Problem to be solved: to provide a medical mouthpiece for preventing the height adjustment member from protruding or falling off.Mouse piece 10Upper jaw piece 12 attached to upper jawThe mandibular piece 14 attached to the dentition of the lower jawThe upper jaw piece 12 and the lower jaw piece 14 are connected to each other so that they can be opened and closed.A positioning member for positioning the lower jaw piece 14 relative to the upper jaw piece 12；The outer circumference of at least one of the upper jaw piece 12 or the lower jaw pieceOrOn the opposing opposing surfaces of the maxillary piece 12 or the lower jaw pieceA locking portion 36 having at least one mounting portion or at least one portionMounted on the fitting portion of the locking partA height adjusting member 40 sandwiched between the upper jaw piece 12 and the lower jaw piece 14.Diagram【課題】高さ調整部材の突出や脱落を抑止した医療用マウスピースを提供する。【解決手段】マウスピース１０は、上顎の歯列に装着される上顎用ピース１２と、下顎の歯列に装着される下顎用ピース１４と、上顎用ピース１２と下顎用ピース１４とを開閉可能に連結する連結部材２０からなり、上顎用ピース１２に対して下顎用ピース１４を位置決めする位置決め部材と、上顎用ピース１２又は下顎用ピース１４の少なくとも一方の外周、又は、上顎用ピース１２又は下顎用ピース１４の互いに対向する対向面に、少なくとも一ヵ所以上形成された被装着部を有する係止部３６と、係止部３６の被装着部に装着され、上顎用ピース１２と下顎用ピース１４との間に挟持される高さ調整部材４０と、を備える。【選択図】図１
