JPS6274357A - Gypsum mold for forming floor denture - Google Patents
Gypsum mold for forming floor dentureInfo
- Publication number
- JPS6274357A JPS6274357A JP60212670A JP21267085A JPS6274357A JP S6274357 A JPS6274357 A JP S6274357A JP 60212670 A JP60212670 A JP 60212670A JP 21267085 A JP21267085 A JP 21267085A JP S6274357 A JPS6274357 A JP S6274357A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- denture
- plaster mold
- plaster
- gypsum mold
- 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.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、床義歯を製造するための石膏型に関し、さら
に詳しくは、熱可塑性樹脂を圧縮成形によって床義歯に
成形する際に好適に使用される石膏型に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a plaster mold for manufacturing dentures, and more specifically, it is suitable for use when molding thermoplastic resin into dentures by compression molding. Regarding plaster molds.
（従来の技術及びその問題点）
床義歯作成用の石膏型はその表面が本質的に多孔質であ
る。また、石膏型を用いて熱可塑性樹脂を射出成形又は
圧縮成形する場合、石膏型を所定の温度まで加熱する必
要があり、特にポリサルホン、ポリエーテルサルホン
ような高い温度で可塑性を示す樹脂を圧．縮成形する際
には、石膏型の温度を１００〜２００°Ｃの高温にする
必要がある。硫酸カルシウムの二水和物からなる石膏型
は加熱によって、半水物を経由して無水物に順次変化す
るが、この変化に伴って石膏型の強度が低下する。この
ように強度が低下した多孔質の石膏型を用いて床義歯の
成形を行うと、成形義歯床に石膏が混入し表面が荒れた
床義歯しか得られず、床義歯の研磨に多大な時間及び労
力を要するばかりでなく、粘膜印象を再現できな（なる
。(Prior art and its problems) The surface of a plaster mold for making a denture is essentially porous. Furthermore, when injection molding or compression molding thermoplastic resin using a plaster mold, it is necessary to heat the plaster mold to a predetermined temperature. ．． When performing compression molding, it is necessary to raise the temperature of the plaster mold to a high temperature of 100 to 200°C. When a plaster mold made of calcium sulfate dihydrate is heated, it sequentially changes from a hemihydrate to an anhydride, but as this change occurs, the strength of the plaster mold decreases. If a porous plaster mold with reduced strength is used to mold a denture, plaster will get mixed into the molded denture base, resulting in a denture with a rough surface, and it will take a lot of time to polish the denture. Not only does this require a lot of effort, but it also makes it impossible to reproduce the mucosal impression.
（問題点を解決するための技術的手段）本発明は、上記
した問題点のない床義歯製造用の石膏型を提供する。(Technical means for solving the problems) The present invention provides a plaster mold for manufacturing dentures that does not have the above-mentioned problems.
本発明によれば、表面にシリコーン樹脂のコーティング
層が形成されている床義歯製造用の石膏型が提供される
。According to the present invention, there is provided a plaster mold for manufacturing dentures, the surface of which is coated with a silicone resin coating layer.
本発明において、コーティング層を形成するシリコーン
樹脂とは、基本連鎖単位として一Ｓ ｉ （Ｒ） ２
−０ − （式中、Ｒはアルキル基、アルキレン基、ア
リール基を示す。）を有し、相異なる分子鎖中のＳｉが
部分的に酸素原子で結合されている、三次元的な網目構
造を有する熱硬化性樹脂である。In the present invention, the silicone resin forming the coating layer has 1S i (R) 2 as a basic chain unit.
-0- (wherein R represents an alkyl group, an alkylene group, or an aryl group), and has a three-dimensional network structure in which Si in different molecular chains are partially bonded through oxygen atoms. It is a thermosetting resin with
シリコーン樹脂のコーティング層を形成する方法として
は、初期重合状態にあるシリコーン樹脂を有機溶媒に熔
解したシリコーンフェスを、石膏型に塗布し、ついで触
媒の作用あるいは加熱によって、高重合度の重合体に転
化する方法が好ましく採用される。The method for forming a coating layer of silicone resin is to apply a silicone face made by dissolving silicone resin in an initial polymerized state in an organic solvent onto a plaster mold, and then convert it into a polymer with a high degree of polymerization by the action of a catalyst or by heating. A method of conversion is preferably employed.
シリコーンフェスを石膏型に塗布する方法については特
に制服はなく、フェスを石膏型表面に刷毛塗する方法、
石膏型表面にフェスを噴霧して塗布する方法、石膏型を
フェス中に浸漬する方法などを採用することができる。There is no specific method for applying silicone face to a plaster mold.
Methods such as spraying and applying the fest on the surface of the plaster mold, and immersing the gypsum mold in the fest can be adopted.
このようにして得られる石膏型の表面には、熱安定性が
良好で、平滑性の高いシリコーン樹脂のコーティング層
が形成されているため、床義歯の作成中に石膏型の表面
が荒れることがなく、表面が滑らかな床義歯を得ること
ができる。さらに、成形で得られる床義歯を石膏型から
きわめて簡単に取り出すことができる。The surface of the plaster mold obtained in this way is coated with a silicone resin coating layer that has good thermal stability and is highly smooth, so the surface of the plaster mold will not become rough during the creation of the denture. It is possible to obtain a denture with a smooth surface. Furthermore, the molded denture can be removed from the plaster mold very easily.
この発明の石膏型は、熱可塑性樹脂を圧縮成形して床義
歯を製造する際に好適に使用される。The plaster mold of the present invention is suitably used when manufacturing a denture by compression molding a thermoplastic resin.
熱可塑性樹脂としては、一般に床義歯作成用の樹脂とし
て使用されている、ポリサルホン、ポリエーテルサルホ
ン、ポリカーボネートのような耐熱性の熱可塑性樹脂が
好ましく使用される。As the thermoplastic resin, heat-resistant thermoplastic resins such as polysulfone, polyethersulfone, and polycarbonate, which are generally used as resins for making dentures, are preferably used.
圧縮成形はそれ自体公知の方法に従って行うことができ
る。例えば、分割石膏型の下型に熱可塑性樹脂を乗せ、
その軟化点近傍の温度の雰囲気中で熱可塑性樹脂を軟化
させ、ついで、上型を乗せ、上下石膏型に圧力をかけて
、床義歯を製造する方法を採用することができる。Compression molding can be carried out according to methods known per se. For example, placing thermoplastic resin on the bottom mold of a split plaster mold,
It is possible to adopt a method of manufacturing a denture by softening the thermoplastic resin in an atmosphere with a temperature near its softening point, then placing an upper mold on it and applying pressure to the upper and lower plaster molds.
（実施例）
以下に実施例を示す
実施例１
上顎無歯顎の石膏模型を用いて蝋義歯を作製し、埋没、
流蝋を行って、床義歯作製用の二分割石膏型を調製した
。(Example) Examples are shown below. Example 1 Wax dentures were made using a plaster model of an edentulous upper jaw, and implanted and
A two-part plaster mold for making a denture was prepared by pouring wax.
下型を室温で放置し型の上に水が認められなくなった後
、シリコーン樹脂（トーレシリコーン製、５Ｒ−２４０
２）を塗布し、１８０゛Ｃで１．５時間加熱した。シリ
コーン樹脂の滑らかなコーティング層が形成された石膏
型が得られた。After the lower mold was left at room temperature and no water was observed on the mold, silicone resin (manufactured by Toray Silicone, 5R-240) was applied.
2) was applied and heated at 180°C for 1.5 hours. A plaster mold was obtained with a smooth coating layer of silicone resin.
この石膏下型にポリサルホン板を乗せ、３５０℃で５分
加熱してポリサルホンを軟化させた後、予め１５０°Ｃ
で乾燥した上型を乗せ、圧縮成形を行った。Place a polysulfone board on this plaster mold, heat it at 350°C for 5 minutes to soften the polysulfone, and then heat it to 150°C in advance.
A dried upper mold was placed on the mold and compression molding was performed.
成形された床義歯の表面は滑らかで光沢があり、石膏型
と床義歯との分離も極めて良好であった。The surface of the molded denture was smooth and shiny, and the separation between the plaster mold and the denture was very good.
Claims (1)
る床義歯作製用石膏型。A plaster mold for making dentures with a silicone resin coating layer formed on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60212670A JPS6274357A (en) | 1985-09-27 | 1985-09-27 | Gypsum mold for forming floor denture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60212670A JPS6274357A (en) | 1985-09-27 | 1985-09-27 | Gypsum mold for forming floor denture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6274357A true JPS6274357A (en) | 1987-04-06 |
| JPH0233383B2 JPH0233383B2 (en) | 1990-07-26 |
Family
ID=16626452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60212670A Granted JPS6274357A (en) | 1985-09-27 | 1985-09-27 | Gypsum mold for forming floor denture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6274357A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533350A (en) * | 1991-08-01 | 1993-02-09 | Ohbayashi Corp | Slope frame and filling construction using same |
| JPH06272257A (en) * | 1993-03-17 | 1994-09-27 | Oyo Kikaku:Kk | Execution method for steep slope fill |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0466692U (en) * | 1990-10-12 | 1992-06-12 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838389A (en) * | 1981-08-29 | 1983-03-05 | Daikin Ind Ltd | Compressor |
-
1985
- 1985-09-27 JP JP60212670A patent/JPS6274357A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838389A (en) * | 1981-08-29 | 1983-03-05 | Daikin Ind Ltd | Compressor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533350A (en) * | 1991-08-01 | 1993-02-09 | Ohbayashi Corp | Slope frame and filling construction using same |
| JPH06272257A (en) * | 1993-03-17 | 1994-09-27 | Oyo Kikaku:Kk | Execution method for steep slope fill |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0233383B2 (en) | 1990-07-26 |
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