Lingual Palatal Suction: Entire tongue should rest up against the palate.
Suction Cup Effect with High Resting Tongue Posture and Lips Closed. When the lips are sealed and the tongue is pressed up against the palate, intraoral pressure dynamics will help support high tongue posture during natural resting condition. This helps improve nasal breathing, reduce mouth breathing and snoring, as well as improve tongue-base obstruction, and positional sleep apnea and/or UARS.
Myofunctional therapy and lingual frenuloplasty can help patients with low tongue position associated with functional ankyloglossia (tongue-tie).
Reference: Engelke, W., Jung, K. and Knösel, M., 2011. Intra-oral compartment pressures: a biofunctional model and experimental measurements under different conditions of posture. Clinical oral investigations, 15(2), pp.165-176.
Vertical maxillary growth ("gummy smile") often results from low tongue posture.
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