....and every orthodontist in the building was clamouring to hand them their card,lol. I know not funny. There has to be somebody somewhere along the way that says enough is enough and this habit has to stop.

One of the reasons I do the parents provide any food for infants or that is in a bottle - and that includes milk or juice with no reduction in price that some parents will strive to get the child on table food and using a cup at least for juice just to in a sense safe money. Regardless of motivation I get a more closely normally advancing child into care.