PROBLEM TO BE SOLVED: To provide a mouthpiece having a comfortable fitting feeling in an oral cavity, and having an optimum two-layer structure.SOLUTION: A mouthpiece is constituted of a shape retention part 1 made of a first resin, and formed in a shape along a tooth row, and a covering part 2 made of a second resin having a lower softening temperature than the first resin, having a softening temperature of 40°C or higher and 100°C or lower, and including the shape retention part 1.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】 口腔内での装着感も快適でありかつ、最適な二層構造を有するマウスピースを提供すること。【解決手段】 マウスピースを、第1の樹脂からなり、歯列に沿う形状に形成された形態保持部1と、第1の樹脂より軟化温度が低く、かつ40℃以上100℃以下の軟化温度を有する第2の樹脂からなり、形態保持部1を内包する被覆部2と、で構成する。【選択図】 図1
