Thumb and finger sucking.

The sucking reflex is normal and healthy in babies. However, a thumb or finger sucking habit can cause problems with the growth of the mouth and jaw, and position of teeth, if it continues after permanent teeth have erupted, between four and seven years of age.
From: Colgate.com

Leave a Reply

  

  

  

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>