To provide a dental alginate impression material composition that solves defect of conventional alginate impression material composition with susceptibility to discoloration, using a pH indicator that the confirmation of the finish of gelling is not accurate and difficult, and poor compatibility with water in mixing.
The dental alginate impression material composition mainly comprises the alginate, a gelling reactant, a gelling conditioner and a filler, and contains 0.001-0.1 wt.% of one or two or more kind of pH indicators selected from cresol red, α-naphthol phthalein, tropaeolin 000, Thymol Blue, phenol phthalein, 0.1-10 wt.% of a water-soluble polyether which is liquid at 25°C, and 0.001-5 wt.% of an inorganic and/or organic pigment having color tone clearly different from the color developed due to the pH indicator on mixing with water and then gelling.
WATANABE NOBUTAKA
TAKEO MAKIKO
NAITO HIROKI
