How to Help Your Child Stop Sucking Their Thumb?
Thumb or finger sucking can often be seen in your child's primary teeth if it is affecting the form of his or her mouth. If the thumb or finger habit affects the baby teeth, it is likely that the roof of the mouth, supporting bones, and permanent teeth will be damaged as well. A small palate, an open bite, and a crossbite are all common outcomes of prolonged thumb or finger sucking.