Abstract: An orthodontic appliance has a ramp extending laterally from the posterior teeth on one of the patient's mandibular/maxillary dental arches. The ramp is curved with a J-shaped occlusal ramp surface extending diagonally upward toward its anterior aspect. The ramp also includes a stop at the gingival end of the ramp surface. A post extends laterally from the posterior teeth on the other dental arch. The post contacts and slides along the ramp surface toward the stop to guide the mandible forward as the mandible closes. The post seats against the stop to define a limit for closure of the mandible.