Effect of carbonated drinks on the erosion of tooth enamel
The hypothesis that immersing teeth in soft drinks will cause tooth erosion and the teeth to lose some of their weight has been proven to be true.
Soft drinks are very popular among children, teenagers and adults. Other than tooth enamel erosion, soft drinks are also associated with obesity, low nutrition and diabetes. This is because most soft drinks contain high levels of sugar, including fructose and sucrose. The presence of caffeine in some soft drinks can also cause sleep disorders and anxiety.
The science fair project can also be repeated to test the effects of soft drinks on other calcium-rich materials, by using pieces of chalk instead of teeth.
The experiment may also be modified to test the effects of fruit juice on tooth enamel, by using natural juices like lemon juice, orange juice or pineapple juice.
Acids in popular soda erode tooth enamel - http://www.livescience.com/health/070321_soda_teeth.html
Acid erosion - http://www.doonsouthdental.ca/InfoAndLinks/Erosion/Erosion.html