The Schwarz plate is a removable orthodontic appliance, belonging to the group of active appliances, commonly used in orthodontic practice. In a standard plate, acrylic covers the palate and part of the alveolar process from the side of proper oral cavity. Frӓnkel, the originator of the appliances called function regulators, belonging to the group of functional appliances, was the first who describe the vestibule buccal plate, the use of which is limited to the lower dental arch, and the characteristic feature is the placement of acrylic on the cheek side, instead of the linguistic one. Placing the acrylic part of the appliance in the vestibule causes the lips and cheeks to be moved away from the dental arches, which triggers the modeling effect of the tongue. The article presents a case of clinical application of vestibular buccal plate, which is a modification of Schwarz plate.

Key words: vestibule buccal plate, crowding in the lower dental arch, active appliance, functional appliance.