PROBLEM TO BE SOLVED: To provide a powder-liquid type denture base liner characterized in that the powder material and the liquid material show good affinity at the start of mixing, initial increase of viscosity is gradual so that air bubbles are hardly taken in the paste, and the mechanical strength after the cure is excellent.SOLUTION: The powder-liquid type denture base liner comprises (i) a liquid material including a radical-polymerizable monomer, preferably a high molecular weight monomer of which molecular weight is 150 or more or a polyfunctional monomer, as the main component, and (ii) a powder material including non-bridging organic resin soluble in the liquid material (i) as the main component, where at least one of the liquid material (i) and the powder material (ii) includes a radical polymerization initiator, and further at least one of the liquid material (i) and the powder material (ii) includes a dendritic polymer, preferably, hyperbranched polymer.
