JP2012071001A - Upper jaw forward traction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an upper jaw forward traction device capable of effectively pulling the upper jaw forward without applying force to the forehead and the lower jaw to energize them backward, in consequence, without impeding the forward growth of the forehead and the lower jaw.SOLUTION: The upper jaw forward traction device 1 mounted to the head H to pull the upper jaw JU forward includes a mounting implement 10 mounted to the head H; a traction implement 20 supported in a longitudinally movable manner by the mounting implement 10 such that the front end side is located in front of the mouth M and that the rear end side is located behind the back part HB of the head; a fixture 30 fixed to the upper jaw JU in the oral cavity; and a pulling member 40 stretched between the fixture 30 and the front end side of the traction implement 20. The traction implement 20 is configured such that the front end side pulls the upper jaw JU forward through the pulling member 40 and the fixture 30 as the rear end side moves toward the back part HB of the head.

Description

  The present invention relates to a head-mounted orthodontic device used for orthodontic treatment of the jaw, and more particularly to an upper jaw front traction device that pulls the upper jaw forward to promote proper forward growth of the upper jaw.

  As a device that promotes the proper forward growth of the upper jaw, an upper traction device that is used by a recipient who does not have a developed upper jaw, particularly a child who is immature in the growing stage is known (for example, a patent) Reference 1).

  Conventionally, the upper jaw front traction device includes a chicken cap type, a face mask type, a bow type, and the like. These maxillary front traction devices include a hook provided in a traction tool having a frontal head and a lower jaw (mental part) as a fixing source and disposed in front of the mouth, and a fixing device attached to the upper jaw in the oral cavity. By connecting with a rubber ring, the entire upper jaw is pulled forward (pulled). That is, the upper jaw front traction device applies a force physically (mechanically) forward to the upper jaw in order to promote proper forward growth of the upper jaw.

JP 2009-89928 A

  However, in the conventional upper jaw front traction device including that of Patent Document 1, the reaction force caused by the rubber ring pulling the upper jaw forward through the fixing tool is the frontal head in which the reaction force caused by the pulling tool is a fixing source. And acts as a backward force on the lower jaw. In other words, the conventional upper jaw front traction device pushes the frontal head and lower jaw backward in return for the price of pulling the upper jaw forward because of its structure.

  This is not desirable for children, for example, during their growth. That is, a growing child is expected to grow not only the upper jaw but also the frontal and lower jaws properly. Nevertheless, a force acting backwards regardless of the size of the forehead and lower jaw can be a factor that obstructs the forward growth of the forehead and lower jaw.

  In this way, the conventional upper jaw front traction device has a structure in which a force (compressing force) that urges the front head and the lower jaw in a backward direction acts on the front head and the lower jaw. May inhibit growth.

  The present invention has been made in view of the above-described circumstances, and the frontal head and the lower jaw are not subjected to a force for urging them toward the rear, and therefore, the front head and the lower jaw are inhibited from anterior growth. Therefore, it is an object of the present invention to provide an anterior maxillary traction device that can effectively pull the upper jaw forward, and has completely different structure, action, and effect from the conventional one.

  In order to achieve the above object, the present invention provides an upper jaw front traction device that is attached to the head and pulls the upper jaw forward, and is mounted on the head, and can be moved in the front-rear direction by the attachment tool. A traction tool that is supported and has a front end side positioned in front of the mouth and a rear end side positioned behind the occipital region; a fixing tool fixed to the upper jaw in the oral cavity; and the fixing tool and the front end side of the traction tool; A tension member stretched between the front end side and the front end side of the traction tool through the tension member and the fixture as the rear end side moves toward the rear head. It is characterized by pulling forward.

  According to this configuration, for example, when the user wears the upper traction device and lies on his back, the rear end side of the traction tool is pushed upward by the bedside and the front end side of the traction tool moves upward accordingly. Move to. Accordingly, the upper jaw can be pulled (pulled) upward, that is, toward the front of the user via the pulling member and the fixture. At this time, the user wears a mounting tool on the head, but this mounting tool supports the traction tool so as to be movable in the front-rear direction, and the forehead and lower jaw are used to pull the upper jaw. It does not become a fixed source that receives the reaction force of the tension of the pulling member. In this case, the bedside is a fixed source. For this reason, unlike conventional maxillary anterior traction devices, forces such as pushing the posterior part of the forehead and mandible backward (squeezing) to inhibit the anterior growth of the maxilla can be applied. Absent.

  In the above configuration, the wearing tool includes a head portion that extends from one temporal region to the other temporal region, and a chin portion that extends from the one temporal region to the other temporal region via the lower jaw. A headgear having a back portion extending from the one temporal region to the other temporal region, and held by the one temporal region and the other temporal region by the headgear, and You may make it provide the left guide member and the right guide member which support a tool so that a movement to the front-back direction is possible.

  According to this configuration, the headgear is mounted on the head with a three-point support of the head portion passing through the top of the head, the chin portion passing through the lower jaw, and the back portion passing through the back of the head. The left guide member and the right guide member can be securely held in the temporal region and the right temporal region, respectively, by eliminating unnecessary movement.

  In the above-described configuration, the traction tool includes a frame formed in a closed loop shape when viewed from above, and a head pad attached to the rear end of the frame and abutted on the back of the head. May be.

  According to this configuration, the upper jaw can be effectively pulled forward with a simple configuration that is light in weight.

  In the above configuration, the left guide member and the right guide member are formed in a cylindrical shape extending in the front-rear direction, and the frame penetrates the left guide member and the right guide member in the front-rear direction, and the front-rear direction It may have a left frame and a right frame that are movably guided.

  According to this configuration, since the left and right frames are guided in the front-rear direction by the left guide member and the right guide member, respectively, the frame can move smoothly in the front-rear direction.

  According to the present invention (according to the maxillary front traction device according to the present invention), the frontal head and the lower jaw are not subjected to a force for urging them in the rearward direction. It is possible to provide a maxillary anterior traction device that can effectively pull the maxilla forward without inhibiting growth and that is completely different from the conventional one in configuration, action, and effect.

It is the figure which looked at the upper jaw front traction device 1 of the state with which the user's head H was mounted | worn from the right side. Similarly, it is the figure which looked at the upper jaw front traction device 1 in a state of being mounted on the user's head H from above. Similarly, it is the figure which looked at the upper jaw front traction device 1 in the state of being mounted on the user's head H from the front side. It is the figure which looked at the fixing tool 30 of the state fixed to the upper jaw JU in a user's oral cavity from the downward direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each drawing, the member etc. which attached | subjected the same code | symbol are the same structures, The duplication description about these shall be abbreviate | omitted suitably. Moreover, in each drawing, members and the like that are not necessary for the description are omitted as appropriate.
<Embodiment 1>

  With reference to FIGS. 1-4, the upper jaw front traction apparatus 1 which concerns on Embodiment 1 to which this invention is applied is demonstrated. Here, FIG. 1 is a view of the maxillary front traction device 1 mounted on the user's head H as seen from the right side. Moreover, FIG. 2 is the figure which looked at the upper jaw front traction apparatus 1 of the state similarly mounted | worn by the user's head H from the upper side. Moreover, FIG. 3 is the figure which looked at the upper jaw front traction apparatus 1 of the state similarly mounted | worn by the user's head H from the front side. And FIG. 4 is the figure which looked at the fixing tool 30 of the state fixed to the upper jaw JU in a user's oral cavity from the downward direction.

  As shown in FIGS. 1 to 3, the upper jaw front traction device 1 includes a mounting tool 10 mounted on the user's head H, a traction tool 20 supported by the mounting tool 10 so as to be movable in the front-rear direction, As shown in FIG. 4, the fixture 30 is configured to be fixed to the upper jaw JU in the user's oral cavity, and the tension member 40 is stretched between the fixture 30 and the traction tool 20. Yes.

  As shown in FIGS. 1 to 3, the mounting tool 10 includes a headgear 11 formed of a stretchable cloth-like member, and a cylindrical left guide member 12 </ b> L and a right guide member 12 </ b> R held by the headgear 11. It has.

  The headgear 11 has a head portion 11U, a chin portion 11D, and a back portion 11B, and has a three-point support structure that is supported by the head H at these three portions. Of these, the head portion 11U reaches from the left (one) temporal HL via the parietal portion HU to the right (other) temporal HR, and the chin portion 11D extends from the left temporal HL to the lower jaw JD. To the right temporal region HR, and the back portion 11B is configured to extend from the left temporal region HL to the right temporal region HR via the occipital region HB. Here, the headgear 11 is a member for holding the left and right guide members 12L and 12R, not a member to which a reaction force acts when the upper jaw front traction device 1 pulls the upper jaw JU. It is preferable that the tightening force is relatively weak. For example, the width in the front-rear direction may be widened so that the tightening force per unit area is reduced. The portions corresponding to the left and right ears YL and YR in the headgear 11 have through holes 11a from which the left and right ears YL and YR are exposed. The headgear 11 can be configured by forming an outer shape with a wire-like frame having elasticity and filling a space between the frames with a stretchable cloth-like member. Considering that the traction device 1 is used while the user is lying on his back, it is preferable that the traction device 1 is composed entirely of cloth-like members.

  The left and right guide members 12L and 12R are formed in an elongated cylindrical shape (for example, a cylindrical shape), and are held by the above-described headgear 11 in a posture in which the longitudinal direction is substantially in the front-rear direction. The guide members 12L and 12R have through holes 12h extending from the front end portion 12f to the rear end portion 12b along the respective central axes. The guide members 12L and 12R are arranged by the headgear 11 so that the rear end portions 12b thereof are positioned in the vicinity of the upper ends of the left and right ears YL and YR and the front end portion 12f is positioned in the vicinity of the temples in the front-rear direction. Is retained. The rear ends 12b of the guide members 12L and 12R may be sandwiched between the left and right temporal portions HL and HR and the left and right ears YL and YR. The direction of the guide members 12L and 12R is substantially the same as the direction of the pattern of the glasses when wearing, for example, general glasses, and the pulling direction of the upper jaw JU described later (in FIG. 1). Also substantially coincides with the arrow P direction). The guide members 12L and 12R can be made of, for example, a hard or soft synthetic resin (plastic) or a cloth-like member rolled into a tubular shape.

  The left and right guide members 12L and 12R support a left frame 21L and a right frame 21R of the traction tool 20 described later so as to be movable in the front-rear direction through through holes 12h and 12h directed substantially in the front-rear direction.

  The mounting tool 10 having the headgear 11 and the left and right guide members 12L and 12R described above is fixedly mounted on the head H (non-moving state), whereas the traction tool 20 described below will be described. The whole is configured to move in the front-rear direction.

  The traction tool 20 covers the left frame 21L, the right frame 21R, the frame 21F before connecting the front end sides thereof, the base plate 21B connecting the rear end sides, and the front surface of the base plate 21B. The head pad 22 is provided. The left frame 21L, the right frame 21R, the front frame 21F, and the base plate 21B constitute a closed loop frame 21 having a substantially rectangular shape when viewed from above.

  The left and right frames 21L and 21R are supported by the left and right guide members 12L and 12R so that they can move in the front-rear direction, and the front ends extend downward while being gently curved. The lower ends 21a and 21b are connected by the front frame 21F. The front frame 21F is disposed so as to extend in the left-right direction in front of the user's mouth M. A left hook 23L and a right hook 23R are attached to the vicinity of the left end and the right end of the previous frame 21F, respectively. The left and right hooks 23L and 23R are respectively hooked with rubber 41L and 41R as pulling members 40 described later.

  A base plate 21B is attached to the rear end sides of the left and right frames 21L and 21R. The base plate 21B is formed in a substantially rectangular shape, and is gently curved in a convex shape toward the rear, following the back head HB. A larger head pad 22 serving as a cushion is attached to the front surface of the base plate 21B. The head pad 22 is configured by a member that is easily compressed when a compressive force is applied, for example, a sponge. The head pad 22 is fixed to the front surface of the base plate 21B and is disposed so as to be sandwiched between the base plate 21B and the back head HB.

  Note that the left and right frames 21L and 21R and the front frame 21F that constitute a part of the traction tool 20 are formed of, for example, elastic metal and can be appropriately deformed. Therefore, when pulling the upper jaw JU, the left and right frames 21L, 21R are curved so that the lower end portions 21a, 21b move relatively rearward, and bear a part of the traction force. It is like that.

  As shown in FIG. 4, the fixture 30 includes a resin plate 31 that is formed following the dome-shaped hard palate K of the upper jaw JU, and a band that is fixed to the four corners of the resin plate 31 and is fitted to teeth. 32a, 32b, 32c, 32d. In each of the bands 32a to 32d, the band 32a is disposed on the left front, the band 32b is disposed on the left rear, the band 32c is disposed on the right front, and the band 32d is disposed on the right rear. Hooks 33a, 33b, 33c, and 33d are provided in front and outside portions of the bands 32a, 32b, 32c, and 32d, respectively.

  In addition, you may use the well-known thing which has a function which expands the upper jaw JU to the left-right direction as the fixing tool 30. FIG. In this case, in addition to pulling the upper jaw JU forward, the upper jaw JU can be pushed outward.

  As the pulling member 40, for example, two rubbers 41L and 41R can be used. The left rubber 41L has one end hooked on the left front hook 32a of the fixing device 30, the other end hooked on the left rear hook 32b, and the middle portion is pulled out of the oral cavity to the left of the traction tool 20. It is hooked on the hook 23L. Similarly, the right rubber 41R has one end hooked on the right front hook 32c of the fixture 30, the other end hooked on the right rear hook 32d, and the middle portion pulled out of the oral cavity to pull the traction tool 20. Is hooked on the right hook 23R.

  Next, functions and effects of the upper jaw front traction device 1 will be described.

  FIG. 1 shows a state in which the user wears the maxillary front traction device 1 on the head H thereof. That is, the mounting tool 10 is mounted on the head H, the traction tool 20 is supported by the mounting tool 10 so as to be movable in the front-rear direction, and the fixing tool 30 is fixed to the upper jaw JU in the oral cavity. The front end side of 20 is connected by a tension member 40 (left and right rubbers 41L and 41R). And the traction tool 20 which can move to the front-back direction has shown the state arrange | positioned in the position where the head pad 22 contacts a user's back head HB lightly. In this state, the left and right rubbers 41L and 41R are not loosened and a slight tension is generated.

  Unlike the conventional one, the maxillary front traction device 1 according to the present embodiment is used in a state where the user lies on his back.

  When the user lies on the upper jaw front traction device 1, the traction tool 20 makes the base plate 21 </ b> B abut on a bedside (not shown) and does not move any more. That is, the traction tool 20 is in a state where the left and right frames 21L and 21R are erected. When the user gradually lowers the head H and compresses the head pad 22, the left and right guide members 12 </ b> L and 12 </ b> R of the wearing tool 10 and the fixing tool 30 are lowered together with the user's head H, Thus, the left and right frames 21L and 21R are raised, and the left and right hooks 23L and 23R integrated with the frames 21L and 21R are raised. As a result, the distance between the hooks 23L and 23R and the hooks 33a to 33d on the fixing tool 30 side is increased, and the left and right rubbers 41L and 41R stretched over the hooks are extended to generate tension. Then, the upper jaw JU is pulled forward of the user's face by the fixture 30 pulled by the rubbers 41L and 41R.

  Thus, the upper jaw front traction device 1 can effectively pull the user's upper jaw JU forward, and the conventional device receives the reaction force from the user's frontal HF and lower jaw JD. Unlike that, it receives reaction force at the bedside. Therefore, unlike the conventional case, a reaction force that presses the occipital region HF or the lower jaw JD backward does not act, and therefore there is no possibility of inhibiting the forward growth of the occipital region HF or the lower jaw JD.

  In the present embodiment, the traction force with respect to the upper jaw JU is brought about by the weight of the head H of the user. For example, if it is assumed that the weight of the head H is about 3 kg, if the rubber 41L, 41R has a too large elastic coefficient and a rubber that generates a tension of 3 kg or more due to a slight elongation is used, the head H floats and the head The rubber will support the weight of the part H, and the rubber will have a tension of 3 kg, and the head H will become unstable.

  On the other hand, when considering the traction force of the upper jaw JU, 3 kg is too large. Regarding the traction force, there are individual differences depending on the age of the user and the degree of immaturity of the upper jaw JU, but generally 500 to 1500 g is appropriate.

  Therefore, the maxillary forward traction device 1 according to the present embodiment is configured to generate a traction force of 500 to 1500 g as a whole. That is, the forward moving distance (stroke) of the traction tool 20 and the elastic coefficients of the rubbers 41L and 41R are selected.

  The upper jaw front traction device 1 can easily change the stroke of the traction tool 20 by changing the thickness of the head pad 22 in the front-rear direction. However, in the present embodiment, the stroke is changed. The necessary traction force can be easily generated by preparing several types of rubber 41L and 41R having different elastic coefficients and selecting an appropriate one.

  In the above, one embodiment has been described as a maxillary forward traction device suitable for the present invention. However, the present invention is not limited to this, and any modifications that do not depart from the gist of the present invention are possible. It is included within the technical scope.

  The basic concept of the maxillary forward traction device according to the present invention is completely different from the conventional maxillary forward traction device.

  That is, in the conventional maxillary front traction device, the entire system is considered in the system of the head, so that the reaction force due to the traction force is inevitably received in the system. Then, as long as the pulling force pulls the upper jaw JU, which is a part of the head H, forward, the reaction force acts as a force pressing (squeezing) the other part of the head H backward. Specifically, in the above description, the reaction force acts on the forehead HF and the lower jaw JD as a force pushing them backward. Here, as far as the head H system is concerned, it is impossible to generate the reaction force toward the rear on the back-facing surface such as the back of the head. It can be generated only on the surface facing forward (at least the surface having a forward component). Realistically, it is a part of the face facing forward.

  As described above, in the conventional upper jaw front traction device, in reality, the reaction that is caused by the traction force must be applied to a part of the face because of the structure in the head H system. That is, the upper jaw JU can be pulled forward, but on the other hand, it inevitably hinders forward growth of other parts.

  On the other hand, the maxillary front traction device according to the present invention seeks the part that receives the reaction force outside the system of the head H. Therefore, the reaction force caused by the traction force is structurally affected by the head H. It does not act on other parts. That is, there is no possibility of inhibiting forward growth of other parts.

  As described above, the maxillary forward traction device according to the present invention is completely different from the conventional one in its configuration, and can exhibit remarkable actions and effects that cannot be achieved by the conventional one.

DESCRIPTION OF SYMBOLS 1 Upper jaw front traction apparatus 10 Mounting tool 11 Headgear 11B Back part 11D Chin part 11U Head part 12L Left guide member 12R Right guide member 20 Towing tool 21 Frame 21L Left frame 21R Right frame 22 Head pad 30 Fixing tool 40 Pull Member 41L Left rubber 41R Right rubber H Head HB Rear head HF Front head HL Left (one) temporal HR Right (one) temporal HU Parietal JU Upper jaw JD Lower jaw M Mouth P Pull direction

Claims (4)

In the maxillary front traction device attached to the head and pulling the maxilla forward,
A wearing tool attached to the head;
A traction tool that is supported by the mounting tool so as to be movable in the front-rear direction, the front end side is located in front of the mouth, and the rear end side is located behind the back of the head;
A fixture fixed to the upper jaw in the oral cavity;
A tension member stretched between the fixture and the front end side of the traction tool,
As the rear end side moves toward the back of the head, the front end side pulls the upper jaw forward via the pulling member and the fixing tool.
Maxillary forward traction device characterized by the above. The wearing device includes a head part extending from one temporal region to the other temporal region and a chin portion extending from the one temporal region to the other temporal region and the one side. A headgear having a back part extending from the head to the other temporal region through the back of the head;
A left guide member and a right guide member that are held by the headgear on the one side head and the other side head and that support the traction tool so as to be movable in the front-rear direction.
The maxillary forward traction device according to claim 1. The traction tool includes a frame formed in a closed loop shape when viewed from above, and a head pad attached to a rear end of the frame and abutted against the back of the head.
The maxillary anterior traction device according to claim 2. The left guide member and the right guide member are formed in a cylindrical shape extending in the front-rear direction,
The frame includes a left frame and a right frame that are guided through the left guide member and the right guide member in the front-rear direction so as to be movable in the front-rear direction.
The maxillary forward traction device according to claim 3.

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