M.W.
I have the same problem with my 5 year old daughter. She sucks her thumb all the time. We even have a code that our family uses, TMT, which stands for TOO MUCH THUMB! We say it all day. She will even stop riding her bike for a minute to get a taste of her thumb. She also has to rub her ear. I asked her one day what was so great about her thumb and ear. She said her ear is so soft and her thumb is just so yummy! I have asked her dentist over and over if she will have teeth problems and he said as long as she stops when her permanents come in. I think that it may take kids saying things to her. It will only take a few little teases and I am sure that they will become more aware. I have also told her that she can only suck her thumb in her bed. She will sometimes go to her bed and then realize that she would rather play. Other then that, I have no great words of wisdom, I do want you to know that there are others out there fighting the same battle and if you find the magic cure, PLEASE- let us know! Good Luck.