Abstract: A device for displacement of an upper molar (M) comprising a mesiopalatal cusp, comprising: a support (12) intended to be fixed to the molar (M), a rod (14) comprising a first end (14.1) anchored to a palate bone or to at least one tooth adjacent to the molar so that, when the device is in place, the rod has a given position relative to the molar (M), a rotational hinge (A1) between the support (12) and the rod (14), comprising an axis of rotation (X1) fixed relative to said rod (14) and perpendicular to the occlusal plane, said axis of rotation (X1) being arranged close to the mesiopalatal cusp of the molar (M), a spring for applying a force to the palatal face of said molar, applying a rotation to said molar (M) about the axis of rotation (X1) so that said molar (M) has a distal rotation.

Abstract: A device for moving a tooth by combining translational motion with angular movement, comprising a holder attached to the tooth and provided with a device for attaching a pivotable element cooperating with a force exerting device. The pivotable element comprises plane sloping sides for engaging the holder and thereby limiting the angular movement of the tooth to a predetermined value. A cuneal member for adjusting the angle of slope may also be provided.