Question: Do you have a tool to increase tongue protrusion and tongue lateralization? Answer: We do! ARK's Oro-Navigator was specifically created to help individuals "get" the concept of tongue lateralization. It's very easy to use. Simply place the cuff on the side of the tongue and guide the tongue from one side of the mouth to the opposite side. Then repeat on the other side of the tongue. This allows the individual to feel what their tongue should be doing. Use a mirror for visual feedback so that they can see what their tongue is doing as well. .