【発明の詳細な説明】[産業上の利用分野]本発明は歯牙硬組織の人工代替材料としての歯科用コン
ポジットレジン用組成物に関するものであり、さらに詳
しくは、硬質レジン人工歯、歯冠用硬質レジンおよび歯
冠修復用レジン充填材等、歯牙硬組織代替材料組成物に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dental composite resin composition as an artificial substitute material for tooth hard tissue, and more specifically, to a composition for use in hard resin artificial teeth and dental crowns. The present invention relates to tooth hard tissue substitute material compositions, such as hard resins and resin filling materials for dental crown restoration.
[従来の技術]従来よりかかる材料としては芳香族ジメタクリレート、
脂肪族ジメタクリレート、メチルメタクリレート等をマ
トリックスモノマーとし、シリカ等をフィラーとしたコ
ンポジットレジンが用いられているが、口腔内という湿
潤環境下では、レジンの機械的性質の劣化や歯質との接
着力の低下等長期耐久性は必ずしも満足いくものではな
い、さらに、近年、これらの硬化法として光重合法が確
立され、現在では光重合型の材料が主流となっている0
例えば、光重合型コンポジットレジン充填材は、う蝕に
より失われた歯牙欠損部に、レジンペーストを充填し、
充填面から光照射してレジンペースト中に分散する光重
合開始剤を活性化し重合させる方式である。従ってレジ
ンペーストの光透過性が低いと深部になるに従いレジン
の重合率は低下し、重合の不均一な修復物となってしま
う。[Prior art] Conventionally, such materials include aromatic dimethacrylate,
Composite resins with matrix monomers such as aliphatic dimethacrylate and methyl methacrylate and fillers such as silica are used, but in the humid environment of the oral cavity, the mechanical properties of the resin deteriorate and the adhesive strength with tooth structure deteriorates. In addition, in recent years, photopolymerization has been established as a curing method for these materials, and photopolymerizable materials are now the mainstream.
For example, photopolymerizable composite resin filling materials fill the missing tooth area due to caries with resin paste.
This method activates and polymerizes the photopolymerization initiator dispersed in the resin paste by irradiating light from the filling surface. Therefore, if the light transmittance of the resin paste is low, the polymerization rate of the resin decreases as the depth increases, resulting in a restoration with uneven polymerization.
その結果、修復物深部におけるレジンの物性、歯質に対
する接着力の低下、さらには未反応モノマーによる歯髄
刺激さえも懸念されるものである。As a result, there are concerns about the physical properties of the resin deep within the restoration, the deterioration of its adhesion to the tooth structure, and even the stimulation of the pulp by unreacted monomers.
コンポジットレジンの光透過性は種々の因子により影響
を受けるが、その主成分であるモノマーとフィラーの屈
折率の差が小さいほど光の散乱が軽減され透過率は高く
なる。フィラーとしては耐加水分解性に優れた無機質フ
ィラーであるシリカが一般的に使用されるが、その屈折
率は従来からよく使用されているモノマーである2、2
−ビス[4−(2゛ヒドロキシ−3°−メタクリロキシ
10ボキシ)フェニル]プロパン(米国特許第3179
623号)等の芳香族ジメタクリレートに比較して低い
、これら芳香族ジメタクレートは、強度、耐久性に優れ
るものの粘度がかなり高いこと、および屈折率がシリカ
に比べて著しく大きいため、低粘性で屈折率の低い脂肪
族ジメタクリレートを相当量配合しなければならない、
ところが、トリエチレングリコールメタクリレートに代
表される脂肪族ジメタクリレートは、屈折率はシリカに
近く、低粘性であるが、このモノマーを多量に配合した
レジンは吸水しやすく、耐水性、耐久性に乏しいという
欠点がある。このように従来のマトリックスモノマー系
では、フィラーに近い低屈折率を有し、かつ強度、耐久
性、特に耐水性に優れるという二つの所要性質を両立す
るものが、いまだ見い出されていないのが実状である。The light transmittance of a composite resin is affected by various factors, but the smaller the difference in refractive index between the monomer, which is the main component, and the filler, the less light scattering and the higher the transmittance. Silica, an inorganic filler with excellent hydrolysis resistance, is generally used as a filler, but its refractive index is that of monomers that have been commonly used2,2.
-bis[4-(2'hydroxy-3'-methacryloxy10boxy)phenyl]propane (U.S. Pat. No. 3179)
Although these aromatic dimethacrylates have excellent strength and durability, their viscosity is quite high, and their refractive index is significantly higher than that of silica. It is necessary to incorporate a considerable amount of aliphatic dimethacrylate with a low percentage,
However, although aliphatic dimethacrylates, such as triethylene glycol methacrylate, have a refractive index close to that of silica and low viscosity, resins containing large amounts of this monomer tend to absorb water and have poor water resistance and durability. There are drawbacks. In this way, the reality is that no conventional matrix monomer system has yet been found that has both the required properties of having a low refractive index close to that of fillers and having excellent strength, durability, and especially water resistance. It is.
[問題点を解決するための具体的手段]本発明者らは、
従来の問題点に鑑み鋭意検討の結果、含フツ素芳香族置
換基を有する化合物を用いた場合に特異的にこれら課題
を解決できることを見い出し本発明に到達したものであ
る。すなわち本発明は、次の各成分、tal−形成(式中、Rは水素原子またはメチル基を表わす、)で示
される含フツ素ビスフェノール基を骨格とするジアクリ
レートまたはジメタクリレート100重量部、山)脂肪族系モノあるいはジアクリレートまたは脂肪族
系モノあるいはジメタクリレート0〜300重量部、fc) talと山)の合計100重量部に対してフ
ィラー0〜500重量部、(d) (a)と山)の合計100重量部に対して光
重合開始剤0〜3重量部、からなり、(b)、(C1、(d+酸成分うち少なくと
も1種以上の成分を包含せしめたことを特徴とする光硬
化性歯科用コンポジットレジン用組成物である。[Specific means for solving the problem] The present inventors
As a result of intensive studies in view of the conventional problems, it was discovered that these problems can be specifically solved when a compound having a fluorine-containing aromatic substituent is used, and the present invention has been achieved. That is, the present invention provides the following components: 100 parts by weight of diacrylate or dimethacrylate having a backbone of a fluorine-containing bisphenol group represented by tal-formation (wherein R represents a hydrogen atom or a methyl group); ) 0 to 300 parts by weight of aliphatic mono- or diacrylate or aliphatic mono- or dimethacrylate, fc) 0 to 500 parts by weight of filler per 100 parts by weight in total of tal and methacrylate, (d) 0 to 500 parts by weight of (a) and 0 to 3 parts by weight of a photopolymerization initiator based on a total of 100 parts by weight of (b), (C1, (d+acid component)) This is a composition for photocurable dental composite resin.
本発明の含フツ素ビスフェノール基を骨格とするジアク
リレートまたはジメタクリレートを原料とする高分子化
合物(レジン)は屈折率が低く、撓水性が高く耐水性に
優れたものであるが、より屈折率を下げてフィラーとの
整合性を改善するため脂肪族系のモノあるいはジアクリ
レートまたは脂肪族系モノあるいはジメタクリレートを
混合して用いることもでき、具体的にはメチル(メタ)
アクリレート、エチル(メタ)アクリレート、トリフル
オロエチル(メタ)アクリレート、ヘキサフルオロプロ
ピル(メタ)アクリレート、エチレングリコールジ(メ
タ)アクリレート、ジまたはトリまたはテトラエチレン
グリコールジ(メタ)アクリレート、ネオベンチルグリ
コールジ(メタ)アクリレート、トリメチロールプロパ
ントリ(メタ)アクリレート、ジー2−(メタ)アクリ
ロキシエチル−2,2,4−トリメチルへキサメチレン
ジカーバメイト等のほか各種二重結合を有するモノマー
が挙げられる。これらの中では特にトリエチレングリコ
ールジメタクリレートがコンポジットとした場合の複合
効果に優れ、圧縮強さ、曲げ強さ、耐水性等の物性の極
めて良好な複合体が得られるものである。また、その量
は用いる七ツマ−の種類によるが含フツ素ビスフェノー
ル基を骨格とするジアクリレートまたはジメタクリレー
ト100重量部に対して300重量部までの範囲が好ま
しい、この範囲を越えると、含フツ素モノマーの特性を
十分に発揮させることができず、所期の目的を達成する
ことができないものである。The polymer compound (resin) of the present invention made from diacrylate or dimethacrylate with a fluorine-containing bisphenol group as a backbone has a low refractive index, high water repellency, and excellent water resistance. It is also possible to use a mixture of aliphatic mono- or diacrylates or aliphatic mono- or dimethacrylates to lower the
Acrylate, ethyl (meth)acrylate, trifluoroethyl (meth)acrylate, hexafluoropropyl (meth)acrylate, ethylene glycol di(meth)acrylate, di- or tri- or tetraethylene glycol di(meth)acrylate, neobentyl glycoldi Examples include (meth)acrylate, trimethylolpropane tri(meth)acrylate, di-2-(meth)acryloxyethyl-2,2,4-trimethylhexamethylene dicarbamate, and various other monomers having double bonds. Among these, triethylene glycol dimethacrylate is particularly excellent in composite effects when made into a composite, resulting in a composite with extremely good physical properties such as compressive strength, bending strength, and water resistance. Although the amount depends on the type of hexamer used, it is preferably up to 300 parts by weight per 100 parts by weight of diacrylate or dimethacrylate having a fluorine-containing bisphenol group as the skeleton. The properties of the basic monomer cannot be fully demonstrated, and the intended purpose cannot be achieved.
本発明においてはフィラーを用いることが好ましく、コ
ロイダルシリカ、石英粉末、シリカガラス等が最も一般
的に用いられ、用途により適宜選択される。その量はモ
ノマー100重量部に対して500重量部までの範囲が
好ましく、これ以上では賦形性、操作性が悪くなる。ま
た、フィラーを若干でも添加することにより硬さ、圧縮
強さ、曲げ強さ等の機械的物性は向上し、熱膨張係数や
重合収縮量が改善されるため特に下限はないが、−膜内
にはその添加効果が十分に発揮される30重量部以上で
使用される。また、X線造影性を付与する目的でストロ
ンチウム、バリウムまたは亜鉛ガラス粉末を配合するこ
ともでき、さらに、粘度、重合収縮量等の調節のためポ
リメチルメタクリレート、ポリエチルメタクリレートや
前記の各種ジメタクリレート硬化物を粉砕して調整した
いわゆる有機質フィラーを混合して用いることも勿論可
能である。In the present invention, it is preferable to use a filler, and colloidal silica, quartz powder, silica glass, etc. are most commonly used, and are appropriately selected depending on the purpose. The amount is preferably up to 500 parts by weight per 100 parts by weight of the monomer; if it exceeds this amount, shapeability and operability will deteriorate. In addition, by adding even a small amount of filler, mechanical properties such as hardness, compressive strength, and bending strength are improved, and the coefficient of thermal expansion and amount of polymerization shrinkage are improved, so there is no lower limit. It is used in an amount of 30 parts by weight or more so that the effect of its addition is fully exhibited. In addition, strontium, barium, or zinc glass powder can be added for the purpose of imparting X-ray contrast properties, and polymethyl methacrylate, polyethyl methacrylate, and the various dimethacrylates mentioned above can be added to adjust the viscosity, amount of polymerization shrinkage, etc. Of course, it is also possible to mix and use a so-called organic filler prepared by pulverizing the cured product.
本発明の組成物は光硬化させて使用するものであり、一
般に歯科用として使用される光硬化用光源である可視光
線により硬化させるためには光重合開始剤の使用がより
効率的である。ここでいう光重合開始剤とは、いわゆる
光重合開始剤のほかに増感剤と称されるものも含むもの
であり、具体的にはベンゾイルメチルエーテル、イソプ
ロポキシベンゾイン、p−ベンゾイルベンジルプロミド
、ベンゾインフェニルエーテル、ベンゾインイソブチル
エーテル、d、!−カンフアキノン、アニリル、α−ナ
フトイン、ベンゾイン、アセナフテンキノン等が挙げら
れる。これら光重合開始剤の量はモノマー100重量部
に対して1〜3重量部の範囲が一般的である。また、こ
れらに還元剤としてジメチルアミノエチルメタクリレー
ト、ジメチル−pトルイジン等のアミンを添加するとさ
らに硬化時間が短縮でき、好ましいものである。また、
さらに必要に応じ、ハイドロキノンモノメチルエーテル
、2.6−シーtert−ブチル−p−クレゾール等の
重合禁止剤、あるいは酸化防止剤、紫外線吸収剤、着色
剤等を用いることができる0本発明組成物は公知の歯質
接着性モノマーを混合することで、耐水、耐久性に優れ
る歯質接着剤として使用することもできる。The composition of the present invention is used after being photocured, and it is more efficient to use a photopolymerization initiator in order to cure it using visible light, which is a light source for photocuring generally used in dentistry. The photopolymerization initiator mentioned here includes not only the so-called photopolymerization initiator but also what is called a sensitizer, and specifically includes benzoyl methyl ether, isopropoxybenzoin, p-benzoylbenzyl bromide. , benzoin phenyl ether, benzoin isobutyl ether, d,! - Camphorquinone, anilyl, α-naphthoin, benzoin, acenaphthenequinone and the like. The amount of these photopolymerization initiators is generally in the range of 1 to 3 parts by weight per 100 parts by weight of the monomer. Further, it is preferable to add an amine such as dimethylaminoethyl methacrylate or dimethyl-p-toluidine to these as a reducing agent because the curing time can be further shortened. Also,
Furthermore, if necessary, polymerization inhibitors such as hydroquinone monomethyl ether and 2,6-tert-butyl-p-cresol, antioxidants, ultraviolet absorbers, colorants, etc. can be used in the composition of the present invention. By mixing with a known dentin adhesive monomer, it can be used as a dentin adhesive with excellent water resistance and durability.
以下、実施例により本発明を具体的に説明する9参考例
1特願昭63−60288号に示した方法により2,2〜
ビス(4−メタクリロキシエトキシフェニル)へキサフ
ルオロプロパン[B L s−MEPHFPと略す]を
得た。また同様にして2,2−ビス(4−ヒドロキシエ
トキシフェニル)ヘキサフルオロプロパン33g、アク
リル酸20g、p−)ルエンスルホン酸2g、ピクリン
酸0.2gおよびトルエン200 w、 1を加え、2
4時間還流させた。その間、連続抽出器を使用して発生
する水を反応系外へ排出した。冷却後、2N水酸化ナト
リウム150 m lを加え、中和、洗浄後蒸留水で十
分洗浄し、無水硫酸ナトリウムで乾燥した。トルエンを
減圧蒸留で留去し、淡黄色透明な油状物として目的物2
5gを得た。Hereinafter, the present invention will be specifically explained with reference to Examples. 9 Reference Example 1 2,2~
Bis(4-methacryloxyethoxyphenyl)hexafluoropropane [abbreviated as BL s-MEPHFP] was obtained. Similarly, 33 g of 2,2-bis(4-hydroxyethoxyphenyl)hexafluoropropane, 20 g of acrylic acid, 2 g of p-)luenesulfonic acid, 0.2 g of picric acid and 200 w of toluene were added, and 2
It was refluxed for 4 hours. During that time, water generated was discharged from the reaction system using a continuous extractor. After cooling, 150 ml of 2N sodium hydroxide was added, neutralized, washed, thoroughly washed with distilled water, and dried over anhydrous sodium sulfate. Toluene was distilled off under reduced pressure to obtain the desired product 2 as a pale yellow transparent oil.
5g was obtained.
生成物は赤外線吸収スペクトルおよびプロトン核磁気共
鳴スペクトルにより2,2−ビス(4−アクリロキシエ
トキシフェニル)へキサフルオロプロパン[B i 5
−AEPHFPと略すコである。ことを確認した。以下
にその分析結果を示す。The product was determined by infrared absorption spectrum and proton nuclear magnetic resonance spectrum to be 2,2-bis(4-acryloxyethoxyphenyl)hexafluoropropane [B i 5
-It is abbreviated as AEPHFP. It was confirmed. The analysis results are shown below.
赤外線吸収スペクトル(液膜法)〜13060cm (芳香族v C−H)1730cl−
’ (jCスf ル結合(7) v C= O)164
5cm (末端ビニル基のνc=0)1615.15
15cm−’ (芳香族vc=c)1415cm−’
(末端ビニル基のδC−)1 (面内))’H−NMR
(溶媒: d6−Acetone、内部標準物質二TM
S)δ = 4.33〜4.40pp層 (−〇−C
12−CI+ニーロー のメチレン7°ロトトン4H)δ 〜4.49〜4.61ppm (−0−CHよ−
Cl2−0− のメチレン70ロトトン411)δ=5・94ppm (末端ビニル基のプロトン2H
)δ =6.26 ρpm ()l
)δ =6.38pp諺 (11)δ= 7.10ppm (芳香族プロトン411)δ
=7.41ppm (’ u )19
F−NMR(溶媒; d5−Acetone、内部標準
物質:CFCI、)1; =−63−579p pv*
(CPi 昔−CF9基)61)実施例1〜10、
比較例1〜4参考例1で得たB i 5−AEPHFPおよびBis
−MEPHFPを用い第1表に示す組成の混合物を得、
内径4mm、深さ8mmのステンレス窩洞に噴入し、K
ulzer社(西独)製の可視光線照射器Transl
ux CLを用い光を20秒間照射した。そののち硬化
体を取り出し硬化した部分の長さをマイクロメータで測
定し、硬化深さとし、その結果を第1表に示した。また
、各種組成の混合物をKUIzer社(西独)製可視光
線照射器Dentacolor XSにより硬化させ、
直径20mm、厚さ0.5mmの試料を調製し、耐水性
を評価するため37℃水中に30日間浸漬し、その吸水
量と溶解量を測定した。浸漬前後の重量変化から吸水量
を、また、吸水試験をおこなった試料を乾燥し、重量変
化から溶解量を求めた。さらに硬化体の機械的性質とし
て、ブリネル硬さ、圧縮強さ、曲げ強さおよび歯ブラシ
摩耗量の測定をおこなった。硬化は前記の可視光線照射
器を用い、試料の寸法により照射時間、回数を調整した
。また、硬化体の水中での劣化を評価するため硬化後3
日後の試料と37℃の水中に30日間浸漬した試料の両
方を比較した。Infrared absorption spectrum (liquid film method) ~1 3060cm (aromatic v C-H) 1730cl-
' (jCsru combination (7) v C= O)164
5cm (vc of terminal vinyl group = 0) 1615.15
15 cm-' (aromatic vc=c) 1415 cm-'
(δC- of the terminal vinyl group)1 (in-plane)'H-NMR
(Solvent: d6-acetone, internal standard substance 2TM
S) δ = 4.33~4.40pp layer (-〇-C
12-CI+Nylow's methylene 7°rototon 4H) δ ~4.49~4.61ppm (-0-CH-
Cl2-0- methylene 70 rototons 411) δ=5・94ppm (proton 2H of terminal vinyl group
)δ =6.26 ρpm ()l
) δ = 6.38pp Proverb (11) δ = 7.10ppm (aromatic proton 411) δ
=7.41ppm ('u)19
F-NMR (solvent; d5-acetone, internal standard substance: CFCI) 1; =-63-579p pv*
(CPi old-CF9 group) 61) Examples 1 to 10,
Comparative Examples 1 to 4 B i 5-AEPHFP and Bis obtained in Reference Example 1
- Obtaining a mixture having the composition shown in Table 1 using MEPHFP,
Injected into a stainless steel cavity with an inner diameter of 4 mm and a depth of 8 mm,
Visible light irradiator Transl manufactured by Ulzer (West Germany)
Light was irradiated for 20 seconds using ux CL. Thereafter, the cured product was taken out and the length of the cured portion was measured using a micrometer, which was defined as the cure depth. The results are shown in Table 1. In addition, mixtures of various compositions were cured using a visible light irradiator Dentacolor XS manufactured by KUIzer (West Germany),
A sample with a diameter of 20 mm and a thickness of 0.5 mm was prepared, and in order to evaluate water resistance, it was immersed in water at 37° C. for 30 days, and its water absorption and dissolution amount were measured. The amount of water absorbed was determined from the change in weight before and after immersion, and the amount dissolved was determined from the change in weight after drying the sample subjected to the water absorption test. Furthermore, as mechanical properties of the cured product, Brinell hardness, compressive strength, bending strength, and toothbrush wear amount were measured. For curing, the visible light irradiator described above was used, and the irradiation time and number of times were adjusted depending on the size of the sample. In addition, in order to evaluate the deterioration of the cured product in water,
Both samples after 1 day and samples soaked in water at 37°C for 30 days were compared.
前者を乾燥試料、後者を吸水試料と呼ぶ、なお、歯ブラ
シ摩耗試験は吸水試料を使用し、摩耗量は同時に試験し
た市販のアクリル板(ポリメチルメタクリレート、以下
PMMAと略記する)の摩耗量に対する比で求めた。こ
の結果を第1表に示した。また、比較のためフッ素を含
有しない芳香族ジ(メタ)アクリレートについても同様
にして各種物性を測定した。この結果も第1表に示した
。The former is called a dry sample, and the latter is called a water absorption sample.The toothbrush wear test uses a water absorption sample, and the amount of wear is a ratio to the amount of wear of a commercially available acrylic plate (polymethyl methacrylate, hereinafter abbreviated as PMMA) that was tested at the same time. I asked for it. The results are shown in Table 1. For comparison, various physical properties of aromatic di(meth)acrylate containing no fluorine were also measured in the same manner. The results are also shown in Table 1.
[発明の効果]本発明の組成物は含フツ素ビスフェノール基を骨格とす
るジアクリレートおよびジメタクリレートを用いるもの
であり、屈折率が低く、シリカ等のフィラーの屈折率に
近いため透光性に優れ、充填深部まで効率よく光硬化す
るものであり、得られる硬化体は耐水性、機械的物性も
潰れているため歯科用材料として極めて有用である。[Effects of the Invention] The composition of the present invention uses diacrylate and dimethacrylate having a fluorine-containing bisphenol group as a skeleton, and has a low refractive index close to that of fillers such as silica, so it has good translucency. It is excellent and can be efficiently photocured to the deep part of the filling, and the resulting cured product has excellent water resistance and mechanical properties, making it extremely useful as a dental material.
特許出願人 セントラル硝子株式会社Patent applicant: Central Glass Co., Ltd.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63190023AJPH0240310A (en) | 1988-07-29 | 1988-07-29 | Composition for photo-setting dental composite resin |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63190023AJPH0240310A (en) | 1988-07-29 | 1988-07-29 | Composition for photo-setting dental composite resin |
| Publication Number | Publication Date |
|---|---|
| JPH0240310Atrue JPH0240310A (en) | 1990-02-09 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63190023APendingJPH0240310A (en) | 1988-07-29 | 1988-07-29 | Composition for photo-setting dental composite resin |
| Country | Link |
|---|---|
| JP (1) | JPH0240310A (en) |
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