WO1999045859A1 - Pivot dentaire, renforcement de materiau de noyau pour la fabrication d'un pivot dentaire et kit permettant la fabrication d'un pivot dentaire - Google Patents

Pivot dentaire, renforcement de materiau de noyau pour la fabrication d'un pivot dentaire et kit permettant la fabrication d'un pivot dentaire Download PDF

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Publication number
WO1999045859A1
WO1999045859A1 PCT/JP1999/001142 JP9901142W WO9945859A1 WO 1999045859 A1 WO1999045859 A1 WO 1999045859A1 JP 9901142 W JP9901142 W JP 9901142W WO 9945859 A1 WO9945859 A1 WO 9945859A1
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WO
WIPO (PCT)
Prior art keywords
support shaft
dental
dental abutment
fiber
fixing member
Prior art date
Application number
PCT/JP1999/001142
Other languages
English (en)
Japanese (ja)
Inventor
Narimichi Honda
Fumio Nishimura
Yutaka Oda
Shunji Fukushima
Nobuo Masaka
Original Assignee
Sun Medical Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sun Medical Co., Ltd. filed Critical Sun Medical Co., Ltd.
Priority to JP53237999A priority Critical patent/JP4413281B2/ja
Publication of WO1999045859A1 publication Critical patent/WO1999045859A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/30—Fastening of peg-teeth in the mouth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
    • A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds

Definitions

  • the present invention relates to a dental abutment (dental boss), a core material for forming such a dental abutment, and a kit for forming a dental abutment.
  • Dental abutments are usually inserted into the roots of the pulp from which the pulp has been removed, and serve as a foundation, such as a denture (crown).
  • the dental abutment 1 is a support shaft that is implanted at the root of the tooth.
  • the dental support 1 has a core part 1a that is joined to a crown or the like due to its function. And a core 1b for fixing the core 1 to the tooth root.
  • the role of the dental abutment 1 is to insert the dental abutment 1 into the root of the tooth when the structure of the crown alone (for example, the crown 2) alone does not have sufficient holding power, and
  • the structure of the crown portion is structurally connected to the core portion 1a of the dental abutment 1 so that the crown structure is less likely to fall off the tooth 3.
  • a dental abutment is usually formed by setting the inside of a tooth with an adhesive (joining material) such as a resin-based adhesive or a cement for cementing.
  • an adhesive jointing material
  • a material for forming a dental abutment metal, ceramic, carbon, resin, or a composite material combining these materials has been used. I have.
  • the post has grooves or screws formed at right angles to the insertion direction of the dental abutment to prevent the structure of the crown from falling off after the dental abutment is set. Often have been.
  • the form of the root canal to be perforated is not constant because various conditions overlap.
  • the tooth to be pierced is a living tissue
  • the shape of the root canal formed by piercing is inherently indefinite, and has a geometric shape that matches the shape of the cutting tool. Not a form. For this reason, there may be a case where a dedicated cutting tool does not produce sufficient cutting or, conversely, excessively deletes healthy tooth material. As a result, in the former case, poor compatibility of the ready-made post occurs, and in the latter case, the roots are weakened.
  • the shape of the post holes and the like were sampled (impression sampling), and a boss fabricated to fit the sampled shape was collected.
  • the method used is also employed. According to this method, no matter what kind of post hole is formed, the post is formed in the form of the post hole, so that the above-mentioned problem hardly occurs.
  • the method using the above-mentioned existing post and the method using the artificial post are used. Both methods increase the risk of accidents such as falling off or broken roots if the attached post is not adhered to the tooth root by the adhesive filler. To do so, the surface of the post must be modified to make it suitable for bonding with the filling material. For the surface modification of such bosses, sand blasting, tin plating, application of an adhesive primer, or a combination of these methods is used. Each of the reforming methods has a problem that complicated operations are required.
  • the form of the root canal to be perforated is not constant because various conditions overlap.
  • the shape of the root canal is originally indefinite and not a geometrical shape that matches the shape of the cutting tool. For this reason, there may be some areas where the cutting tools are not enough.
  • the tooth is bound from inside using a suitable supporting member. Quality is unified), a certain degree of strength is developed. It is said that in dental treatment, it is more desirable to perform treatment using the original tooth quality of the patient than to replace the tooth material, which is an artificial material.
  • the above-mentioned existing or forged posts are all made of metals or alloys such as Co-Cr-Ni alloys, gold, and silver. Such metals or alloys and the tooth material have significantly different elastic moduli, and this difference in the elastic moduli causes adhesive failure.
  • the elastic modulus of the metal of the boss is about 5 to 10 times the elastic modulus of the root dentin. For this reason, if such a post is worn in the oral cavity and a mastication force is applied, a difference occurs in the “radius” state between the boss and the root dentin.
  • This differential force 5 'in the radius state is one of the factors that cause the adhesion failure between the post and the tooth root.
  • stress concentration at the boundary between the upper part of the root where the metal post is present and the lower part of the root where no metal post is present is inevitable. As a result, there have been reports of root fractures at this boundary.
  • the dental abutment is not set inside the tooth assuming that it is to be removed.
  • an excessive force is applied when the dental abutment is removed, and the tooth may be broken or may be damaged.
  • the present invention has been made to solve these problems of the conventional abutment structure, and has an object to provide a new abutment structure, an abutment construction material, and an abutment construction kit. ing.
  • Another object of the present invention is to provide a dental abutment which can be easily removed from a part which does not damage a human body when re-treating a tooth.
  • Another object of the present invention is to provide a dental abutment (dental post) that can be securely inserted into a post hole formed in a tooth material.
  • the dental abutment of the present invention is a dental abutment that can be inserted into an apical portion and fixed to a tooth with a dental adhesive,
  • the dental abutment comprises a support shaft (post portion) inserted into the apex and a tip (core) formed at the tip of the support shaft. It has a core material that connects the tip and the support shaft,
  • the core material is a material that is of the core material.
  • a support shaft fixing member that is vertically movably fitted with the support shaft at least using the support shaft as a movable shaft.
  • the dental abutment (fiber-containing dental abutment) of the present invention comprises an acrylic organic matrix (A), an inorganic fiber and / or an organic fiber (B), and a polymerizable polymer.
  • (Meta) It is characterized by being manufactured from a filler (C) composed of an acrylate ester (a) and a polymerization initiator (b).
  • the above-mentioned fiber-containing dental abutment is constructed using a reinforcing core material for building a dental abutment, and the reinforcing core material for building a dental abutment is made of an acrylic organic matrix.
  • A and inorganic fibers and / or organic fibers (B), and the acrylic organic matrix (A) is composed of inorganic fibers and / or organic fibers (B).
  • the fiber-containing dental abutment is composed of an acrylic organic matrix (A) and inorganic fibers and / or organic fibers (B).
  • a reinforcing core material for constructing a dental abutment in which the matrix (A) is impregnated with inorganic fibers and / or organic fibers (B); and a polymerizable (meta) ester acrylate It can be constructed by using a dental abutment construction kit characterized by being composed of a) and a filler (C) composed of a polymerization initiator (b).
  • the reinforcing core is formed by impregnating the polymerizable monomer (A) and integrating the fibers, and the reinforcing core is firmly adhered to the filler (C). To form an abutment. Since this abutment has the same physical and mechanical properties as the elastic modulus and the like, it absorbs this stress as much as the tooth when stress such as mastication force is applied. Stress and strain do not accumulate at the boundary with the tooth material and adhere to the tooth material stably for a long period of time I do.
  • a polymerizable monomer remains on the surface of the abutment manufactured using the reinforcing core material of the present invention and the filler (C), and subsequently, the dental adhesive, which is a dental adhesive, is used.
  • resin cement usually a mixture of a polymerizable monomer (A), a polymerization initiator (B) and a filler that has a high adhesive performance to teeth
  • the residual polymerizable monomer is copolymerized with the polymerizable monomer of the dental adhesive resin cement, so that the tooth-to-dental adhesive resin cement / abutment structural material is firmly integrated.
  • the completed abutment is temporarily immersed in an organic solvent such as acetate, and the polymerized monomer eluted is subjected to gas chromatography.
  • an organic solvent such as acetate
  • a method of analyzing using high-performance liquid chromatography or high-performance liquid chromatography is preferably used.
  • the material for constructing an abutment of the present invention after curing, has a physical property and a mechanical property such as an elastic coefficient, because the polymerizable monomer and the reinforcing core material are integrated into a composite.
  • the control is very easy. Therefore, the physical and mechanical properties such as the elasticity coefficient of the abutment can be changed according to various situations so that the effect of the dental treatment is further enhanced.
  • the reinforcing core material for abutment construction used in the present invention is a structure that is well suited to the root of a tooth, because the tooth itself is usually hardened as a ⁇ shape in the oral cavity.
  • the dental abutment (a dental abutment with a metal wire) of the present invention includes a core portion and a boss portion which are inserted into a tooth having a root apex filled with a root canal filler.
  • a dental abutment, One or more metal wires are arranged from the center of the top of the core to the center of the post in the vertical direction.
  • the tip of the metal wire extends to or near the surface of the root canal filling material.
  • metal wire a metal wire made of stainless steel, a nickel chromium alloy, a nickel chromium alloy or a titanium alloy is preferable.
  • the thickness of the metal wire is desirably 0.05 to 3 mm.
  • the elastic modulus of the metal wire is desirably in the range of 10 to 500 GPa.
  • the elongation of the metal wire is desirably 100% or less.
  • the pull-out strength of one metal wire from the dental abutment is preferably from 0.05 to: L 0 kg from the viewpoint of ease of pull-out (JISG 3101, JISG 4305).
  • an acrylic material containing a polymerizable (meth) acrylic acid ester (a) and a polymerization initiator (b) may be used as a material of the dental abutment formed around the metal wire.
  • a composite material (composite resin material) in which the organic matrix (A) and the filler (B) are combined is preferable.
  • the dental abutment (a dental abutment with a support shaft fixing member) of the present invention is implanted in the tooth by inserting a base end into a boss hole formed in the tooth.
  • a support shaft fixing member which is located near the tip of the support shaft and which is vertically movably fitted with the support shaft as a movable shaft. I have.
  • the dental abutment (dental post) with the support shaft fixing member of the present invention has a By inserting the base end into the boss hole drilled in the material and implanting it in the tooth material and moving it to the base end of the support shaft after implantation, the support shaft is And a support shaft fixing member fixed to the hole.
  • the dental adhesive is filled into the post hole and the support shaft is inserted. Therefore, the support shaft is formed with almost no void.
  • the shaft is inserted into the boss hole so that it can adhere to the tooth material. At the same time, excess dental adhesive is pushed up above the post holes.
  • the support shaft fixing member when the support shaft fixing member is pushed down in the direction of the base end of the support shaft, the support shaft fixing member is brought into close contact with the inner peripheral wall of the tooth substance by the pushed-up dental adhesive.
  • the support shaft can be adhered and set up almost at the center of the post hole formed.
  • the support shaft fixing member is firmly adhered and fixed to the inner periphery of the boss hole formed in the tooth material and the support shaft by the dental adhesive, so that the support shaft is firmly attached to the post hole. Glued.
  • FIG. 1 is a schematic sectional view of a conventional dental abutment.
  • FIG. 2 is a view schematically showing a state in which a filler (C) is put into a root canal.
  • FIG. 3 is a diagram showing a state in which a reinforcing core material is put in the filler (C).
  • Fig. 4 schematically shows a state where the abutment in which the reinforcing core material and the hardened filler are integrated is removed from the root canal after the filler (C) has hardened. It is.
  • Fig. 5 is a diagram schematically showing a state in which the tooth surface has been pretreated with an acidic pretreatment agent (such as an aqueous solution containing 10% by weight of citric acid and 3% by weight of ferric chloride). is there.
  • an acidic pretreatment agent such as an aqueous solution containing 10% by weight of citric acid and 3% by weight of ferric chloride.
  • FIG. 6 is a diagram schematically showing a state in which the abutment is again inserted into the root canal and adhered.
  • FIG. 7 is a diagram schematically showing a state where a crown and the like are fixed to a fixed abutment.
  • FIG. 8 is a schematic sectional view showing an example of the dental abutment according to the present invention.
  • FIG. 9 is a sectional view showing an example of a sectional structure of the dental post of the present invention.
  • FIG. 10 is an explanatory diagram showing an example of use of the dental post of the present invention.
  • FIG. 11 is a sectional view showing another embodiment of the dental boss of the present invention.
  • FIG. 12 is a sectional view showing another embodiment of the dental boss of the present invention.
  • FIG. 13 is a cross-sectional view showing a use state of the dental post shown in FIG.
  • FIG. 14 is a perspective view of the test piece manufactured in Example 1 of the present invention.
  • the dental abutment of the present invention is a dental abutment that can be inserted into an apical portion and fixed to a tooth with a dental adhesive.
  • This dental abutment is supported by a support shaft (boss) inserted into the apex.
  • a tip (core portion) formed at the tip of the support shaft is provided at the tip of the support shaft, and has a core material for communicating the tip of the dental abutment with the support shaft. And this core material,
  • a support shaft fixing member that is vertically movably fitted with the support shaft at least using the support shaft as a movable shaft.
  • the fiber-containing dental abutment of the present invention is an acrylic organic matrix.
  • the reinforcing core material for constructing a dental abutment is made of an acrylic organic matrix (A) and inorganic fibers and Z or organic fibers (B).
  • the acryl-based organic matrix (A) is polymerizable (mechanical).
  • T A curable composition containing an acrylic acid ester (a) and a polymerization initiator (b).
  • the polymerizable (meth) acrylic acid ester (a) used in the present invention includes a monofunctional polymerizable monomer and a polyfunctional polymerizable monomer.
  • a (meth) acrylate-based monomer (al) is preferred.
  • Examples of this (meta) acrylate-type monomer (al) include methyl (meta) acrylate, ethyl (meta) acrylate, and butyl.
  • Examples include (meta) acrylates having a heterocyclic ring such as tetrafurfuryl (meta) acrylate.
  • polyfunctional polymerizable monomers examples include ethylene glycol (meta) acrylate, propylene glycol (meta) acrylate, and butyrate. Glycolate (meta) acrylate, neopentry liquefaction (meta) acrylate, hexylene glycol (meta) acrylate, trilaterate All-in-one poly (poly) such as methylo-pro-entry (meta) acrylate, penta-erythrite liter (meta) acrylate, etc. Meta) Accurate,
  • R represents a hydrogen atom or a methyl group, m and n each represent 0 or a positive number, and R 1 is an aromatic group described below.
  • R represents a hydrogen atom or a methyl group
  • n represents 0 or a positive number
  • R 1 represents one (CH 2 ) 2 —,-(CH 2 )
  • polyfunctional (meta) acrylates having a urethane bond in the molecule represented by the following formula can be mentioned.
  • R represents a hydrogen atom or a methyl group
  • R 1 represents (CH 2 ) 2 , 1 (CH 2 ) 4 1,-(CH 2 ) 6 —,
  • monofunctional polymerizable (meth) acrylates include methyl (meth) acrylate and ethyl (meth) acrylate.
  • Alkyl (meta) acrylates such as latex, 2-hydroxyshetyl (meta) acrylate, 1,3-dihydroxypropylmono (meta) acrylate Acrylate, erythritol mono (meta) hydroxy-containing (meta) acrylate such as acrylate, triethylene glycol monomethyl ether (Meta) acrylate, triethylene glycol Mono (meta) Ethylene glycol chain in molecule such as acrylate (meta) Acrylate, 1, 6 — screw (metal (Rubonilamino) -2,2,4- (or -2,4,4-) trimethyl hexane is particularly preferably used.
  • polyfunctional polymerizable (meth) acrylic acid esters include triethylene glycol (meta) acrylate, polyethylene glycol, and the like.
  • R represents a hydrogen atom or a methyl group, and m + n is 2 to 20.
  • R represents a hydrogen atom or a methyl group.
  • R represents a hydrogen atom or a methyl group.
  • the acrylic organic matrix (A) may contain a polymerizable monomer (a2) having an acidic group in the molecule.
  • a polymerizable monomer having an acidic group in the molecule By using a polymerizable monomer having an acidic group in the molecule, the adhesive performance with reinforcing fibers, inorganic materials and dentin can be greatly improved.
  • New Specific examples of the polymerizable monomer having an acidic group in the molecule (a2) include:
  • P-styrene sulfonate 2-acrylamide-2-methylprono.
  • Monomers containing a sulfonate group such as sulfonate can be mentioned. Of these, monomers containing a carboxylic acid group are preferred, and
  • the above-mentioned polymerizable acrylic ester (al) is contained in the above-mentioned acrylic organic matrix (A), and if necessary, a polymer having an acidic group in the molecule.
  • the force containing the functional monomer (a2) which may be contained as a monomer, or a partially polymerized product thereof.
  • the acrylic organic matrix (A) used in the present invention contains a polymerization initiator (b).
  • a polymerization initiator examples include an organic peroxide, an inorganic peroxide, a boron-containing polymerization initiator, an ⁇ -diketon compound, an organic amine compound, an organic sulfonic acid, and an organic sulfur. Phosphates, inorganic sulfur compounds, organophosphorus compounds and barbituric acids can be mentioned. One or more of these can be used.
  • these polymerization initiators include a room temperature chemical polymerization type, a photopolymerization type, or a composite dual type thereof.
  • the peroxides used in the room temperature chemical polymerization type include, for example, diacetyl peroxide, dipropyl peroxide, dibutyl peroxide, dipropyl peroxide, dilauric peroxide, and the like.
  • an organic boron compound or a composition containing the same can be generally mentioned.
  • the organoboron compound include triethylboron, tripropylboron, triisopropylboron, tributylboron, trisec-butylboron, triisobutylboron.
  • tributylboron As partially oxidized tributylboron, for example, tributylboron 1 mole Preferably, 0.3 to 0.9 moles of oxygen are added to the compound.
  • organoboron compounds are preferably used in an amount of 0.1% to 50% by weight based on the polymerizable component contained in the acrylic organic matrix (A). Used in quantity.
  • the polymerization initiator used in the photopolymerization type is a polymerization initiator that can be photopolymerized by irradiating ultraviolet light or visible light.
  • the polymerization initiator that can be used in such photopolymerization examples thereof include benzyl, 4,4'-dichlorobenzyl, benzoin, and benzoin methyl ether.
  • Polymerization initiators that can be photopolymerized by irradiating ultraviolet light or visible light include those in the acrylic organic matrix (A). It is preferably used in an amount ranging from 0.01% to 5% by weight, based on the polymerizable component.
  • a reducing compound can be used in combination.
  • the organic reducing compound for example, N, N-dimethylylaniline, N, N-dimethyl-p.toluidine (DMPT), ⁇ , ⁇ -getyl- ⁇ -toluidine , ⁇ , ⁇ -diethanol-p.
  • the acrylic organic matrix (A) used in the present invention can be used in combination.
  • the acrylic organic matrix (A) used in the present invention in order to reliably cure the acrylic organic matrix (A) used in the present invention, and to further improve the adhesion to reinforcing fibers, inorganic materials and dentin. It is preferable that at least one of the amide compound represented by the following formula [I] or the amine compound represented by the following formula [II] is contained.
  • R 1 and R 2 are each independently a hydrogen atom or an alkyl group which may have a functional group or a substituent.
  • 3 is a hydrogen atom or a metal atom.
  • R 4 and R 5 are each independently a hydrogen atom or an alkyl group
  • R 6 is a hydrogen atom or a functional group or a substituent. It may have an alkyl group or a similar alkoxyl group.
  • amine compounds are incorporated into the acryl-based organic matrix (A), preferably in an amount in the range of 0.01 to 5% by weight.
  • Examples of the amine compound represented by the formula [I] include NPG, NTG and NPG-GMA. Of these, NPG is particularly preferably used.
  • Examples of the amine compound represented by the formula [II] include N, N-dimethylaminobenzoic acid and its alkyl ester N, N-dimethylaminobenzoic acid (DEABA) and its alkyl ester Besides, N, N-dipropylaminobenzoic acid and its alkyl ester, N-isopropylaminobenzoic acid and its alkyl ester, N-isopropylpropyl-N-methylaminobenzoic acid and Aliphatic alkylaminobenzoic acid represented by its alkyl ester and its alkyl esters; DMA BAd, N, N-Getylaminobenzaldehyde, N, N-Dipropylaminovenzaldehyde , N-isopropyl-N-methyl-aminobenz
  • Examples of the reducing compound that may be used in the present invention include benzenesulfinic acid, 0-toluenesulfinic acid, and p.toluenesulfuric acid.
  • Aromatic sulfinic acids such as diacid, ethylbenzensulfuric acid, decylbenzenesulfinic acid, dodecylbenzenesulfuric acid, chlorobenzenesulfinic acid, and naphthalenesulfinic acid Or salts thereof can be used in combination.
  • a sulfur-containing reducing inorganic compound can be preferably used.
  • a reducing inorganic compound used as a redox polymerization initiator when polymerizing a radical polymerizable monomer in a medium such as water or an aqueous solvent is preferable.
  • examples thereof include sulfurous acid, bisulfite, metasulfite, metabisulfite, pyrosulfite, thiosulfuric acid, dithionous acid, 1,2 thionic acid, hyposulfite, hydrosulfite and salts thereof.
  • reducing inorganic compounds can be used alone or in combination.
  • These reducing inorganic compounds are:
  • the weight of the polymerizable component in the P-acrylic organic matrix (A) is 0.01 / 0 . Used in amounts in the range of ⁇ 5% by weight.
  • the reinforcing core material for dental abutment construction used in the abutment construction according to the present invention includes an acrylic organic matrix (A) as described above, and an organic fiber or an organic fiber. It consists of inorganic fibers (B).
  • organic fibers include acrylic fiber, acetate fiber, copper ammonia fiber, and polyamide fiber (eg, Nylon 46 fiber, Nylon 6 fiber, Nylon 6 fiber).
  • the inorganic fibers used in the present invention are, for example, Aluminum Na (Al 2 0 3), Jill co two ⁇ (ZrO 2), mosquito Cie U arm A Le Mi Natick preparative (CaO-Al 2 0 3 system ) and Aluminum Roh Shi Li Ke one preparative (Na 2 0-A1 2 0 3 -SiO 2 system) in vivo inert oxides such as; force - Bonn (virtous, pyrolytic, graphite), silicon nitride ( Si 3 N 4) and in vivo inert non-oxide such as silicon carbide (SiC);.
  • Fibers are rather preferred, fibers with a biocompatible to the al, for example, CaO-P 2 0 5 -Si0 2 -Al 2 0 3 based biomaterials for glass fibers (CPSA glass fibers), especially preferred correct fiber in the present invention.
  • CPSA glass fibers the molar ratio of calcium norine in the fiber is usually in the range of 0.5 to 3.0, and the calcium oxide component and the diphosphorus pentoxide component in this fiber are different from each other.
  • the diameter of the organic fibers or inorganic fibers (short fibers) used in the present invention is usually in the range of l to 30 / jm, preferably in the range of 3 to 15 / m.
  • Such fibers can be used alone, and the elastic modulus can be increased by using them as a 5 'twisted or crossed yarn (braided fiber, braided fiber). Adjustment becomes easy.
  • the number of twists or the number of crossings is usually 0.5 to 10 times Z 25 mm, preferably 1 to 5 times // 25 mm.
  • Such twisted or crossed yarns are usually in the range of 10 to 2000 denier, preferably 50 to 1000 denier.
  • a force containing a plurality of fibers as described above may be the same or different.
  • Fibers such as those described above are preferably used after pre-treatment with, for example, a capping agent such as a force-removing agent, in particular, an epoxy resin, such as xyloxypropyltriethoxysilane.
  • a capping agent such as a force-removing agent, in particular, an epoxy resin, such as xyloxypropyltriethoxysilane.
  • the cupping agent is dissolved in an organic solvent, and the above-mentioned fibers or knitted fibers or braided fibers are incorporated therein.
  • a method is adopted in which the fiber is pulled out of the solution and dried. It is also preferable to heat the fibers after immersing the fibers in the capping agent and pulling them up.
  • the reinforcing core material for constructing a dental abutment used in the present invention is obtained by impregnating an aggregate of the above-mentioned fibers (B) with an acrylic organic matrix (A).
  • Acrylic organic matrix (A) is converted to fiber (B)
  • a method of impregnating the body for example, a method in which fibers are coated in advance with an acrylic organic matrix, a method in which the acrylic organic matrix (A) is A method of providing a step of contacting the aggregate (B) under reduced pressure can be adopted.
  • the reinforcing core material used in the present invention is obtained by impregnating the acrylic organic matrix (A) into the fiber (B) and then partially overlapping the fiber by, for example, short-time light irradiation. It may be. By doing so, the stickiness of the reinforcing core material is reduced, and handling is facilitated.
  • the choice of the acrylic organic matrix (A) that can be suitably used is expanded. Therefore, the polymerization initiator contained in the acrylic organic matrix (A) is preferably a photopolymerization initiator.
  • the volume fraction of the fiber in the reinforcing core material for building a dental abutment used in the present invention is usually in the range of 5 to 95%, preferably in the range of 20 to 80%. Can be done. By adjusting the volume ratio occupied by the fibers, the mechanical and physical properties of the reinforcing core material for constructing a dental abutment used in the present invention can be controlled.
  • the reinforcing core for building a dental abutment as described above is usually used together with a filler.
  • a filler generally used as a composite resin or the like can be used as the filler used together with the reinforcing core for constructing a dental abutment.
  • a resin is used.
  • the same as the acrylic organic matrix (A) that constitutes the above-mentioned reinforcing core for dental abutment construction as a component Or a filler having a similar mono-component composition is preferred.
  • the acrylic organic matrix can be obtained. Since the resin (A) and the monomer of the filler are integrally formed to form the resin, the boundary between the reinforcing core material and the filler is not generated, and the whole is integrated.
  • the filler (C) used in the present invention is the same or similar polymerizable (meth) acrylic acid ester as the above-mentioned acrylic organic matrix (A).
  • Specific examples of the polymerizable (meth) acrylic acid ester (a) and the polymerization initiator (b) used here are the above-mentioned acryl-based organic matrix.
  • the filler used here is at least one kind of filler selected from an organic filler, an inorganic filler and an organic composite filler.
  • an organic filler after polymerizing a polymerizable monomer containing a filler or a cross-linking agent of a powdered polymer obtained by pulverization or dispersion polymerization of a polymer. Fillers obtained by pulverization can be mentioned.
  • the polymerizable monomer used as a raw material of the organic filler is not particularly limited, but a homopolymer or a copolymer of the polymerizable monomer is preferably used. Used. Examples of these polymers include polymethyl methacrylate
  • PMMA polyethyl methacrylate, poly (methacrylic acid propyl).
  • Poly (butyl methacrylate) PBMA
  • PVAc polyvinyl acetate
  • PEG polyethylene glycol
  • PPG Polypropylene glycol
  • PVA polyvinyl alcohol
  • examples of the inorganic filler include silica, silica alumina, alumina, aluminum quartz, glass (including barium glass), titania, zirconia, calcium carbonate, kaolin, and quartz. Ray, mica, aluminum sulfate, barium sulfate, calcium sulfate, titanium oxide, phosphoric acid potassium, and the like. These are preferably subjected to a normal force-up treatment.
  • the filler obtained by polymerizing the above-mentioned polymerizable monomer on the surface of the inorganic filler and coating the inorganic filler is then ground.
  • a polymerizable unit mainly composed of inorganic filler such as fine powdered silica or zirconium oxide, is mainly composed of trimethyl alcohol (meta) acrylate.
  • metal trimethyl alcohol
  • a film obtained by coating the polymer by polymerizing the polymer and pulverizing the obtained polymer can be given.
  • fillers are usually used in an amount of 1 to 100 parts by weight based on a total of 100 parts by weight of the polymerizable (meta) acrylate ester (a) and the polymerization initiator (b) in the filler. 0 to 100 parts by weight, preferably from 10 to 500 parts by weight Used in a range of quantities.
  • Such a composite of the filler and the reinforcing core material preferably has mechanical and physical properties comparable to those of the tooth material.
  • the bending strength of the dentin, particularly the dentin of the tooth contacted with the filler of the present invention, is usually from 1380 to 270 MPa, and the flexural modulus is usually from 12 to 19 MPa.
  • the flexural modulus of the composite of the reinforcing core material and the adhesive filler of the present invention is preferably in the range of 12 to 19 MPa.
  • the fiber-containing dental abutment of the present invention is a reinforcing material in which the fiber (B) impregnated with the acrylic organic matrix (A) as described above and a filler are individually packaged. It is preferable to use a core construction kit.
  • the fiber (B) impregnated with the acrylic organic matrix (A) and the filler (C) are individually packed. For example, it is packaged so that the curing reaction does not progress during storage and storage. At the time of use, an abutment is manufactured using the reinforcing core material and the filler (C).
  • the filler (C) is used in order to suppress the progress of the polymerization reaction of the monomer during storage or the like. When used, it is packaged using a material that does not transmit light.
  • a dental adhesive set comprising a polymerizable monomer composition and a polymerization initiator may be attached.
  • the polymerizable monomer composition is appropriately selected from the same polymerizable monomers and fillers as the organic matrix (A) or the filler (C) and used.
  • a room temperature polymerization initiator is preferably used, and among them, an organic boron compound such as a partial oxide of tributylboron is particularly preferable.
  • the kit for constructing a reinforcing core material of the present invention is used, for example, as follows.
  • the root canal is enlarged and disinfected.
  • separating agent examples include petrolatum, polyalkylene glycol, polyvinyl alcohol, and alginate-based separating material. You.
  • an acidic pre-treatment agent (cunic acid 10 It is preferable to perform pretreatment with an aqueous solution containing 2% by weight of ferric chloride and 3% by weight of ferric chloride (see FIGS. 5 and 6).
  • the dental abutment with a metal wire according to the present invention is a dental abutment including a core portion and a boss portion, which is inserted into a tooth having an apical portion filled with a root canal filler. So,
  • One or more metal wires are arranged from the center of the top of the core to the center of the post in the vertical direction.
  • the dental abutment is such that the tip of the metal wire reaches the surface of or near the root canal filling material.
  • the dental abutment with a metal wire is, for example, as shown in FIG. 8, a core portion 1a and a boss inserted into a tooth 3 in which a root tip is filled with a root canal filler 4.
  • the dental abutment 1 is formed by integrating the girder portion 1b with the dental support 1b.
  • One or more metal wires 5 are arranged in the vertical center of the post lb from the center of the top of the core la and the tip of the metal wire 5 is connected to the root. It reaches the surface of pipe filling material 4 or its vicinity.
  • the dental abutment 1 containing a metal wire is composed of a metal wire 5 and a material (preferably a composite resin material 6) covering the circumference thereof.
  • the metal wire used in the present invention there is no particular limitation on the metal wire used in the present invention as long as it is in a form that can be easily pulled out. Uneven portions which make it difficult to pull out the metal wire when pulling out the metal wire are used. It is necessary that the metal wire is not formed on the surface.
  • Preferred forms of the metal wire include a cylinder or a prism having exactly the same thickness from one end to the other end of the metal wire, and a cone gradually tapering from one end to the other end of the metal wire. Or pyramid shape. You. When using this conical or pyramid-shaped metal wire for a dental abutment, set the pointed end of the metal wire toward the apical part.
  • the wire should preferably have a smooth surface so that it can be easily pulled out for re-treatment. The smoothness of the surface of the metal wire only needs to be such that the metal wire can be easily pulled out without a large resistance when the metal wire is pulled out from the dental support.
  • the surface roughness is preferably 10 or less, more preferably 1 or less.
  • metal wires such as iron, chrome, nickel, knol, silver, gold, platinum, copper, titanium, tungsten, and alloys thereof are mentioned.
  • metal wires made of stainless copper, a copper chromium alloy, a nickel chromium alloy, and a titanium alloy are preferable, and a metal wire made of a titanium alloy is particularly preferable.
  • These metal wires may be subjected to surface treatment such as plating.
  • the thickness of the metal wire is usually from 0.05 to 3 mm, preferably from 0.1 to 2 mm, and more preferably from 0.2 to L mm.
  • the length of the metal wire is usually 3 to 50 mm, preferably 5 to 30 mm, and more preferably 10 to 20 mm.
  • the elastic modulus of the metal wire is usually from 10 to 500 GPa, preferably from 50 to 400 GPa, and more preferably from 100 to 200 GPa. 4585 PT / JP
  • the metal wire used in the present invention is preferably a metal wire that does not elongate due to plastic deformation during drawing.
  • the elongation of the metal wire is usually 100% or less, preferably 50% or less.
  • the pull-out strength of a single metal wire from a dental abutment is usually from 0.05 to: L 0 kg, preferably from 0.3 to 5 kg, from the viewpoint of ease of pull-out. More preferably, it is 0.5 to 3 kg.
  • the pull-out strength of the metal wire is determined by fixing the dental abutment sample to a tensile tester, and fixing the tip of the metal wire protruding from the center of the top of the abutment sample with a chuck.
  • the maximum strength when a metal wire is pulled out at a cross head speed of 1 mm / min is defined as the pull-out strength.
  • Examples of the material for covering the periphery of the metal wire constituting the metal wire-containing dental support of the present invention include metals, ceramics, bonbons, and the like which are usually used as materials for dental supports.
  • a dental abutment is manufactured by combining the metal wire with the force that can be used by a resin or the like, it is preferable to use a resin-based material that can be easily given shape and added easily.
  • a composite resin-based material which is widely used in recent years as a crown material or a filling material, is preferably used as a material for a dental abutment.
  • a composite resin material a composite material obtained by combining an acrylic organic matrix (A) and a filler (B) is preferably used.
  • This acrylic organic matrix (A) is a curable composition containing a polymerizable ( meth ) acrylic acid ester ( a ) and a polymerization initiator (b). It is an adult.
  • the (meth) acrylic acid ester (a) used here includes a monofunctional polymerizable monomer and a polyfunctional polymerizable monomer.
  • the monofunctional polymerizable monomer the (meth) acrylate monomer (al) shown in the description of the fiber-containing dental abutment is preferably used.
  • Multifunctional polymerizable monomer may be used as the acrylic (a) acrylic acid ester (a), and the above-mentioned fiber-containing dental support may be used as the polyfunctional polymerizable monomer.
  • Acrylic organic matrix (A) used for this metal-wired dental abutment Contains a polymerization initiator (b).
  • the polymerization initiator include the organic peroxides, inorganic peroxides, and inorganic peroxides described in the above description of the fiber-containing dental abutment.
  • Boron-containing polymerization initiator ⁇ -diketon compound, organic amine compound, organic sulf Examples include carboxylic acid, organic sulphinates, inorganic sulfur compounds, organic phosphorus compounds and barbituric acids, and acryl organic matrices ( When A) is polymerized by room-temperature chemical polymerization or photopolymerization, a reducing compound can be used in combination, and the reducing compound can be any of the above-mentioned fiber-containing dental abutments.
  • Acrylic organic matrix used for constructing the dental support with metal wire (A) contains a small number of fillers selected from organic fillers, inorganic fillers, and organic composite fillers, which are fillers (B) shown in the description of the fiber-containing dental abutment. At least one kind of filler can be contained.
  • a metal wire 5 is arranged as a core of the abutment 1 from the top of the abutment 1 to the apical portion.
  • the structure of the crown portion such as a crown is first removed, and the top of the core portion of the abutment is removed. A small amount is removed to expose the top of the metal wire, and the exposed portion of the metal wire is sandwiched between pliers and the like, and the metal wire is pulled out. The apex is then treated through the hole from which the metal wire was pulled out, or through the enlarged hole.
  • the support shaft is a column made of a metal, ceramic material, or a composite material composed of fiber and resin, and has a diameter of usually 0.05 to 3 mm, preferably. It is 0.2 to 2 mm, and its length is usually 1 to 50 mm, preferably 5 to 30 mm.
  • the diameter and length can be appropriately set according to the size of the tooth to be treated. In particular, the workability can be improved by making the length of this support shaft considerably longer than that required for the tooth to be treated. After the planting, the surplus support shaft is cut off at the required time. As shown in Fig.
  • the base end to be implanted in the drilled post hole is formed in an inverted conical shape with the center in the width direction of the support shaft as the vertex. Is preferred. By sharpening the base end in this way, the support shaft can be inserted to the deep part of the drilled post hole, and the deep part of the drilled post hole can be inserted. Excessively large diameter No need.
  • Such a support shaft is formed of a hard material such as a metal, a ceramic material, a composite material of a fiber and a resin, and a composite material learned from an inorganic filler and a resin.
  • the metals that can be used here are metals or alloys that are non-corrosive and have no adverse effects on the human body. Examples of such metals are gold, Examples include silver, platinum, noradium, copper, iron, conoult, chrome, nickel and alloys thereof.
  • stainless steel, a nickel-chromium alloy, a nickel-chromium alloy, a dental silver alloy, and a gold-silver palladium alloy for dental use are preferably used. Is done.
  • This support may be formed of a ceramic material.
  • the ceramic material that can be used here is also a material that has no effect on the human body and does not change its properties over a long period of time. Examples of such ceramic materials include alumina, zirconia, silicon nitride, and silica. These can be used alone or in combination.
  • the support shaft may be formed of a composite material including a fiber and a resin.
  • the fibers that can be used here include, in addition to ordinary synthetic fibers, carbon fibers, glass fibers, aramide fibers, boron fibers, metal fibers, and the like. Power? Of these, it is preferable to use carbon fiber and / or glass fiber. These fibers can be used alone or in combination.
  • the resin that can be used here is a resin that is insoluble in water and hardly causes chemical changes such as hydrolysis or stress deterioration even when it is in contact with water for a long time.
  • a reaction-curable resin is preferred, and in particular, an epoxy resin, an acrylic resin, and an unsaturated polyester resin.
  • a resin and among these, an acrylic resin is particularly preferable.
  • Such resins can be used alone or in combination.
  • the resin is usually used in an amount of 110,000 parts by weight, preferably 110,100 parts by weight, based on 100 parts by weight of the fiber. Used in an amount of 0 parts by weight to impregnate the fiber with the resin and cure the resin. At this time, the fibers may be twisted or braided.
  • the support shaft may be formed of a composite material including an inorganic filler and a resin.
  • inorganic fillers include, for example, silica, silica, aluminum, aluminum, aluminum quartz, glass, glass, glass, titania, and titanium. Zirconia, calcium carbonate, kaolin, clay, mica, aluminum sulfate, barium sulfate, calcium sulfate, titanium oxide, calcium phosphate, etc. Can be mentioned. These are preferably subjected to a normal cupping process.
  • the resin used with the inorganic filler include the above-mentioned resins.
  • the support shaft may be manufactured to have the diameter and length of the support shaft from the beginning by using the metal, ceramic material, or composite material as described above. Further, a columnar body larger than a desired size can be formed, and this can be polished or cut into a columnar body having a desired shape. In particular, it is preferable that the te at the base end of the columnar body is formed by polishing or cutting.
  • the angle of the taper formed at the base end of the columnar body is usually 0.120 degrees, preferably 390 degrees.
  • a support shaft fixing member 12 In the vicinity of the tip of such a support shaft 91, a support shaft fixing member 12 The support shaft 91 is fitted and arranged.
  • the support shaft fixing member 2 is fitted to the support shaft 91 so as to be able to move up and down using the support shaft 91 as an operating shaft.
  • the shape of the support shaft fixing member 92 is not particularly limited as long as it has the above-mentioned configuration, but is preferably cylindrical as shown in FIG. That is, the cylindrical support shaft fixing member 92 can be formed in various forms such as a cylindrical shape and a rectangular tube shape having a through hole for fitting the support shaft 91. Further, at least the bottom end, preferably the bottom end and the upper end of the support shaft fixing member 92 are preferably formed in a tapered shape.
  • the post holes drilled for implanting the dental boss of the present invention often become tapered as the depth increases, and thus the support shaft fixing member 92 is formed.
  • the support shaft fixing member 92 can be inserted deep into the post hole that has been drilled. It can be fixed more securely.
  • the angle of the taper formed here is a force that can be set as appropriate, usually 5 to 90 degrees, and preferably 10 to 30 degrees.
  • the diameter of the support shaft fixing member 92 is appropriately set in accordance with the tooth to be treated, usually 0.1 to 5 mm, and preferably 0.3 to 3 mm. mm, and its length is 0.5 to 40 mm, preferably 3 to 20 mm, and its length is usually one of the length of the support shaft. It is between 0 and 90%, preferably between 25 and 75%.
  • the diameter of the through-hole formed in the support shaft fixing member 92 be in the range of 101% to 200% of the diameter of the support shaft.
  • This support shaft fixing member is formed of a material forming the support shaft. And can be done.
  • such a support shaft fixing member is formed of a hard material such as a metal, a ceramic material, a composite material of a fiber and a resin, or a composite material of an inorganic filler and a resin.
  • a hard material such as a metal, a ceramic material, a composite material of a fiber and a resin, or a composite material of an inorganic filler and a resin.
  • the metal used here are, as in the case of the metal capable of forming the above-mentioned support shaft, a metal that is not corrosive and does not adversely affect the human body. Alloys, examples of such metals include gold, silver, platinum, noradium, copper, iron, corn, chrome, nickel, and alloys thereof. be able to.
  • stainless steel cobalt chrome alloy, nickel-chrome alloy, dental silver alloy, and dental gold-silver palladium alloy are preferable.
  • ceramic materials aluminum, zirconia, and silica, which have no effect on the human body and whose characteristics do not fluctuate for a long period of time, are similarly used. It is possible to do so.
  • it can be formed of a composite material composed of fiber and resin.
  • the fibers that can be used here include, in addition to ordinary synthetic fibers, bonbon fibers, glass fibers, aramid fibers, metal fibers, and the like.
  • a thermoplastic resin such as polysulfone or polypropylene or a reaction-curable resin is preferred.
  • an epoxy resin, an acrylic resin, and an unsaturated polyester resin are preferable. It is preferable to use an acrylic resin, and among these, an acrylic resin is particularly preferred.
  • the support shaft fixing member using such a composite material can be manufactured, for example, by manufacturing a tubular body with fibers, impregnating the tubular body with a resin, and curing the resin. However, it can be formed by cutting or polishing as in the case of using other materials.
  • the support shaft fixing member may be a composite material of an inorganic filler and a resin, and the inorganic filler and the tree that can be used here may be used.
  • the fat include those exemplified in the description of the support shaft.
  • the support shaft and the support shaft fixing member may be formed of the same material. It can be made of different materials.
  • the dental post of the present invention is used, for example, as shown in FIG. 10, and firstly, a boss hole is formed in a tooth requiring treatment. Next, the dental adhesive 12 1 is filled in the boss holes thus formed. After the adhesive 1 21 has been filled in this way, before the adhesive is cured, the support shaft 91 of the dental boss of the present invention is inserted into the boss hole with the sharpened base end first. I do. By inserting the supporting shaft 91 of the dental boss into the boss hole filled with the adhesive, the displaced dental adhesive is moved along the supporting shaft 91 into the post hole. Rises inside. In this way, after inserting the support shaft 91 of the dental boss into the boss hole, the support shaft fixing member 92 is pushed down below the post hole.
  • the post holes are filled with a filler 12 1, and by pressing down the support shaft fixing member 92, the space between the support shaft 91 and the support shaft fixing member 92 and the support shaft fixing member 92 are reduced.
  • the space between the fixing member 92 and the tooth is filled with the adhesive 121.
  • the dental adhesive 122 can be cured by using external energy such as light or heat, or can be cured by blending a curing agent immediately before using the adhesive.
  • the support shaft fixing member, and the support shaft are integrated with the adhesive in this way, the excess support shaft, hardened adhesive, and the support shaft fixing member are polished to form an abutment.
  • the teeth are formed on the abutment thus formed in the usual way Repair the tooth by placing a crown etc.
  • the dental post of the present invention can be further modified in a variety of manners having the above configuration.
  • a spiral groove 95 is formed on the support shaft 91, and a spiral groove 96 that is screwed with the spiral groove 95 is formed on the inner peripheral wall of the cylinder of the support shaft fixing member 92. It may be formed so that the support shaft 91 and the support shaft fixing member 92 are screwed together. When screwing the support shaft 91 and the support shaft fixing member 92 in this way, instead of pushing down the support shaft fixing member 92 toward the base end of the support shaft 91, the support shaft 91 is screwed. By rotating the fixing member 92, it is possible to reliably reach the deep part of the boss hole.
  • FIG. 11 shows a spiral groove 95 on the support shaft 91, and a spiral groove 96 that is screwed with the spiral groove 95 is formed on the inner peripheral wall of the cylinder of the support shaft fixing member 92. It may be formed so that the support shaft 91 and the support shaft fixing member 92 are screwed together. When screwing the support shaft 91 and the support shaft fixing member 92 in this way, instead of pushing
  • the dental post of the present invention is formed by winding support shaft fixing members 92a, 92b, 92c-having different lengths around a support shaft 91, and supporting the shaft.
  • a taper may be formed at the lower end of 2.
  • Such support shaft fixing members 923, 921), 92 '' can be formed of, for example, cylindrical objects (for example, metal tubes) having different diameters, or by impregnating the fibers with a resin. It can also be formed of a hollow cylindrical object.
  • Such a dental post of the present invention inserts the support shaft 91 into the host hole and then pushes down the support shaft fixing member 12 below the boss hole. And use the same.
  • the fiber-containing dental abutment of the present invention comprises a reinforcing core comprising inorganic fibers and / or organic fibers (B) impregnated with the acryl-based organic matrix (A).
  • This reinforcing core has very good adhesion to the filler (C).
  • a filler a polymerizable component constituting the acrylic organic matrix (A) is used.
  • the reinforcing core material and the filler material (C) are firmly integrated with each other.
  • the abutment thus constructed has the same physical and mechanical properties as the tooth material, so that even if stress is applied, the abutment has the same radius as the tooth material, and the tooth material has the same physical and mechanical properties. Residual stress does not accumulate at boundaries. Therefore, the reinforcing core material of the present invention adheres well to the tooth material over a long period of time.
  • the fiber-containing dental abutment of the present invention is characterized in that a reinforcing core material is inserted into a hole formed by piercing a tooth root, and a surrounding material is filled with a filler and cured. It is possible to construct an abutment with a single treatment.
  • the abutment according to the present invention can be completely adapted to any shape of hole by changing its shape, and therefore does not cause improper mounting between the tooth material and the abutment.
  • the dental abutment with a metal wire according to the present invention is easy to pull out as a core, and has a metal wire, so that when re-treating a tooth, the human body is not damaged. However, it can be easily removed from the inside of the tooth.
  • the dental abutment (dental boss) with a support shaft fixing member of the present invention is composed of a support shaft and a support shaft fixing member that can move up and down using the support shaft as an operation shaft.
  • a dental adhesive is inserted into the post hole, the support shaft is implanted, and then the support shaft fixing member is pushed down, so that The support shaft can be securely implanted in the center of the post hole.
  • the post hole is filled with a dental adhesive, a support shaft is implanted, and the support shaft fixing member is further pushed down toward the base end of the support shaft, thereby fixing the tooth to the support shaft.
  • the post is integrated with the tooth, the support shaft fixing member, and the hardened dental adhesive, so that, for example, the support shaft is used as a support.
  • the abutment is stable even with a crown or the like, so that the treated teeth do not change over a long period of time.
  • the twisted yarn is removed from the mixed solution, left at room temperature for 10 minutes, and then placed in a blower constant-temperature dryer (WFO-450ND, Tokyo Rikakikai Co., Ltd.) set at 80 "C for 24 hours.
  • WFO-450ND Tokyo Rikakikai Co., Ltd.
  • the glass fiber surface was left to dry, and the surface of the glass fiber was subjected to silane coupling treatment.
  • this monomer composition was treated with silane force. Reduce the pressure (approximately 5 mmHg) so that the glass fiber is impregnated with the monomer composition between the glass fibers, and leave it at room temperature for 1 minute. Repeated 0 times.
  • Triethylene glycol crytallet 25 parts by weight, 1,6-bis
  • a stainless steel mold as shown in Figure 2 of JIS T 6514 is filled with this base and the four reinforcing cores cut to 25 mm and then visible light. Irradiation of visible light from both sides for 60 seconds using an irradiator (Alphalite II, manufactured by Morita Tokyo Mfg. Co., Ltd.) for 2 mm width, 2 mm thickness, and 25 mm length A test piece as shown in Fig. 14 was prepared.
  • an irradiator Alphalite II, manufactured by Morita Tokyo Mfg. Co., Ltd.
  • the volume content of glass fibers in this test piece is 27%.
  • the bending strength and bending elasticity were measured at a cross head speed of 1 mm per minute according to the method described in 5.8 of JIS T 6514. The rate was measured. Five test pieces were prepared and the average value measured five times is shown below as the measured value.
  • the dentin of teeth The flexural strength is 1380-270 MPa, the flexural modulus is 12-19 MPa, and the composition has mechanical properties very similar to tooth dentin. I understand.
  • a stainless steel mold described in Appendix 2 of JIS T 6514 is filled with the filler material prepared in Example 1 and filled with a visible light irradiator (Morita Tokyo, Ltd.) Then, visible light rays were radiated from both sides for 60 seconds at a time using Alfarite II) to prepare test pieces 2 mm wide, 2 mm thick and 25 mm long. However, this test piece does not contain glass fiber.o
  • Example 1 the organic matrix portion of the reinforcing core was bent using a visible light irradiator (Alphalite II, manufactured by Morita Tokyo Mfg. Co., Ltd.) before the bending test piece was prepared.
  • a test piece was prepared in the same manner as in Example 1 except that preliminary polymerization was performed by irradiating a light beam for 60 seconds, and a bending strength and a bending elastic modulus were measured.
  • Example 2 Using the reinforcing core material and filler paste used in Example 2, a simulation of actual clinical treatment was performed according to FIGS. The procedure is described below.
  • a pre-treatment material for dental adhesive Green surface treatment agent for Super Bond C & B, manufactured by San Medical Co., Ltd.. After leaving it for 0 seconds, it was washed with running water for 10 seconds.
  • the abutment was attached to the tooth using a dental adhesive (Super Bond C & B, manufactured by Sun Medical Co., Ltd.).
  • the cured abutment was ground using a dental diamond point (Dele Dieget, Composite Ape) to form the abutment part.
  • the pulp cavity formed by the removal of the pulp was enlarged with a dental turbine, and the apical hole was further filled with a dental adhesive (San Medical Co., Ltd., trade name).
  • a simulated healing tooth was prepared by occlusion with a superbond (C & B).
  • SCHOTTGLASWERKE trademark
  • the paste was filled into the simulated treatment tooth, and a stainless steel wire with a diameter of 0.4 mm and a length of 20 mm was planted at the center (see Fig. 8).
  • the filled paste is irradiated with visible light for 60 seconds from a dental visible light irradiator (Translux CL, trade name, manufactured by Kurtuar Corporation) to polymerize the paste.
  • Translux CL trade name, manufactured by Kurtuar Corporation
  • the stainless steel wire had an elastic modulus of 15 GPa and an elongation of 23% or less.
  • the pull-out strength of the stainless steel wire from the dental abutment was 0.6 kg.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dentistry (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Dental Preparations (AREA)

Abstract

L'invention concerne un pivot dentaire qui peut être fixé à une dent, à l'aide d'une charge dentaire insérée dans une extrémité de racine. Le pivot dentaire comprend un axe de support à insérer dans l'extrémité de racine et une partie d'extrémité formée sur l'extrémité de l'axe de support, à l'aide d'un matériau de noyau en communication avec la partie extrémité et l'axe de support. Le matériau de noyau comprend au moins un type de matériau de noyau sélectionné dans le groupe constitué par une fibre inorganique imprégnée d'une matrice organique acrylique, un fil métallique et un axe de support fixant un matériau ajusté sur l'axe de support et verticalement mobile par rapport audit axe de support qui fonctionne comme un axe mobile.
PCT/JP1999/001142 1998-03-10 1999-03-10 Pivot dentaire, renforcement de materiau de noyau pour la fabrication d'un pivot dentaire et kit permettant la fabrication d'un pivot dentaire WO1999045859A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53237999A JP4413281B2 (ja) 1998-03-10 1999-03-10 歯科用支台、歯科用支台構築用補強芯材および歯科用支台構築用キット

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JP10/58548 1998-03-10
JP5854898 1998-03-10
JP10/174391 1998-06-22
JP17439198 1998-06-22
JP34846198 1998-12-08
JP10/348461 1998-12-08

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WO1999045859A1 true WO1999045859A1 (fr) 1999-09-16

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008132334A (ja) * 2006-11-27 2008-06-12 Harald Nordin 歯根管アンカ組立体
JP2009118914A (ja) * 2007-11-12 2009-06-04 Sun Medical Co Ltd 歯科用支台築造用ポストおよび歯科用根管充填用キット
EP2937062A1 (fr) * 2014-04-23 2015-10-28 Bernard Maneuf Structure de renfort pour reconstitution dentaire corono-radiculaire, procédé de réalisation d'une reconstitution dentaire corono-radiculaire, reconstitution dentaire corono-radiculaire
JP2019072484A (ja) * 2017-10-12 2019-05-16 ブリュノ、クルネ−コストＢｒｕｎｏ Ｃｌｕｎｅｔ−Ｃｏｓｔｅ 歯冠および歯根の歯科修復物、このような修復を行うための方法、およびこのような歯科修復物をエッチングするための方法
EP3372194A4 (fr) * 2015-11-05 2019-07-24 Feliz Matos, Leandro Edgardo Tenon-ancre intraradiculaire
EP3439576A4 (fr) * 2016-04-05 2019-11-27 Syact Llp Tenon pour restauration endodontique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101681518B1 (ko) 2015-04-30 2016-12-01 일루미 사이언시스 인크. 광학적 편직 섬유 치근 기둥

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58126806U (ja) * 1982-02-22 1983-08-29 和田　巌 歯科用ポスト
JPS61502031A (ja) * 1984-05-08 1986-09-18 フリ−ド　クルツプ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング 納入体およびこの納入体を使用した処置法
JPH0249508U (fr) * 1988-09-30 1990-04-06
JPH07148243A (ja) * 1993-09-24 1995-06-13 Takiron Co Ltd インプラント材料
JPH11500933A (ja) * 1995-03-01 1999-01-26 レノード，マーク 複合マテリアルで作られた放射線不透過性の歯の支柱

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58126806U (ja) * 1982-02-22 1983-08-29 和田　巌 歯科用ポスト
JPS61502031A (ja) * 1984-05-08 1986-09-18 フリ−ド　クルツプ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング 納入体およびこの納入体を使用した処置法
JPH0249508U (fr) * 1988-09-30 1990-04-06
JPH07148243A (ja) * 1993-09-24 1995-06-13 Takiron Co Ltd インプラント材料
JPH11500933A (ja) * 1995-03-01 1999-01-26 レノード，マーク 複合マテリアルで作られた放射線不透過性の歯の支柱

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* Cited by examiner, † Cited by third party
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JP2008132334A (ja) * 2006-11-27 2008-06-12 Harald Nordin 歯根管アンカ組立体
JP2009118914A (ja) * 2007-11-12 2009-06-04 Sun Medical Co Ltd 歯科用支台築造用ポストおよび歯科用根管充填用キット
EP2937062A1 (fr) * 2014-04-23 2015-10-28 Bernard Maneuf Structure de renfort pour reconstitution dentaire corono-radiculaire, procédé de réalisation d'une reconstitution dentaire corono-radiculaire, reconstitution dentaire corono-radiculaire
FR3020264A1 (fr) * 2014-04-23 2015-10-30 Bernard Maneuf Structure de renfort pour reconstitution dentaire corono-radiculaire, procede de realisation d'une reconstitution dentaire corono-radiculaire, reconstitution dentaire corono-radiculaire
US9839493B2 (en) 2014-04-23 2017-12-12 Bernard Maneuf Reinforcement structure for coronal-radicular dental reconstitution, method for performing coronal-radicular dental reconstitution, coronal-radicular dental reconstitution
EP3372194A4 (fr) * 2015-11-05 2019-07-24 Feliz Matos, Leandro Edgardo Tenon-ancre intraradiculaire
EP3439576A4 (fr) * 2016-04-05 2019-11-27 Syact Llp Tenon pour restauration endodontique
JP2019072484A (ja) * 2017-10-12 2019-05-16 ブリュノ、クルネ−コストＢｒｕｎｏ Ｃｌｕｎｅｔ−Ｃｏｓｔｅ 歯冠および歯根の歯科修復物、このような修復を行うための方法、およびこのような歯科修復物をエッチングするための方法

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