It's important to remember that thumb
sucking is perfectly natural. In fact 80% of babies at some
point suck their thumb, some as early as the womb. The habit
helps calm in times of stress. It makes babies feel secure.
However, the habit is not without its
negative effects. Often seen in the early stages, thumb-sucking
may cause; chapped lips, cracked skin, calluses and finger nail
Most children experience only these
minor effects of thumb-sucking and tend to stop around the age
It's widely documented that
thumb-sucking should be actively discouraged through toddler years to
avoid more serious effects, which can include;
Hindered speech development
Misaligned teeth, if thumb-sucking continues as adult teeth
begin to grow
An asymmetrical bite. The soft jaws of a child
can begin to
change shape, making room for a thumb if sucked too hard and too
1) Blakemore, C. & Jennett, S. (2001) "The Oxford Companion to
the Body." Oxford University Press, London.
2) Hardyment, C. (1983).
"Dream babies. Three centuries of good advice on child care." Harper and Row, New York.
If you're not too sure which size will
best fit your child, try measuring the diameter of their thumb
with a piece of string. The exact measurements of Dr Thumb are
Note that the thumb poking out of the top of the guard does not
compromise its effectiveness. Dr Thumb is designed with grooves
down the side, so if the thumb does touch the sides, the vacuum
will still be broken.
If after measuring you're still in two
minds; to ensure maximum comfort we would always recommend the
If in the instance your child can remove the guard, there are
adjustments that can be made to help ensure a more secure fit.
The most important adjustment is
made from the front. Dr Thumb has two loops for the strap to fasten through. Undo the
strap and try going through the top loop as pictured. This
should help to firmly pull the guard down on the thumb
preventing the most determined little Houdini from wriggling
The video below runs through
further adjustments that can be made to offer a secure,
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