JPH04364838A - Artificial tooth having elastic buffer zone - Google Patents

Abstract

PURPOSE:To reduce local burden and oscillation of an artificial tooth by making any of thicknesses of a check-side surface balanced with the dental axis in the periphery of an elastic buffer zone provided externally or any of a lip-side surface, a tongue-side surface, a surface close to the center and a surface far from the center equal to or larger than the thickness near the center thereof. CONSTITUTION:First, a base bottom surface of an existing resin front tooth crown 1 is extended by about 3mm in the direction of a longer axis. To make the base bottom as elastic buffer zone 2 as a whole, this part is made of wax and fill with gypsum to produce a split die. A space formed by removing the wax is replaced with a thermoplastic elastomer by a thermal compression forming. After the cooling of the die, the elastic buffer zone 2 molded is taken out and mounted temporarily at the position as designed on the base bottom of the resin front tooth to produce a split die by filling it with gypsum again. An adhered surface of both the parts is ground off with proper material to be made fresh and coated with an adhesive. Then the gypsum die is heated up to 90-100 deg.C again and undergoes a compression molding and adhesion is made between the existing resin front tooth crown 1 and the elastic buffer zone 2.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to the structure and bonding of an artificial tooth for producing a denture with a pressure-relaxing function by externally installing an elastic body on the base surface of the crown of the artificial tooth and providing an elastic buffer band. Concerning drug composition and manufacturing method.

0002

[Prior Art] Traditionally, artificial teeth have been made of porcelain or resin, and the artificial teeth are arranged and implanted in the alveolar ridge of the denture and integrally molded with the denture base. It is known that the device is used by being attached inside the device. In actual denture manufacturing, artificial teeth are arranged and ground on an articulator based on bite registration and jaw movement records. If a series of these operations is performed properly, the completed denture should perform a balanced function in the oral cavity.

However, polymerization shrinkage and thermal shrinkage during denture base molding cause subtle changes in the occlusal relationship, making perfect adjustment difficult. In addition, when dentures are actually used, especially during mastication, the food bolus is present, which puts unbalanced pressure on the dentures, causing the dentures to move, resulting in damage to the mucous membranes and bone tissue under the denture base, which can lead to inflammation and inflammation. It often caused pain.

In order to avoid such problems, soft lining materials such as silicone rubber, fluoro rubber, or
A method of lining with rubber or soft resin such as ethylene vinyl acetate copolymer is known. However, the thickness of the lining material tends to become uneven during lining, making it difficult to equalize the pressure relief effect.
In addition, since the material is constantly exposed to saliva and the like, it is susceptible to bacterial adhesion and proliferation, making it easy to become unclean, and at the same time, it has the disadvantage of being susceptible to deterioration, discoloration, and peeling from the floor.

[0005]

[Problems to be Solved by the Invention] As described above, in dentures with a lining material, the entire floor mucosal surface is covered with rubber or soft resin, so the area that comes into contact with saliva, etc. is large, and It is necessary to solve the problem that the thickness is non-uniform. That is, it is necessary to minimize the area of the rubber or soft resin that comes into contact with saliva and the like, and to make the thickness uniform. Furthermore, in the case of ordinary dentures without a lining material, an excessive pressure burden caused by mastication is transferred to the tissue under the denture, causing pain. This invention is an invention for solving these problems all at once.

[0006]

[Means for Solving the Problems] As a result of intensive studies to solve these problems, the present inventor has developed an artificial tooth having an elastic buffer band structure in which an elastic body is externally provided on the crown base of the artificial tooth. The problem was solved through development. This will be explained in detail below.

[0007] Regarding the elastic buffer band structure of the present invention, the thickness of any one of the buccal side, labial side, lingual side, mesial side, and distal side parallel to the tooth axis at the edge of the external elastic buffer band is as follows:
It needs to be equal to or larger than the thickness near the center, so that the desired displacement can be freely given to the artificial tooth. The displacement is limited by the edges, making it impossible to achieve the purpose.

That is, no matter how large the thickness near the center is,
If the thickness at the edge is not ensured, the meaning of the elastic buffer band decreases, and as the thickness at the edge approaches zero, the function as an elastic buffer band approaches zero. Therefore, in designing an elastic buffer band, it is important to consider the mechanical properties of the elastic body as well as the balance between the stretch distance and the elastic modulus of the elastic body.

[0009] The artificial tooth of the present invention can be manufactured by using either a ready-made or homemade artificial tooth with an external elastic buffer band, and when molding a new artificial tooth, the elastic buffer band and There is a method of manufacturing by integral molding.

[0010] When using an existing artificial tooth and attaching an elastic body externally, the shape of the external elastic body is formed in wax according to a conventional method, and after it is embedded in plaster together with the artificial tooth, this wax is mixed with dental resin and an elastic body. A method of replacing the material with a body or an elastic body is advantageous.

[0011] When changing the crown length, it is necessary to first remove it with a suitable abrasive or to additionally mold the crown material.

When the artificial tooth is made of porcelain or porcelain, the artificial tooth and the elastic body are bonded together by cutting or hydrofluoric acid treatment to give a fresh surface, and a silane coupling agent such as γ-methacryloxypropyltrimethoxysilane or the like is applied. Pretreatment with vinyltriethoxysilane or the like is necessary to obtain adhesive strength that can be used in practical applications. Particularly in the case of ready-made porcelain teeth, they are always perforated porcelain teeth or porcelain teeth with bottles that have undercut holes or metal pins as retainers, but these should be used effectively without having to be removed. It is.

[0013] Most resin teeth are made of polymethyl methacrylate, but recently hard resin teeth, that is, those made of a composite of polyfunctional acrylate and organic or inorganic fillers,
Those made of polysulfone resin or polycarbonate resin are commercially available. However, when it becomes necessary to extend the crown base of these resin teeth, it is possible to apply the dental resin without any difficulty, and the complete integration is based on the material of the resin tooth. This is natural considering the solubility and polymerizability of methyl methacrylate, which is the main component of the dental resin liquid.

The elastic body used here is a thermoplastic elastomer such as styrene type (hard phase polystyrene, soft phase butadiene rubber or isoprene rubber), olefin type (hard phase polyethylene or polypropylene, soft phase butyl rubber or ethylene propylene and diene). (rubber-like copolymers with hard phase), PVC (hard phase crystalline polyvinyl chloride, soft phase amorphous polyvinyl chloride), urethane (hard phase urethane structure, soft phase polyester or polyether), ester (hard phase polyester, soft phase polyether or polyester), amide (hard phase polyamide, soft phase polyether or polyester), ethylene vinyl acetate copolymer (hard phase polyethylene, soft phase vinyl acetate)
, chlorinated polyethylene (hard phase crystalline polyethylene, soft phase chlorinated polyethylene), etc., as well as natural rubber and/or
Or synthetic rubber such as styrene butadiene rubber, acrylonitrile butadiene rubber, butyl rubber, chloroprene rubber, butadiene rubber, isoprene rubber, chlorosulfonated polyethylene rubber, silicone rubber, urethane rubber,
These include acrylic rubber, polyolefin rubber, etc., and are composed of one or more selected from these.

The adhesive used in the present invention is acrylic resin 3
~20%, rubber or thermoplastic elastomer 3-20%,
Aliphatic or/and aromatic radically polymerizable monomer 60-9
4%, polymerization or crosslinking catalyst 0.5-5% (external), and if necessary, this composition is usually diluted with a suitable solvent such as methyl ethyl ketone, acetone, toluene, cyclohexane, etc. use.

The acrylic resin used here is a copolymer of alkyl polyacrylates and alkyl polymethacrylates such as methyl, ethyl, propyl, butyl, and other radically polymerizable unsaturated monomers, and has a polymerization degree of 50.
Particles with a particle size of 10 to 50 μm, about 0 to 10,000,
It is suitable for dispersing and dissolving the monomer described below. Of course, it is also possible to use a product obtained by polymerizing these monomers in the form of a syrup under appropriate conditions instead of making them into granules.

[0017] Rubber or thermoplastic elastomer is used as the elastic material selected as the elastic buffer band. Use of other elastic bodies often causes trouble.

Examples of the aliphatic radically polymerizable unsaturated monomer include vinyl acetate, acrylonitrile, acrylic acid, methacrylic acid, metal (meth)acrylate [representing methyl acrylate and methyl methacrylate, the same shall apply hereinafter], and ethyl (meth)acrylate. , propyl (meth)acrylate, butyl (meth)acrylate, cyclohexyl (meth)acrylate, ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate,
Polyethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, polypropylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, 2-hydroxyethyl(meth)acrylate , hydroxypropyl (meth)
These include acrylate, allyl (meth)acrylate, and the like.

Examples of the aromatic radically polymerizable unsaturated monomer include styrene, divinylbenzene, α-methylstyrene, vinyltoluene, diallylphthalate, 2,2bis{
4-(meth)acryloxyethoxyphenyl}propane, 2,2bis{4-(meth)acryloxypolyethoxyphenyl}propane, 2,2{4-(meth)acryloxypropoxyphenyl}propane, 2,2{ 4-(meth)acryloxypolypropoxyphenyl}propane, etc.

Naturally, these monomers contain polymerization inhibitors such as hydroquinone, methoxyhydroquinone, and the like.

The proportion of the aliphatic or/and aromatic radically polymerizable monomer to be used is not particularly limited, but it is necessary to maintain a balance between the solubility of the rubber or thermoplastic elastomer in the monomer and the reactivity of the monomer. All you have to do is Approximately 1:1 ratio of methyl methacrylate to styrene can be preferably used.

[0022] As a polymerization or crosslinking catalyst, an organic peroxide,
Examples include methyl ethyl ketone peroxide, benzoyl peroxide, di-t-butyl peroxide, dicumyl peroxide, cumene hydroperoxide, and 2,4 dichlorobenzoyl peroxide.

Other additives such as accelerators, anti-aging agents, plasticizers, solvents, lubricants, and colorants can be selected and used as necessary.

[0024]

[Examples] Examples of the present invention are shown below. Note that the present invention is not limited to these. Example 1 To explain the implementation mode with reference to A in FIG. 1, the base surface of a ready-made resin anterior tooth crown 1 is extended by about 3 mm in the long axis direction, and in order to use this entire part as an elastic buffer band 2, wax is applied using a conventional method. A split mold is created by embedding the mold in plaster, and the space from which the wax has been removed is replaced with a thermoplastic elastomer by heat compression molding. As a thermoplastic elastomer, olefin-based "Sumitomo TPE1700" (manufactured by Sumitomo Chemical) is compression molded at 230°C. After the mold has cooled, take out the molded elastic buffer band 2, temporarily attach this elastic buffer band to the designed position on the base of the resin front tooth, and place it in plaster again to make a split mold, and make a layer of the adhesive surface between the two. Remove with a suitable abrasive to reveal a fresh surface.
Apply adhesive to that surface and place the plaster mold again at 90-100℃.
Heat it to 30 minutes and compression mold it to bond 1 and 2 together. The adhesive used in this case is 20 parts (by weight, hereinafter the same) of acrylic resin "Acricon AC" (manufactured by Mitsubishi Rayon), "Sumitomo T
PE1700” 20 parts, methyl methacrylate 30 parts,
25 parts of styrene, 5 parts of ethylene glycol diacrylate
A suitable amount of a mixture of 1 part of benzoyl peroxide, 50 parts of methyl ethyl ketone and 50 parts of toluene as a solvent was used.

Example 2 The embodiment will be explained with reference to A in FIG. 2. In order to extend the base surface of the crown 1 of a ready-made resin molar tooth by about 5 mm in the longitudinal direction, an extension part 4 is formed using wax according to a conventional method. Then, a split mold is made with plaster cast, and the space from which the wax was removed is replaced with dental resin. In order to provide an elastic buffer band 2 on the extended outer periphery with wax again, cover this with a thickness of about 2 mm and bury it in plaster to make a split mold. Styrene-based "Cariflex TR2109" is a thermoplastic elastomer.
(manufactured by Ciel Chemical) is compression molded at 200°C. After the mold has cooled, take out the molded elastic buffer band 2, remove one layer of the surface of the extension part 4 with a suitable abrasive material to expose a fresh surface,
Adhesive is applied to the surface, the elastic buffer band 2 is returned to its original position, and the plaster mold is again heated to 90 to 100°C and compression molded for 30 minutes to bond 2 and 4 together. The adhesive in this case is 5 parts of acrylic resin "methyl methacrylate (95%)-butyl acrylate (5%) copolymer", 5 parts of "Califlex TR2109", 40 parts of methyl methacrylate,
50 parts of toluene was used as a solvent for 50 parts of styrene and 1 part of benzoyl peroxide.

Example 3 The embodiment will be explained with reference to FIG. 3B. Similar to Example 1, a cylindrical or prismatic cavity is provided near the center of the base surface during wax formation, and the same process as in Example 1 is carried out. Alternatively, after completing an artificial tooth with an elastic buffer band, a round hole or the like may be bored near the center of the base surface using a suitable abrasive material. When used as a denture, the resin for the flooring enters these holes, which helps improve the bonding strength with the floor and has the effect of adjusting elasticity, especially preventing rolling.

Example 4 To explain the embodiment with reference to FIG. 3C, the base surface of the crown 1 of a ready-made resin molar tooth is extended by about 5 mm in the long axis direction, and this entire portion is covered with two layers of different hardness or elasticity. In order to create an elastic buffer zone, a part that will become the elastic buffer zone 5 is formed near the center of the basal surface using wax according to a conventional method, and a split mold is made by burying it in plaster. Ethylene vinyl acetate is added as a thermoplastic elastomer to the space from which the wax is removed. of copolymer
"Evaflex P-1405" (manufactured by DuPont Mitsui Chemicals) was compression molded at 150°C. The elastic buffer band 2 is again surrounded by wax to a thickness of 2 to 3 mm, and then embedded in plaster to form a split mold. "Evaflex P-2807" is compression molded at 150°C. After the mold has cooled, the molded and integrated elastic buffer bands 2 and 5 are removed. Remove one layer of the adhesive surface of the resin molar and the elastic buffer band with a suitable abrasive to expose a fresh surface, apply adhesive to that surface, return the elastic buffer bands 2 and 5 to their original positions, and re-cast the plaster mold. 1 and 2 by heating to 90-100℃ and compression molding for 30 minutes.
and bonding between 5 and 5. In this case, the adhesive is 10 parts of acrylic resin "Dyanal-64" (manufactured by Mitsubishi Rayon),
An appropriate amount of a mixture of 20 parts of "Evaflex P-2807", 40 parts of methyl methacrylate, 30 parts of styrene, 1 part of benzoyl peroxide, 25 parts of methyl ethyl ketone and 25 parts of toluene was used as a solvent. It is also possible to mold part 5 into a rod shape in advance, cut it to the required length, and mold it at the same time as part 2.

Embodiment 5 To explain the embodiment with reference to FIG. 5C, in order to reduce the crown length of a ready-made porcelain molar tooth, the removed portions 7 and 2 are removed from the crown base surface at a nearly right angle to the long axis direction. Remove the part with a suitable abrasive. The second part is formed with wax, embedded in plaster, the wax is removed, and urethane-based "Takelac T-385" is applied as a thermoplastic elastomer to the space.
” (manufactured by Takeda/Bardish Urethane Industries) is compression molded at 160°C. Once the molded elastic buffer band 2 is removed from the mold, the base surface of the porcelain molar is cut with an abrasive or treated with hydrofluoric acid to expose a fresh surface, and a silane coupling agent such as γ-
After treatment with methacroxypropyltrimethoxysilane and application of adhesive, the elastic buffer band 2 was returned to the mold and compression molded at 120° C. for 15 minutes. The adhesive composition is acrylic resin "methyl methacrylate (70%) - ethyl acrylate (30%)"
Copolymer” 20 parts, “Takelac T-385” 20 parts, methyl methacrylate 30 parts, vinyl acetate 5 parts, styrene 20 parts, γ-methacroxypropyltrimethoxysilane 3 parts, diethylene glycol dimethacrylate 2 parts, cumene hydroxyperoxide 1 An appropriate amount of toluene was used as a solvent. - As a method, after plaster is embedded and wax is removed, the base surface of the porcelain tooth is treated as described above, adhesive is applied, and "Takelac T-385" is placed at 160°C and
Another method is compression molding.

Example 6 To explain the embodiment with reference to FIG. 6, a desired artificial tooth shape with an elastic buffer band is made of wax, and molds 11, 12, and (11+1) [the portions 11 and 1 are the mold materials] are formed. (meaning, hereinafter the same) made of plaster or metal. Using mold 12 and mold (11+1), an elastic buffer band is compression molded at 150° C. using the same composition as in Example 4. Without taking out the molded product from the mold 12, change the mold (11+1) to the mold 11, and when the mixture of 3 parts of methyl methacrylate polymer and 1 part of the monomer, colored in the color of a molar crown, becomes cake-like, it is placed in the mold. Fill and compression mold at 100°C for 10 minutes. Of course, in order to further increase the adhesive strength, the same adhesive composition as in Example 4 was applied to the adhesive interface prior to filling the cake.

[0029] In molding in the same manner as in Example 6,
Examples will be shown in which the amounts of the elastic body and adhesive are changed. Example 7 Elastic body composition: Butadiene acrylonitrile copolymer rubber “Hiker 1042” (manufactured by Nippon Zeon) 10
0 parts, 0.3 parts of sulfur, 5 parts of zinc white, 1 part of stearic acid,
Accelerator TT (tetrathiuram disulfide) 0.5 part,
Accelerator CZ (cyclohexylbenzothiazyldisulfenamide) 2 parts, plasticizer DOP (dioctyl phthalate) 10 parts, diethylene glycol 2 parts, triethanolamine 2 parts, Carplex 67 (manufactured by Shionogi & Co., Ltd.) 5
0 copies. Molding conditions: 150°C for 15 minutes. Adhesive composition: appropriate amount of a mixture of 20 parts of acrylic resin, 20 parts of "Hiker 1042", 30 parts of methyl methacrylate, 30 parts of styrene, 1 part of benzoyl peroxide, 50 parts of solvent methyl ethyl ketone, and 50 parts of toluene.

Example 8 Elastic body composition: 50 parts of butyl rubber "Polyservyl 402" (manufactured by Polycer), 50 parts of natural rubber, 10 parts of "Sun Rubber Process Acid 521" (manufactured by Sun Rubber), 10 parts of zinc white, Whiten SB ( Shiraishi Kogyo) 60 parts, stearic acid 1.5 parts, diethylene glycol 2 parts, accelerator TT 2 parts, sulfur 1 part. Molding conditions: 160°C for 15 minutes. Adhesive composition: “Polyservyl 40
2'' 3 parts, natural bum 2 parts, acrylic resin 5 parts, methyl methacrylate 50 parts, styrene 40 parts, benzoyl peroxide 1 part.

Example 9 Elastic body composition: 100 parts of chloroprene rubber "Neoprene GN" (manufactured by DuPont), 2 parts of phenyl-β-naphthylamine, 4 parts of magnesia, 5 parts of zinc white, 5 parts of titanium oxide, and 3 parts of rutile. Molding conditions: 16
0℃ 15 minutes. Adhesive composition: 5 parts of "Neoprene GN", 5 parts of acrylic resin, 20 parts of methyl methacrylate, 40 parts of ethyl methacrylate, 10 parts of butyl acrylate, 20 parts of styrene, 1.5 parts of di-t-butyl peroxide.

Example 10 Elastic body composition: 100 parts of silicone rubber "SEl136U" (manufactured by Toray Silicone), 0.5 parts of catalyst "RC-4" (manufactured by Toray Silicone). Molding conditions: 160°C for 10 minutes. Adhesive composition: “SEl13
6E" 5 parts, acrylic resin 3 parts, methyl methacrylate 35 parts, γ-methacroxypropylmethoxysilane 20
37 parts of styrene, 0.5 parts of "RC-1" (manufactured by Toray Silicone), 0.2 parts of "RC-4", 5 parts of solvent toluene
0 copies.

Example 11 Elastic body composition: 100 parts of chlorosulfonated polyethylene rubber "Hypalon 40" (manufactured by DuPont), 20 parts of magnesia, 2 parts of accelerator TT, and 1 part of sulfur. Molding conditions: 150°C for 15 minutes. Adhesive composition: appropriate amount of a mixture of 10 parts of "Hypalon 40", 10 parts of acrylic resin, 50 parts of methyl methacrylate, 50 parts of styrene, 1 part of benzoyl peroxide, 2 parts of magnesia, 15 parts of solvent methyl ethyl ketone, and 35 parts of toluene.

[0034]

[Effect of the invention] When used as a denture, the artificial tooth with an elastic buffer band absorbs the local force applied during mastication and relieves the pressure, so the pressure is dispersed over the entire denture, and the local burden is extremely small. This significantly reduces denture movement and improves masticatory efficiency. This is particularly effective for patients with jawbone atrophy, which occurs in many elderly patients with debilitating diseases. In addition, compared to dentures in which the entire mucosal surface of the denture base is lined with an elastic material, the area where the elastic buffer band comes into direct contact with saliva is extremely narrow, so deterioration of the elastic material is significantly suppressed, resulting in unpleasant odors. This prevents the elastic body from peeling off or falling off during use, allowing it to maintain its functionality for a long period of time.

[Brief explanation of drawings]

FIG. 1 is a sectional view between the labial side and the lingual side of an artificial tooth for anterior teeth having an elastic buffer band according to the present invention, in which A and B are resin teeth, and C is a porcelain tooth with a pin as a retainer.

[Fig. 2] A cross-sectional view between the buccal side and the lingual side of the artificial tooth for the molar region having an elastic buffer band according to the present invention. B is the one in which the width of the extended portion is gradually increased, and C is the one in which the width of the extension portion is gradually increased.

[Fig. 3] Cross-sectional views between the buccal side and the lingual side of the artificial tooth for molars having an elastic buffer band according to the present invention, A shows a tooth with an elastic buffer band parallel to the tooth axis, and B shows a cavity near the center. In C, the hardness or modulus of elasticity is changed between the central part and the peripheral part of the elastic buffer band.

FIG. 4 is a cross-sectional view between the buccal side and the lingual side of a porcelain tooth for molars having an elastic buffer band according to the present invention, A shows the one in which the elastic buffer band is provided parallel to the tooth axis, and B shows the one in which the elastic buffer band is provided. Type C has a small convex portion, and C has a cavity near the center of the elastic buffer band, and a small concave portion.

FIG. 5 is a sectional view between the buccal side and the lingual side of the artificial tooth for molar region having an elastic buffer band according to the present invention, A and B are resin teeth, C
is a perforated porcelain tooth.

FIG. 6 is a sectional view between the buccal side and the lingual side of a mold for manufacturing a molar artificial tooth having an elastic buffer band according to the present invention.

FIG. 7 is a sectional view between the buccal side and the lingual side of a denture manufactured using the artificial tooth of FIG. 4B according to the present invention.

FIG. 8 is a sectional view between the buccal side and the lingual side of a denture manufactured using the artificial tooth of FIG. 5A according to the present invention.

[Explanation of symbols]

1 Artificial tooth crown 2 Elastic buffer band 3 Retention device metal pin 4 Extension part 5 Elastic buffer band 6 Denture base alveolar part 7 Deletion part 11 Type (labial type for anterior teeth, occlusal type for molars) 12 Type (Lingual and basal type for anterior teeth, basal type for molars)

Claims (7)

[Claims] 1. An artificial tooth characterized by having an elastic buffer band provided with an external elastic body on the base surface of the crown of the artificial tooth. 2. Is the thickness of any of the buccal, labial, lingual, mesial, and distal surfaces parallel to the tooth axis at the edge of the external elastic buffer band equal to the thickness near the center thereof? The artificial tooth according to claim 1, characterized in that it is larger. 3. The artificial tooth according to claim 1, characterized in that small convex portions and/or small concave portions are provided on the outside and/or inside of the externally provided elastic buffer band in a dotted manner and/or in a band-like or spiral shape. . 4. The artificial tooth according to claim 1, wherein the elastic buffer band provided externally on the base surface of the crown of the artificial tooth is made of a thermoplastic elastomer. 5. When externally installing an elastic body on the base surface of the crown of an artificial tooth, as an adhesive between the artificial tooth and the thermoplastic elastomer, acrylic resin 3 to 20% (the same applies below weight %), the thermoplastic elastomer 3 -20%, aliphatic or/and aromatic radically polymerizable unsaturated monomer 60-94%, and a polymerization or crosslinking catalyst 0.5-5% (however, the catalyst is applied externally), and adhesive treatment is performed. The method for manufacturing an artificial tooth according to claim 4, characterized in that: 6. The artificial tooth according to claim 1, wherein the elastic buffer band provided externally on the base surface of the crown of the artificial tooth is made of rubber. 7. When installing an elastic body externally on the base of the crown of an artificial tooth, the adhesive between the artificial tooth and the rubber is 3 to 20% acrylic resin, 3 to 20% of the rubber, aliphatic or/and aromatic. Claim 6, characterized in that the adhesive treatment is performed with a composition consisting of 60 to 94% of a group radically polymerizable unsaturated monomer and 0.5 to 5% of a polymerization or crosslinking catalyst (however, the catalyst is applied externally). Manufacturing method for artificial teeth.