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Dental Hygiene

Science fair project: eggshells=tooth enamel?



I am a 7th grader and I am doing a science fair project on "Which toothpaste whitens the best?" I handed in a sheet w/ info about my topic but my teacher said that I shouldn`t use eggshells because they are not similar to tooth enamel. I have no idea what else to use though & I have read about mant projects that are using eggshells also. Do you have any suggestions or facts that I can use to prove my teacher wrong? Please help ASAP!! Thanks.


I am a dental hygienist, and even my son used eggshells for a project!  We used brown eggs and it was great.  We used Crest white strips and other whitening products but we did not use toothpaste.  I think it would be interesting.  Be sure you brush the eggshell (if you are using them) for the same amount of time you would brush one`s teeth.

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Response by:

Michele P Carr, RDH,  MA Michele P Carr, RDH, MA
Associate Professor of Dental Hygiene
Associate Professor of HS Nursing Quality & Research
College of Dentistry
The Ohio State University