"Oral device for immobilization in protrusion of the mandibular arch, method of manufacture" The invention relates to an oral device (1) for immobilization in protrusion of the mandibular arch relative to the maxillary arch, said device in the form of of inverted gutter (10) covering the mandibular arch, said gutter (10) being open at the bottom, closed at the sides by internal lateral (6) and lateral (7) walls and closed at the top by a bottom (11) ), said device (1) comprising an anterior part (2) and two lateral parts, right (4) and left (3) towards the rear, the internal shape of the gutter (10) corresponding to an impression of the teeth of the mandible , the apparatus comprising an upper face (8) intended to come approximately opposite the occlusal faces of the teeth of the jaw. According to the invention, the apparatus (1) comprises two fins (5) erected on the upper face (8) and extended upwards, each fin (5) being positioned approximately in the connection zone between the front part (2 ) and the corresponding right (4) or left (3) lateral part, and extending along the mandibular arch over a determined width, the fins (5) having an inner face (9) oriented towards the inside of the mouth and intended to come to bear against the vestibular surfaces of the teeth of the jaw when the device (1) is in place in the mouth in order to block the mandible in protrusion. The device can also provide immobilization in elevation of the occlusion. A manufacturing process completes the invention. Figure 1 « Appareil buccodentaire d’immobilisation en protrusion de l’arc mandibulaire, procédé de fabrication » L’invention concerne un appareil (1) buccodentaire d’immobilisation en protrusion de l’arc mandibulaire par rapport à l’arc maxillaire, ledit appareil en forme de gouttière (10) renversée recouvrant l’arc mandibulaire, ladite gouttière (10) étant ouverte vers le bas, fermée sur les côtés par des parois latérale interne (6) et latérale externe (7) et fermée en ha
