JP2023103133A - Oral wearable device - Google Patents

Abstract

To provide a dietary oral wearable device firmly fitted to an oral cavity and prevented from falling during meals.SOLUTION: An oral wearable device (100) includes a detachable curved plate (10) to be worn in the oral cavity by firmly sticking it to a hard palate so as to cover at least part of palatal sides of molar teeth, and convex attachments (201 and 202) fixed to each palatal side of first molar teeth on the left and right sides of the maxilla. The curved plate (10) includes fitting recesses (101 and 102) that when the oral wearable device is worn, can be fitted to each of the attachments (201 and 202).SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intraoral fitting that is worn to narrow the oral cavity for the purpose of dieting or the like.

In order to limit the amount of food that can be taken into the oral cavity, an intraoral fitting that is worn in the oral cavity during meals to narrow the oral cavity capacity has been proposed (see Patent Documents 1 and 2 below).
The intraoral fitting is worn by bringing its upper surface, which is formed along the shape of the hard palate, into close contact with the hard palate.
By restricting the amount of food that can be taken into the oral cavity by wearing an intraoral appliance, sufficient mastication is performed and a feeling of satiety can be easily obtained, which is said to have a dieting effect.

The intraoral attachment device described in Patent Document 1 is formed such that its outer edge conforms to the inner shape of the row of teeth. Specifically, recesses (a first recess and a second recess) are formed in each of the left and right front edges of the intraoral appliance, and recesses (a third recess, a fourth recess, a fifth recess, and a sixth recess) are formed in each of the left and right edges of the appliance.
The first recess and the second recess are arranged with a gap between the upper jaw No. 1 and the upper jaw No. 2, and the third recess, the fourth recess, the fifth recess, and the sixth recess are brought into contact with the roots of the teeth of the upper jaw No. 3, upper jaw No. 4, upper jaw No. 5, and upper jaw 6, so that the intraoral attachment can be worn in the oral cavity with the upper surface thereof in contact with the upper palate.

The intraoral attachment device described in Patent Document 2 is composed of a raised floor and a plurality of L-shaped wires (holders) protruding from the left and right edges of the floor, and can be worn in the oral cavity by inserting and engaging the tips (ball clasps) of these wires between upper teeth and bringing the upper surface of the floor into close contact with the hard palate.

JP 2011-92294 A JP 2008-104525 A

(1) The intraoral attachment device described in Patent Literature 1 may easily come off when the user's molar teeth are slanted outward (toward the buccal side).
Even with the intraoral appliance described in Patent Document 2, some users may not be able to reliably engage the wire with the upper teeth, and the tip of the wire may come off from between the teeth, causing the intraoral appliance to come off.

(2) The intraoral wear device described in Patent Document 2 has an excessive thickness, and a step (see FIG. 4 of the same document) is formed between the rear edge (rear end surface) and the palate. For this reason, the shape of the oral cavity changes greatly by wearing it, making it difficult to pronounce, and eating becomes difficult due to the accumulation of food on the steps. In addition, the user may unintentionally press the rear end surface with the tongue, causing the intraoral attachment to come off.

Although the intraoral appliance described in Patent Document 1 is thinner than the one described in Patent Document 2, since the rear edge in the bottom view is hollowed out in an arch shape (paragraph 0054 of the same document, see FIG. 4(A)), food accumulates in the hollowed out portion (space), making it difficult to eat. In addition, a step is formed between the rear end of the intraoral fitting and the palate in the cross section along the midline (the center line in the left-right direction), and the user unconsciously presses the rear end with the tongue, which may cause the intraoral fitting to come off.

The present invention has been made based on the circumstances as described above.
A first object of the present invention is to provide an intraoral wearable device that is firmly attached to the oral cavity and does not come off during eating.
A second object of the present invention is to provide an intraoral attachment that causes less discomfort when worn.

(1) The intraoral wearable device of the present invention includes a detachable curved plate that is attached to the oral cavity by covering at least a part of the palatial side surface of the molar tooth and being brought into close contact with the hard palate,
a convex attachment fixed to the palatal side of each of at least a pair of molars facing each other across the midline;
It is characterized in that the curved plate is formed with a fitting recess that can be fitted with each of the attachments when the curved plate is mounted.

According to the intraoral attachment having such a configuration, the attachments fixed to the palatal side surfaces of each of the pair of molars are fitted into the fitting recesses formed in the curved plate, whereby the curved plate is fixed to the pair of left and right molars, whereby the curved plate can be firmly attached in the oral cavity.

(2) In the intraoral wearable device of the present invention, the attachment is preferably fixed to the palatal side of the bicuspid (maxillary 4th or maxillary 5th) or the first molar (maxillary 6th) on the left and right sides of the maxillary.

(3) In the intraoral wearable device of the present invention, it is particularly preferable that the attachment is fixed to the palatal side surface of the first molar (maxillary 6th) on the left and right sides of the maxillary.

(4) In a bottom view of the attachment that constitutes the intraoral wearable device of the present invention, it is preferable that the angle formed by the projecting direction of the attachment fixed to the palatal side surface of the left molar and the projecting direction of the attachment fixed to the palatal side surface of the right molar be 180°±20°.

According to the intraoral attachment having such a configuration, the projecting directions of the left and right attachments are substantially aligned, so that the attachment can be easily attached by pressing the curved plate against the upper jaw.

(5) In the intraoral wearable device of the present invention, it is preferable that the attachment has a substantially hemispherical shape.

According to the intraoral attachment having such a configuration, the curved plate can be attached and detached more easily.

(6) In the intraoral wearable device of the present invention, the maximum thickness of the curved plate is 10 to 50% of the height of the hard palate,
In a bottom view of the curved plate, it is preferable that the rear edge of the curved plate is substantially linear.

According to the intraoral fitting having such a configuration, it is possible to avoid the formation of a large step between the rear end of the curved plate and the hard palate in the cross section along the midline.

(7) In the intraoral attachment device of the present invention, it is preferable that the curved plate is formed with a jig insertion portion into which a tip of a removal jig can be inserted.
According to the intraoral attachment having such a configuration, the curved plate can be easily removed by hooking the tip of the removal jig on the jig insertion portion and peeling off the curved plate from the hard palate.

According to the intraoral attachment device of the present invention according to claims 1 to 5, the curved plate can be firmly attached in the oral cavity via the attachment, and the curved plate can be prevented from falling off during eating.
According to the intraoral wearable device of the sixth aspect of the present invention, since a large difference in level does not occur between the rear edge of the curved plate and the palate, there is less sense of discomfort when worn.
According to the intraoral attachment device of the present invention according to claim 7, the curved plate can be easily removed using the removal jig.

It is a bottom view (lower surface view) which shows the intraoral mounting tool which concerns on one Embodiment of this invention. FIG. 2 is a detailed view of part IIA in FIG. 1; FIG. 2 is a detailed view of part IIB of FIG. 1; FIG. 2B is a cross-sectional view along IIIA-IIIA in FIG. 2A; FIG. 2B is a cross-sectional view along IIIB-IIIB in FIG. 2B; FIG. 2 is a sectional view taken along line IV-IV in FIG. 1 (a sectional view taken along the left and right center lines); 1. It is a bottom view of the curved plate which comprises the intraoral attachment shown in FIG. FIG. 6 is a plan view of the curved plate shown in FIG. 5; 6 is a front view of the curved plate shown in FIG. 5; FIG. Figure 6 is a rear view of the curved plate shown in Figure 5; Figure 6 is a side view of the curved plate shown in Figure 5; 2 is a bottom view of an attachment that constitutes the intraoral attachment shown in FIG. 1. FIG. FIG. 11 is a detailed view of the XIA part of FIG. 10; FIG. 11 is a detailed view of the XIB portion of FIG. 10; 11B is a cross-sectional view taken along line XIIA-XIIA of FIG. 11A; FIG. FIG. 11B is a cross-sectional view along XIIB-XIIB of FIG. 11B; It is explanatory drawing which shows the condition when a fitting recessed part fits with an attachment. It is a bottom view which shows the modification of the intraoral attachment tool of this invention.

<Embodiment>
Hereinafter, one embodiment of the intraoral fitting of the present invention will be described with reference to the drawings.
The intraoral fitting 100 of this embodiment shown in FIGS. 1 to 4 is worn for the purpose of dieting and narrowing the oral cavity volume.

This intraoral wearable device 100 is composed of a curved plate 10 that is worn in the oral cavity (upper jaw side) by being brought into close contact with the user's hard palate, and attachments 201 and 202 that are fixed to the tooth surfaces of the user's molar teeth (palatal side).

The curved plate 10 that constitutes the intraoral fitting 100 is detachably attached to the oral cavity by covering at least a part of the palate side surface (tooth surface area near the gingiva) of the first premolars (L4, R4), the second premolars (L5, R5), and the first molars (L6, R6) on the left and right sides of the upper jaw of the user, and being brought into close contact with the hard palate HP.

As shown in FIGS. 5-9, the curved plate 10 has an upper surface 11 that contacts the hard palate and a lower surface 12 that the tongue contacts.
The upper surface 11 and the lower surface 12 of the curved plate 10 intersect each other at a front edge 13 , a rear edge 16 , a left edge 14 and a right edge 15 .

The upper surface 11 of the curved plate 10 is curved in the front-rear direction and arched in the left-right direction so as to be in close contact (surface contact) with the hard palate HP of the user.
As shown in FIG. 4, the upper surface 11 of the curved plate 10 installed in the oral cavity is highest in the vicinity of the rear edge 16 on the center line in the left-right direction, slopes downward as it proceeds forward, and reaches the front edge 13 with a gentle slope near the front edge 13.

The lower surface 12 of the curved plate 10 is also curved in the front-rear direction and has an arch shape in the left-right direction.

The front edge 13 is located on the front side (lip side) when the curved plate 10 is attached.
The front edge 13 is located behind the incisor papilla (not shown) in order to avoid that the curved plate 10 covers (compresses) the incisor papilla.

The left edge 14 is positioned on the left side (buccal side) when the curved plate 10 is worn.
The left edge 14 is formed with recesses 143 to 146 corresponding to the tooth root shapes of the maxillary left canine L3 and molars (first premolar L4, second premolar L5, first molar L6).
When the curved plate 10 is attached, part of the palatal side surface (tooth surface area close to the gingiva) of the maxillary left molars L4, L5, and L6 is covered by the upper surface 11 in the vicinity of the left edge 14 forming recesses 144 to 146.

The right edge 15 is positioned on the right side (buccal side) when the curved plate 10 is worn.
The right edge 15 is formed with recesses 153 to 156 corresponding to the root shape of the maxillary right canine R3 and molars (first premolar R4, second premolar R5, first molar R6).
When the curved plate 10 is attached, a part of the palatal side surface (tooth surface area close to the gingiva) of the maxillary right molars R4, R5, R6 is covered by the upper surface 11 near the right edge 15 forming recesses 154-156.

The rear edge 16 is located on the rear side when the curved plate 10 is attached.
The posterior edge 16 is located anterior to the arline so that the posterior end of the curved plate 10 does not contact the soft palate.

As shown in FIG. 4, the thickness (t) of the curved plate 10 is maximum in the middle in the front-rear direction and gradually decreases along the front-end direction and the rear-end direction.
Here, the “thickness of the curved plate” refers to the distance between the upper surface and the lower surface of the curved plate measured in the direction perpendicular to the occlusal surface of the user when the curved plate is placed in the user's oral cavity.

Also, the "occlusal plane" is an imaginary plane passing through the occlusal region of the teeth and generally includes one point of contact on the left molar, one point of contact on the right molar, and one point of contact on the central or lateral incisors.

The maximum thickness of the curved plate 10 is preferably 10-50% of the height of the hard palate, more preferably 20-40%.
Here, the "height of the hard palate" refers to the distance from the highest position of the user's hard palate to the occlusal surface.

If the maximum thickness of the curved plate 10 is less than 10% of the height of the hard palate (too thin), the mouth volume cannot be narrowed sufficiently.
On the other hand, if the maximum thickness of the curved plate 10 is less than 50% of the height of the hard palate (too thick), the shape of the oral cavity will change significantly when the plate is worn, and the user is likely to experience significant discomfort and chewing disorders.

As shown in FIG. 5, the rear edge 16 of the curved plate 10 in bottom view is formed substantially linearly except for the left and right sides, and is not gouged in an arch shape.

The maximum thickness of the curved plate 10 is 10 to 50% of the height of the hard palate, and the rear edge 16 in bottom view is formed on a substantially straight line (not scooped out in an arch shape). This prevents food from accumulating behind the rear edge 16, and also avoids the formation of a large step between the rear end of the curved plate 10 and the palate in the cross section along the midline (center line in the left-right direction).
As a result, it is possible to achieve a good balance between the diet effect due to the reduction in the oral cavity volume and the effect of reducing discomfort during wearing (during meals).

When the rear edge of the curved plate is hollowed out in an arch shape (see FIG. 4A of Patent Document 1), food accumulates in the hollowed out portion (space), making eating difficult. In addition, in a cross section along the midline, a step formed between the rear end of the curved plate and the palate tends to cause discomfort.

Examples of the constituent material of the curved plate 10 include, but are not limited to, denture base resin.

As shown in FIG. 10 , the attachment 201 that constitutes the intraoral fitting 100 is a convex body made of a cured resin adhered to the palatal side surface of the first molar L6 on the left side of the upper jaw (the tooth surface region covered by the upper surface 11 in the vicinity of the left edge 14 when the curved plate 10 is attached), and has a substantially hemispherical shape (dome shape) as shown in FIGS. 11A and 12A .

In addition, the attachment 202 that constitutes the intraoral fitting 100 is a convex body made of a cured resin that is adhered to the palatal side surface of the first molar R6 on the right side of the upper jaw (the tooth surface region that is covered by the upper surface 11 in the vicinity of the right edge 15 when the curved plate 10 is attached), and has a substantially hemispherical shape (dome shape) as shown in FIGS. 11B and 11B.

As a constituent material of the attachments 201 and 202, a cured resin obtained by curing a composite resin used as a molding repair material or the like can be mentioned.

As shown in FIG. 10, when viewed from the bottom of the attachment, the angle (α) between the direction of projection of the attachment 201 bonded to the palatal side surface of the first molar L6 and the direction of projection of the attachment 202 bonded to the palatal side surface of the first molar R6 is preferably 180°±20°, more preferably 180°±10°.
Thus, by pressing the curved plate 10 placed in the oral cavity against the upper jaw, it can be easily attached and removed.
Moreover, it is preferable that the attachment 201 and the attachment 202 are substantially located on the same plane parallel to the occlusal surface.

In the curved plate 10, a fitting recess 101 that fits with the attachment 201 is formed in a portion that covers the palatal side of the first molar L6, and a fitting recess 102 that fits with the attachment 202 is formed in a portion that covers the palatal side of the first molar R6.
The fitting recess 101 is a substantially hemispherical (dome-shaped) recess that can be fitted with the attachment 201 , and the fitting recess 102 is a substantially hemispherical (dome-shaped) recess that can be fitted with the attachment 202 .

The intraoral fitting 100 (the curved plate 10 and the attachments 201 and 202) of the present embodiment can be manufactured by either method [I] or method [II] below.

Method [I]:
(1) An impression of the user is taken and a model is made, and a curved plate material is made from a denture base resin based on the model thus obtained. Using a cutting tool such as an engine, a concave portion (fitting concave portion 101) is formed in the portion of the model that contacts the palatal side surface of the first molar L6 on the left side of the upper jaw of the model.

(2) The fitting recesses 101 and the fitting recesses 102 of the curved plate 10 produced in (1) above are coated with vaseline or the like for release treatment, and then filled with a photopolymerizable composite resin. Next, the curved plate 10 filled with the composite resin is mounted in the user's oral cavity, and the composite resin is irradiated with light to be cured. By removing the curved plate 10, the attachment 201 made of cured resin is transferred and adhered to the palate side of the user's first molar L6, and the attachment 202 is transferred and adhered to the palate side of the first molar R6.

Method [II]:
After the palatal side surfaces of the first molars L6 and R6 on the left and right sides of the user's upper jaw are etched with phosphoric acid or the like, a substantially hemispherical attachment material made of a photopolymerizable composite resin is attached to each of the palatal side surfaces, and the attachment material is irradiated with light to harden, thereby forming an attachment 201 adhered to the palatal side surface of the first molar L6 on the left side of the user's upper jaw, and the palatal side surface of the first molar R6 on the right side of the upper jaw. form an attachment 202 that is adhered to. Next, an impression of the user is taken and a model is made, and the curved plate 10 is made from a denture base resin based on the model thus obtained.

The curved plate 10 that constitutes the intraoral fitting 100 of the present embodiment is placed in the oral cavity and pushed up with a finger or the like as shown in FIG. Thereby, the curved plate 10 is fixed to the first molar L6 and the first molar R6 via the attachments 201 and 202, and is firmly attached at an appropriate position in the oral cavity.

As shown in FIG. 1, when the curved plate 10 is worn, the concave portion 143 abuts on the root of the maxillary left canine L3, the concave portion 144 abuts on the root of the first bicuspid L4, the concave portion 145 abuts on the root of the second bicuspid L5, and the concave portion 146 abuts on the root of the first molar L6.
Part of the palatal side surface (tooth surface area close to the gingiva) of the first premolar L4, the second premolar L5, and the first molar L6 is covered by the upper surface 11 in the vicinity of the left margin 14 forming recesses 144-146.

When the curved plate 10 is worn, the concave portion 153 abuts on the root of the maxillary right canine R3, the concave portion 154 abuts on the root of the first bicuspid R4, the concave portion 155 abuts on the root of the second bicuspid R5, and the concave portion 156 abuts on the root of the first molar R6.
A part of the palatal side surface (tooth surface area close to the gingiva) of the first premolar R4, the second premolar R5, and the first molar R6 is covered by the upper surface 11 near the right edge 15 forming recesses 154-156.

By attaching the intraoral attachment 100 (curved plate 10) in the oral cavity as described above, the amount of food F that can be put in the oral cavity at one time can be reduced, and a small amount of food can be sufficiently masticated. In addition, as described above, when the chewing action is sufficiently performed, the masseter muscle becomes active and stimulates the satiety center. For this reason, a moderate feeling of fullness can be obtained with a small amount of food. In other words, you can have a safe and reasonable diet.

According to the intraoral appliance 100 of the present embodiment, the curved plate 10 can be firmly attached via the attachments 201 and 202, and the curved plate 10 can be reliably prevented from coming off during eating.
In addition, the intraoral wearable device 100 has a well-balanced weight-loss effect by reducing the oral cavity volume and an effect of reducing discomfort when the curved plate 10 is worn.

Although one embodiment of the intraoral attachment device of the present invention has been described above, the present invention is not limited to these, and various modifications are possible.
For example, the convex shape of the attachment (concave shape of the fitting recess) may be a shape other than a (substantially) hemispherical shape, such as a conical shape, a pyramidal shape, a truncated conical shape, a truncated pyramidal shape, or a cylindrical shape.

In addition, the curved plate 10 at the time of attachment covers a part of the palatal side surface of the first premolar (L4, R4), the second premolar (L5, R5), and the first molar (L6, R6) by its left and right side portions.

Also, the attachment may be fixed to the palatal side surface of the artificial tooth (molar tooth) in the mouthpiece or denture.

Further, as shown in FIG. 14 , a jig insertion portion 18 into which a tip of a removal jig (not shown) can be inserted may be formed on the rear end side of the curved plate 10 .
In this jig insertion portion 18, the upper surface of the curved plate 10 is not in close contact with the hard palate and forms a space into which the tip of the removal jig is inserted.
According to such an intraoral attachment, the curved plate 10 can be easily removed by hooking the tip of the hook-shaped removal jig on the jig insertion portion 18 and peeling off the curved plate 10 from the hard palate.

In FIG. 14, one jig insertion portion 18 is formed near the right edge 15 on the rear end side of the curved plate 10, but the formation position and number of jig insertion portions are not limited to this.
For example, the jig insertion portion may be formed in the vicinity of the left edge 14 on the rear end side of the curved plate 10, or the jig insertion portion may be formed in the vicinity of the left edge 14 and the vicinity of the right edge 15 on the rear end side of the curved plate 10.
Furthermore, a jig insertion portion may be formed at any position on the front end side of the curved plate 10 .

REFERENCE SIGNS LIST 100 Intraoral appliance 10 Curved plate 101, 102 Fitting recess 11 Upper surface 12 Lower surface 13 Front edge 14 Left edge 143-146 Recess 15 Right edge 153-156 Recess 16 Rear edge 18 Notch 201, 202 Attachment HP Hard palate L3, R3 Canine tooth L4, R4 First Premolars L5, R5 Second premolars L6, R6 First molars

Claims (7)

a detachable curved plate that is attached to the oral cavity by covering at least part of the palatal side surface of the molar teeth and being brought into close contact with the hard palate;
a convex attachment fixed to the palatal side of each of at least a pair of molars facing each other across the midline;
An intraoral attachment, wherein the curved plate is formed with a fitting recess that can be fitted with each of the attachments when the curved plate is attached. 2. The intraoral appliance according to claim 1, wherein said attachment is fixed to the palatal side of a bicuspid or first molar. 2. The intraoral appliance according to claim 1, wherein the attachment is fixed to the palatal side of the first molar. In the bottom view of the attachment, the projecting direction of the attachment fixed to the palatal side surface of the left molar and the projecting direction of the attachment fixed to the palatal side surface of the right molar are 180 ° ± 20 °. The intraoral appliance according to any one of claims 1 to 4, characterized in that said attachment has a substantially hemispherical shape. The maximum thickness of the curved plate is 10 to 50% of the height of the hard palate,
The intraoral appliance according to any one of claims 1 to 5, wherein a rear edge of the curved plate is substantially straight when viewed from below. The intraoral appliance according to any one of claims 1 to 6, wherein the curved plate is formed with a jig insertion portion into which a tip of a removal jig can be inserted.

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