Me, too!!! 60 years old and sucked my thumb, until I was 9 years old. My dear Mother, literally tried EVERYTHING to get me to quit, to NO avail. As an adult...NO braces, ever...perfect straight teeth. My dearest friend, hated me. She never sucked her thumb or fingers and had to suffer with braces.
However, I DO have a very *high roof* on the upper part of my mouth, due to my sucking my thumb. But, this does not affect my bite or teeth, in any way.
I just stopped, on my own. I remember the day, I made my decision...it was just, time to stop.
There are just some kids, who suck their thumbs or fingers or twist their hair or have their blank-ie, so on and so forth.
To my knowledge, having these habits, is not necessarily an indication of lack of vitamins, usually it is a *security* issue, especially when they are older. Listen, I drank milk, ate cheese and had plenty of calcium and was a healthy kid...mine was a *security* issue. I also, bit my nails until I was 18 years old. I suddenly decided one day, to stop. My nails are strong and healthy, to this day and I haven't bitten them since, that day.
Infants who suck thumbs and fingers, frequently just need to suck more, that is why I am not opposed to pacifiers.
All my daughters, I gave them pacifiers. None of them, sucked their thumbs or fingers and only my oldest daughter had to have braces. Now, this was due to genetics. The size of her mouth, came from her father's side and the size of her teeth, came from my side...needless, to say, her teeth were TOO large, for the size of her mouth. Had NOTHING to do with the use of a pacifier.
So, make your own determination. My Orthodontists told me, that the need for braces,
usually is due to the teeth and jaw not being the right size, for each other.