PROBLEM TO BE SOLVED: To provide a neutralization-facilitating ion sustained-release dental film which improves expression of acid buffer capacity and dentin acid resistance.SOLUTION: The invention provides a neutralization-facilitating ion sustained-release dental film comprising an ion sustained-release glass (a) and a film formation material (b) and having a thickness of 15-500 μm. The ion sustained-release glass (a) releases gradually fluoride ions, and further releases gradually one or more ions of from divalent to tetravalent ions. The ion sustained-release glass (a) releases gradually the fluoride ions, and further releases gradually one or more ions of strontium ions, aluminum ions, and boric acid ions.COPYRIGHT: (C)2016,JPO&INPIT【課題】酸緩衝能の発現、歯質の耐酸性の向上する中和促進イオン徐放性歯科用フィルムの提供。【解決手段】イオン徐放性ガラス(a)及びフィルム形成材(b)を含み、厚さが15μm~500μmの中和促進イオン徐放性歯科用フィルム。イオン徐放性ガラス(a)がフッ化物イオンを徐放し、更に2~4価のイオンのうち一種類以上のイオンを徐放する。イオン徐放性ガラス(a)がフッ化物イオンを徐放し、更にストロンチウムイオン、アルミニウムイオン及びホウ酸イオンの内から一種類以上のイオンを徐放する。【選択図】なし