| 摘要 |
The oral cavity function training tool (1), which is used by being inserted in the mouth, is provided with a base section (10) that is inserted in the mouth and a hollow swelled section (20) that is obtained from an elastic body formed so as to swell from the base section (10). Stepped parts (41-43, 51-53) are provided in the middle of the vertical direction on the outer surface and/or the inner surface of the swelled section (20). |
