The present invention relates to an upper tooth seating part on which the upper teeth of the human body can be seated, a lower tooth seating part on which the lower teeth of the human body can be seated, and a connecting part for connecting the upper tooth seating part and the lower tooth seating part. Mandibular advancement including: a detection unit that can detect the posture of the human body； and a drive unit that can move the lower tooth attachment part relative to the upper tooth attachment part based on the detection result of the detection part Relates to the device. [Selection] Figure 2本発明は、人体の上歯が安着できる上歯安着部と、人体の下歯が安着できる下歯安着部と、上歯安着部と下歯安着部を連結する連結部と、人体の姿勢を検知することができる検知部と、検知部の検知結果に基づいて、下歯安着部を上歯安着部に対して移動させることができる駆動部とを含む下顎前進装置に関する。【選択図】図２
