Medical device for fighting overweight or obesity in humans by getting a faster feeling of fullness, comprising a splint (12) that can be attached to the human maxilla (10) and a splint (12) that can be attached to the lower jaw human, which are adapted respectively to the dental crowns and cover at least a part of the occlusal surface of the teeth with chewing surface (13) for the bite elevation (20), equipping the splint (12) of the upper and lower jaw ( 10, 11) at least a part of the teeth with chewing surface (13) with an occlusal elevation (14), formed as a section of soul (23) protruding from the splint, for the decrease of the chewing surface (15) , which overlaps the apexes of the cusps (17) of a tooth with a chewing surface (13) to join the bite elevation (20) to an extension of the chewing relief of the tooth with a chewing surface (13) to, and the splint adjusts the occlusal elevation (14) in the area of the first and second premolars (4, 5) and the first molar (6) of the upper and lower jaw (10, 11), so that the bite position The end results in a sufficiently stable position of a mechanical occlusion with reduced masticatory center.Dispositivo médico para luchar contra el sobrepeso o la obesidad en humanos al conseguir una sensación de saciedad más rápida, que comprende una férula (12) que puede unirse al maxilar superior (10) humano y una férula (12) que puede unirse al maxilar inferior humano, que están adaptadas respectivamente a las coronas dentales y cubren al menos una parte de la superficie oclusal de los dientes con superficie masticatoria (13) para la elevación de mordida (20), equipando la férula (12) del maxilar superior e inferior (10, 11) al menos una parte de los dientes con superficie masticatoria (13) con una elevación (14) oclusal, conformada como una sección de alma (23) que sobresale de la férula, para la disminución de la superficie masticatoria (15), que se superpone a los vértices de las cúspides (17) de un diente con superficie mas