JP2010229072A - Soft lining material composition for dentistry - Google Patents

Soft lining material composition for dentistry Download PDF

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JP2010229072A
JP2010229072A JP2009077953A JP2009077953A JP2010229072A JP 2010229072 A JP2010229072 A JP 2010229072A JP 2009077953 A JP2009077953 A JP 2009077953A JP 2009077953 A JP2009077953 A JP 2009077953A JP 2010229072 A JP2010229072 A JP 2010229072A
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molecule
lining material
soft lining
silicone
material composition
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Takashi Kanbara
敬 蒲原
Hisashi Nakaseko
恒 中瀬古
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GC Corp
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GC Corp
GC Dental Industiral Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a silicone rubber-based soft lining material composition for dentistry which has good cutting and polishing properties and good adhesion durability to the denture base. <P>SOLUTION: The soft lining material composition for dentistry includes 100 pts.wt. silicone resin containing an SiO<SB>2</SB>unit in the molecule and further having a three-dimensional network having at least two aliphatic unsaturated hydrocarbons, 0.1-50 pts.wt. organohydrogenpolysiloxane having at least three hydrogens directly bonded to the silicon atom in the molecule, 1 ppm to 2 pts.wt., based on the sum total of the two components, silicone-soluble platinum compound, and 1-500 pts.wt. inorganic filler. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は義歯床を装着している人の粘膜や顎堤の状態が悪く、義歯の装着時に粘膜に疼痛を伴う場合にこれを緩和する目的として義歯床の粘膜面に用いて症状を改善する歯科用軟質裏装材組成物に関する。   The present invention improves the symptom by using it on the mucosal surface of the denture base for the purpose of relieving the condition of the mucous membrane and the ridge of the person wearing the denture base when the state of the mucous membrane and the ridge is bad and the mucous membrane is painful when the denture is mounted The present invention relates to a dental soft lining material composition.

粘膜や顎堤の状態が悪く義歯床の装着時に粘膜に疼痛を伴う場合、義歯床そのものの設計だけではこの疼痛を改善できないことがある。それは、義歯床自体がアクリル樹脂を主とした硬質の樹脂であり顎堤の退縮が激しく粘膜が薄くなると、この硬質の材料が粘膜に通常より強く当たってしまうことで疼痛が発生するからである。この疼痛を改善するために義歯床の粘膜面に軟質裏装材と呼ばれている材料を接着させる方法がある。この軟質裏装材としては、アクリル樹脂を使用したものやシリコーンゴムが使用されている。特に軟性の状態が長期にわたって持続するシリコーンゴムを素材としたシリコーン系軟質裏装材が広く使用されている。   If the condition of the mucous membrane and the ridge of the jaw is poor and the mucous membrane is painful when the denture base is mounted, the pain may not be improved only by designing the denture base itself. This is because the denture base itself is a hard resin mainly composed of acrylic resin, and if the ridge is severely retracted and the mucous membrane becomes thin, this hard material strikes the mucous membrane more strongly than usual, causing pain. . In order to improve this pain, there is a method in which a material called a soft lining material is adhered to the mucosal surface of the denture base. As this soft lining material, an acrylic resin or silicone rubber is used. In particular, silicone-based soft lining materials made of silicone rubber, which remains soft for a long time, are widely used.

従来の軟質裏装材は、アルケニル基を有すると共に特定構造と特定範囲内の粘度を有するオルガノポリシロキサンと、それとは異なる構造を有するオルガノハイドロジェンポリシロキサンと、シリコーン可溶性白金化合物と、特定範囲のBET比表面積を有する表面が疎水化された微粉末シリカと、特定範囲の平均粒径の熔融石英とが特定比率で構成されている義歯床用軟質裏装材組成物(例えば、特許文献1参照。)や、1分子中にけい素原子に結合したアルケニル基を少なくとも1個有するポリオルガノシロキサンと、2種類の特定構造を有するオルガノハイドロジェンポリシロキサンとヒドロキシル化反応触媒と無機質充填材とで構成されている歯科用軟質裏装材組成物(例えば、特許文献2参照。)が開示されている。   Conventional soft lining materials have an alkenyl group and an organopolysiloxane having a specific structure and a viscosity within a specific range, an organohydrogenpolysiloxane having a different structure, a silicone-soluble platinum compound, and a specific range. Denture base soft lining material composition comprising fine powder silica having a BET specific surface area hydrophobized on the surface and fused silica having a specific range of average particle diameter in a specific ratio (see, for example, Patent Document 1) .) And a polyorganosiloxane having at least one alkenyl group bonded to a silicon atom in one molecule, an organohydrogenpolysiloxane having two specific structures, a hydroxylation reaction catalyst, and an inorganic filler. A dental soft lining material composition (see, for example, Patent Document 2) is disclosed.

しかしこのような従来のシリコーンゴム系の軟質裏装材は、硬化体がゴム状であるため切削や研磨が非常に行い難いという欠点があった。軟質裏装材を作製する場合、口腔内あるいは口腔外でペースト状態の製品を義歯床面に盛り上げて硬化させた後、患者の口腔内の形状に従って軟質裏装材の辺縁部分を切削し形態修正を行うと共に、表面を滑らかにするために研磨を行う。しかし、シリコーンゴム系の軟質裏装材は切削や研磨が行い難いため特殊な研削材を用いる必要がある。しかし、それでも充分な形態修正ができないことから、患者の口腔内への適合が不十分となり軟質裏装材としての充分な効果を得られないという問題が生じている。また、このシリコーンゴム系の軟質裏装材は専用の接着材を用いて接着させる必要があるが、従来の軟質裏装材は義歯床との接着が不十分であったため義歯床辺縁部においては軟質裏装材が剥離してしまう問題も生じていた。   However, such a conventional silicone rubber-based soft lining material has a drawback that it is very difficult to cut and polish because the cured body is rubbery. When making a soft lining material, the product in a paste state in the oral cavity or outside the mouth is raised and hardened on the denture base, and then the edge of the soft lining material is cut according to the shape of the patient's oral cavity. Make corrections and polish to smooth the surface. However, since a silicone rubber-based soft lining material is difficult to cut or polish, it is necessary to use a special abrasive. However, since the shape cannot be sufficiently corrected, there is a problem that the fit into the patient's oral cavity is insufficient and a sufficient effect as a soft lining material cannot be obtained. In addition, this silicone rubber-based soft lining material needs to be bonded using a dedicated adhesive, but the conventional soft lining material was insufficiently bonded to the denture base, so in the denture base margin Had a problem that the soft lining material peeled off.

特開平08−292017号公報Japanese Patent Laid-Open No. 08-292017 特開平2002−060311号公報Japanese Patent Laid-Open No. 2002-060311

そこで本発明は、切削,研磨性が良く、義歯床に対する接着耐久性が良好である新規なシリコーンゴム系の歯科用軟質裏装材組成物の提供を課題とする。   Accordingly, an object of the present invention is to provide a novel silicone rubber-based dental soft lining material composition having good cutting and polishing properties and good adhesion durability to a denture base.

本発明者等は前記課題を解決するために鋭意検討した結果、1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン,1分子中に少なくとも3個のけい素原子に直結した水素原子を有するオルガノハイドロジェンポリシロキサン,シリコーン可溶性白金化合物及び無機充填材を含有させ前記課題が解決できることを見出して本発明を完成した。 As a result of intensive studies to solve the above-mentioned problems, the present inventors have a silicone resin having a three-dimensional network structure containing one SiO 2 unit in one molecule and at least two aliphatic unsaturated hydrocarbons, one molecule. The present invention has been completed by finding that the above problems can be solved by containing an organohydrogenpolysiloxane having a hydrogen atom directly bonded to at least three silicon atoms, a silicone-soluble platinum compound and an inorganic filler.

即ち本発明は、1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン100部,1分子中に少なくとも3個のけい素原子に直結した水素原子を有するオルガノハイドロジェンポリシロキサンを0.1〜50重量部,シリコーン可溶性白金化合物を前記2成分の合計量に対して1ppm〜2重量部,無機充填材を1〜500重量部含む歯科用軟質裏装材組成物である。 That is, the present invention relates to 100 parts of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons, and at least three silicon atoms in one molecule. 0.1-50 parts by weight of an organohydrogenpolysiloxane having a directly connected hydrogen atom, 1 ppm-2 parts by weight of a silicone-soluble platinum compound with respect to the total amount of the two components, and 1-500 parts by weight of an inorganic filler It is a soft dental lining material composition.

本発明に係る歯科用軟質裏装材組成物は、切削,研磨性が従来の軟質裏装材より優れ、接着耐久性も良好である歯科用軟質裏装材組成物である。   The dental soft lining material composition according to the present invention is a dental soft lining material composition that is superior in cutting and polishing properties to conventional soft lining materials and has good adhesion durability.

本発明に係る歯科用軟質裏装材組成物に用いる1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジンは、一般的に歯科用印象材,軟質裏装材に用いられる脂肪族不飽和炭化水素を少なくとも2個を有するオルガノポリシロキサンとは異なる構造を有し、分子中にSiO単位を含む。このため、この分子は3次元網目構造を有し本発明の基本的な特性である切削,研磨性及び接着耐久性の向上に有効に作用する。本発明に用いられる1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジンの代表的なものの構造を分子中の平均単位で示すとSiO単位とRSiO1/2単位(R一価単価水素基)を有するものがあるが、SiO単位のみでも良い。この分子中には、メチル基,エチル基等のアルキル基や、フェニル基を含んでも良いが中でもメチル基を含んだものが最適に使用される。また、本発明で用いられる1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジンは脂肪族不飽和炭化水素を少なくとも2個を有するが、この脂肪族不飽和炭化水素としては、ビニル基,プロペニル基,イソプロペニル基等が挙げられる。このうちビニル基を好適に使用することができる。1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジンは、液状から固体状まで幅広く使用することができ、5000mPa・s以上であることが望ましい。 A silicone resin having a three-dimensional network structure having SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons used in the dental soft lining material composition according to the present invention is generally It has a structure different from organopolysiloxane having at least two aliphatic unsaturated hydrocarbons used for impression materials and soft lining materials, and contains SiO 2 units in the molecule. For this reason, this molecule has a three-dimensional network structure and effectively acts on the basic characteristics of the present invention such as cutting, polishing, and adhesion durability. When the structure of a typical silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons is used as an average unit in the molecule, Some have SiO 2 units and R 1 SiO 1/2 units (R 1 monovalent monovalent hydrogen groups), but only SiO 2 units may be used. This molecule may contain an alkyl group such as a methyl group or an ethyl group, or a phenyl group. Among them, those containing a methyl group are optimally used. Further, the silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons used in the present invention has at least two aliphatic unsaturated hydrocarbons. However, examples of the aliphatic unsaturated hydrocarbon include a vinyl group, a propenyl group, and an isopropenyl group. Of these, vinyl groups can be preferably used. A silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons can be used widely from a liquid state to a solid state and is 5000 mPa · s or more. It is desirable.

1分子中にけい素原子に直結した水素原子を少なくとも3個有するオルガノハイドロジェンポリシロキサンは、その分子中にけい素原子に直結した水素原子を少なくとも3個有する必要があり架橋剤として作用する。このオルガノハイドロジェンポリシロキサンは、1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン100重量部に対して0.1〜50重量部で使用される。配合量が0.1重量部より少ないと硬化体の硬度が低下するばかりでなく硬化速度も緩慢となり、50重量部より多いと硬化体中に水素ガスによる気泡が発生しやすく正確な適合性の確認ができない。最適に使用できる範囲としては、使用時の歯科用軟質裏装材組成物全体に対して1〜30重量である。 An organohydrogenpolysiloxane having at least three hydrogen atoms directly bonded to silicon atoms in one molecule needs to have at least three hydrogen atoms directly bonded to silicon atoms in the molecule and acts as a crosslinking agent. This organohydrogenpolysiloxane is used in an amount of 0.1 to 50 weights per 100 parts by weight of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons. Used in the department. If the blending amount is less than 0.1 parts by weight, not only the hardness of the cured body is lowered but also the curing rate is slowed. I can't confirm. As a range which can be used optimally, it is 1-30 weight with respect to the whole dental soft lining material composition at the time of use.

シリコーン可溶性白金化合物は、公知の付加反応触媒である塩化白金酸,アルコール変性塩化白金酸,塩化白金酸とオレフィンとの錯体等が挙げられる。特に好適には塩化白金酸のビニルシロキサン錯体が用いられる。これ等の添加量は、前記2成分の使用時の合計量に対して1ppm〜2重量部の範囲である。1ppmより少ないと硬化速度が遅く、またこの白金化合物の触媒能を阻害する物質が微量存在した場合に硬化が遅くなるなどの難点がある。2重量部より多い場合には硬化速度が速すぎると共に経済的な不利を生じる。この塩化白金酸のシリコーン可溶性白金化合物は、アルコール系,ケトン系,エーテル系,炭化水素系の溶剤やポリシロキサンオイル等に溶解して使用することが好ましい。   Examples of the silicone-soluble platinum compound include chloroplatinic acid, alcohol-modified chloroplatinic acid, a complex of chloroplatinic acid and olefin, which are known addition reaction catalysts. A vinyl siloxane complex of chloroplatinic acid is particularly preferably used. These addition amounts are in the range of 1 ppm to 2 parts by weight with respect to the total amount when the two components are used. If it is less than 1 ppm, the curing rate is slow, and there is a problem that curing is slow when a trace amount of a substance that inhibits the catalytic ability of the platinum compound is present. When the amount is more than 2 parts by weight, the curing speed is too high and an economic disadvantage occurs. This silicone-soluble platinum compound of chloroplatinic acid is preferably used by dissolving it in an alcohol, ketone, ether or hydrocarbon solvent, polysiloxane oil or the like.

無機充填材は、1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジンと共に用いれば、組成物の切削,研磨性を向上させ硬化体の脆さを改善する。この無機充填材としては、石英,クリストバライト,珪藻土,熔融石英,ガラス繊維,二酸化チタン,ヒュームドシリカ等が例示される。このうち熔融石英、ヒュームドシリカが最適に使用されるが、ヒュームドシリカを用いる場合、表面処理により疎水化したものを用いても良い。この無機充填材は、1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン100重量部に対して1〜500重量部配合され、1重量部より少ないと、硬化体の切削,研磨性が充分ではなく、500重量部より多いと組成物の粘度が高くなすぎ操作が困難になってしまう。 When used with a silicone resin having a three-dimensional network structure that contains SiO 2 units in one molecule and at least two aliphatic unsaturated hydrocarbons, the inorganic filler improves the cutting and polishing properties of the composition and cures. Improves body fragility. Examples of the inorganic filler include quartz, cristobalite, diatomaceous earth, fused quartz, glass fiber, titanium dioxide, and fumed silica. Of these, fused silica and fumed silica are optimally used, but when fumed silica is used, it may be hydrophobized by surface treatment. This inorganic filler is blended in an amount of 1 to 500 parts by weight per 100 parts by weight of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons. When the amount is less than 1 part by weight, the cured product is not sufficiently cut and polished. When the amount is more than 500 parts by weight, the viscosity of the composition becomes too high and the operation becomes difficult.

本発明に係る歯科用軟質裏装材組成物には、その特性を失わない範囲で通常の付加反応に用いる脂肪族不付加基を有するオルガノポリシロキサン,非反応性のシリコーンオイル,有機及び/または無機着色剤や公知の抗菌材を含有しても良い。   The dental soft lining material composition according to the present invention includes an organopolysiloxane having an aliphatic non-addition group, a non-reactive silicone oil, an organic and / or a non-reactive group which is used for a normal addition reaction within a range not losing its characteristics. An inorganic colorant or a known antibacterial material may be contained.

本発明について実施例を挙げ詳細に説明するが、本発明はこれ等に限定されるものではない。   The present invention will be described in detail with reference to examples, but the present invention is not limited thereto.

<実施例1>
下記組成のベースペースト、キャタリストペーストを作製した。
(ベースペースト)
1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン 100g
(25℃における粘度:100000mP・s)
メチルハイドロジェンシロキサン単位を30モル%含有する直鎖状メチルハイドロジェンポリシロキサン 20g
熔融石英 30g
ヒュームドシリカ 3g
ベンガラ 0.2g

(キャタリストペースト)
1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン 100g
(25℃における粘度:100000mP・s)
1,3ジビニルテトラメチルジシロキサン−白金錯体0.8重量%含有シリコーンオイル溶液 1g
熔融石英 30g
ヒュームドシリカ 3g
<Example 1>
Base pastes and catalyst pastes having the following compositions were prepared.
(Base paste)
100 g of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons
(Viscosity at 25 ° C .: 100,000 mP · s)
20 g of linear methyl hydrogen polysiloxane containing 30 mol% of methyl hydrogen siloxane units
Fused quartz 30g
Fumed silica 3g
Bengala 0.2g

(Catalyst paste)
100 g of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons
(Viscosity at 25 ° C .: 100,000 mP · s)
1 g of silicone oil solution containing 0.8% by weight of 1,3-divinyltetramethyldisiloxane-platinum complex
Fused quartz 30g
Fumed silica 3g

<切削,研磨性の確認>
実施例1中のベースペースト及びキャタリストペーストを等量計量し、30秒練和後、直径20mm,高さ8mmの金属リングに注入し37℃温水中に10分間浸漬した。硬化後に型から取り外した。硬化体の周辺及び中心部を技工用カーバイトバー(ジーシー社製)を用い、切削,研磨性を官能的に評価した。
<Confirmation of cutting and polishing properties>
The base paste and catalyst paste in Example 1 were weighed in equal amounts, kneaded for 30 seconds, poured into a metal ring having a diameter of 20 mm and a height of 8 mm, and immersed in warm water at 37 ° C. for 10 minutes. Removed from mold after curing. The periphery and the center of the cured body were subjected to sensory evaluation of cutting and polishing using a technical carbide bar (manufactured by GC Corporation).

<接着耐久性の確認>
義歯床用レジン(製品名 ジーシーアクロン:ジーシー社製)にて60×60×2mmの平板を作製し、その1/3の部分にシリコーン系軟質裏装用プライマー(製品名 ジーシーリライン レジン用プライマー:ジーシー社製)を塗布し乾燥させた。実施例1中のベースペースト及びキャタリストペーストを等量計量し練和した後、上記アクロン版上全面に盛り、37℃温水中にて24時間放置及び28日間放置した。その後、幅10mmになるよう硬化体を切断し、プライマー塗布面と反対側の面から180度折り返し、万能試験機(商品名 オートグラフ:島津製作所製)にて引張試験を行った。24時間後及び28日後の試験結果を表1に示す。
<Confirmation of adhesion durability>
A 60 × 60 × 2mm flat plate is prepared with a denture base resin (product name GC Akron: GC Corporation), and a silicone soft lining primer (product name GC line liner resin primer: GC) Applied) and dried. After equal amounts of the base paste and catalyst paste in Example 1 were weighed and kneaded, they were put on the entire surface of the Akron plate and left in 37 ° C. warm water for 24 hours and 28 days. Thereafter, the cured body was cut so as to have a width of 10 mm, turned back 180 degrees from the surface opposite to the primer application surface, and subjected to a tensile test using a universal testing machine (trade name: Autograph, manufactured by Shimadzu Corporation). The test results after 24 hours and 28 days are shown in Table 1.

<実施例2>
下記組成のベースペースト、キャタリストペーストを作製した。
(ベースペースト)
1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン 100g
(25℃における粘度:100000mP・s)
メチルハイドロジェンシロキサン単位を30モル%含有する直鎖状メチルハイドロジェンポリシロキサン 2g
熔融石英 200g
ヒュームドシリカ 1g
ベンガラ 0.2g

(キャタリストペースト)
1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン 100g
(25℃における粘度:100000mP・s)
1,3ジビニルテトラメチルジシロキサン−白金錯体0.8重量%含有シリコーンオイル溶液 1g
熔融石英 200g
ヒュームドシリカ 1g

実施例1と同様の試験を行った。結果を表1に示す。
<Example 2>
Base pastes and catalyst pastes having the following compositions were prepared.
(Base paste)
100 g of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons
(Viscosity at 25 ° C .: 100,000 mP · s)
2 g of linear methylhydrogenpolysiloxane containing 30 mol% of methylhydrogensiloxane units
200g of fused silica
Fumed silica 1g
Bengala 0.2g

(Catalyst paste)
100 g of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons
(Viscosity at 25 ° C .: 100,000 mP · s)
1 g of silicone oil solution containing 0.8% by weight of 1,3-divinyltetramethyldisiloxane-platinum complex
200g of fused silica
Fumed silica 1g

The same test as in Example 1 was performed. The results are shown in Table 1.

<実施例3>
下記組成のベースペースト,キャタリストペーストを作製した。
(ベースペースト)
1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン 100g
(25℃における粘度:100000mP・s)
メチルハイドロジェンシロキサン単位を30モル%含有する直鎖状メチルハイドロジェンポリシロキサン 6g
熔融石英 30g
ヒュームドシリカ 3g
ベンガラ 0.2g

(キャタリストペースト)
1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン 100g
(25℃における粘度:100000mP・s)
1,3ジビニルテトラメチルジシロキサン−白金錯体0.8重量%含有シリコーンオイル溶液 1g
熔融石英 30g
ヒュームドシリカ 3g

実施例1と同様の試験を行った。結果を表1に示す。
<Example 3>
Base paste and catalyst paste having the following composition were prepared.
(Base paste)
100 g of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons
(Viscosity at 25 ° C .: 100,000 mP · s)
6 g of linear methylhydrogenpolysiloxane containing 30 mol% of methylhydrogensiloxane units
Fused quartz 30g
Fumed silica 3g
Bengala 0.2g

(Catalyst paste)
100 g of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons
(Viscosity at 25 ° C .: 100,000 mP · s)
1 g of silicone oil solution containing 0.8% by weight of 1,3-divinyltetramethyldisiloxane-platinum complex
Fused quartz 30g
Fumed silica 3g

The same test as in Example 1 was performed. The results are shown in Table 1.

<比較例1>
市販の従来のシリコーン系軟質裏装材(商品名 ジーシーリライン エクストラソフト:ジーシー社製)を用い実施例と同様の試験を行った。結果を表1に示す。
<Comparative Example 1>
A test similar to the example was performed using a commercially available conventional silicone soft lining material (trade name GC Reline Extra Soft: manufactured by GC Corporation). The results are shown in Table 1.

<比較例2>
実施例3中のシリコーンレジンを特許文献1で使用されているビニル基を有するジメチルポリシロキサンに置き換えたもの作製した。
(ベースペースト)
分子鎖両末端がメチルビニルシロキシ基で封鎖されたジメチルポリシロキサン
(25℃における粘度:20000mP・s) 100g
メチルハイドロジェンシロキサン単位を30モル%含有する直鎖状メチルハイドロジェンポリシロキサン 6g
熔融石英 30g
ヒュームドシリカ 3g
ベンガラ 0.2g

(キャタリストペースト)
分子鎖両末端がメチルビニルシロキシ基で封鎖されたジメチルポリシロキサン
(25℃における粘度:20000mP・s) 100g
1,3ジビニルテトラメチルジシロキサン−白金錯体0.8重量%含有シリコーンオイル溶液 1g
熔融石英 30g
ヒュームドシリカ 3g

実施例1と同様の試験を行った。結果を表1に示す。
<Comparative example 2>
A silicone resin in Example 3 was replaced with dimethylpolysiloxane having a vinyl group used in Patent Document 1.
(Base paste)
100 g of dimethylpolysiloxane having both ends of the molecular chain blocked with methylvinylsiloxy groups (viscosity at 25 ° C .: 20000 mP · s)
6 g of linear methylhydrogenpolysiloxane containing 30 mol% of methylhydrogensiloxane units
Fused quartz 30g
Fumed silica 3g
Bengala 0.2g

(Catalyst paste)
100 g of dimethylpolysiloxane having both ends of the molecular chain blocked with methylvinylsiloxy groups (viscosity at 25 ° C .: 20000 mP · s)
1 g of silicone oil solution containing 0.8% by weight of 1,3-divinyltetramethyldisiloxane-platinum complex
Fused quartz 30g
Fumed silica 3g

The same test as in Example 1 was performed. The results are shown in Table 1.

<表1>

Figure 2010229072
<Table 1>
Figure 2010229072

表1に示したように本発明の歯科用軟質裏装材組成物は、比較例に示した市販の従来のシリコーン系軟質裏装材と比較して技工用カーバイトバーで容易に切削,研磨することができる。また義歯床材料との接着及び接着耐久性も本発明中の1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジンを用いない比較例2と比べても接着性及び接着耐久性が28日後に低下することがない。これ等の点により、本発明に係る歯科用軟質裏装材組成物が、切削,研磨性が良好で接着耐久性においても優れており、本発明に係る歯科用軟質裏装材組成物が従来の問題点を大きく改善していることが確認できた。 As shown in Table 1, the dental soft lining material composition of the present invention is easily cut and polished with a technical carbide bar as compared with the commercially available conventional silicone soft lining material shown in the comparative example. can do. Further, the adhesion to the denture base material and the adhesion durability are also compared without using a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons in the present invention. Even compared with Example 2, the adhesion and adhesion durability do not decrease after 28 days. From these points, the dental soft lining material composition according to the present invention has good cutting and polishing properties and excellent adhesion durability, and the dental soft lining material composition according to the present invention has heretofore been known. It was confirmed that the problem of was greatly improved.

Claims (1)

1分子中にSiO単位を含み更に脂肪族不飽和炭化水素を少なくとも2個を有する3次元網目構造を持つシリコーンレジン100部,1分子中に少なくとも3個のけい素原子に直結した水素原子を有するオルガノハイドロジェンポリシロキサンを0.1〜50重量部,シリコーン可溶性白金化合物を前記2成分の合計量に対して1ppm〜2重量部,無機充填材を1〜500重量部含む歯科用軟質裏装材組成物。 100 parts of a silicone resin having a three-dimensional network structure containing SiO 2 units in one molecule and having at least two aliphatic unsaturated hydrocarbons, and hydrogen atoms directly bonded to at least three silicon atoms in one molecule Soft dental lining containing 0.1 to 50 parts by weight of organohydrogenpolysiloxane, 1 ppm to 2 parts by weight of silicone-soluble platinum compound based on the total amount of the two components, and 1 to 500 parts by weight of inorganic filler Material composition.
JP2009077953A 2009-03-27 2009-03-27 Soft lining material composition for dentistry Pending JP2010229072A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5653555B1 (en) * 2014-05-30 2015-01-14 株式会社松風 Two-component mixed ion sustained release mucosal preparation composition
JP5653554B1 (en) * 2014-05-30 2015-01-14 株式会社松風 Two-component mixed ion sustained release related denture base material composition
US11559471B2 (en) 2014-05-30 2023-01-24 Shofu Inc. Dental composition containing ion sustained-release glass

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001079020A (en) * 1999-09-14 2001-03-27 Tokuyama Corp Mucosa adjusting material composition for dental treatment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001079020A (en) * 1999-09-14 2001-03-27 Tokuyama Corp Mucosa adjusting material composition for dental treatment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5653555B1 (en) * 2014-05-30 2015-01-14 株式会社松風 Two-component mixed ion sustained release mucosal preparation composition
JP5653554B1 (en) * 2014-05-30 2015-01-14 株式会社松風 Two-component mixed ion sustained release related denture base material composition
US11559471B2 (en) 2014-05-30 2023-01-24 Shofu Inc. Dental composition containing ion sustained-release glass
US11648184B2 (en) 2014-05-30 2023-05-16 Shofu Inc. Dental composition containing ion sustained-release glass

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