It’s common for young children to put anything and everything into their mouths. This curiosity is normal, and unless it develops into bad habits that carry into later childhood, is beneficial to development. Habits like nail-biting, thumb sucking, using a pacifier excessively, and tongue thrusting as you swallow all have negative long-term effects on your oral health.
Thumb Sucking and Excessive Pacifier Use
Children are born with a natural sucking reflex, which is why they tend to gravitate towards thumb sucking or get attached to a pacifier as a self-soothing tool. This impulse disappears around the four-month mark, but most children keep the habit for much longer. This is natural, and most children end up growing out of any habitual thumb sucking or pacifier use by age four at the latest. Stopping this habit by age four is ideal, and usually results in no long-term orthodontic issues.
The pressure applied to teeth through the continuous sucking motion can cause issues with tooth positioning and the growth of the jaw bones. This can later manifest in an openbite, buck teeth, or underdeveloped lower jaw and chin.
Orthodontists usually recommend that children and parents work to break these habits on their own before treatment starts. If this proves ineffective, there are appliances that an orthodontist can install that make thumb sucking and self-soothing less pleasurable for the child.