| 摘要 |
PURPOSE: A dry type patch for whitening tooth surfaces containing peroxides and sodium acid pyrophosphate having excellent compatibility with hydrogen peroxide as a tooth whitening agent is provided. Therefore, this patch is convenient to use and excellent in stability of the peroxides in the patch over time and has excellent adhesion to a tooth. CONSTITUTION: This matrix type patch comprises an adhesive layer containing peroxides, peroxide stabilizers and sodium acid pyrophosphate as a tooth whitening agent and a hydrophilic glass polymer, together with a backing layer. The peroxides are one or more selected from hydrogen peroxide, carbamide peroxide, calcium peroxide, sodium percarbonate, sodium perborate and tetrasodium pyrophosphate peroxidate. The peroxide stabilizers are one or more selected from alkyl aryl sulfonate, alkyl sulfonate salt, alkyl carboxylate salt, alkyl diphenyl oxide disulfonate, Span 20(sorbitan monolaurate), Span 80(sorbitan monooleate), Span 85(sorbitan trioleate), Tween(sorbitan fatty acid ester) and a mixture thereof.
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