Intraoral orthodontic pacifier/nipple appliances having integrated orthodontic functionality. The appliance has an integrated orthodontic mechanism. The bulb expands or moves upward and expands outward as a child sucks on it, to counteract inward pressure of the cheeks and the lateral portion of the lips caused by suction or sucking action. The invention also provides products including the orthodontic appliance, as well as methods of using the appliance and products including the appliance in the inhibition and treatment of certain malocclusions in the primary dentition of young children.