An orthodontic appliance for pushing the mandibular jaw relative to the maxillary jaw in response to jaws being closed is described. The orthodontic appliance includes a first member and a second member separated from the first member when jaws are open. The first member is fixedly attached to one of mandibular or maxillary dental arches, and the second member is rotatingly coupled with the other one of mandibular or maxillary dental arches. The first member includes a first surface and a second surface where in the second surface is extended from the first surface. The second surface is approximately parallel with the occlusal surfaces of teeth. The second member includes a first arm and a second arm where in the first arm and a second arm are formed, as an integral part of a rigid body. First member and second member are attached to molar teeth on mandibular or maxillary jaws to put them in vertical alignment. During the closure of dental arches, second arm of the second member contacts the second surface of the first member, and rotation of the second member is initiated. As a result of the rotation of the second member, first arm of the second member contacts the first surface of the first member, and further rotation of the second member pushes the mandibular jaw in either anterior or posterior direction.La présente invention concerne un appareil orthodontique destiné à repousser la mâchoire mandibulaire par rapport à la mâchoire maxillaire en réponse aux mâchoires fermées. Lappareil orthodontique comprend un premier élément et un second élément séparé du premier élément lorsque les mâchoires sont ouvertes. Le premier élément est fixé de manière fixe à lune des arcades dentaires mandibulaire ou maxillaire, et le second élément est accouplé de manière à pouvoir tourner à lautre des arcades dentaires mandibulaire ou maxillaire. Le premier élément comprend une première surface et une seconde surface où dans la seconde surface il sétend depuis la première surface.
