| 摘要 |
<p>Disclosed is a mouthpiece for exercising joint part of craniums. The present invention includes a protrusion which is formed on a part of at least one of the upper surface and lower surface of the mouthpiece to be pressed by user′s teeth. The protrusion is formed on a part of at least one of the right surface and left surface of a surface in contact with teeth that press the mouthpiece. According to the present invention, physical stimulation can be selectively applied to a specific part of the brain since selective exercise becomes possible in the joint part of cranium.</p> |
