It depends on the severity of the tonuge tie where it needs to be fixed or not. My DF had a tongue tie but they didn't realise until he was 5 and he always talked with a lisp, so he had to get it cut and then had to learn how to talk properly again with a speech therapist, but i think this is more rare now. Anythoer problem they may have is with breastfeeding, but again it depends on the severity of it.