A medical device for combating overweight or obesity in humans by achieving a more rapid feeling of satiety utilizes a bite raiser which can be connected to the human maxilla and/or mandible and which covers at least some of the occlusal surface of the masticatory teeth. A splint adapted to tooth crowns equips at least some of the masticatory teeth with an occlusal elevation for reducing the size of the masticatory surface. The occlusal elevation overlies the cusp tips of a masticatory tooth in order to link the bite elevation to a spanning of the masticatory relief of the covered masticatory tooth.