JP2018192068A - Oral cavity care appliance - Google Patents

Abstract

To solve a problem in prior arts, for example, massage to a gum can be performed, however, it is difficult to perform care for other parts in an oral cavity simultaneously.SOLUTION: An oral cavity care appliance 10 of the invention comprises mainly: a main body part 11; a grip part 12 extended in a longitudinal direction of the main body part 11; a pair of massage parts 13, 14 each of which is formed on each of side parts of the main body part 11; contact parts 15 formed so as to cover the massage parts 13, 14; and a hollow part 16 formed on the main body part 11. When the main body part 11 is bitten by teeth 31, 33 on upper and lower jaws, the massage parts 13, 14 are moved, for massage of a gum 32. In addition, by repeatedly biting the main body part 11 simultaneously, an environment in an oral cavity can be improved for example, performing a countermeasure against dry mouse.SELECTED DRAWING: Figure 2

Description

  The present invention is attached to the upper or lower jaw teeth, and repeatedly massages the main body with the upper and lower jaw teeth to massage the gums and increase the secretion amount of saliva. The present invention relates to an intraoral care device for adjusting the body.

  As a conventional gum massage brush, the structure shown in FIG. 4 is known. FIG. 4A is a plan view illustrating a gum massage brush, and FIG. 4B is a cross-sectional view illustrating a gum massage brush.

  As shown in FIG. 4A, the gum massage brush 100 is mainly composed of a brush body 101 and a massage part 102. The brush body 101 includes a handle portion 103, a neck portion 104, and a head portion 105. The neck portion 104 is provided between the handle portion 103 and the head portion 105, and connects both members.

  FIG. 4B shows a cross section in the BB line direction of FIG. 4A, and the massage part 102 is provided in the head part 105 so as to cover the entire head part 105. The massage unit 102 includes a base 106 and a plurality of first protrusions 107 and a plurality of second protrusions 108 provided on the upper surface of the base 106.

  As shown in FIGS. 4A and 4B, the first protrusions 107 are formed in, for example, a hemispherical shape, are the central region of the base 106, and are arranged in a plurality in the longitudinal direction of the base 106 (the Y-axis direction on the paper surface). Has been. The second protrusion 108 has, for example, a hemispherical tip, but is formed in a shape that is longer than the first protrusion 107, and is formed in regions on both ends of the base 106 so as to sandwich the first protrusion 107. Multiple sequences are arranged. The second protrusions 108 are also arranged in the longitudinal direction of the base 106 (the Y-axis direction on the paper surface).

  As shown in FIG. 5, in the gum massage brush 100, the massage unit 102 comes into contact with the gum 109 and directly stimulates the gum 109, thereby appropriately increasing the blood flow of the gum 109 and adjusting the state of the gum. Yes. The first protrusion 107 applies a relatively large stimulus to the attached gingival 110 of the gum 109, and the second protrusion 108 applies a relatively small stimulus to the interdental papilla 111 of the gum 109. (For example, refer to Patent Document 1).

JP 2017-6475 A

  In the conventional gum massage brush 100, the shape of the first protrusion 107 and the second protrusion 108 of the massage part 102 is made different, and the arrangement location of the first protrusion 107 and the second protrusion 108 is determined. ing. With this structure, the rigidity of the first protrusion 107 is larger than the rigidity of the second protrusion 108, and the second protrusion 108 is attached to the interdental papilla 111 of the gum 109 where it is not desired to apply too much stimulation. It has a structure that makes contact and massages.

  However, since a person who massages the gum 109 inserts the gum massage brush 100 into his / her mouth and massages the gum, the first protrusion of the massage part 102 is applied to the desired part of the gum 109. There is a problem that it is difficult to bring 107 into contact with the second protrusion 108 and it is difficult to apply an appropriate stimulus to the gum 109.

  Moreover, in the conventional brush 100 for gum massage, since the head part 105 in which the massage part 102 is formed is inserted into the oral cavity and moves along the gum 109, it has a relatively small shape. In addition, since the plurality of first protrusions 107 and the plurality of second protrusions 108 are accurately formed with respect to the head portion 105, there is a problem that the structure becomes complicated.

  In the massage of the gum 109 using the conventional gum massage brush 100, the user operates the handle portion 103, so that the head portion 105 moves in the oral cavity and the gum 109 is massaged. Therefore, during the massage of the gum 109, the salivary glands are stimulated without increasing the amount of teeth in the upper and lower jaw teeth to increase the amount of saliva secretion, so-called dry mouth measures, measures for chewing function, etc. Other measures in the oral cavity could not be performed at the same time.

  In particular, there is a problem that elderly people tend to reduce saliva secretion amount with aging, and as a result, bad breath is likely to occur, and oral troubles are likely to occur such as tooth decay. Furthermore, elderly people tend to prefer soft foods because their teeth become worse after many years of use, and as a result, there is a problem that they tend to fall into a vicious circle in which the masticatory function is degraded.

  The present invention has been made in view of the above circumstances, and by biting the main body part with the upper and lower jaw teeth, the massage part connected to the main body part is movable, and the massage part massages the gums, At the same time, it is intended to provide an intraoral care device that takes measures against dry mouth in the oral cavity and masticatory function. Furthermore, since the above gums can be massaged by biting the main body with upper and lower jaw teeth, an oral care device that can be easily handled even by elderly people such as the handicapped There is to do.

  In the intraoral care device of the present invention, a main body portion disposed in a meshing region between the upper jaw teeth and the lower jaw teeth, a handle portion extending in the longitudinal direction of the main body portion, the upper jaw teeth or the A pair of massaging portions provided along the left side surface and the right side surface in the short direction of the main body so as to sandwich the teeth of the lower jaw, and one end side thereof extending to the upper teeth or the gums supporting the lower teeth The body portion includes a hollow portion formed through the longitudinal direction, and a pair of first thin walls that are located on the lower side of the hollow portion and are formed along the longitudinal direction, respectively. And a pair of second thin portions formed on the side of the hollow portion and formed along the longitudinal direction, respectively. It is formed closer to the massage part than the center in the short direction The second thin portion is characterized by being formed in said massaging portion than the vertical center of the body portion of each of the hollow portion.

  In the intraoral care device of the present invention, the first thin portion is formed around a pair of first protruding hollow portions in which a part of the hollow portion protrudes downward, and the second thin portion is , A part of the hollow part is formed around a pair of second projecting hollow parts projecting to the side, and the first thin part and the second thin part of the link mechanism in which the massage part is movable It is the center of rotation.

  Moreover, in the intraoral care device of the present invention, the massage part is formed with a contact part that covers the periphery thereof, and the contact part is formed of a softer member than the massage part, and the inside of the massage part. A thick portion is formed in the vicinity of the main body.

  In the intraoral care device of the present invention, a first protrusion that protrudes upward from the main body is formed on the upper surface of the main body, and a lower surface of the main body is formed on the lower surface of the main body. A second protrusion that protrudes downward is formed.

  The intraoral care device of the present invention has a main body portion that is repeatedly bitten by the teeth of the user's upper and lower jaws, and a pair of massage portions provided on the main body portion. A plurality of thin portions are formed in the vicinity of the portion. With this structure, the thin part functions as a fulcrum of the link mechanism of the massage part, and the massage part moves to the gum side in conjunction with the deformation of the main body part when being bitten to realize gum massage. Can do. At the same time, the environment in the user's oral cavity can be adjusted by repeatedly biting the main body portion with the teeth of the user's upper and lower jaws.

  In the intraoral care device of the present invention, the main body portion is formed with a plurality of protruding hollow portions in which a part of the hollow portion is protruded, and the thin-walled portion is formed around the plurality of protruding hollow portions. With this structure, the hollow portion of the main body portion is deformed when it is bitten, but the thin-wall portion functions in conjunction with the deformation of the hollow portion and functions as the rotation center of the link mechanism of the massage portion. .

  Moreover, in the intraoral care instrument of this invention, a contact part is formed so that a massage part may be covered, and the contact part is formed of the member softer than a massage part. Moreover, the thick part is formed in the desired location in the contact part. With this structure, the gums are prevented from being damaged during the gum massage, and the entire gum including the interdental papilla can be massaged.

  In the intraoral care device of the present invention, protrusions are formed on the upper and lower sides of the main body. With this structure, both protrusions can reliably contact the teeth of the upper and lower jaws of the user, and the massage part can be moved as a whole without deviation, thereby realizing massage over a wide range of gums. .

It is (A) perspective view, (B) side view, (C) sectional view for demonstrating the intraoral care instrument which is one Embodiment of this invention. It is sectional drawing explaining the (A) mounting state of the intraoral care instrument which is one Embodiment of this invention, (B) It is sectional drawing for demonstrating a movable state. It is explanatory drawing for demonstrating the use condition of the intraoral care instrument which is one Embodiment of this invention. It is (A) top view and (B) sectional drawing explaining the conventional brush for gum massage. It is explanatory drawing explaining the usage method of the conventional brush for gum massage.

  Hereinafter, an intraoral care device 10 according to an embodiment of the present invention will be described in detail with reference to the drawings. In the description of the present embodiment, the same reference numerals are used for the same members in principle, and repeated descriptions are omitted.

  FIG. 1A is a perspective view illustrating an intraoral care device 10 of the present embodiment. FIG. 1B is a side view illustrating the intraoral care device 10 of the present embodiment. FIG. 1C is a diagram illustrating the intraoral care device 10 of the present embodiment, and is a cross-sectional view taken along the line AA of FIG. In the following description, the vertical direction indicates the height direction of the oral care device 10, the left-right direction indicates the width direction in the short direction of the oral care device 10, and the front-back direction is the longitudinal direction of the oral care device 10. The width direction is shown.

  As shown in FIG. 1 (A), the intraoral care device 10 mainly includes a main body part 11, a handle part 12 extending from the main body part 11 in the longitudinal direction (front and rear direction in the drawing), and the main body part 11. A pair of massage parts 13, 14 extending downward from both sides in the short direction (left and right direction on the paper), a contact part 15 formed so as to cover the massage parts 13, 14, and the main body part 11 And a formed hollow portion 16.

  The main body part 11, the handle part 12, and the massage parts 13 and 14 are integrally formed of, for example, a thermoplastic resin such as polyethylene, polypropylene, polystyrene polyester, or polyamide, an ABS resin, or a polyethylene terephthalate resin. Then, the hollow portion 16 is formed in the main body portion 11 when being integrally formed. On the other hand, the contact part 15 is shape | molded from resin more flexible than the said massage parts 13 and 14, such as a silicone resin and a urethane resin, for example.

  The main body 11 has a substantially rectangular parallelepiped shape, and is formed so as to have a longitudinal direction in the front-rear direction on the paper surface and a short direction in the left-right direction on the paper surface. As shown in FIG. 1 (B), the upper side surface 11A of the main body 11 is formed so as to be inclined obliquely downward on the front side of the center and horizontally on the rear side of the center in the longitudinal direction. ing. The upper side surface 11A is formed with a protruding portion 11B that protrudes upward, and the protruding portion 11B extends, for example, in the longitudinal direction of the main body portion 11 (the front-rear direction in the drawing). Although the details will be described later, the protrusion 11B is formed on the upper side surface 11A, so that the protrusion 11B can be the upper teeth 33 (see FIG. 2A) or the lower teeth 31 (see FIG. 2A). Thus, a structure in which the main body 11 is reliably bitten by the upper and lower jaw teeth 31 and 33 is realized.

  As shown in FIG. 1C, the lower surface 11C of the main body 11 is formed with a protrusion 11D that protrudes downward, and the protrusion 11D is, for example, in the longitudinal direction of the main body 11 (the front-rear direction in the drawing). Crossing is formed. Then, the cross-sectional shape of the protrusion 11D is, for example, a gentle substantially triangular shape, and the protrusion 11D is formed at the center of the main body 11 in the short direction. Although details will be described later, the shape of the meshing surfaces of the upper and lower jaw teeth 31 and 33 (see FIG. 2A) is recessed toward the center thereof, so that the protrusion 11D is formed on the lower side surface by the above-mentioned cross-sectional shape. By forming the protrusion 11D on the 11C, the protrusion 11D can easily come into contact with the upper jaw teeth 33 or the lower jaw teeth 31 and the main body 11 can be reliably bitten by the upper and lower jaw teeth 31 and 33. Is done.

  As shown in FIG. 1 (B), the hollow portion 16 penetrates from the front side surface 11E to the rear side surface 11F of the main body portion 11 and is formed in the main body portion 11, and as shown in FIG. The cross-sectional shape of the hollow portion 16 along the short direction of the portion 11 is, for example, a substantially rectangular shape. And in the area | region shown by the round marks 17 and 18, a part of hollow part 16 protrudes below, and protrusion hollow part 16A, 16B is formed, The cross-sectional shape of protrusion hollow part 16A, 16B is substantially, for example Triangular shape. Moreover, in the area | region shown by the round marks 21 and 22, a part of hollow part 16 protrudes to the side side, protrusion hollow part 16C, 16D is formed, and the cross-sectional shape of protrusion hollow part 16C, 16D is, for example, It is a substantially triangular shape.

  In the regions indicated by the circles 17 and 18, the thin portions 19 and 20 of the main body 11 are formed in the periphery including the lower portion of the region where the projecting hollow portions 16A and 16B are formed. The thin portions 19 and 20 are each formed closer to the massage portion 13 than the center CL1 of the hollow portion 16 in the left-right direction. The projecting hollow portions 16 </ b> A and 16 </ b> B are formed across the longitudinal direction of the main body portion 11 (the front-rear direction in the drawing), and similarly, the thin-walled portions 19 and 20 are also formed across the longitudinal direction of the main body portion 11.

  In the regions indicated by circles 21 and 22, the thin portions 23 and 24 of the main body 11 are formed in the periphery including the sides of the regions where the projecting hollow portions 16C and 16D are formed. The thin portions 23 and 24 are each formed closer to the massage portion 13 than the center CL <b> 2 in the vertical direction of the hollow portion 16. The projecting hollow portions 16 </ b> C and 16 </ b> D are formed across the longitudinal direction (the front-rear direction on the paper surface) of the main body 11. Similarly, the thin portions 23 and 24 are also formed across the longitudinal direction of the main body 11.

  As shown in the figure, thin portions 19 and 23 are formed in the vicinity of the corner portions of the lower side surface 11C and the left side surface 11G of the main body portion 11, respectively. On the other hand, the thin portions 20 and 24 are formed in the vicinity of the corner portions of the lower side surface 11C and the right side surface 11H of the main body portion 11, respectively. With this structure, the thin-walled portions 19, 20, 23, and 24 are fulcrums of the link mechanism of the massage portions 13 and 14, and function as the center of rotation. And when the main-body part 11 is bitten by the upper and lower jaw teeth 31, 33 (see FIG. 2A), the massage parts 13, 14 have the thin-walled parts 19, 20, 23, 24 as fulcrums. By moving toward the inside of the main body 11, massage of the gum 32 (see FIG. 2A) is realized.

  As shown in FIGS. 1A and 1C, the massage portions 13 and 14 are formed along the left side surface 11G and the right side surface 11H of the main body portion 11 along the longitudinal direction of the main body portion 11, respectively. The distal end sides of the massage parts 13 and 14 are formed extending downward from the main body part 11. And the front end side of massage parts 13 and 14 is divided and formed in a plurality of fields, and the structure which is easy to touch corresponding to the curved surface of gum 32 (refer to Drawing 2 (A)) and the uneven shape of gum 32 Thus, the contact area between the contact portion 15 and the gum 32 can be increased.

  Moreover, while the front end side of the massage parts 13 and 14 is formed as a free end, the front end side is formed in the length which reaches | attains the gum 32 (refer FIG. 2 (A)). With this structure, the massage parts 13 and 14 move toward the inside of the main body part 11 when the main body part 11 is bitten by the upper and lower jaw teeth 31 and 33 and sandwich the gum 32 via the contact part 15. Can add stimulus.

  As shown in FIG. 1C, the contact portion 15 is formed so as to cover the massage portions 13 and 14. As described above, the contact portion 15 is formed of a resin that is more flexible than the massage portions 13 and 14, and thus the contact portion 15 directly contacts the gum 32 (see FIG. 2A). 32 is prevented from being damaged. And as for the thickness of the contact part 15 formed inside the massage parts 13 and 14, the upper side is formed thickly and the lower side is formed thinly. In particular, the thick portion 15A of the contact portion 15 provided in the vicinity of the main body portion 11 has a bulging shape corresponding to the outer diameter of the tooth 31 (see FIG. 2A) and the gum 32, so that the gum 32 The interdental papilla 32 </ b> B (see FIG. 2B) can be easily contacted, and stimulation can be applied to the entire gum 32 via the contact portion 15.

  FIG. 2A is a cross-sectional view for explaining the wearing state of the intraoral care device 10 of the present embodiment. FIG. 2B is a cross-sectional view illustrating a movable state of the intraoral care device 10 of the present embodiment.

  In FIG. 2 (A), the intraoral care device 10 is attached to, for example, the teeth 31, 34, and 35 (see FIG. 3) on the back side of the lower jaw in the oral cavity, and the cross section of the tooth 31 is shown. Is shown. As illustrated, the main body portion 11 is disposed so as to contact the upper surface of the tooth 31, and the massage portions 13 and 14 are disposed so as to sandwich the tooth 31 therebetween. The massage parts 13 and 14 extend to at least the middle part of the attached gingiva 32A of the gum 32, so that the entire part including the interdental papilla 32B of the gum 32 can be stimulated via the contact part 15.

  In the stage before the intraoral care device 10 is mounted and the main body 11 is bitten by the upper and lower jaw teeth 31 and 33, the massage parts 13 and 14 open to the outer side in the left-right direction on the paper surface. It is in a state. Therefore, although the main-body part 11 and the tooth | gear 31 are contacting, the contact part 15 which covers the massage parts 13 and 14 and the gum 32 are not in contact. In addition, since the magnitude | size of the tooth | gear 31 and the gum 32 changes with individuals, the state which the contact part 15 and the gum 32 contacted may be sufficient, and the state which is not actively stimulated with respect to the gum 32 from the massage parts 13 and 14 is sufficient. It has become.

  In FIG. 2B, in the cross section shown in FIG. 2A, the massaging portions 13 and 14 are left and right on the paper surface with respect to the main body portion 11 by biting the main body portion 11 with the teeth 31 and 33 of the upper and lower jaws. The state which moved to the inner side of the direction and the contact part 15 contacted the tooth | gear 31 and the gum 32 was shown.

  Specifically, a hollow portion 16 is formed in the main body portion 11 in the longitudinal direction (front and rear direction in the drawing), and the hollow portion 16 is formed by the main body portion 11 being bitten by the upper and lower jaw teeth 31 and 33. The main body 11 is crushed and deformed. When the main body 11 is deformed, the thin-walled portions 19, 20, 23, and 24 are disposed near the roots of the massage portions 13 and 14, and are bent in a shape that is thinner than other regions of the main body 11. It is a fulcrum of the link mechanism for moving the massage parts 13 and 14 and functions as the center of rotation.

  With this structure, when the main body 11 is bitten by the upper and lower jaw teeth 31, 33, the massage parts 13, 14 are directed toward the inside of the main body 11 as shown in FIG. The state which moves and applies a stimulus to the gum 32 via the contact part 15 is implement | achieved. On the other hand, when the main body 11 is not bitten by the upper and lower jaw teeth 31 and 33, the main body 11 returns to its original shape as shown in FIG. 13 and 14 move toward the outside of the main body 11, and the state of stimulating the gum 32 is released.

  That is, in a state where the oral cavity care device 10 is attached to the tooth 31, the massage parts 13 and 14 are movable by repeating the operation of biting or separating the main body part 11 with the upper and lower jaw teeth 31 and 33. Thus, massage of the gum 32 is realized. Nerves, blood vessels, and lymph vessels pass through the bones that support the teeth 31 embedded in the gums 32. By stimulating the gums 32, the blood circulation and lymph functions are activated, and the state of the gums 32 is changed. Can be healthy.

  Further, since the thick portion 15A of the contact portion 15 has the above-described bulging shape, the thick portion 15A comes into contact with the interdental papilla 32B of the gum 32 positioned inside the attached gum 32A of the gum 32. It becomes easy, a massage is implement | achieved also with respect to the interdental papilla 32B of the gum 32, and the healthy state of the gum 32 can be maintained. In particular, it is possible to prevent the interdental papilla 32B of the gum 32 from retreating due to aging, and the tooth 31 from being easily removed due to alveolar pus leakage or the like.

  Moreover, in order to move the massage parts 13 and 14, the salivary glands in the oral cavity can be stimulated by repeating the operation of biting or separating the main body part 11 with the teeth 31 and 33 of the upper and lower jaws. In particular, elderly people tend to reduce the amount of saliva secreted as they age, and as a result, bad breath and cavities tend to occur. At the same time, measures against dry mouth can be realized.

  Furthermore, elderly people tend to prefer soft foods because their teeth worsen over many years of use, and as a result, they tend to fall into a vicious circle in which the masticatory function is degraded, but repeatedly bite the main body 11. Thus, the chewing function is trained and the teeth 31 and gums 32 are also in a healthy state. As a result, by maintaining the own teeth 31 and 33 and ingesting nutrients by mastication with the own teeth 31 and 33, it is possible to live a healthy life.

  FIG. 3 is a view schematically showing the inside of the oral cavity in order to explain the use state of the intraoral care device 10 of the present embodiment.

  In FIG. 3, as described in FIGS. 2A and 2B, the oral care device 10 is attached to, for example, the teeth 31, 34, and 35 on the back side of the lower jaw on the right side of the oral cavity. State. As shown in the figure, the user rubs the handle portion 12 of the intraoral care device 10 with a finger and inserts the main body portion 11 into the oral cavity, for example, on the teeth 31, 34, 35 on the back side of the lower jaw. On the other hand, the main body 11 and the like are aligned and attached. In the present embodiment, the length of the main body 11 in the longitudinal direction (the front-rear direction in the drawing) is a length that can be attached to the three teeth 31, 34, and 35. Arbitrary design changes such as for women and women are possible.

  As described above, the front side of the upper surface 11 </ b> A of the main body 11 is inclined obliquely downward. With this structure, when the mouth is opened, the distance between the teeth on the upper and lower jaws is narrower on the back side than on the near side in the oral cavity, but the main body 11 is attached to the back side tooth as much as possible. The gums 32 and 36 in the oral cavity can be massaged as a whole.

  Further, a protrusion 11B protruding upward is formed on the upper side surface 11A of the main body 11. As described above, in the oral cavity, the distance between the upper and lower jaw teeth is narrower on the back side than the near side, but the main body portion 11 comes into contact with the upper and lower jaw teeth at the center thereof, so that the main body portion It becomes easy to transmit the force which bites uniformly with respect to 11 whole, and the effect of a massage can be given with respect to the wide range of gums 32 and 36.

  The intraoral care device 10 massages the gum 32 by repeatedly biting the main body 11 with the teeth 31 and 33 of the upper and lower jaws while holding the handle 12 with fingers. Can do. As a result, even an elderly person or the like who is handicapped can easily handle the oral care device 10.

  In addition, although this embodiment demonstrated the case where the intraoral care instrument 10 was mounted | worn with respect to the teeth 31, 34, and 35 of the lower jaw, and the massage parts 13 and 14 were moved, it restricts to this case is not. For example, the user rubs the handle portion 12 of the oral care device 10 with a finger, moves the handle portion 12 with respect to the other teeth of the lower jaw and the upper jaw teeth, wears the oral care device 10, and gums 32 and 36. Can also be massaged as a whole.

  Moreover, although the main-body part 11, the handle part 12, and the massage parts 13 and 14 demonstrated the case where it shape | molds integrally by the thermoplastic resin etc. which were mentioned above, it does not limit to this case. For example, the main body portion 11 and the massage portions 13 and 14 may be formed integrally, the handle portion 12 may be formed separately, and both members may be detachable. In particular, even when the main body 11 is deteriorated by repeatedly being bitten by the upper and lower jaw teeth, only the main body 11 and the massage parts 13 and 14 can be replaced, and the handle 12 can be used repeatedly.

  Moreover, although the contact part 15 demonstrated the case where it formed so that the massage parts 13 and 14 might be covered, it is not limited to this case. For example, the contact part 15 may be integrally formed of the same material as the massage parts 13 and 14 including the main body part 11. In this case, it is preferable that a material having a hardness that does not damage the gum 32 is used as the material of the massage portions 13 and 14. In addition, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Oral care device 11 Main body part 11A Upper side surface 11B Protrusion part 11C Lower side surface 11D Protrusion part 12 Handle part 13, 14 Massage part 15 Contact part 16 Hollow part 16A, 16B, 16C, 16D Protrusion hollow part 19, 20, 23 , 24 Thin section

Claims (4)

A main body disposed in a meshing region between the upper and lower teeth;
A handle portion extending in the longitudinal direction of the main body portion;
It is provided along the left side surface and the right side surface in the short direction of the main body so as to sandwich the upper jaw tooth or the lower jaw tooth, and one end side thereof extends to the gum supporting the upper jaw tooth or the lower jaw tooth A pair of massage parts,
In the main body,
A hollow portion formed through the longitudinal direction;
A pair of first thin portions that are located on the lower side of the hollow portion and formed along the longitudinal direction,
A pair of second thin portions formed on the side of the hollow portion and formed along the longitudinal direction, respectively,
Each of the first thin portions is formed closer to the massage portion than the center in the short direction of the hollow portion,
Each said 2nd thin part is formed in the said massage part side rather than the center of the up-down direction of the said main-body part of the said hollow part, The intraoral care instrument characterized by the above-mentioned. The first thin portion is formed around a pair of first protruding hollow portions in which a part of the hollow portion protrudes downward.
The second thin portion is formed around a pair of second projecting hollow portions in which a part of the hollow portion projects to the side,
The intraoral care device according to claim 1, wherein the first thin portion and the second thin portion are a rotation center of a link mechanism in which the massage portion is movable. The massage part is formed with a contact part covering its periphery,
The contact portion is formed of a member softer than the massage portion, and a thick portion is formed in the vicinity of the main body portion inside the massage portion. An oral care device according to claim 1. On the upper surface of the main body, a first protrusion that protrudes upward from the main body is formed.
The oral cavity care according to any one of claims 1 to 3, wherein a second projecting portion projecting downward from the main body portion is formed on a lower surface of the main body portion. Instruments.

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