JP4123917B2 - Dentures with gaps and utilizing suction force, and complete dentures - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a denture capable of controlling maintenance force, particularly a denture for a lower jaw, a complete denture including a lower jaw complete denture, and the like.
[0002]
[Prior art]
Conventional denture bases include an upper denture base and a lower denture base. The maxillary denture has a maxillary denture connected to the maxillary ridge and the subsequent mucous membrane and a maxillary denture implanted in a gum portion of a gum covering portion surrounding the maxillary denture base. Also, the denture base for the lower jaw is different from the denture base for the upper jaw, and there is no connecting part to avoid the tongue base of the tongue, and it is made in a horseshoe shape when viewed in plan view. A series of artificial teeth is provided.
[0003]
When trying to bite a hard one with the conventional denture base with such an anterior tooth, the denture base is often pulled forward and attached to the maxillary and mandibular ridges by surface tension due to saliva etc., respectively There was a problem that the floor was lifted back and the dentures were detached, and the floor was detached by the pulling force and jumped forward.
[0004]
In addition, there was a problem that the denture base for the lower jaw was easily detached from the front because the tongue root part pushed the front denture base for the lower jaw due to the action of trying to push the tongue forward. .
[0005]
For example, a complete denture with a suction cup is known as a complete denture (denture) that solves such a problem and has a high adsorbing force (see, for example, Patent Document 1). However, in such a complete denture, there is a problem that, as a result of trying to eliminate the gap between the suction cup and the gum as much as possible, the adhesion is actually weak, that is, the (pressure) suction force cannot be adjusted.
[0006]
In addition, a concave face with a chevron cross section that abuts against the denture of the denture base, that is, a thin closing valve membrane that has a continuous expansion and contraction elasticity from a substantially entire back surface to a predetermined width outside the edge piece. Complete dentures are known (see, for example, Patent 2). However, such complete dentures have problems such as insufficient adsorption force and inability to adjust the pressure.
[0007]
In addition, the upper jaw has a structure that forms a partial depression with effective suction for the upper jaw depression, and adsorbs it to the upper jaw surface of the mouth with the denture as a half-sack body and the peripheral edge as a sucker edge There are known dentures characterized by (see, for example, Patent Document 3). However, this complete denture is only characterized by the upper jaw part, and the lower jaw part is a normal one. Furthermore, in this example, there is a problem that the depression between the upper jaw (maxillary ridge) and the entire upper denture are adsorbed, and the pressure between the gums and the denture cannot be adjusted.
[0008]
[Patent Document 1]
JP-A-4-138154 [Patent Document 2]
Japanese Patent Laid-Open No. 11-47160 [Patent Document 3]
Japanese Patent Laid-Open No. 2001-61866
[Problems to be solved by the invention]
The first object of the present invention is to provide a denture excellent in adsorbing power to the gums (particularly a lower denture or a complete denture).
Another object of the present invention is to provide a denture (particularly a lower denture or a complete denture) that can control the adsorptive power between a gum and a denture.
Furthermore, another object of the present invention is to provide a complete denture that can be easily removed.
[0010]
[Means for Solving the Problems]
At least one of the above problems is solved by the following invention.
[0011]
(1) In a complete denture including a plurality of artificial teeth arranged and a horseshoe-shaped denture covering part that holds the plurality of artificial teeth and fits into a gum part in the oral cavity, the gum covering The part has a shape in which a gap portion exists between the gum and the gum, and has a bag in the gap portion, and the bag has a valve that allows gas to be taken in and out of the bag. It is a denture.
[0012]
The above denture includes a plurality of artificial teeth arranged, and a denture including a complete denture for the lower jaw that holds the plurality of artificial teeth and has a horseshoe-shaped gum covering portion that fits into a gum portion in the oral cavity. There is a gap between the covering portion and the gums . Such a complete denture is excellent in adsorptivity by controlling the adsorbing force of the gap portion, and can be easily removed and can be easily removed.
[0013]
(2) In the complete denture including a plurality of artificial teeth arranged and a mandibular denture having a horseshoe-shaped gum covering portion that holds the plurality of artificial teeth and fits into a gum portion in the oral cavity, the gum covering The portion has a shape in which a gap portion exists between the gums, and at least one of the plurality of artificial teeth has an open mouth on a surface facing the gum covering portion, There is a gap portion connected to the gap portion of the dressing portion, and there is a bag in the gap portion of the gum covering portion or the gap portion between the artificial tooth and the gum covering portion, and the bag has gas in the bag. It is a complete denture characterized by having a valve that can be taken in and out.
In the above-mentioned complete denture, at least one artificial tooth among the plurality of artificial teeth has a gap portion connected to the gap portion of the gum covering portion, having an open mouth on the surface facing the gum covering portion. . By taking such a structure, the void portion can be made larger than the above ( 1 ), and the controllable adsorption force can also be taken.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The denture according to the present invention is a denture having an artificial tooth and a gum covering part that fits into a gum part in the oral cavity, and the gum covering part has a shape in which a gap portion exists between the gum and the gum. It is a denture characterized by. The complete denture of the present invention is a denture for the lower jaw or the upper jaw having a plurality of artificial teeth arranged and a horseshoe-shaped gum covering part that holds the plurality of artificial teeth and fits into the gum part in the oral cavity, It is a shape in which a gap portion exists between the gum covering portion and the gum. Moreover, what has a valve connected to a space | gap part and what has a bag closely_contact | adhered to a space | gap part as a denture and a complete denture is a preferable aspect of this invention.
[0017]
The complete denture of the present invention can be used as a maxillary denture or a mandibular complete denture, but can be preferably used as a mandibular complete denture.
[0018]
(Shape of maxillary complete denture)
As the shape of the maxillary denture, a known shape can be adopted, for example, a groove-shaped gum covering part set in a horseshoe shape and covered with a raised gum part, and an intermediate space between the gum covering part Examples include a denture base composed of a maxillary joint portion that closes a place and is surface-bonded to the inner surface of the maxillary portion in the oral cavity, and a shape having a plurality of artificial teeth.
In order to reduce discomfort even with the upper denture, it may be horseshoe-shaped. However, advanced technology is required to produce such a denture. Therefore, the upper denture which usually requires a connection part is produced.
[0019]
(Shape of lower denture complete denture)
The shape of the lower denture complete denture will be described with reference to FIG. As the shape of the complete denture 1 for the lower jaw, a known shape can be adopted as shown in FIG. 1 (a), for example, a groove-shaped gum cover that is set by covering a gum portion that is raised in a horseshoe shape. The shape which has a part (denture base 3) and the some artificial tooth 2 is mentioned.
[0020]
(Artificial teeth)
As the shape of the artificial tooth 2, a known shape suitable for an individual tooth or a plurality of teeth can be used. As a material of the artificial tooth, a known artificial tooth material can be used, and examples thereof include plastic, ceramic resin teeth, hard resin teeth, porcelain teeth, and the like. Among these, those subjected to antibacterial treatment (such as titanium oxide mixed in the material) with titanium oxide or the like are preferable. The artificial tooth can be manufactured using a known method.
[0021]
(Cross-sectional shape)
A cross section (side surface) of the denture, the lower jaw, and the upper denture (hereinafter also simply referred to as “denture”) will be described with reference to FIG. The denture includes, for example, an artificial tooth and a denture base. Dentures or complete dentures can be obtained by integrally molding these. As the cross-sectional shape of the artificial tooth, a well-known artificial tooth shape can be adopted, but one having the gap portion 4 shown in FIG. It is preferable that the space | gap part of an artificial tooth is a shape united with the space | gap part provided in the denture base. This is because such a structure can prevent saliva and food residue in the oral cavity from entering the artificial tooth.
[0022]
The larger the gaps 4 and 5 of the dentures and the complete dentures, the larger the adsorbable pressure that can be adjusted between the artificial tooth 1 and the gum 6, which is preferable, but the strength of the dentures is weakened. Accordingly, the (total) volume of the gap portions 4 and 5 is preferably 1/100 to 99/100, more preferably 1/10 to 9/10, of the denture volume (including the gap portion). More preferably, it is 1/5 to 8/10, and particularly preferably 1/2 to 7/10.
[0023]
(Resin for denture base)
As the denture base resin, a known denture base resin can be used. Examples of the denture base resin include those mainly composed of acrylic resin, methacrylic resin, polycarbonate resin, and the like. A material in which auxiliary materials such as a coating agent, an antibacterial agent, and a coloring agent are appropriately mixed is more preferable. Examples of the filler include carbon fiber and silicon. Examples of the antibacterial agent include zinc oxide and calcium hydroxide.
[0024]
(valve)
At least one or more artificial teeth in the series of artificial teeth, or at least one portion of the gum covering portion is connected to a gap portion of the artificial tooth or a gap portion of the gum covering portion, and a complete denture is attached. It is preferable that a valve 7 capable of sucking air existing in the gap portion is provided.
[0025]
The valve is not particularly limited as long as it has a structure that does not allow air from outside to enter the gap after the air in the gap is sucked, and a known valve can be used. Examples of such a valve structure include a valve structure used for a futon compression bag as described in JP-A-8-11942 and a structure like an air vent attachment described in JP-A-10-194230. And a valve having. Among these, the air vent attachment (to provide an air vent hole in a sealed bag body, to provide an air vent tube with a sharp edge processed, and to prevent the sharp edge processed tip from touching the contents of the bag body. An air vent attachment) characterized in that the protective body is provided so as to be detachable is more preferable.
[0026]
(bag)
It is preferable that a bag (not shown) exists in the gap portion of the gum covering portion or the gap portion between the artificial tooth and the gum covering portion. It is more preferable that the bag is provided with a valve capable of taking in and out a gas such as air.
Such a bag can be manufactured using, for example, a known polymer having good adsorptivity with a gum. The bag is preferably in close contact with the gap. After mounting the complete denture, the adsorptivity between the complete denture and the gum can be controlled by controlling the amount of air extracted from the bag provided in the gap.
[0027]
(Method for manufacturing complete dentures)
The complete denture of this invention can be manufactured in accordance with a well-known method. As an example of the manufacturing method of the complete denture of the present invention, impression acquisition, model preparation, foundation floor preparation, occlusal floor preparation, occlusion acquisition, articulator placement, artificial tooth arrangement, gingival formation, trial placement of wax denture, implantation, Examples thereof include a method for producing a complete denture through processes such as flow brazing, resin filling, polymerization hardening, removal, and final polishing.
The occlusal acquisition is preferably performed using a so-called occlusal floor, which is made by raising wax, in order to plant artificial teeth on a base floor prepared in accordance with the shape of the patient's jaw ridge. In other words, the occlusal floor is mounted in the patient's mouth, and the occlusal height, occlusal plane, anterior tooth length, lip bulge, etc. are shaved or added to the occlusal levee while assuming a complete denture. It is preferable to determine the positions of the upper, lower, front, rear, and left and right by shaping into an appropriate shape, mounting the upper and lower occlusal floors in the oral cavity, and biting.
[0028]
(Function)
The denture of the present invention is mounted, and air in the gap (or in the bag) is sucked from the valve using a vacuum device (suction means) such as a dropper. Then, the adsorptivity between the complete denture and the gum increases, and if the suction of air is stopped at an appropriate pressure, the pressure on the complete denture and the gums becomes appropriate. Furthermore, by opening the valve, the complete denture is easily detached from the gums.
[0029]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the denture excellent in the adsorptive power with a gum (especially mandibular denture and dentures) can be provided.
Moreover, according to this invention, the dentures (especially mandibular denture and dentures) which can control the adsorptive power of a gum and a denture by adjusting the air quantity and pressure in a space | gap can be provided.
Furthermore, according to the present invention, it is possible to provide a denture that can be easily removed by opening a valve or the like (particularly a lower denture or a complete denture).
[Brief description of the drawings]
FIG. 1 (a) is a diagram showing an example of a complete denture (mandibular complete denture) of the present invention. FIG.1 (b) is a figure which shows an example of the cross section (side) figure of the artificial tooth and denture of this invention.
[Explanation of symbols]
1 (for lower jaw) complete denture 2 artificial tooth 3 denture base 4 gap 5 gap 6 gum 7 valve

Claims (2)

A plurality of artificial teeth lined up,
In a complete denture including a denture for the lower jaw holding a plurality of artificial teeth and having a horseshoe-shaped gum covering part that fits into a gum part in the oral cavity,
The gum covering portion is a shape in which a gap exists between the gums,
A denture having a bag in the gap, and a valve in the bag capable of taking gas into and out of the bag. A plurality of artificial teeth lined up,
In a complete denture including a denture for the lower jaw holding a plurality of artificial teeth and having a horseshoe-shaped gum covering part that fits into a gum part in the oral cavity,
The gum covering portion is a shape in which a gap exists between the gums,
At least one artificial tooth among the plurality of artificial teeth has an open mouth on the surface facing the gum covering part, and has a gap part connected to the gap part of the gum covering part,
It has a bag in the gap part of the gum covering part or the gap part between the artificial tooth and the gum covering part, and the bag has a valve that allows gas to be taken in and out of the bag. Complete denture.

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