Dental cement
The present invention provides a dental cement that excels in ease of handling without its powder-to-liquid ratio greatly affecting ease of handling such as kneadability or ease of filling as compared to traditional dental portland cements, and that can provide a hardened material having excellent compressive strength. The present invention relates to a dental cement comprising a powder component and a liquid component, wherein: the powder component comprises a portland cement powder (A), the liquid component comprises water (C), and at least one of the powder component and the liquid component comprises a cationic surfactant (B). Preferably, the liquid component comprises the cationic surfactant (B).
1 . A dental cement comprising a powder component and a liquid component, wherein:
the powder component comprises a portland cement powder (A),
the liquid component comprises water (C), wherein a content of water (C) in the liquid component is 75 mass % or more,
at least one of the powder component and the liquid component comprises a cationic surfactant (B), and
the dental cement does not contain a polymer in a hardened material after setting.
2 . The dental cement according to claim 1 , wherein the liquid component comprises the cationic surfactant (B).
3 . The dental cement according to claim 2 , wherein a proportion of the cationic surfactant (B) in the liquid component is 0.05 to 25 mass %.
4 . The dental cement according to claim 1 , wherein the powder component comprises the cationic surfactant (B).
5 . The dental cement according to claim 4 , wherein a proportion of the cationic surfactant (B) in the powder component is 0.1 to 5 mass %.
6 . The dental cement according to claim 1 , wherein the cationic surfactant (B) is a cationic surfactant represented by formula (I),
wherein R is a hydrogen atom or a (meth)acryloyloxy group, n is an integer of 10 to 20, and X is a chlorine atom or a bromine atom.
7 . The dental cement according to claim 1 , wherein the portland cement powder (A) comprises at least one inorganic component selected from the group consisting of calcium oxide, silicon dioxide, and calcium sulfate.
8 . The dental cement according to claim 1 , wherein the cationic surfactant (B) is one or more selected from the group consisting of cetylpyridinium chloride, 12-methacryloyloxydodecylpyridinium bromide, hexadecyltrimethylammonium chloride, and octadecyltrimethylammonium chloride.
9 . The dental cement according to claim 1 , wherein the content of water (C) in the liquid component is 80 mass % or more.
10 . The dental cement according to claim 1 , wherein the dental cement does not contain an anionic surfactant or a non-ionic surfactant.