PROBLEM TO BE SOLVED: To provide a teeth separation system for reducing gnashing by positioning between upper and lower teeth of a user.SOLUTION: A teeth separation system comprises a left base member (12) and a right base member (14). The left and right base members (12, 14) have respectively, an upper surface and a lower surface in an almost vertical direction, an outer edge (20), a front part (22), a rear part (24), and an inner edge. The respective base members (12, 14) further comprise, a center area which has an almost elliptic shape, a front area, and a rear area which has a semi-circle shape. A support member (30) which has an arch-shape can be positioned in the almost vertical direction. The support member (30) comprises inner and outer surfaces (32, 34), and upper and lower edges. The upper edge is formed vertically in an integrated state with the base member (12, 14) on the outer edge (20). The support member (30) has a termination on a position adjacent to the base member (12, 14). The support member (30) has an arch-shaped front part between the base members. Lower surfaces of the base members (12, 14) are separated from the lower edge of the support member (30) in a height direction.SELECTED DRAWING: Figure 1【課題】使用者の上歯と下歯の間の位置調整によって歯ぎしりを減少させる歯分離システム。【解決手段】歯分離システムは左ベース部材（１２）と右ベース部材（１４）を有する。左、右ベース部材（１２、１４）はそれぞれ略垂直方向の上面および下面、外縁（２０）、前方部（２２）、後方部（２４）、および内縁を有する。各ベース部材（１２、１４）は略楕円形の中心領域、前方領域、半円の後方領域を有する。弓形形状の支持部材（３０）は略垂直方向に位置できる。支持部材（３０）は内面および外面（３２、３４）、上縁および下縁を有する。上縁はベース部材（１２、１４）と外縁（２０）において垂直に一体的に形成される。支持部材（３０）はベース部材（１２、１４）に隣接した位置に終端を有する。支持部材（３０）はベース部材の間に弓形の前部分を有する。ベース部材（１２、１４）の下面は支持部材（３０）の下縁から高さ方向に離れている。【選択図】図１
