PROBLEM TO BE SOLVED: To provide a dental connection member facilitating positioning of a lower jaw of a user without enlarging a connection member.SOLUTION: A dental connection member comprises: an outer having a cylindrical part as a cylindrical member having a through hole, and attached to one mouth piece of upper jaw and lower jaw mouth pieces； a sleeve having a body part as a cylindrical member having an insertion hole formed with a female screw on the internal surface, and inserted slidably into the inside of the through hole of the cylindrical part； and an inner formed with a male screw screwed with the female screw, having a rod-like insertion part held by the sleeve due to screwing of the male screw with the female screw, and attached to the other mouth piece of the upper jaw and lower jaw mouth pieces. The cylindrical part has a small diameter part. The sleeve has a pair of front and rear enlarged diameter parts having a larger diameter part than the small diameter part, and when being inserted into the inside of the cylindrical part, the one enlarged diameter part is arranged at an inner side of the small diameter part, and the other enlarged diameter part is arranged at an outer side of the small diameter part.SELECTED DRAWING: Figure 3BCOPYRIGHT: (C)2020,JPO&INPIT【課題】連結部材を大型化することなく、使用者の下顎の位置調整を容易にできる歯科連結部材を提供すること。【解決手段】貫通穴を有する筒状部材である筒状部を有し、上顎および下顎マウスピースの一方のマウスピースに取り付けられるアウターと、内表面に雌ねじが形成された挿入穴を有する筒状部材である本体部を有し、筒状部が有する貫通穴の内部にスライド可能に挿入されるスリーブと、雌ねじに螺合する雄ねじが形成され、かつ、雌ねじへの雄ねじの螺合によりスリーブに保持されるロッド状の挿入部を有し、上顎および下顎マウスピースの他方のマウスピースに取り付けられるインナーと、を有する、歯科連結部材。筒状部は、小径部を有し、スリーブは、いずれも小径部より大きい径を有する前後一対の拡径部を有し、筒状部の内部に挿入されたとき、一方の拡径部が小径部より内部側に、他方の拡径部が小径部より外部側に、それぞれ配置される。【選択図】図３Ｂ
