JPS6136805B2 - - Google Patents
Info
- Publication number
- JPS6136805B2 JPS6136805B2 JP58073253A JP7325383A JPS6136805B2 JP S6136805 B2 JPS6136805 B2 JP S6136805B2 JP 58073253 A JP58073253 A JP 58073253A JP 7325383 A JP7325383 A JP 7325383A JP S6136805 B2 JPS6136805 B2 JP S6136805B2
- Authority
- JP
- Japan
- Prior art keywords
- styrene
- resin composition
- acrylic resin
- elastomer
- denture
- 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
Links
- 239000000203 mixture Substances 0.000 claims description 17
- 239000004925 Acrylic resin Substances 0.000 claims description 15
- 229920000178 Acrylic resin Polymers 0.000 claims description 15
- 239000002174 Styrene-butadiene Substances 0.000 claims description 9
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 9
- 239000011115 styrene butadiene Substances 0.000 claims description 9
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 9
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 9
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical group COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000000806 elastomer Substances 0.000 claims description 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 229920001400 block copolymer Polymers 0.000 claims 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 claims 1
- 239000011342 resin composition Substances 0.000 claims 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims 1
- 239000000178 monomer Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 239000011505 plaster Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 210000001909 alveolar process Anatomy 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 210000001847 jaw Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002959 polymer blend Polymers 0.000 description 2
- 229920002633 Kraton (polymer) Polymers 0.000 description 1
- 229920013623 Solprene Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Landscapes
- Dental Preparations (AREA)
Description
【発明の詳細な説明】
この発明は歯科用アクリル系樹脂組成物に関す
る。DETAILED DESCRIPTION OF THE INVENTION This invention relates to a dental acrylic resin composition.
従来、有床義歯を成型するには、上顎もしくは
下顎の模型上に、先ずろう形で有床義歯の形状を
作成し、このろう形をせつこう泥内に埋入してせ
つこうを硬化させ、せつこう硬化後に上記ろう形
を熱溶出させてせつこう型内に凹所を形成し、該
凹所にアクリル系樹脂組成液を注入して放置重合
させ、しかるのちせつこう型を破壊して有床義歯
を取り出していた。それ故、従来の成型は多くの
工程を必要とするので非常に複雑であつた。 Traditionally, to mold a denture, the shape of the denture was first created in the shape of wax on a model of the upper or lower jaw, and the wax shape was embedded in plaster mud and the plaster was allowed to harden. After the plaster hardens, the wax shape is thermally eluted to form a recess in the plaster mold, and an acrylic resin composition is injected into the recess and left to polymerize, after which the mold is destroyed. He had taken out his dentures. Therefore, conventional molding is very complicated as it requires many steps.
またせつこう型の凹所に注入される従来のアク
リル系樹脂組成液は、メチルメタクリレートの液
状モノマーに、重合触媒を含むポリメチルメタク
リレートの粉末状ポリマーを混合して放置し、ポ
リマーの一部がモノマーに溶解されて適当な塑性
状になるのをまつてせつこう型内に注入されてい
たのである。そのため、従来のアクリル系樹脂組
成液は、適当な塑性になるまでに時間がかかり、
塑性程度の調節には熟練を要した。また、モノマ
ーにポリマーを混合した当初では、流動性が大き
く、せつこう型内に注入して重合させなければ塑
性状とならず良い成品が得られない。アクリル系
樹脂組成物に充填剤を添加して塑性を大きくする
ことができるが、この場合は流動性が低下して薄
い形状のせつこう型凹所にまで組成物が流入し難
く所望の形状のものが得られない。 In addition, the conventional acrylic resin composition liquid injected into a plaster-shaped recess is a mixture of a liquid monomer of methyl methacrylate and a powdered polymer of polymethyl methacrylate containing a polymerization catalyst, which is then left to stand until a portion of the polymer dissolves. It was poured into plaster molds after being dissolved in monomers and given the appropriate plasticity. Therefore, conventional acrylic resin composition liquids take time to reach appropriate plasticity.
Adjustment of the degree of plasticity required skill. Furthermore, when a polymer is initially mixed with a monomer, it has a high fluidity, and unless it is injected into a plaster mold and polymerized, it will not become plastic and a good product cannot be obtained. Fillers can be added to the acrylic resin composition to increase its plasticity, but in this case, the fluidity decreases and it is difficult for the composition to flow into the thin plaster-shaped recesses, making it difficult to obtain the desired shape. I can't get anything.
この発明は、上記した従来のアクリル系樹脂組
成物に、スチレン・ブタジエン系熱可塑性エラス
トマーを混合することによつてアクリル系樹脂組
成物に適当な塑性を付与し、かつ上記義歯床の製
造を簡略化したものである。 This invention imparts appropriate plasticity to the acrylic resin composition by mixing a styrene-butadiene thermoplastic elastomer into the conventional acrylic resin composition, and simplifies the production of the denture base. It has become.
すなわちこの発明は、メチルメタクリレートの
モノマーに、スチレン・ブタジエン系熱可塑性エ
ラストマー若しくは該エラストマーに水素添加し
たエラストマーを溶解し、該溶液にポリメチルメ
タクリレートを混合したことを特徴とする歯科用
アクリル系樹脂組成物である。 That is, this invention provides a dental acrylic resin composition characterized in that a styrene-butadiene thermoplastic elastomer or an elastomer obtained by hydrogenating the elastomer is dissolved in a methyl methacrylate monomer, and polymethyl methacrylate is mixed in the solution. It is a thing.
この発明のアクリル系樹脂組成物のメチルメタ
クリレートのモノマーに溶解されるスチレン・ブ
タジエン系熱可塑性エラストマーは、スチレン・
ブタジエン・スチレン又はスチレン・イソプレ
ン・スチレンのブロツクポリマーの構造を有する
もの、及びこれらコポリマーの二重結合を水素添
加によつて飽和したコポリマーであつて熱可塑性
を有している。 The styrene-butadiene thermoplastic elastomer dissolved in the methyl methacrylate monomer of the acrylic resin composition of this invention is a styrene-butadiene thermoplastic elastomer.
It has a structure of a block polymer of butadiene/styrene or styrene/isoprene/styrene, or a copolymer in which the double bonds of these copolymers are saturated by hydrogenation, and has thermoplasticity.
上記スチレン・ブタジエン系熱可塑性エラスト
マーの重合度は、メルトインデツクス0.1〜30の
範囲のものが適当であり、メルトインデツクスが
0.1未満の高重合度の場合は、加工性能の制約
上、メチルメタクリレートに対する混合比率が少
なくなり過ぎて、硬化後のポリマー混合物の硬度
が高くなり過ぎる。またメルトインデツクスが30
を越える低重合度の場合は、硬化後のポリマー混
合物の抗張力が小さくなり過ぎて不適当である。 The degree of polymerization of the above styrene-butadiene thermoplastic elastomer is suitably within the range of melt index 0.1 to 30;
In the case of a high polymerization degree of less than 0.1, the mixing ratio to methyl methacrylate becomes too small due to processing performance constraints, and the hardness of the polymer mixture after curing becomes too high. Also, the melt index is 30.
If the degree of polymerization is too low, the tensile strength of the cured polymer mixture will be too low, which is inappropriate.
これらのスチレン・ブタジエン系熱可塑性エラ
ストマーは、商品名カリフレツクス及びクレイト
ン（シエル化学社製）、又は商品名タフプレン及
びソルプレン（旭化成工業社製）として種々の性
質の製品が市販されている。 These styrene-butadiene thermoplastic elastomers are commercially available as products with various properties under the trade names CALIFLEX and KRATON (manufactured by Ciel Chemical Co., Ltd.), or trade names Tuffprene and Solprene (manufactured by Asahi Kasei Industries, Ltd.).
なお上記エラストマーは、衛生上および物性の
長期永続性の点からみて、可塑剤を含有せるもの
は避けなければならない。 Note that, from the viewpoint of hygiene and long-term durability of physical properties, the above-mentioned elastomers should avoid those containing plasticizers.
メチルメタクリレートの液状モノマーに添加さ
れるスチレン・ブタジエン系熱可塑性エラストマ
ーの割合は、モノマー１重量部に対してエラスト
マー0.1〜１重量部が適当であり、この割合は、
エラストマーの重合度もしくは、液状モノマーに
対する粉末状ポリマーの量の割合によつて適宜設
定される。 The appropriate ratio of the styrene-butadiene thermoplastic elastomer added to the liquid monomer of methyl methacrylate is 0.1 to 1 part by weight of the elastomer per 1 part by weight of the monomer, and this ratio is as follows:
It is appropriately set depending on the degree of polymerization of the elastomer or the ratio of the amount of powdered polymer to liquid monomer.
メチルメタクリレートの液状モノマー１重量部
に対するポリメチルメタクリレートのポリマーの
割合は0.2〜３重量部であることが好ましい。 The ratio of the polymethyl methacrylate polymer to 1 part by weight of the liquid monomer of methyl methacrylate is preferably 0.2 to 3 parts by weight.
この発明によるアクリル系樹脂組成物は、モノ
マー溶液にポリマーを混合した当初において、ペ
ースト状であり、外圧によつて容易に変形する可
塑性を有していると同時に、立体形が自重によつ
て変形しない賦形性をも備えている。従つて型に
圧入したときは型に沿つた所望の形状となり、圧
入後はその形状を維持しながら重合硬化される。
そして有床義歯を製作するには、顎の模型の上に
直接にこの発明のアクリル系樹脂組成物を盛り上
げて有床義歯の形態を付与し、その状態で重合硬
化させて有床義歯を得ることができる。 The acrylic resin composition according to the present invention is in the form of a paste when the polymer is mixed into the monomer solution, and has plasticity that easily deforms under external pressure, and at the same time, its three-dimensional shape deforms under its own weight. It also has the ability to form. Therefore, when it is press-fitted into a mold, it assumes a desired shape along the mold, and after press-fitting, it polymerizes and hardens while maintaining that shape.
In order to manufacture a denture, the acrylic resin composition of the present invention is applied directly onto the jaw model to give it the shape of a denture, and then polymerized and hardened in that state to obtain a denture. be able to.
またこの発明のアクリル系樹脂組成物を使用す
れば有床義歯の矯正を行なうことができる。たと
えば使用中の有床義歯と顎堤（口腔内の歯牙のな
くなつたあとの顎部分）との間に間隙を生じガタ
ついてきた場合に、有床義歯の粘膜面（義歯の顎
禎側に接触する面）にこの発明のアクリル系樹脂
組成物を盛り、患者の口腔内に挿入装置して咬合
させることによつて、顎堤によく密接した有床義
歯に矯正することができる。 Further, by using the acrylic resin composition of the present invention, dentures with fixed dentures can be corrected. For example, if a gap has formed between the denture in use and the alveolar ridge (the part of the jaw after the teeth have been lost) and the denture has become loose, By applying the acrylic resin composition of the present invention on the contacting surface of the patient and inserting the device into the patient's oral cavity and causing the patient to engage the patient, it is possible to correct the denture into a denture that is in close contact with the alveolar ridge.
上記のようにこの発明のアクリル系樹脂組成物
を使用すれば、有床義歯の製作、矯正が簡単にで
きる。 If the acrylic resin composition of the present invention is used as described above, dentures with dentures can be easily manufactured and corrected.
Claims (1)
ン・ブタジエン系熱可塑性エラストマー若しくは
該エラストマーに水素添加したエラストマーを溶
解し、この溶液にポリメチルメタクリレートを混
合したことを特徴とする歯科用アクリル系樹脂組
成物。 ２ スチレン・ブタジエン系熱可塑性エラストマ
ーが、スチレン・ブタジエン・スチレン又はスチ
レン・イソプレン・スチレンのブロツクコポリマ
ーである特許請求の範囲第１項記載の歯科用アク
リル系樹脂組成物。[Scope of Claims] 1. A dental acrylic system characterized by dissolving a styrene-butadiene thermoplastic elastomer or an elastomer obtained by hydrogenating the elastomer in a methyl methacrylate monomer, and mixing polymethyl methacrylate with this solution. Resin composition. 2. The dental acrylic resin composition according to claim 1, wherein the styrene-butadiene thermoplastic elastomer is a block copolymer of styrene-butadiene-styrene or styrene-isoprene-styrene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58073253A JPS59199618A (en) | 1983-04-25 | 1983-04-25 | Dental acrylic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58073253A JPS59199618A (en) | 1983-04-25 | 1983-04-25 | Dental acrylic resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59199618A JPS59199618A (en) | 1984-11-12 |
| JPS6136805B2 true JPS6136805B2 (en) | 1986-08-20 |
Family
ID=13512821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58073253A Granted JPS59199618A (en) | 1983-04-25 | 1983-04-25 | Dental acrylic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59199618A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5428311B2 (en) * | 2008-12-03 | 2014-02-26 | Ｊｓｒ株式会社 | Dental transparent resin composition and dental molding |
| WO2011048801A1 (en) * | 2009-10-23 | 2011-04-28 | クラレメディカル株式会社 | Polymerizable composition for dental applications and dental material comprising same |
-
1983
- 1983-04-25 JP JP58073253A patent/JPS59199618A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59199618A (en) | 1984-11-12 |
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