PURPOSE: To eliminate the generation of a pressure pain, by constituting a lining material layer of a room temp. plastic material layer and a rubber elastic material layer.

CONSTITUTION: A lining material layer 3 is formed to a denture base 1 having an artificial tooth 2 implanted therein on the mucous membrane surface side thereof. The lining material layer 3 consists of the room temp. plastic material layer 4 positioned on the side of the denture base 1 and the rubber elastic material layer 5 bonded to the denture base 1 at the peripheral part thereof and sealing the room temp. plastic material layer 4 between the denture base 1 and said layer 5. When occlusion force is applied to the artificial tooth 2, pressure is added to the room temp. plastic material layer 4 through the rubber elastic material layer 5 and the room temp. plastic material is deformed to press the mucous membrane surface of the alveolar ridge 7 by uniform force.