| 摘要 |
A dental impression composition which contains as a main component 4 to 40 % by weight of an acetoacetylated polyvinyl alcohol having an acetoacetylation degree of 0.5 to 15 mol % and a polymerization degree of 100 to 1,500, and additional components 1 to 20 % by weight of gelling agents and 20 to 85 % by weight of fillers. |
