JPH0753644B2 - Dental molding - Google Patents
Dental moldingInfo
- Publication number
- JPH0753644B2 JPH0753644B2 JP27134993A JP27134993A JPH0753644B2 JP H0753644 B2 JPH0753644 B2 JP H0753644B2 JP 27134993 A JP27134993 A JP 27134993A JP 27134993 A JP27134993 A JP 27134993A JP H0753644 B2 JPH0753644 B2 JP H0753644B2
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- layer
- mixture
- methacrylic resin
- curable silicone
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000000465 moulding Methods 0.000 title claims description 16
- 229920002379 silicone rubber Polymers 0.000 claims description 83
- 239000004945 silicone rubber Substances 0.000 claims description 83
- 239000000203 mixture Substances 0.000 claims description 76
- 239000000113 methacrylic resin Substances 0.000 claims description 41
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 20
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 18
- 239000004926 polymethyl methacrylate Substances 0.000 description 18
- 239000011347 resin Substances 0.000 description 16
- 229920005989 resin Polymers 0.000 description 16
- 239000003054 catalyst Substances 0.000 description 14
- 239000010440 gypsum Substances 0.000 description 14
- 229910052602 gypsum Inorganic materials 0.000 description 14
- 241000209094 Oryza Species 0.000 description 13
- 235000007164 Oryza sativa Nutrition 0.000 description 13
- 235000009566 rice Nutrition 0.000 description 13
- 239000000178 monomer Substances 0.000 description 12
- 238000007259 addition reaction Methods 0.000 description 11
- 239000002685 polymerization catalyst Substances 0.000 description 10
- 229910052697 platinum Inorganic materials 0.000 description 9
- 238000010526 radical polymerization reaction Methods 0.000 description 9
- 150000001451 organic peroxides Chemical class 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 6
- -1 polysiloxane Polymers 0.000 description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000007348 radical reaction Methods 0.000 description 5
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 230000009974 thixotropic effect Effects 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 3
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 229910021485 fumed silica Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000006082 mold release agent Substances 0.000 description 3
- 239000011505 plaster Substances 0.000 description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 2
- 229910004283 SiO 4 Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000005250 alkyl acrylate group Chemical group 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 2
- 229920005645 diorganopolysiloxane polymer Polymers 0.000 description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000012763 reinforcing filler Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- LGJCFVYMIJLQJO-UHFFFAOYSA-N 1-dodecylperoxydodecane Chemical compound CCCCCCCCCCCCOOCCCCCCCCCCCC LGJCFVYMIJLQJO-UHFFFAOYSA-N 0.000 description 1
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- VMAWODUEPLAHOE-UHFFFAOYSA-N 2,4,6,8-tetrakis(ethenyl)-2,4,6,8-tetramethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane Chemical compound C=C[Si]1(C)O[Si](C)(C=C)O[Si](C)(C=C)O[Si](C)(C=C)O1 VMAWODUEPLAHOE-UHFFFAOYSA-N 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- AOIDYWIUVADOPM-UHFFFAOYSA-N 2-hydroxyethyl 2,3-dimethylbut-2-enoate Chemical compound CC(C)=C(C)C(=O)OCCO AOIDYWIUVADOPM-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- FSIJKGMIQTVTNP-UHFFFAOYSA-N bis(ethenyl)-methyl-trimethylsilyloxysilane Chemical compound C[Si](C)(C)O[Si](C)(C=C)C=C FSIJKGMIQTVTNP-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229940023487 dental product Drugs 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical group [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Dental Preparations (AREA)
- Dental Prosthetics (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明はメタクリル系樹脂層と
シリコーンゴム層とが一体化した歯科用成型体に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental molded article in which a methacrylic resin layer and a silicone rubber layer are integrated.
【０００２】[0002]
【従来の技術】従来、メタクリル樹脂層とシリコーンゴ
ム層とからなる一体化成型体及びその製造方法が知られ
ており、主にシリコーンゴムで裏装された義歯床及びそ
の製造方法として提案されている（特公昭４４−５５１
６号，特開昭５５−３８１７２号参照）。従来公知の一
体化成型体は、メタクリル樹脂層とシリコーンゴム層と
が直接接触するように一体化している。また、従来公知
の一体化成型体は、メタクリル樹脂成型体にシラン系プ
ライマーを塗布しその上に室温硬化性シリコーンゴム組
成物を塗布して硬化させるか、型内にメタクリル樹脂粒
子とそのモノマーラジカル重合触媒を混和錬成した餅状
物と付加反応硬化型シリコーンゴム組成物を層状に填入
し、加圧下加熱して硬化させることにより製造されてい
る。2. Description of the Related Art Heretofore, an integrally molded body composed of a methacrylic resin layer and a silicone rubber layer and a method for producing the same have been known, and they have been proposed mainly as a denture base lined with silicone rubber and a method for producing the same. Yes (Japanese Patent Publication No. 44-551)
6, JP-A-55-38172). The conventionally known integrated molded body is integrated so that the methacrylic resin layer and the silicone rubber layer are in direct contact with each other. Further, the conventionally known integrated molded body is prepared by coating a methacrylic resin molded body with a silane primer and then applying a room temperature curable silicone rubber composition to cure it, or by methacrylic resin particles and their monomer radicals in a mold. It is manufactured by charging a cake-like material obtained by mixing and kneading a polymerization catalyst and an addition reaction-curable silicone rubber composition in a layered form and heating under pressure to cure.
【０００３】[0003]
【従来技術の問題点】メタクリル樹脂層とシリコーンゴ
ム層とからなる一体化成型体はメタクリル樹脂とシリコ
ーンゴムが異質の材料であるため接着耐久性が必ずしも
大きくないという欠点がある。また、上述の従来公知の
製造方法によるもののうちプライマーを使用して製造し
たものは、プライマー中の有機溶剤によりメタクリル樹
脂に亀裂が生じたり、形状が複雑であるとプライマーの
塗り方が難しいという欠点があり、プライマーを使用し
ない製造方法によるものは餅状混合物が良好な状態にあ
る短期間に硬化性シリコーンゴム組成物を填入しないと
良好な接着が得られないため、良好な接着を得るのに熟
練を必要とするという難点がある。Problems of the prior art: The integrally molded body composed of a methacrylic resin layer and a silicone rubber layer has a drawback that the methacrylic resin and the silicone rubber are different materials, and therefore the adhesion durability is not necessarily high. Further, among the above-mentioned conventionally known manufacturing methods, those manufactured using a primer have a drawback that the methacrylic resin is cracked by the organic solvent in the primer, or the primer is difficult to apply when the shape is complicated. However, in the production method which does not use a primer, good adhesion cannot be obtained unless the curable silicone rubber composition is filled in a short period of time when the mixture is in a good state. There is a drawback that it requires skill.
【０００４】[0004]
【問題の解決手段とその作用】この発明は、従来技術の
上記欠点，難点を解消すべくなされたものであり、メタ
クリル系樹脂層とシリコーンゴム層とが一体化してお
り、両層間の接着耐久性が優れた歯科用成型体を提供す
ることを目的とする。この目的は、メタクリル系樹脂層
とシリコーンゴム層とが、メタクリル系樹脂とシリコー
ンゴムの混合物層［ただし、メタクリル系樹脂とシリコ
ーンゴムの配合比率が重量比で（２：８）〜（８：２）
である］を介して一体化されている歯科用成型体によっ
て達成される。[Means for Solving the Problem and Its Action] The present invention has been made in order to solve the above-mentioned drawbacks and drawbacks of the prior art. A methacrylic resin layer and a silicone rubber layer are integrated, and the adhesion durability between both layers is improved. An object is to provide a dental molded article having excellent properties. For this purpose, the methacrylic resin layer and the silicone rubber layer are a mixture layer of the methacrylic resin and the silicone rubber [where the mixing ratio of the methacrylic resin and the silicone rubber is (2: 8) to (8: 2) by weight. )
It is achieved by a dental molded body that is integrated through the.
【０００５】メタクリル系樹脂層とシリコーンゴム層と
が、メタクリル系樹脂とシリコーンゴムの混合物層を介
して一体化されている歯科用成型体について説明する
に、メタクリル系樹脂層はポリメチルメタクリレートの
みから構成されていてもよいし、ポリメチルメタクリレ
ートの他に充填剤や少量の顔料、安定剤などの添加剤、
あるいは重合触媒の未分解残渣を含有していてもよい。
また、ポリメチルメタクリレートはメチルメタクリレー
トのみのポリマーであってもよいし、少量の他ビニルモ
ノマー、例えば、アルキルメタクリレート、メチルアク
リレート、アルキルアクリレートまたはエチレングリコ
ールジメタクリレートとのコポリマーであってもよい。
変形、ひび割れの防止や機械的強度の向上といった観点
からメチルメタクリレート１００〜８５重量％とエチレ
ングリコールジメチルメタクリレート１５〜０（０を含
まない）重量％のコポリマーが好ましい。A dental molded article in which a methacrylic resin layer and a silicone rubber layer are integrated via a mixture layer of a methacrylic resin and a silicone rubber will be described. The methacrylic resin layer is composed of polymethylmethacrylate only. May be configured, in addition to polymethylmethacrylate, fillers and small amounts of additives such as pigments, stabilizers,
Alternatively, it may contain an undecomposed residue of the polymerization catalyst.
Further, the polymethylmethacrylate may be a polymer of only methylmethacrylate, or may be a copolymer with a small amount of other vinyl monomers such as alkylmethacrylate, methylacrylate, alkylacrylate or ethyleneglycoldimethacrylate.
From the viewpoint of preventing deformation and cracking and improving mechanical strength, a copolymer of 100 to 85% by weight of methyl methacrylate and 15 to 0 (not including 0)% by weight of ethylene glycol dimethyl methacrylate is preferable.
【０００６】シリコーンゴム層は、白金系触媒使用の付
加反応硬化型シリコーンゴム、有機過酸化物触媒使用の
ラジカル反応硬化型シリコーンゴム、縮合反応硬化型シ
リコーンゴム等のいずれであってもよいが、接着性、硬
化の迅速性の点から前二者が好ましい。ここで、白金系
触媒作用の付加反応硬化型シリコーンゴムの代表例は、
両末端ビニル基封鎖ジオルガノポリシロキサン、オルガ
ノハイドロジェンポリシロキサンおよび白金系触媒を主
剤とするものであり、有機過酸化物触媒使用のラジカル
反応硬化型シリコーンゴムの代表例は、ビニル基含有ジ
オルガノポリシロキサンと有機過酸化物触媒を主剤とす
るものである。シリコーンゴムは補強性充填剤を含有し
ていて強度が大きく、ＪＩＳ−Ｋ６３０１による硬度が
２０〜７０のものが好ましく、歯科用成型体に使用する
ときは３０〜５０が好ましい。シリコーンゴムは増量充
填剤、耐熱剤、γ−メタクリロキシプロピルトリアルコ
キシシラン、γ−グリシジロキシプロピルトリアルコキ
シシランのような接着促進剤、顔料、付加反応遅延剤等
の添加剤を含有していてもよい。The silicone rubber layer may be any of addition reaction curable silicone rubber using a platinum catalyst, radical reaction curable silicone rubber using an organic peroxide catalyst, condensation reaction curable silicone rubber, etc. The former two are preferred from the viewpoints of adhesion and rapid curing. Here, a typical example of a platinum-based catalytic addition reaction-curable silicone rubber is
A vinyl group-containing diorganopolysiloxane, which has a vinyl group-terminated diorganopolysiloxane, an organohydrogenpolysiloxane, and a platinum-based catalyst as the main ingredients, and which is a radical reaction-curable silicone rubber using an organic peroxide catalyst is a typical example. The main component is polysiloxane and an organic peroxide catalyst. The silicone rubber preferably contains a reinforcing filler and has high strength, and has a hardness of 20 to 70 according to JIS-K6301, and preferably 30 to 50 when used in a dental molded body. Silicone rubber contains additives such as an expanding filler, a heat-resistant agent, an adhesion promoter such as γ-methacryloxypropyltrialkoxysilane and γ-glycidyloxypropyltrialkoxysilane, a pigment, and an addition reaction retarder. Good.
【０００７】メタクリル系樹脂とシリコーンゴムとの混
合物層を構成するメタクリル系樹脂とシリコーンゴムは
前述のとおりであり、メタクリル系樹脂とシリコーンゴ
ムが少なくともほぼ均一に混合していることが好まし
く、いわゆる相互侵入型網状物、すなわちＩＰＮ層を形
成していることがより好ましい。両者が少なくともほぼ
均一に混合することにより、両者の中間的な性状を具備
し、メタクリル系樹脂層とシリコーンゴム層双方への接
着性、その耐久性が向上する。The methacrylic resin and the silicone rubber which compose the mixture layer of the methacrylic resin and the silicone rubber are as described above, and it is preferable that the methacrylic resin and the silicone rubber are mixed at least almost uniformly. It is more preferable to form an interstitial network, that is, an IPN layer. When both are mixed at least substantially uniformly, the intermediate properties of both are provided, and the adhesiveness to both the methacrylic resin layer and the silicone rubber layer and the durability thereof are improved.
【０００８】メタクリル系樹脂とシリコーンゴムの配合
比率は、接着性、その耐久性の点で重量比で（２：８）
〜（８：２）であり、（４：６）〜（６：４）がより好
ましい。メタクリル系樹脂層は義歯床であり、シリコー
ンゴム層はその裏装材の形状をとるのが一般的である。The compounding ratio of methacrylic resin and silicone rubber is (2: 8) by weight in terms of adhesion and durability.
To (8: 2), and (4: 6) to (6: 4) are more preferable. The methacrylic resin layer is a denture base, and the silicone rubber layer is generally in the form of a lining material.
【０００９】次に、メタクリル系樹脂層とシリコーンゴ
ム層とが、メタクリル系樹脂とシリコーンゴムの混合物
層を介して一体化された歯科用成型体は、いくつかの製
造方法が有り得るが、最も好ましいのは、型内にメタク
リル系樹脂粒子とそのモノマーとラジカル重合触媒から
なる餅状混合物、該餅状混合物と硬化性シリコーンゴム
組成物との混合物及び硬化性シリコーンゴム組成物を層
状に投入し、型を閉じて加圧加熱下硬化させるという製
造方法である。Next, a dental molded body in which a methacrylic resin layer and a silicone rubber layer are integrated via a mixture layer of a methacrylic resin and a silicone rubber can be manufactured by several methods, but is most preferable. Is a mixture of methacrylic resin particles, a monomer thereof and a radical polymerization catalyst in a mold, a mixture of the mixture and a curable silicone rubber composition, and a curable silicone rubber composition are layered, It is a manufacturing method in which the mold is closed and cured under pressure and heating.
【００１０】ここで使用するメタクリル系樹脂粒子は前
述したとおりであり、餅状混合物のつくりやすさの点で
微球状のものが好ましい。また、モノマーとしては、メ
チルメタクリレートのみでもよいし、メチルメタクリレ
ートと少量のその他のアルキルメタクリレート、メチル
アクリレート、アルキルアクリレートまたはエチレング
リコールジメタクリレートとの混合物であってもよい。
ラジカル重合触媒としてはベンゾイルパーオキサイド、
ジクミルパーオキサイド、ジ（t−ブチル）パーオキサ
イド、ジラウリルパーオキサイドのような有機過酸化
物、α,α’−アゾビスイソブチロニトリルが例示され
る。ラジカル重合触媒はメタクリル系樹脂およびそのモ
ノマーと混合されるのが常態であるが、メタクリル系樹
脂粒子中にラジカル重合触媒が残存しているときは、該
触媒を別途添加する必要は必ずしもない。ラジカル重合
触媒の含有量は、メタクリル系樹脂とそのモノマーの合
計量の０.２〜１.０重量％が好ましい。The methacrylic resin particles used here are as described above, and those having a fine spherical shape are preferable from the viewpoint of easy preparation of the dough-like mixture. Further, as the monomer, only methyl methacrylate may be used, or a mixture of methyl methacrylate and a small amount of other alkyl methacrylate, methyl acrylate, alkyl acrylate or ethylene glycol dimethacrylate may be used.
Benzoyl peroxide as a radical polymerization catalyst,
Examples thereof include organic peroxides such as dicumyl peroxide, di (t-butyl) peroxide, and dilauryl peroxide, and α, α′-azobisisobutyronitrile. The radical polymerization catalyst is usually mixed with the methacrylic resin and its monomer, but when the radical polymerization catalyst remains in the methacrylic resin particles, it is not always necessary to add the catalyst separately. The content of the radical polymerization catalyst is preferably 0.2 to 1.0% by weight based on the total amount of the methacrylic resin and its monomer.
【００１１】メタクリル系樹脂とそのモノマーとラジカ
ル重合触媒からなる餅状混合物は、メタクリル系樹脂粒
子、好ましくは粒子径３０〜５００μｍの微小球のもの
とそのモノマーが重量比で（１〜３）：１、好ましくは
略２：１になるように混合して密閉容器中に保存するこ
とにより得られる。混合物は当初は湿った砂のような状
態となり、次に糸引状となり、次につきたての餅状とな
り、最後にゴム状となるが、つきたての餅状のものを成
型に供する。つきたての餅状では、メタクリル系樹脂が
そのモノマーにより膨潤溶解して、粘度がほぼ均一とな
り可塑性を呈している。The rice cake-like mixture comprising a methacrylic resin, its monomer and a radical polymerization catalyst is a methacrylic resin particle, preferably a microsphere having a particle diameter of 30 to 500 μm and its monomer in a weight ratio of (1 to 3): It is obtained by mixing in a ratio of 1, preferably about 2: 1 and storing in a closed container. The mixture is initially in the form of moist sand, then in the form of string, then in the form of freshly fluffy cake, and finally in the form of rubber, but the freshly fluffy cake-like product is subjected to molding. In the freshly-prepared rice cake-like form, the methacrylic resin swells and dissolves due to the monomer, and the viscosity becomes almost uniform and it exhibits plasticity.
【００１２】硬化性シリコーンゴム組成物には、大別し
て白金系触媒使用の付加反応硬化型シリコーンゴム組成
物と有機過酸化物触媒使用のラジカル重合反応硬化型シ
リコーンゴム組成物と縮合反応硬化型シリコーンゴム組
成物があるが、各層間の接着性の点で前二者が好まし
く、比較的低温で急速に硬化し、副生物が発生しない点
で付加反応硬化型が最も好ましい。硬化性シリコーンゴ
ム組成物には、大別して液状ないしペースト状のものと
粘土状のものがあるが、型内での流動性の点で液状ない
しペースト状のものが好ましく、かつ、チキソトロピッ
クなものが好ましい。硬化性シリコーンゴム組成物は、
流動性と機械的強度の点で補強性充填剤を含有してい
て、硬化後のＪＩＳ−Ｋ６３０１による硬度が２０〜７
０のものが好ましく、歯科用成型体が義歯床であるとき
は、３０〜５０が好ましい。The curable silicone rubber composition is roughly classified into an addition reaction curable silicone rubber composition using a platinum catalyst, a radical polymerization reaction curable silicone rubber composition using an organic peroxide catalyst, and a condensation reaction curable silicone. Although there are rubber compositions, the former two are preferable in terms of adhesiveness between respective layers, and the addition reaction curable type is most preferable in that it cures rapidly at a relatively low temperature and does not generate by-products. The curable silicone rubber composition is roughly classified into liquid or paste type and clay type, but liquid or paste type is preferable from the viewpoint of fluidity in the mold, and thixotropic one. Is preferred. The curable silicone rubber composition is
It contains a reinforcing filler in terms of fluidity and mechanical strength, and has a hardness of 20 to 7 according to JIS-K6301 after curing.
0 is preferable, and when the dental molding is a denture base, 30 to 50 is preferable.
【００１３】メタクリル系樹脂とそのモノマーとラジカ
ル重合触媒からなる餅状混合物と硬化性シリコーンゴム
組成物との混合物は、両者を重合・硬化しないような温
度の下でヘラ、ミキサー等で混合してつくる。両者の比
率は、接着性、その耐久性の点で重量比で（２：８）〜
（８：２）であり、（４：６）〜（６：４）がより好ま
しい。両者を混合後、減圧下に置いて抱き込んだ気泡を
除去すると接着強度が一段と向上する。A mixture of a rice cake-like mixture composed of a methacrylic resin, its monomer and a radical polymerization catalyst and a curable silicone rubber composition is mixed with a spatula, a mixer or the like at a temperature at which neither of them polymerizes nor cures. to make. The ratio of both is (2: 8) by weight in terms of adhesiveness and durability.
(8: 2), and (4: 6) to (6: 4) are more preferable. After mixing the two, the mixture is placed under reduced pressure to remove the entrapped bubbles, and the adhesive strength is further improved.
【００１４】成型に使用する型は、内容物を密封でき、
加圧加熱に耐え得るものであれば石こう型、金型、セラ
ミック型等のいずれでもよいが割型が操作しやすい。石
こう型は種々の形状の陰型をつくりやすく、成型後に石
こう層を破壊して成型物を取り出せるので便利である。The mold used for molding can seal the contents,
Any type such as a gypsum mold, a metal mold, a ceramic mold, etc. may be used as long as it can withstand pressure heating, but the split mold is easy to operate. Gypsum molds are convenient because it is easy to make negative molds of various shapes, and the molded product can be taken out by breaking the gypsum layer after molding.
【００１５】本発明の歯科用成型体を製造するには、型
内にメタクリル系樹脂とそのモノマーとラジカル重合触
媒からなる餅状混合物を層状に填入し、ついで該餅状混
合物と硬化性シリコーンゴム組成物との混合物を該餅状
混合物に密接するように層状に填入し、ついで該餅状混
合物と硬化性シリコーンゴム組成物との混合物層に密接
するように硬化性シリコーンゴム組成物を層状に填入す
る。この際填入順序を全く逆にしてもよい。型内面およ
び割型の接合面にアルギン酸ナトリウム水溶液のような
離型剤をうすく塗布しておくと、成型品が取り出しやす
い。ついで型を閉じて加圧加熱下内容物を硬化させる。
加熱時間と温度は内容物のすべてが完全に硬化する条件
を適宜選ぶとよい。型を加圧加熱するには、型をプレス
等で挟圧して温水浴または熱風オーブン中に投入しても
よいし、型を電熱プレス成型機の熱板間に挟圧して加熱
してもよい。内容物が硬化後、型を取り出して放冷し、
型を開いて成型物を取り出す。In order to produce the dental molding of the present invention, a rice cake-like mixture composed of a methacrylic resin, its monomer and a radical polymerization catalyst is layered in a mold, and then the rice cake-like mixture and a curable silicone. A mixture with a rubber composition is layered so as to be in intimate contact with the dough-like mixture, and then a curable silicone rubber composition is provided so as to be in intimate contact with a mixture layer of the dough-like mixture and a curable silicone rubber composition. Fill in layers. At this time, the filling order may be reversed. If a mold release agent such as an aqueous solution of sodium alginate is thinly applied to the inner surface of the mold and the joint surface of the split mold, the molded product can be easily taken out. Then, the mold is closed and the contents are cured under pressure and heating.
The heating time and temperature may be appropriately selected under the condition that all the contents are completely cured. To press and heat the mold, the mold may be pressed with a press or the like and placed in a hot water bath or a hot air oven, or the mold may be heated by being pressed between hot plates of an electric heat press molding machine. . After the contents are hardened, remove the mold and let it cool.
Open the mold and take out the molding.
【００１６】[0016]
【実施例】次に、この発明の実施例を説明する。実施例
中の部数は重量部であり、粘度は２５℃における値であ
る。Embodiments of the present invention will be described below. The number of parts in the examples is part by weight, and the viscosity is the value at 25 ° C.
【００１７】[0017]
【参考例１】図１は、この発明の歯科用成型体の接着性
を試験するための一体化成型体の斜視図であり、ポリメ
チルメタクリレート樹脂層１とシリコーンゴム層２と
が、ポリメチルメタクリレート樹脂とシリコーンゴムの
混合物層３を介して接着し一体化している。ここで、シ
リコーンゴム層は白金系触媒使用の付加反応硬化型シリ
コーンゴムでできており、ポリメチルメタクリレート樹
脂とシリコーンゴムの配合比率は重量比で２：１であ
る。この一体化成型体は、次の方法により製造した。す
なわち、歯科用の金属製フラスコ一対のうち、フラスコ
の下盒に石こう泥をほぼいっぱいに流し込み、６０mm×
１３mm×１９mmのワックスブロックを６０mm×１３mmの
一面が上面となるように埋没させた。石こうが硬化後、
石こう面に離型剤を塗布し、これにフラスコの上盒を重
ねて、これに石こう泥を流し込み硬化させた。次に、上
盒と下盒を分離しワックスブロックを溶融して流出さ
せ、６０mm×１３mm×１６mmの陰型を有する石こう割型
を作成した。平均粒子径５０μｍのポリメチルメタクリ
レート樹脂球状粒子とメチルメタクリレートを重合比で
２：１の比率で混合し、両者の０.５重量％のベンゾイ
ルパーオキサイドを添加混合し、シャーレ中に保管し
た。室温下で放置してつきたての餅状になったところ
で、上記石こう型の陰型の左端２８mmを埋めるように中
子を使って填入した。Reference Example 1 FIG. 1 is a perspective view of an integrated molded body for testing the adhesiveness of the dental molded body of the present invention, in which the polymethylmethacrylate resin layer 1 and the silicone rubber layer 2 are polymethylmethacrylate. They are bonded and integrated through a mixture layer 3 of a methacrylate resin and a silicone rubber. Here, the silicone rubber layer is made of an addition reaction curable silicone rubber using a platinum-based catalyst, and the compounding ratio of the polymethylmethacrylate resin and the silicone rubber is 2: 1 by weight. This integrated molded body was manufactured by the following method. That is, of a pair of dental metal flasks, gypsum mud is poured almost completely into the bottom porcelain of the flask, and 60 mm ×
A 13 mm × 19 mm wax block was embedded so that one surface of the 60 mm × 13 mm was the upper surface. After the gypsum hardens,
A mold release agent was applied to the gypsum surface, the flask was overlaid with the mold release agent, and gypsum mud was poured into the mold to cure it. Next, the upper porcelain and the lower porcelain were separated, and the wax block was melted and allowed to flow out to prepare a plaster split mold having a negative mold of 60 mm × 13 mm × 16 mm. Polymethylmethacrylate resin spherical particles having an average particle diameter of 50 μm and methylmethacrylate were mixed at a polymerization ratio of 2: 1, 0.5% by weight of both of them was added and mixed, and stored in a petri dish. When left standing at room temperature to form a freshly moistened rice cake, the gypsum-shaped negative mold was filled with a core so as to fill the left end 28 mm.
【００１８】次に、上記の餅状混合物と白金系触媒使用
の付加反応硬化型シリコーンゴム組成物を重量比で２：
１の比率でよく混合して、石こう型内の餅状混合物に隣
接するように４mmの長さに填入した。なお、上記の付加
反応硬化型シリコーンゴム組成物は、両末端ビニル基封
鎖ジメチルポリシロキサン（粘度２０００cs）１００
部、（ＣＨ3）2ＣＨ2＝ＣＨＳｉＯ1/2単位とＳｉＯ4/2
単位からなるトルエン可溶性共重合体４０部、両末端ト
リメチルシロキシ基封鎖メチルハイドロジェンポリシロ
キサン（粘度１０cs）７.０部、ヘキサメチルジシラザ
ンで疎水化処理した比表面積２００ｍ2／ｇのヒューム
ドシリカ３７部、塩化白金酸とジビニルテトラメチルジ
シロキサンの錯体触媒を白金重量として全体量の１２pp
mおよびメチルビニルシクロテトラシロキサン０.５部を
均一に混合したものであり、チキソトロピックなペース
ト状である。硬化後の硬度は５０である。Next, the above-mentioned rice cake-like mixture and the addition reaction-curable silicone rubber composition using a platinum catalyst are used in a weight ratio of 2:
The mixture was mixed well at a ratio of 1 and filled in a length of 4 mm so as to be adjacent to the dough-like mixture in the plaster mold. The addition reaction-curable silicone rubber composition described above was used as a dimethylpolysiloxane with a vinyl group at both ends blocked (viscosity 2000 cs) 100.
Part, (CH 3 ) 2 CH 2 = CHSiO 1/2 unit and SiO 4/2
40 parts of a toluene-soluble copolymer composed of units, 7.0 parts of methylhydrogenpolysiloxane blocked at both ends with trimethylsiloxy groups (viscosity 10 cs), fumed silica having a specific surface area of 200 m 2 / g hydrophobized with hexamethyldisilazane 37 parts, complex catalyst of chloroplatinic acid and divinyltetramethyldisiloxane as platinum weight of 12 pp
It is a uniform mixture of m and 0.5 part of methylvinylcyclotetrasiloxane, and is in the form of a thixotropic paste. The hardness after curing is 50.
【００１９】この付加反応硬化型シリコーンゴム組成物
を、石こう型内の餅状混合物と付加反応硬化型シリコー
ンゴム組成物との混合物に隣接するように２８mmの長さ
に填入した。石こう面同士が接するように上下のフラス
コを合わせ、フラスコプレスで加圧し、クランプで両フ
ラスコを留めた。これを７０℃の水中に６０分間投入
し、ついで１００℃の水中に１２０分間投入した。水中
から取り出して室温下放冷し、フラスコを開け、石こう
を壊して大きさが６０mm×１３mm×１９mmの成型体を取
り出した。メタクリル樹脂とそのモノマーの餅状混合
層、餅状混合物と付加反応硬化型シリコーンゴム組成物
との混合物層、付加反応硬化型シリコーンゴム組成物層
いずれも十分に硬化しており、かつ、相互によく接着し
ており、成型体の両端をもって４５°の角度に５０回屈
曲しても相互に剥離しなかった。成型体の両端を反対方
向に引張ったところシリコーンゴム層の凝集破壊であっ
た。この成型作業を５回繰り返したが上記同様の結果を
得た。The addition reaction-curable silicone rubber composition was filled to a length of 28 mm so as to be adjacent to the mixture of the dough-like mixture in the gypsum mold and the addition reaction-curable silicone rubber composition. The upper and lower flasks were combined so that the gypsum surfaces were in contact with each other, pressure was applied with a flask press, and both flasks were clamped with a clamp. This was put in 70 ° C. water for 60 minutes, and then put in 100 ° C. water for 120 minutes. It was taken out from water, allowed to cool at room temperature, the flask was opened, the gypsum was broken, and a molded body having a size of 60 mm × 13 mm × 19 mm was taken out. The methacrylic resin and its monomer are mixed in a dough-like mixture layer, the mixture layer of the dough-like mixture and an addition reaction-curable silicone rubber composition, and the addition reaction-curable silicone rubber composition layer are both sufficiently cured, and mutually They were well adhered to each other, and did not separate from each other even when they were bent 50 times at an angle of 45 ° with both ends of the molded body. When both ends of the molded body were pulled in opposite directions, cohesive failure of the silicone rubber layer occurred. This molding operation was repeated 5 times, but the same results as above were obtained.
【００２０】[0020]
【比較参考例１】参考例１において、餅状混合物と付加
反応硬化型シリコーンゴム組成物との混合物を使用しな
い以外は、同一の条件でポリメチルメタクリレート樹脂
とシリコーンゴムの一体化成型体を製造した。この成型
体の両端をもって４５゜の角度に４〜５回屈曲ところ部
分的に剥離した。この成型体の両端を反対方向に引っ張
ったところポリメチルメタクリレート樹脂層とシリコー
ンゴム層の界面剥離が主体であった。この成型作業を５
回繰り返したが上記同様の結果を得た。[Comparative Reference Example 1] In Reference Example 1, an integrated molded product of polymethylmethacrylate resin and silicone rubber was produced under the same conditions except that the mixture of the rice cake-like mixture and the addition reaction curable silicone rubber composition was not used. did. Both ends of this molded body were bent 4 to 5 times at an angle of 45 ° and were partially peeled off. When both ends of this molded body were pulled in opposite directions, the interfacial peeling between the polymethylmethacrylate resin layer and the silicone rubber layer was the main. This molding work 5
Repeated times, the same results as above were obtained.
【００２１】[0021]
【参考例２】参考例１における餅状混合物と付加反応硬
化型シリコーンゴム組成物の混合比を重量比で１：２に
した他は同様の条件で一体化成型体を製造し、参考例１
と同様の結果を得た。Reference Example 2 An integrated molded body was produced under the same conditions except that the mixing ratio of the rice cake-like mixture and the addition reaction-curable silicone rubber composition in Reference Example 1 was set to 1: 2 by weight.
Similar results were obtained.
【００２２】[0022]
【実施例１】図２は、この発明の実施例の歯科用成型体
である義歯床の斜視図である。人工歯４が植立した基部
５はポリメチルメタクリレート樹脂製であり、ポリメチ
ルメタクリレート樹脂とシリコーンゴムとの混合物層３
を介してシリコーンゴム層２により裏装されている。こ
こで、シリコーンゴム層２は白金系触媒使用の付加反応
硬化型シリコーンゴムでできており、混合層３のポリメ
チルメタクリレート樹脂とシリコーンゴムの配合比率は
重量比で１：１である。[Embodiment 1] FIG. 2 is a perspective view of a denture base which is a dental molded body according to an embodiment of the present invention. The base 5 on which the artificial tooth 4 is planted is made of polymethylmethacrylate resin, and the mixture layer 3 of polymethylmethacrylate resin and silicone rubber is used.
It is lined with a silicone rubber layer 2 via. Here, the silicone rubber layer 2 is made of addition reaction-curable silicone rubber using a platinum-based catalyst, and the mixing ratio of the polymethylmethacrylate resin and the silicone rubber in the mixing layer 3 is 1: 1 by weight.
【００２３】この歯科用成型体は次の方法により製造さ
れた。すなわち、患者の口腔内の形態の型取りにより作
られた模型上で人工歯を植立し、排列したろう義歯を作
製した。これを歯科用フラスコ内の石こう泥中に埋没
し、石こうを固めた。歯科用フラスコを加熱して流ろう
して石こう割型を作製した。実施例１のポリメチルメタ
クリレート樹脂とメチルメタクリレートとベンゾイルパ
ーオキサイドからなる餅状混合物と同じ餅状混合物の一
部を石こう割型の陰型内に填入し、上記餅状混合物と付
加反応硬化型シリコーンゴム組成物の重量比で１：１の
混合物を上記餅状混合物層上に薄く填入し、上記餅状混
合物と付加反応硬化型シリコーンゴム組成物の混合物層
上に付加反応硬化型シリコーンゴム組成物を填入した。
ここで、付加反応硬化型シリコーンゴム組成物は、両末
端ビニル基封鎖ジメチルポリシロキサン（粘度５０００
cs）１００部、両末端シラノール基封鎖メチルビニルシ
ロキサン（粘度４０cs）６.０部、ジメチルジクロルシ
ランで表面処理した比表面積２００ｍ2／ｇのヒューム
ドシリカ３５部、両末端トリメチルシロキシ基封鎖メチ
ルハイドロジェンポリシロキサン３.４部および塩化白
金酸を白金重量として組成物全体量の１０ppmからな
り、室温下でチキソトロピックなペースト状を呈してい
た。硬化後の硬度は４０である。This dental molding was manufactured by the following method. That is, artificial teeth were planted on a model made by patterning the morphology of the patient's oral cavity to prepare an arranged wax denture. This was immersed in gypsum mud in a dental flask to solidify the gypsum. The dental flask was heated and run to prepare a plaster mold. A part of the same rice cake-like mixture of the polymethylmethacrylate resin of Example 1, methyl methacrylate and benzoyl peroxide was placed in a gypsum split type negative mold, and the above rice cake-like mixture and an addition reaction curing type. A mixture of the silicone rubber composition in a weight ratio of 1: 1 is thinly filled on the above-mentioned rice cake-like mixture layer, and the addition reaction-curing type silicone rubber is added on the mixture layer of the above-mentioned rice cake-like mixture and the addition reaction-curable silicone rubber composition. The composition was filled.
Here, the addition reaction-curable silicone rubber composition has a dimethylpolysiloxane with a vinyl group at both ends blocked (viscosity of 5000).
cs) 100 parts, both ends silanol group-blocked methyl vinyl siloxane (viscosity 40 cs) 6.0 parts, dimethyldichlorosilane surface-treated 35 parts fumed silica having a specific surface area of 200 m 2 / g, both ends trimethylsiloxy group-blocked methyl It consisted of 3.4 parts of hydrogen polysiloxane and 10 ppm of the total amount of the composition based on the weight of platinum chloroplatinic acid, and was in the form of a thixotropic paste at room temperature. The hardness after curing is 40.
【００２４】上下フラスコを閉じフラスコプレスで挟圧
し、クランプで上下フラスコを留めた。これを７０℃の
水中に６０分間投入し、ついで１００℃の水中に１２０
分間投入後フラスコを取り出し、室温下放冷しフラスコ
を開け、石こうを破壊して、メタクリレート樹脂製基部
の裏面が、メタクリル樹脂と付加反応硬化型シリコーン
ゴム組成物の１：１混合物層を介して付加反応硬化型シ
リコーンゴム層で裏層された義歯床を取り出した。この
義歯床は、ポリメチルメタクリレート樹脂製基部、ポリ
メチルメタクリレート樹脂と付加反応硬化型シリコーン
ゴムとの混合物層および付加反応硬化型シリコーンゴム
層のいずれでもよく硬化しており、かつ、相互によく接
着しており、義歯床裏面は弾力感に富んでいた。この成
型作業を３回繰り返したが、上記同様の良好な結果を得
た。The upper and lower flasks were closed, the flask was pressed with a flask press, and the upper and lower flasks were clamped. Put this in water at 70 ° C for 60 minutes, then put it in water at 100 ° C for 120 minutes.
After charging for 1 minute, the flask was taken out, allowed to cool at room temperature, opened, the gypsum was broken, and the back side of the methacrylate resin base was added via a 1: 1 mixture layer of the methacrylic resin and the addition reaction curable silicone rubber composition. The denture base backed with the reaction-curable silicone rubber layer was taken out. This denture base is well cured with both a polymethylmethacrylate resin base, a mixture layer of polymethylmethacrylate resin and an addition reaction curable silicone rubber, and an addition reaction curable silicone rubber layer, and they adhere well to each other. The back of the denture base was rich in elasticity. This molding operation was repeated 3 times, and good results similar to the above were obtained.
【００２５】[0025]
【実施例２】実施例１における付加反応硬化型シリコー
ンゴムに替えて、有機過酸化物触媒使用のラジカル反応
硬化型シリコーンゴム組成物を使用する以外は実施例３
と同一条件で歯科用成型体を製造した。ただし、歯科用
成型体をフラスコから取り出した後、７０℃の熱水中に
２時間浸漬して有機過酸化物の分解物を除去した。ここ
で、有機過酸化物触媒使用のラジカル反応硬化型シリコ
ーンゴム組成物は、両末端ビニル基封鎖ジメチルポリシ
ロキサン（粘度１００００cs）１００部、（ＣＨ3）2Ｃ
Ｈ2＝ＣＨＳｉＯ1/2単位とＳｉＯ4/2単位からなるトル
エン可溶性共重合体レジン５部、ジメチルジクロルシラ
ンで処理した比表面積２００ｍ2／ｇのヒュームドシリ
カ３０部、１,１−ビス−ｔ−ブチルパーオキシ−３,
３,３−トリメチルシクロヘキサン１.０部からなるチキ
ソトロピックなペースト状物であり、硬化後の硬度が３
５である。この義歯床は、メチルメタクリレート樹脂製
基部、メチルメタクリレート樹脂とラジカル反応硬化型
シリコーンゴムとの混合層、ラジカル反応硬化型シリコ
ーンゴム層のいずれでもよく硬化しており、かつ、相互
によく接着しており、義歯床裏面は弾力感に富んでい
た。この成型作業を３回繰り返したが、上記同様の良好
な結果を得た。Example 2 Example 3 was repeated except that a radical reaction curable silicone rubber composition using an organic peroxide catalyst was used instead of the addition reaction curable silicone rubber in Example 1.
A dental molding was manufactured under the same conditions as described above. However, after removing the molded dental product from the flask, it was immersed in hot water at 70 ° C. for 2 hours to remove the decomposition product of the organic peroxide. Here, the radical reaction curable silicone rubber composition using an organic peroxide catalyst is 100 parts of dimethylpolysiloxane with a vinyl group blocked at both ends (viscosity 10000 cs), (CH 3 ) 2 C
H 2 ═CH 5 parts of a toluene-soluble copolymer resin composed of SiO 1/2 units and SiO 4/2 units, 30 parts of fumed silica having a specific surface area of 200 m 2 / g treated with dimethyldichlorosilane, 1,1-bis -T-butylperoxy-3,
This is a thixotropic paste-like substance consisting of 1.0 part of 3,3-trimethylcyclohexane and having a hardness of 3 after curing.
It is 5. This denture base is well cured with any of a methyl methacrylate resin base, a mixed layer of methyl methacrylate resin and radical reaction curable silicone rubber, and a radical reaction curable silicone rubber layer, and they adhere well to each other. And the back of the denture base was very elastic. This molding operation was repeated 3 times, and good results similar to the above were obtained.
【００２６】[0026]
【発明の効果】この発明の歯科用成型体はメタクリル樹
脂層とシリコーンゴム層とが、メタクリル樹脂とシリコ
ーンゴムの混合層を介して一体化されているので各層間
の接着性、その耐久性が優れているという特徴がある。EFFECT OF THE INVENTION In the dental molding of the present invention, the methacrylic resin layer and the silicone rubber layer are integrated through the mixed layer of the methacrylic resin and the silicone rubber. It is characterized by being excellent.
【図１】この発明の参考例１の一体化成型体の斜視図で
ある。FIG. 1 is a perspective view of an integrated molded body of Reference Example 1 of the present invention.
【図２】この発明の実施例１の歯科用成型体である義歯
床の平面図である。FIG. 2 is a plan view of a denture base which is a dental molded body of Example 1 of the present invention.
【図３】この発明の実施例１の歯科用成型体である義歯
床の裏面図である。FIG. 3 is a back view of the denture base which is the dental molded body of Example 1 of the present invention.
【図４】図２におけるＩ−Ｉ線の断面図である。FIG. 4 is a sectional view taken along line I-I in FIG.
１ ポリメチルメタクリレート樹脂層 ２ シリコーンゴム層 ３ ポリメチルメタクリレート樹脂とシリコーンゴムの
混合物層 ４ 人工歯 ５ ポリメチルメタクリレート樹脂製基部1 Polymethylmethacrylate resin layer 2 Silicone rubber layer 3 Mixture layer of polymethylmethacrylate resin and silicone rubber 4 Artificial tooth 5 Polymethylmethacrylate resin base
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｋ 33:04 83:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B29K 33:04 83:00
Claims (2)
とが、メタクリル系樹脂とシリコーンゴムの混合物層
［ただし、メタクリル系樹脂とシリコーンゴムの配合比
率が重量比で（２：８）〜（８：２）である］を介して
一体化されていることを特徴とする歯科用成型体。1. A methacrylic resin layer and a silicone rubber layer are a mixture layer of a methacrylic resin and a silicone rubber [where the mixing ratio of the methacrylic resin and the silicone rubber is (2: 8) to (8: 2) It is integrated via [].
り、シリコーンゴム層が裏装材である請求項１記載の歯
科用成型体。2. The dental molding according to claim 1, wherein the methacrylic resin layer is a denture base and the silicone rubber layer is a backing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27134993A JPH0753644B2 (en) | 1993-10-04 | 1993-10-04 | Dental molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27134993A JPH0753644B2 (en) | 1993-10-04 | 1993-10-04 | Dental molding |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60208392A Division JPH072402B2 (en) | 1985-09-20 | 1985-09-20 | Method for producing integrated molding of methacrylic resin and silicone rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0731630A JPH0731630A (en) | 1995-02-03 |
| JPH0753644B2 true JPH0753644B2 (en) | 1995-06-07 |
Family
ID=17498832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27134993A Expired - Lifetime JPH0753644B2 (en) | 1993-10-04 | 1993-10-04 | Dental molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753644B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3897763B2 (en) * | 2003-01-29 | 2007-03-28 | 久雄 本間 | Denture with denture |
| JP5416693B2 (en) * | 2008-03-31 | 2014-02-12 | 好伯 清見 | Denture and manufacturing method thereof |
-
1993
- 1993-10-04 JP JP27134993A patent/JPH0753644B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0731630A (en) | 1995-02-03 |
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