JP2017154977A - 歯牙漂白用キット、及び歯牙漂白方法 - Google Patents
歯牙漂白用キット、及び歯牙漂白方法 Download PDFInfo
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- JP2017154977A JP2017154977A JP2016036815A JP2016036815A JP2017154977A JP 2017154977 A JP2017154977 A JP 2017154977A JP 2016036815 A JP2016036815 A JP 2016036815A JP 2016036815 A JP2016036815 A JP 2016036815A JP 2017154977 A JP2017154977 A JP 2017154977A
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- Prior art keywords
- tooth
- transition metal
- bleaching
- light
- titanium oxide
- 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.)
- Pending
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- 238000000034 method Methods 0.000 title claims description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 151
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 58
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000203 mixture Substances 0.000 claims abstract description 41
- 150000003624 transition metals Chemical class 0.000 claims abstract description 41
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 238000004061 bleaching Methods 0.000 claims description 120
- 230000002087 whitening effect Effects 0.000 abstract description 6
- 230000001747 exhibiting effect Effects 0.000 abstract description 2
- 239000004408 titanium dioxide Substances 0.000 description 44
- 230000000694 effects Effects 0.000 description 30
- 239000000463 material Substances 0.000 description 30
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- 239000000126 substance Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 229910052719 titanium Inorganic materials 0.000 description 8
- 229910052736 halogen Inorganic materials 0.000 description 7
- 150000002367 halogens Chemical class 0.000 description 7
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- 229910001428 transition metal ion Inorganic materials 0.000 description 5
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- 239000003574 free electron Substances 0.000 description 3
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- 229910000314 transition metal oxide Inorganic materials 0.000 description 3
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
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- TUQLLQQWSNWKCF-UHFFFAOYSA-N trimethoxymethylsilane Chemical compound COC([SiH3])(OC)OC TUQLLQQWSNWKCF-UHFFFAOYSA-N 0.000 description 1
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- BYGOPQKDHGXNCD-UHFFFAOYSA-N tripotassium;iron(3+);hexacyanide Chemical compound [K+].[K+].[K+].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] BYGOPQKDHGXNCD-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
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- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 description 1
Abstract
Description
<歯牙漂白用組成物>
(遷移金属を担持した酸化チタン)
本発明の歯牙漂白用組成物に用いられる遷移金属を担持した酸化チタン(以下遷移金属担持酸化チタンともいう)は、二酸化チタンに遷移金属が担持されたものである。
二酸化チタンとしては、例えばルチル型、アナターゼ型、ブルッカイト型二酸化チタンを上げることが出来る。本発明においては中でもルチル型、アナターゼ型二酸化チタンが好ましく、ルチル型酸化チタンがより好ましい。
水は、保存安定性、漂白性能に有害な不純物を実質的に含まない事が好ましく、例としては脱イオン水、蒸留水等が挙げられる。
本発明の歯牙漂白用組成物は、漂白補助剤として過酸化水素を含んでいても良い。過酸化水素は、光を吸収した遷移金属担持酸化チタンにより還元され、同様にヒドロキシラジカルを生じることから、より高い漂白効果が得られる。過酸化水素の配合量は、歯牙漂白用組成物100質量部に対して0.05〜40質量部が好ましい。0.05質量部より少ないと過酸化水素の添加効果が得られず、40質量部より多い場合、漂白効果は高くなるものの、歯肉等に付着した場合に炎症を起こす虞がある。より好ましくは0.1〜30質量部、更に好ましくは0.1〜15質量部、最も好ましくは1〜6質量部である。
本発明の歯牙漂白用組成物はその他公知の添加剤を配合しても良い。このような添加剤としては、増粘材、pH調製剤、安定剤等があげられる。
本発明の歯牙漂白用キットは、上述の歯牙漂白用組成物と特定の光照射器(以下、単に照射器ともいう)を組み合わせることで初めて完成する。この照射器は照射強度が700mW/cm2以上且つ440〜490nmに発光ピークを有する必要がある。このような照射器を用いることによって高い漂白効果が得られる詳しい理由は定かではないが、以下のように予想される。
(1)使用した材料
光触媒
Cu担持二酸化チタンA:蒸留水1000mlに50gのルチル型酸化チタン(TTO−55(N)(石原産業製)、BET比表面積42m2/g)を懸濁させて、酸化チタン100質量部に対して、銅イオンが0.22質量部となるように0.293gのCuCl2・2H2Oを添加して、攪拌しながら90℃で1時間熱処理を行った。熱処理後、得られたスラリーを濾過し、蒸留水で3回洗浄し、80℃で15時間乾燥することで粉体を得た。得られた粉体をフッ化水素酸で加熱溶解し、溶解液をICPにより定量することで、全ての銅イオンがルチル型酸化チタンの表面に担持されていることを確認し、この粉体をCu担持二酸化チタンAとした。
L.E.D.Radiometer(Kerr社製)を用いて測定した。各照射器の照射強度を表1に示す。
USB2000+(オーシャンプティクス社製)を用いて測定した。各照射器のピーク波長を表1に示す。
漂白前に比べて、漂白後の黄色味或いは赤味が明らかに薄くなっている、或いは消失しているものを○、変化の無いものを×とした。
新鮮牛歯の表面を、予め歯磨材(メルサージュ、松風社製)で清掃し、この牛歯4本を一群として、漂白前と漂白後の色調を、色差計(東京電色社製:TC−1800MKII)を用いて測定し、その差をΔE*で表した。尚ΔE*は下記式により計算される
ΔE*={(ΔL*)2+(Δa*)2+(Δb*)2}1/2
ΔL*=L1*−L2*
Δa*=a1*−a2*
Δb*=b1*−b2*
なお、L1*:漂白後の明度指数、a1*,b1*:漂白後の色質指数、L2*:漂白前の明度指数、a2*,b2*:漂白前の色質指数、ΔE*:色調変化量である。ΔE*が高い値であるほど、漂白効果が高いことを示す。
褐色スクリュー管ビン中、0.1gのCu担持二酸化チタンAと蒸留水9.9gを、暗所にてスターラーで10分攪拌し、漂白材を調製した。調製した漂白剤、及び照射器IIを用いて牛歯の漂白試験を行った。結果を表2に示す。
実施例1と同様に、表2に示す漂白材および照射器を用いて牛歯の漂白試験を行った。結果を表2に示す。
褐色スクリュー管ビン中、0.1gのCu担持二酸化チタンAと5%過酸化水素水9.9gを、暗所にてスターラーで10分攪拌し、漂白材を調製した。調製した漂白剤、及び照射器IIを用いて牛歯の漂白試験を行った。結果を表2に示す。
実施例6と同様に、表2に示す漂白材および照射器を用いて牛歯の漂白試験を行った。結果を表2に示す。
褐色スクリュー管ビン中、0.1gの二酸化チタンと5%過酸化水素水9.9gを、暗所にてスターラーで10分攪拌し、漂白材を調製した。調製した漂白剤、及び照射器IIを用いて牛歯の漂白試験を行った。結果を表3に示す。
比較例1と同様に、表3に示す漂白材および照射器を用いて牛歯の漂白試験を行った。結果を表3、表4に示す。
Claims (4)
- 遷移金属を担持した酸化チタンおよび水を含む歯牙漂白用組成物、及び照射強度が700mW/cm2以上且つ440〜490nmに発光ピークを有する光照射器を含む、歯牙漂白用キット。
- 遷移金属が銅、鉄、又は白金から選択される1又は2以上の遷移金属である請求項1記載の歯牙漂白用キット。
- 歯牙漂白用組成物に更に過酸化水素を含む請求項1又は2に記載の歯牙漂白用キット。
- 遷移金属を担持した酸化チタンおよび水を含む歯牙漂白用組成物を歯牙表面に塗布し、その後、照射強度が700mW/cm2以上且つ440〜490nmに発光ピークを有する光照射器で光照射する、歯牙漂白方法。
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