JP6887398B2 - 歯科用組成物及び歯科用補綴物接着用キット - Google Patents
歯科用組成物及び歯科用補綴物接着用キット Download PDFInfo
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- JP6887398B2 JP6887398B2 JP2018065672A JP2018065672A JP6887398B2 JP 6887398 B2 JP6887398 B2 JP 6887398B2 JP 2018065672 A JP2018065672 A JP 2018065672A JP 2018065672 A JP2018065672 A JP 2018065672A JP 6887398 B2 JP6887398 B2 JP 6887398B2
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- SLUHLANJIVXTRQ-UHFFFAOYSA-N pyridin-2-ylthiourea Chemical compound NC(=S)NC1=CC=CC=N1 SLUHLANJIVXTRQ-UHFFFAOYSA-N 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- PPASLZSBLFJQEF-RKJRWTFHSA-M sodium ascorbate Substances [Na+].OC[C@@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RKJRWTFHSA-M 0.000 description 1
- 235000010378 sodium ascorbate Nutrition 0.000 description 1
- 229960005055 sodium ascorbate Drugs 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- PPASLZSBLFJQEF-RXSVEWSESA-M sodium-L-ascorbate Chemical compound [Na+].OC[C@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RXSVEWSESA-M 0.000 description 1
- KFZUDNZQQCWGKF-UHFFFAOYSA-M sodium;4-methylbenzenesulfinate Chemical compound [Na+].CC1=CC=C(S([O-])=O)C=C1 KFZUDNZQQCWGKF-UHFFFAOYSA-M 0.000 description 1
- CHLCPTJLUJHDBO-UHFFFAOYSA-M sodium;benzenesulfinate Chemical compound [Na+].[O-]S(=O)C1=CC=CC=C1 CHLCPTJLUJHDBO-UHFFFAOYSA-M 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 125000005287 vanadyl group Chemical group 0.000 description 1
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- Dental Preparations (AREA)
Description
本実施形態の歯科用組成物は、1剤型である。また、本実施形態の歯科用組成物は、(メタ)アクリレート化合物、光重合開始剤、バナジウム化合物、チオ尿素類及びキレート剤を含む。さらに、本実施形態の歯科用組成物は、プライマー又はボンディング材である。
本願明細書及び特許請求の範囲において、(メタ)アクリレート化合物とは、アクリレート又はメタクリレートの各種モノマー、オリゴマーあるいはプレポリマーを意味し、(メタ)アクリロイルオキシ基を1個以上有する。また、(メタ)アクリロイルオキシ基とは、メタクリロイルオキシ基及び/又はアクリロイルオキシ基を意味する。
光重合開始剤としては、特に限定されないが、カンファーキノン、フェニルビス(2,4,6−トリメチルベンゾイル)ホスフィンオキシド、2,4,6−トリメチルベンゾイルージフェニルフォスフィン、ベンジルケタール、ジアセチルケタール、ベンジルジメチルケタール、ベンジルジエチルケタール、ベンジルビス(2−メトキシエチル)ケタール、4,4'−ジメチル(ベンジルジメチルケタール)、アントラキノン、1−クロロアントラキノン、2−クロロアントラキノン、1,2−ベンズアントラキノン、1−ヒドロキシアントラキノン、1−メチルアントラキノン、2−エチルアントラキノン、1−ブロモアントラキノン、チオキサントン、2−イソプロピルチオキサントン、2−ニトロチオキサントン、2−メチルチオキサントン、2,4−ジメチルチオキサントン、2,4−ジエチルチオキサントン、2,4−ジイソプロピルチオキサントン、2−クロロ−7−トリフルオロメチルチオキサントン、チオキサントン−10,10−ジオキシド、チオキサントン−10−オキシド、ベンゾインメチルエーテル、ベンゾインエチルエーテル、ベンゾインイソプロピルエーテル、ベンゾインイソブチルエーテル、ベンゾフェノン、ビス(4−ジメチルアミノフェニル)ケトン、4,4'−ビス(ジエチルアミノ)ベンゾフェノン、アジド基を含む化合物、アジド基を含む化合物等が挙げられ、二種以上併用してもよい。
バナジウム化合物は、化学重合開始剤の還元剤又は光重合促進剤として機能する。
チオ尿素類としては、特に限定されないが、チオ尿素、エチレンチオ尿素、N−メチルチオ尿素、N−エチルチオ尿素、N−プロピルチオ尿素、N−ブチルチオ尿素、N−ラウリルチオ尿素、N−フェニルチオ尿素、N−シクロヘキシルチオ尿素、N,N−ジメチルチオ尿素、N,N−ジエチルチオ尿素、N,N−ジプロピルチオ尿素、N,N−ジブチルチオ尿素、N,N−ジラウリルチオ尿素、N,N−ジフェニルチオ尿素、N,N−ジシクロヘキシルチオ尿素、トリメチルチオ尿素、テトラメチルチオ尿素、N−アセチルチオ尿素、N−ベンゾイルチオ尿素、1−アリル−3−(2−ヒドロキシエチル)−2−チオ尿素、1−(2−テトラヒドロフルフリル)−2−チオ尿素、N−tert−ブチル−N'−イソプロピルチオ尿素、2−ピリジルチオ尿素等が挙げられ、二種以上併用してもよい。中でも、N−ベンゾイルチオ尿素が特に好ましい。
キレート剤としては、特に限定されないが、エチレンジアミン四酢酸、エチレンジアミン四酢酸二ナトリウム、エチレンジアミン四酢酸三ナトリウム、エチレンジアミン四酢酸四ナトリウム等のエデト酸塩、trans−1,2−シクロヘキサンジアミン四酢酸、ヒドロキシエチルエチレンジアミン三酢酸塩、ジエチレントリアミン五酢酸塩、エチレンジアミンテトラメチレンホスホン酸、ニトリロトリスメチレンホスホン酸等のホスホン酸塩、フィチン酸、シュウ酸、ポリアスパラギン酸、ポリグルタミン酸、ポリリン酸、メタリン酸、ピロリン酸、ヘキサメタリン酸、リン酸、クエン酸、乳酸、アラニン、タンニン、ジヒドロキシエチルグリシン、グルコン酸、サリチル酸、コハク酸、リンゴ酸、酒石酸、及びこれらの塩等が挙げられ、二種以上併用してもよい。中でも、エチレンジアミン四酢酸二ナトリウム、エチレンジアミン四酢酸四ナトリウム、ジエチレントリアミン五酢酸、エチレンジアミンテトラメチレンホスホン酸、ニトリロトリスメチレンホスホン酸、クエン酸が特に好ましい。
本実施形態の歯科用組成物は、第3級アミンをさらに含むことが好ましい。これにより、歯質に対する接着性を向上させることができる。
本実施形態の歯科用組成物は、水、水溶性有機溶媒、フィラー、重合禁止剤、化学重合開始剤の還元剤等をさらに含んでいてもよい。
本実施形態の歯科用組成物が水を含むと、酸基を有する(メタ)アクリレートの酸基が解離し、その結果、歯面のスメアー層の溶解性、歯質脱灰性及び歯質への浸透性が向上する。このため、リン酸エッチング液等により、歯面を前処理しなくても、歯科用組成物を使用することができる。また、予めリン酸エッチング液等により、歯面を前処理すると、歯質への浸透性が向上し、接着性が向上する。
水溶性有機溶媒としては、揮発性を有していれば、特に限定されないが、アセトン、メタノール、エタノール、イソプロピルアルコール、メチルエチルケトン等が挙げられ、二種以上併用してもよい。中でも、アセトンが特に好ましい。
フィラーは、有機フィラー及び無機フィラーのいずれであってもよいが、無機フィラーであることが好ましい。
重合禁止剤としては、特に限定されないが、ジブチルヒドロキシトルエン、2,6−t−ブチル−2,4−キシレノール、2,6−ジ−tert−ブチル−p−クレゾール等が挙げられ、二種以上併用してもよい。中でも、2,6−ジ−tert−ブチル−p−クレゾールが特に好ましい。
化学重合開始剤の還元剤としては、バナジウム化合物及びチオ尿素類以外であれば、特に限定されないが、スルフィン酸類、システイン類、アスコルビン酸類等が挙げられ、二種以上併用してもよい。
本実施形態の歯科用組成物をプライマーとして用いる場合、レジンセメント(例えば、特許文献1参照)と組み合わせて使用することにより、歯科用補綴物を歯面に接着させることができる。
表1に示す配合[質量部]で、酸基を有さないメタクリレート、酸基を有するメタクリレート、水溶性有機溶媒、水、光重合開始剤、第3級アミン、重合禁止剤、フィラー、バナジウム化合物、チオ尿素類、キレート剤を混合することにより、歯科用組成物を作製した。
次に、歯科用組成物のプライマー及びボンディング材として用いた場合の接着性と、保存安定性を評価した。
直径10mmのステンレス鋼製のロッドを耐水研磨紙#120で研磨した後、サンドブラスト処理し、引張試験用治具とした。
不合格:引張強さの平均値が8MPa未満である場合
(2)ボンディング材として用いた場合の接着性
牛歯の象牙質(デンチン)を耐水研磨紙#320で研磨し、平坦にした研磨面を被接着面とした。
不合格:せん断強さの平均値が10MPa未満である場合
(3)保存安定性
高密度ポリエチレン製の容器に歯科用組成物を入れて密封し、60℃の環境下で2週間放置した後、歯科用組成物を1滴滴下したときの外観を目視により確認し、歯科用組成物の保存安定性を評価した。なお、保存安定性の判定基準は、以下の通りである。
良:歯科用組成物の粘度が高くなるが、塗布することが可能である場合
不可:歯科用組成物の粘度が高くなり、塗布することが不可能である場合
表1に、歯科用組成物のプライマー及びボンディング材として用いた場合の接着性と、保存安定性の評価結果を示す。
Claims (2)
- 1剤型の歯科用組成物であって、
酸基を有する(メタ)アクリレート化合物、光重合開始剤、バナジウム化合物、チオ尿素類及びキレート剤を含み、
プライマー又はボンディング材である歯科用組成物。 - 歯科用補綴物の接着に用いられるキットであって、
酸基を有する(メタ)アクリレート化合物、光重合開始剤、バナジウム化合物、チオ尿素類及びキレート剤を含むプライマーと、
化学重合開始剤の酸化剤を含むレジンセメントを有することを特徴とする歯科用補綴物接着用キット。
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