Dental A to Z

Thumb Sucking

Babies can be born sucking a thumb or a finger! X-rays sometimes show the developing child sucking a thumb whilst still in the womb. It is quite normal for infants to suck a thumb or a finger and only becomes a problem if the habit is allowed to become persistent from about 2 years of age. The thumb can become very sore, which usually acts as a deterrent.

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