The class 1 appliances are divided in four types of arch shape. They are engaged in basal skeletal disharmonies, responsable for horizontal occlusal deficits, as transverse insufficiences, or vertical ones, as open or deep bites, where there aren’t alterations from class 2 and 3 dental classes.  The device is tailored for cranial structureswith an oval conformation, fitting within thenormal range and featuring naturally roundeddental arches.MODEL Integral S  shaped dental arches Cranial index: mesocefalo 45-65mm low flange (deep)