer that is attached to an dentition during a period until the dentition is hardened after orthodontic treatment is performed. is there.

  After the orthodontic treatment is performed and the teeth are moved, the dentition (bones around the teeth) is not solidified and is in an unstable state. For this reason, if it is left as it is after orthodontic treatment, the dentition returns to the state before correction due to a so-called “reverse” phenomenon. In order to prevent this reversal, it is necessary to attach an orthodontic retainer to the dentition and maintain the tooth after orthodontic treatment (after movement) while allowing a certain degree of free shaking of the tooth. By using this orthodontic retainer for a long period of time, the dentition is fixed in the post-correction state.

  An example of an orthodontic retainer is shown in FIG. 5 (Patent Document 1). That is, the metal wire 51 disposed along the front surface of the dentition 50 is made to have an extension portion 52 that extends to the back surface of the dentition 50 at its end, and this extension portion 52 is made of a polyepoxy compound or the like. It is firmly fixed by a synthetic resin base 53 and matches the palate. This orthodontic retainer is of a so-called wraparound type that surrounds the entire circumference of the dentition 50.

  However, in the conventional retainer shown in FIG. 5, there is a synthetic resin base 53 having a relatively large thickness in the palate. For this reason, there is not only a foreign object feeling in the mouth during wearing, but also has a drawback that it is difficult for the base 53 to talk because the movement of the tongue is obstructed. Furthermore, since the base 53 is present in the palate, it is difficult to use it during meals, so it is often removed before meals. For this reason, there is a problem that the orthodontic retainer cannot be continuously mounted and the teeth cannot be stably fixed.

Therefore, in order to solve the above problems, an orthodontic wire retainer shown in FIG. 6 has been proposed (Patent Document 2). This orthodontic wire retainer includes a first metal wire 61 disposed along the back surface of the dental row 50 and a second metal wire 62 disposed along the front surface of the dental row 50. It is welded to the third metal wire 63 fitted between the premolars 30 and the premolars 30 or between the premolars (premolars) 30 and the molars (molars) 40 to elastically hold the dentition. An annular bridge 64 is formed, and the tooth row 50 is sandwiched by the annular bridge 64. Further, a reinforcing member 65 extending from the first metal wire 61 along the tooth occlusal surface is provided. Accordingly, the orthodontic retainer can be configured with only the wire, and the base 53 made of synthetic resin can be omitted. Therefore, compared to the conventional orthodontic wire retainer shown in FIG. There is little sense of foreign matter inside, and it is less likely to become an obstacle to conversation. In addition, there is an advantage that continuous use is possible without having to remove it before eating.
U.S. Pat. No. 4,725,230 No. 1-333052

  However, since the orthodontic wire retainer of FIG. 6 is not a so-called wraparound type that surrounds the entire circumference of the dentition, the teeth are firmly fixed in a narrow range. For this reason, a certain degree of free shaking of the tooth could not be allowed, and the tooth could not be moved freely. Further, the reinforcing member 65 is disposed along the occlusal surface from the inside.

  In view of the above problems, the present invention provides an orthodontic wire retainer that can freely move a tooth by restraining the tooth in a wide range and that does not sink.

  The orthodontic wire retainer of the present invention is a dental retainer wire retainer that is attached to the upper dentition after orthodontic treatment and holds the upper dentition, and corresponds to the rear surface of the upper dentition. A portion corresponding to the surface of the upper dentition, and a portion corresponding to the molar that is wound around the molar on the back side by connecting the surface corresponding portion and the back surface corresponding portion. A retainer body that surrounds the entire circumference of the dentition is provided, and a preventive material that extends from the retainer body and is locked to the upper dentition to prevent the retainer body from sinking is provided.

  Further, there is a dentition holding wire retainer that is attached to the lower dentition after orthodontic treatment and holds the lower dentition, and a lower surface corresponding portion corresponding to the rear surface of the lower dentition, and the lower teeth A front surface corresponding portion corresponding to the front surface of the row, a front surface corresponding portion and a back surface corresponding portion connected to each other and a molar corresponding portion wound around the back molar, and the entire lower tooth row A retainer body that surrounds the circumference is provided, and a preventive material that extends from the retainer body and is locked to the lower tooth row to prevent the retainer body from sinking is provided.

  The orthodontic wire retainer of the present invention has a so-called wraparound type retainer that surrounds the entire circumference of the dentition because the back surface corresponding portion and the front surface corresponding portion are connected via the molar corresponding portion. It can be composed of only one wire. That is, the synthetic resin base required in the conventional wraparound type retainer can be omitted. Moreover, since at least one prevention material extending from the retainer body is provided, the retainer body can be fixed from the occlusal surface side.

  A reinforcing portion disposed along the back surface of the lower dentition can be provided on the occlusal surface side from the back surface corresponding portion. Thereby, a lower tooth row | line | column can be supported by two places with a predetermined dimension along a height direction in cooperation with a back surface corresponding | compatible part and a reinforcement part.

  The preventive member includes an extending portion extending from the retainer main body, and a locking portion extending from the extending portion and locking to a part of the dentition, and the locking portion is in a non-contact state with the counterpart dentition. It can arrange so that.

  The back surface corresponding portion, the front surface corresponding portion, and the molar corresponding portion use a wire material having a circular cross section, and the back surface corresponding portion, the front surface corresponding portion, and the molar corresponding portion can select wire materials having various diameters. Can do. That is, the diameter of the desired position can be increased or decreased. For example, the diameter dimension of the wire can be reduced at a position that is easily visible from the outside, and the diameter dimension of the wire can be increased at a position that should be high in strength.

  Protrusions are formed on the surface of the teeth, and an engaging part that curves toward the cervical part is provided on the surface corresponding part and / or the molar corresponding part, and this engaging part is attached to the dentition so as to embrace the protruding part. Can be possible. Thereby, a wire can be hold | maintained at this projection part.

  In the orthodontic wire retainer of the present invention, the wrap-around type retainer can be constituted by only one wire, and therefore the teeth can be freely restrained and moved freely in a wide range. In addition, there are advantages that there is little sense of foreign matter in the mouth, conversation is easy, and there is no need to remove it during meals, making it easy to wear continuously. For this reason, a tooth | gear can be stably hold | maintained in the position after correction | amendment, and a backward return can be prevented. In addition, since the retainer body can be fixed from the occlusal surface side by the preventive material, the retainer body can be prevented from sinking, and a stable holding function can be exhibited over a long period of time.

  If the lower tooth row is supported in cooperation with the back surface corresponding portion and the reinforcing portion, the strength can be improved and the durability can be improved. Further, the tooth holding function can be further improved.

  When the locking part is arranged so as to be in non-contact with the mating dentition, the locking part does not get in the way even when meshed at the time of wearing, and it becomes comfortable at the time of wearing, making it easier for the user to wear it. It will be a thing.

  In the back surface corresponding part, the front surface corresponding part, and the molar corresponding part, if it is possible to select wire materials of various diameter dimensions, the desired position can be thinned or thickened. Since it is inconspicuous and friendly to the mouth, it is possible to reduce the burden on the user when wearing, and there is an advantage that the wire is easily bent and processed. At the same time, it is possible to maintain the durability by increasing the thickness of the portion where strength is required. Furthermore, the material can be reduced, and the cost can be reduced.

  When mounted on the dentition so as to embrace the protrusion formed on the cheek side of the tooth, the wire can be held by this protrusion so that the wire can be kept in close contact with the tooth surface over a long period of time. And can hold the teeth.

Hereinafter, embodiments of an orthodontic wire retainer and a mounting method thereof according to the present invention will be described with reference to the drawings.

  FIG. 1 shows a perspective view of a pair of orthodontic wire retainers according to an embodiment of the present invention. That is, FIG. 1 shows an orthodontic wire retainer that holds the upper dentition 10a after correcting the upper dentition 10a and moves the corrected tooth, and corrects the lower dentition 10b. This figure shows an orthodontic wire retainer that is mounted after the teeth to be corrected are moved to hold the lower dentition 10b. The retainer of the present invention is a so-called wraparound type retainer that surrounds the entire circumference of the dentition.

  The orthodontic wire retainer 1a includes a back surface corresponding portion 11a disposed along the back surface (tongue side) 25a of the upper tooth row 10a and a surface corresponding portion disposed along the surface 26a of the upper tooth row 10a. The retainer main body 2a is composed of 12a and a molar corresponding portion 13a that is connected to the back corresponding portion 11a and the front corresponding portion 12a and is wound around the molar 40a on both sides. The retainer body 2a is composed of only one wire. In this case, the back surface corresponding portion 11a, the front surface corresponding portion 12a, and the molar corresponding portion 13a are formed by, for example, fixing and integrating by brazing. . The back surface corresponding portion 11a, the front surface corresponding portion 12a, and the molar corresponding portion 13a cooperate to sandwich the upper dentition 10a from the front and rear and from the left and right, and cover the entire upper dentition 10a. In addition, a connecting member 14 is provided which is connected to the pair of molar corresponding parts 13a and 13a and is in close contact with the palate when worn.

  The orthodontic wire retainer 1b includes a back surface corresponding portion 11b disposed along the back surface (tongue side) 25b of the lower tooth row 10b and a surface disposed along the surface 26b of the lower tooth row 10b. A retainer body 2b is provided that includes a corresponding portion 12b and a molar corresponding portion 13b that is connected to the rear surface corresponding portion 11b and the front surface corresponding portion 12b and is wound around the molar teeth 40b on both sides. The retainer main body 2b is composed of only one wire. In this case, the back surface corresponding portion 11b, the front surface corresponding portion 12b, and the molar corresponding portion 13b are formed by, for example, fixing and integrating by brazing. . The back surface corresponding portion 11b, the front surface corresponding portion 12b, and the molar corresponding portion 13b cooperate to sandwich the lower dentition 10b from the front and rear and from the left and right with elasticity, covering the entire lower dentition 10b. . As shown in FIG. 2, the orthodontic wire retainer 1b is provided with a reinforcing portion 16 disposed along the back surface 25b of the lower tooth row 10b on the occlusal surface side of the back surface corresponding portion 11b. . Accordingly, the lower tooth row 10b can be supported at two locations in cooperation with the back surface corresponding portion 11b and the reinforcing portion 16.

  Moreover, as shown in FIG. 3, it has the prevention material (rest) 17a, 17b extended from the retainer main bodies 2a, 2b. In the present embodiment, for example, three prevention members 17a1, 17a2, and 17a3 are provided on the retainer that surrounds the upper tooth row 10a. That is, the prevention member 17a1 extends from the surface corresponding portion 12a to the extension portion 31a extending downward along the canine teeth 20a and the premolars 30a, and extends from the extension portion 31a to a part of the occlusal surface of the teeth. And a locking portion (not shown) for locking. Further, the preventive member 17a2 includes an extended portion (not shown) extending downward from the back surface corresponding portion 11a along the premolar teeth 30a and the molar teeth 40a, and extending from the extended portion to the occlusal surface of the teeth. And a locking portion 32a that is partially locked. Further, a preventive material 17a3 is provided that extends from the molar correspondence section 13a and holds the most molar 40a.

  Also, for example, three prevention members 17b1, 17b2, and 17b3 are provided in the retainer surrounding the lower tooth row 10b. That is, the preventive member 17b1 extends from the surface corresponding portion 12b to the extension portion 31b extending upward along the canine teeth 20b and the premolars 30b, and extends from the extension portion 31b to a part of the occlusal surface of the teeth. And a locking portion (not shown) for stopping. The prevention member 17b2 includes an extended portion (not shown) extending upward from the back surface corresponding portion 11b between the premolars 30b and the molars 40b, and one of the occlusal surfaces of the teeth extending from the extended portion. And a locking portion 32b that locks to the portion. Furthermore, the prevention material 17b3 which extends from the molar corresponding part 13a and retains the innermost molar 40a is provided.

  Since these preventive members 17a and 17b can hold the teeth from the occlusal surface side of the teeth, the retainer main bodies 2a and 2b can be prevented from sinking. Moreover, since the preventive members 17a and 17b extend from both the rear surface corresponding portions 11a and 11b and the front surface corresponding portions 12a and 12b, it is possible to prevent the retainer from moving in all directions, front, rear, left and right. .

  Curves toward the cervical portions 29a and 29b at positions corresponding to the premolars 30a and 30b of the surface corresponding parts 12a and 12b and positions corresponding to the molars 40a and 40b on the back side of the molar corresponding parts 13a and 13b. Engaging portions 15a and 15b are formed. As will be described later, the engaging portion 15 is formed on the tooth surface by, for example, applying and curing a bonding material on the tooth surface to form a protruding portion 22, and is mounted on the tooth rows 10a and 10b so as to embrace the protruding portion 22. Is done. Thereby, a wire can be hold | maintained by this projection part 22, and the sinking of a wire retainer can be prevented further.

  The back surface corresponding portions 11a and 11b, the front surface corresponding portions 12a and 12b, and the molar corresponding portions 13a and 13b are formed of, for example, a material selected from stainless steel, cobalt chromium alloy, and gold. For fixing integration by brazing the back surface corresponding parts 11a and 11b, the front surface corresponding parts 12a and 12b, and the molar corresponding parts 13a and 13b, it is possible to braze at a relatively low melting point, and for a long time in the oral cavity. Even if it is attached, there are no problems in health and hygiene such as oxidation and other alterations and elution of toxic substances, and it is possible to use a brazing material excellent in aesthetics, for example, a dental 14K gold brazing.

  The diameter dimensions of the back surface corresponding portions 11a and 11b, the front surface corresponding portions 12a and 12b, and the molar corresponding portions 13a and 13b are appropriately set according to the corrected dentition. For example, the back surface corresponding portions 11a and 11b disposed along the back surfaces 25a and 25b of the tooth rows 10a and 10b have a diameter dimension of about 0.9 mm and correspond to the surface disposed along the front surfaces 26a and 26b. The portions 12a and 12b have a diameter of about 0.5 mm. And the molar corresponding | compatible part 13a, 13b is a diameter dimension of about 0.7 mm. As described above, the diameter of the desired position can be increased or decreased. Thereby, the front surface corresponding portions 12a and 12b are not easily noticeable from the outside, and the back surface corresponding portions 11a and 11b can maintain high strength. Furthermore, the molar corresponding parts 13a and 13b can be easily bent and processed.

  When the orthodontic wire retainer of the present invention is mounted on the teeth 10a and 10b, the back surface corresponding portions 11a and 11b, the front surface corresponding portions 12a and 12b, and the molar teeth even if the wire retainer having the configuration of the present invention is mounted as it is. Although it can be mounted sufficiently firmly by the elastic force of the corresponding portions 13a and 13b, it is preferably used as follows in order to prevent sinking.

  That is, as shown in FIG. 4 (a), a wire retainer is once pre-mounted on the dentition 10, and the lower surface of the engaging portion 15 on the buccal side surface of the tooth with which the engaging portion 15 elastically contacts, for example, the canine 20, After attaching the mark 21 to the point, the wire retainer is removed from the dentition 10 as shown in FIG. 4B, and on the occlusal surface side (upward in the figure) of the mark 21 of the canine 20 as shown in FIG. 4C. The bonding material is applied and cured to form a flat hemispherical protrusion 22. Next, the removed wire retainer is mounted on the dentition 10 again. When the wire retainer is remounted, when the wire retainer engaging portion 15 gets over the protruding portion 22, the engaging portion 15 is slightly on the cheek side against its elastic force as shown in FIG. 4 (d). When the engaging portion 15 gets over the protruding portion 22, as shown in FIG. 4E, the engaging portion 15 returns to its original shape by the elastic restoring force, and the engaging portion 15 becomes the protruding portion. It is attached to the dentition 10 so as to embrace 22. The wire retainer thus attached to the dentition 10 is firmly attached to the dentition 10 by the cooperative action of the elastic force and the protrusions 22, and is used in everyday situations such as conversation, meals, toothpaste and sports. There is no dropout from the dentition 10 in every scene of life.

  As described above, the orthodontic wire retainer according to the present invention can be configured by using only a wire as a wrap-around type retainer, so that the teeth can be freely restrained and moved freely in a wide range. In addition, there are advantages that there is little sense of foreign matter in the mouth, conversation is easy, and there is no need to remove it during meals, making it easy to wear continuously. For this reason, a tooth | gear can be stably hold | maintained in the position after correction | amendment, and a backward return can be prevented. Moreover, since the retainer main body 2 can be fixed also from the occlusal surface side by the prevention material 17, the sinker 2 can be prevented from sinking and a stable holding function can be exhibited over a long period of time.

  When the lower tooth row 10b is supported in cooperation with the back surface corresponding portion 11b and the reinforcing portion 16, the strength can be improved and the durability can be improved. Further, the tooth holding function can be further improved.

  If the locking part 32 is arranged so as to be in non-contact with the other side of the dentition, the locking part 32 does not get in the way even when meshed at the time of wearing, and becomes comfortable at the time of wearing. It becomes easy to do.

  In the back surface corresponding portion 11, the front surface corresponding portion 12, and the molar corresponding portion 40, if a wire material having various diameters can be selected, a desired position can be thinned or thickened, and the diameter is thin. Since the location is not conspicuous and is easy on the mouth, there is an advantage that it is possible to reduce the burden when the user wears, and that the wire is easily bent and processed. At the same time, it is possible to maintain the durability by increasing the thickness of the portion where strength is required. Furthermore, the material can be reduced, and the cost can be reduced.

  When the protrusion 22 formed on the cheek side surface of the tooth is embraced and mounted on the dentition, the wire can be held by the protrusion 22. Thereby, a wire can be closely_contact | adhered to the tooth | gear surface over a long period of time, and a tooth | gear can be hold | maintained more stably.

  As described above, the embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, if the tooth to be corrected is only the upper dentition 10a, the upper dentition The retainer according to the present invention may be used only for 10a, or if the tooth to be corrected is only the lower dentition 10b, the retainer according to the present invention may be used only for the lower dentition 10b. Moreover, although it is desirable that the material of the back surface corresponding part 11, the front surface corresponding part 12, and the molar corresponding part 13 is the same, it is not restricted to the same case, Each may differ. In addition, the position and number of the prevention member 17 and the positions and number of the engaging portion 15 and the protruding portion 22 are not limited to the positions in the embodiment, and can be arbitrarily set. The diameter dimension of the wire is not limited to the embodiment, and can be variously set. The back surface corresponding part 11, the front surface corresponding part 12, and the molar corresponding part 13 are all the same diameter dimension, or all the diameter dimensions are different. Any two of them may have the same diameter dimension, and the remaining one diameter dimension may be different.

It is a perspective top view of the wire retainer for orthodontics which concerns on embodiment of this invention. It is sectional drawing of the state which mounted | wore the dentition with the orthodontic wire retainer which concerns on embodiment of this invention. It is a principal part enlarged front view of the wire retainer for orthodontics which concerns on embodiment of this invention. (A) is a cross-sectional view and a front view of a state in which the orthodontic wire retainer is pre-mounted on the dentition, (b) is a cross-sectional view and a front view of the state where the wire retainer is once removed, and (c) is a canine cheek. Sectional view and front view with protrusions formed on the side surface, (d) is a sectional view and front view in the middle of remounting the wire retainer, (e) shows the state after remounting the wire retainer It is sectional drawing and a front view. It is a see-through | perspective perspective view of the conventional wire retainer for orthodontics. It is a perspective view of another conventional orthodontic wire retainer.

Explanation of symbols

2 Retainer body 10 Teeth row 11 Back surface corresponding portion 12 Front surface corresponding portion 13 Molar corresponding portion 15 Engaging portion 16 Reinforcing portion 17 Prevention material 22 Projection portion 25 Back surface 26 Front surface 31 Extension portion 32 Locking portion 40 Molar teeth

Claims (6)

A wire retainer for holding the dentition that is attached to the upper dentition after orthodontic treatment and holds the upper dentition,
A back surface corresponding part corresponding to the back surface of the upper dentition,
A surface corresponding portion corresponding to the surface of the upper dentition;
The front surface corresponding portion and the back surface corresponding portion are connected, and there is a molar corresponding portion wound around the back molar, and a retainer body surrounding the entire circumference of the upper dentition is provided.
An orthodontic wire retainer that is provided with a preventive material that extends from the retainer body and is locked to the upper dentition to prevent the retainer body from sinking. A wire retainer for holding a dentition that is attached to the lower dentition after orthodontic treatment and holds the lower dentition,
A back surface corresponding part corresponding to the back surface of the lower dentition,
A surface corresponding portion corresponding to the surface of the lower dentition,
The front surface corresponding portion and the back surface corresponding portion are connected, and there is a molar corresponding portion wound around the back molar, and a retainer body surrounding the entire circumference of the lower dentition is provided,
An orthodontic wire retainer provided with a preventive material extending from the retainer body and locking to the lower tooth row to prevent the retainer body from sinking.   The orthodontic wire retainer according to claim 2, further comprising a reinforcing portion disposed along the back surface of the lower dentition on the occlusal surface side from the back surface corresponding portion.   The preventive member includes an extending portion extending from the retainer main body, and a locking portion extending from the extending portion and locking to a part of the dentition, and the locking portion is in a non-contact state with the counterpart dentition. It arrange | positions so that it may become. The wire retainer for orthodontics of any one of Claims 1-3 characterized by the above-mentioned.   The back surface corresponding portion, the front surface corresponding portion, and the molar corresponding portion use a wire material having a circular cross section, and the back surface corresponding portion, the front surface corresponding portion, and the molar corresponding portion can select wire materials having various diameters. The orthodontic wire retainer according to any one of claims 1 to 4, wherein:   Protrusions are formed on the surface of the teeth, and an engaging part that curves toward the cervical part is provided on the surface corresponding part and / or the molar corresponding part, and this engaging part is attached to the dentition so as to embrace the protruding part. The orthodontic wire retainer according to any one of claims 1 to 5, which is made possible.

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