By the time the milk teeth erupt if a child continues with his or her habits like thumb sucking, tongue thrusting, lip sucking, etc. it is very likely that will affect the growth pattern of the jaw and the position of the teeth as undue pressure is applied on a particular spot. The growing jaw and teeth are very malleable that’s why some of the orthodontic appliances used in children are meant to modify the growth pattern. So if a child continues with these habits, take him or her to see a dentist.