I... what? Nobody's frenulum is cut when they're a baby. Who told you that? It sounds like you have a congenial disorder called Ankyloglossia.
"Ankyloglossia, also known as tongue-tie, is a congenital oral anomaly which may decrease mobility of the tongue tip[1] and is caused by an unusually short, thick
lingual frenulum, a membrane connecting the underside of the tongue to the floor of the mouth.[2]"
"This can then promote an infantile swallow and hamper the progression to an adult-like swallow which can result in an open bite deformity."
Some babies do have their lingual frenulum cut as for it can interfere with breastfeeding.
