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With did this as an experiment in our Citizen Science area... using real teeth! 
We submerged teeth in flasks containing a variety of substances (water, cola, OJ and coffee) and asked visitors to compare the effects. 
Teeth were attached clear string and could be raised up above the level of the fluid for observation. 
To increase the gross factor, we included magnifying glasses so the staining and decay could be observed up close. 

Sourcing teeth: We called one of the dental professors at a local university. 
You can also try your local dentist. 

Sara


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Sara Poirier
Researcher/Programmer
Astronomy & Space Sciences
Ontario Science Centre
Toronto, Ontario
PH 416 696 4590 FX 416 696 3181
[log in to unmask]
www.OntarioScienceCentre.ca

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