ARISTA PAWLOWSKI
Mountain Dew and Tooth Decay
!
My question is:
Does Mountain Dew
decay teeth? My
hypothesis is, if I test
three liquids then
Mountain Dew will
decay the eggshell
because Mountain Dew
has a lot of sugar. The
materials I used are,
three small cups,water,
Juicy Juice apple juice,
Mountain Dew [not diet],
and three eggs.
!
I filled one small
cup with water, halfway
full. Another cup with
apple juice, halfway full.
The last cup I filled with
Mountain Dew, also
halfway full. Then I
placed one egg in each
cup. I let them sit for
one day and checked
the results periodically.
!
My independent
variable was the
Mountain Dew, the thing
I expected to affect the
dependent variable. My
dependent variable was
the eggshells, what I
thought would be
a ff e c t e d d u r i n g t h e
experiment. My
controlled variable was
the water, it ruled out
anything affecting the
outcome that wasnʼt
supposed to.
!
In my results the
egg in the water was
perfectly fine. The eggs
in the apple juice and
Mountain Dew were
colored but not
decayed.
!
The data did not
support my hypothesis,
the eggshells were only
colored, not decayed.
A limitation of this study
is that eggshells are not
identical to teeth. Teeth
may react differently.
Nevertheless, because
Mountain Dew and
apple juice were able to
color the eggshells, it
would be safe to say
brushing your teeth after
having these liquids
would be a good idea.