Problem to be solved: to provide a jaw support tool which is easy to suppress the opening of the oral cavity and is easy to install in a state where there is little sense of discomfort during bedtime.The jaw support part 2 which can be abutted on the lower side of the mandibular body andA mounting strip 4 for urging the chin support part 2 against the jaw of the user andAndJaw support part 2The mandibular portion C0 is located on the left and right sides where the lower jaw part C0 of the jaw front end is located closer to the lower jaw C2 in the vicinity of the lower jawLeft and right jaw support part 2A cushion part 2a is provided to abut the lower jaw partAmong the jaw supportAt the position facing the front of the user's neckWhen the jaw support part 2 is in contact with the lower jaw partA concave space forming portion s for generating a gap between the front face of the user and the front portion is provided.Diagram【課題】口腔の開放を抑制し易く、就寝中における違和感の少ない状態で装着し易い顎支え用具を、簡単な構造で提供する。【解決手段】下顎体の下側に当接可能な顎支え部２と、顎支え部２を使用者の顎部に押し付け付勢するための装着用帯部４と、が備えられ、顎支え部２が、顎部前端のオトガイ部分Ｃ１よりも下顎角Ｃ２寄りに離れた位置の下顎部分Ｃ０を当接対象とする左右両側に備えられ、左右の顎支え部２に、下顎部分Ｃ０に当接するクッション部２Ａが備えられ、顎支え部２のうち、使用者の首部前面に対向する箇所に、当該顎支え部２を下顎部分Ｃ０に当接させた装着状態で、使用者の首部前面との間に空隙を出現させる凹入空間形成部Ｓが設けられている。【選択図】図３
