Medical | Health | Anatomy on Instagram: "The Biological Science Behind Tongue-Tie Release in Infants Tongue-tie, medically known as ankyloglossia, is a condition present at birth where the lingual frenulum (the thin band of tissue connecting the tongue to the floor of the mouth) is unusually short, thick, or tight. This restricts the tongue’s normal range of motion, which can interfere with breastfeeding, swallowing, and later speech development. Biologically, effective feeding in infants depen