Abstract: An orthodontic elastic harmonizer device for dental-skull-facial apparatus including: vestibular flanges extending up to cover maxilla and mandible teeth and gingival vestibular of the maxilla and mandible teeth; lingual-palatal flanges extending to cover the palatal and lingual surfaces of the maxilla and mandible teeth and having a steep inclined plane extending from the back incisive plantar edge until lower frontal teeth configured to drive the tongue; an occlusal plane to connect said flanges; concave and empty volumes defined by said vestibular and lingual-palatal flanges and said occlusal plane; and cross reference protrusions configured on each edge of a back portion of the top lingual-palatal flange, in correspondence of the molar position and alignment grooves configured to accommodate alignment removable clamps on a lateral back portion of the upper surface of said occlusal plane at the corner among said occlusal plane and said vestibular flanges and lingual-palatal flanges.