An oral stimulator comprising a homeoactivator (2) having a body (3) made with a substantially U-shaped shaping, a first groove (6) capable of receiving inside it at least one portion of the upper dental arch of a patient being provided on the upper surface (5) of the body, a second groove (8) capable of receiving inside it at least one portion of the patient's lower dental arch being provided on the lower surface (7) of the body. The first groove (6) comprises a first portion (10) shaped to match the teeth of the upper arch according to a desired position of such teeth, the second groove (8) comprising a second portion (11) shaped to match the teeth of the lower arch according to a desired position of such teeth.
