DM Dental’s ‘Eggcellent’ Tooth Decay Experiment!

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Parents often have trouble convincing their children that soda, candies, sweet foods, and sugary drinks can hurt their teeth. Their constant warnings about teeth decay simply go ignored! With this in mind, the team at Des Moines Dental Group performed an ‘eggcellent’ tooth decay experiment with…surprise! They did it with eggs!

This simple and fun egg tooth decay experiment shows the effect of certain drinks and beverages on the enamel of teeth over time. The idea behind this tooth decay experiment is simple – eggshells are like teeth enamel. When eggshells come in contact with these drinks and beverages for a long time, they get eaten away, just like tooth enamel.

Our Tooth Decay Experiment with Eggshells – What We Did

The idea is to soak raw eggs in different liquids and observe the changes in their appearance and structure for 7 days.

Our team took the following liquids for this tooth decay experiment:

  • 2 Brown Liquids – Coffee and Sweet Tea
  • Energy Drink
  • 2 Purple Liquids – Fruit Juice and Powerade
  • Diet Coke and Soda
  • 2 Types of Water – Tap Water with Fluoride and Aquafina (Acidic Water)

We poured each of these liquids in small plastic jars.

Then, we took 9 eggs and soaked one egg in each of these liquids. We left the eggs there for a week and noted the changes every day.

What We Found

  • The eggs in the brown liquids, i.e., in tea and coffee, had become significantly stained after 4 days.
  • The egg in the energy drink had become stained and the eggshell had become brittle and damaged. After 7 days, as we can see in the video, the eggshell was eaten away at some places.
  • The eggs in the purple liquids, i.e., in fruit Juice and Powerade, were damaged and badly stained after 4 days.
  • In the case of Diet Coke, the egg was badly stained, while the egg in the soda showed mild yellowish stain after 4 days.
  • The egg in Aquafina (Acidic Water) showed damage after 7 days, whereas the one in the tap water with fluoride remained unaffected and perfect over this period.

Key Takeaways from the Tooth Decay Experiment

With the findings of this eggshells tooth decay science project, here’s what parents can discuss with their children:

  • Our teeth are made up of minerals. These minerals start to dissolve if they’re exposed to acid. Acid is high in soda, tea, energy drink, and many fruit juices.
  • Soda and other drinks and beverages can stain teeth too. The tainted eggs can give you an idea of the extent of staining they can cause.
  • Many drinks and beverages have sugar. Sugar creates plaque, a sticky substance on the teeth, and a plaque build-up can become a home for bacteria. These bacteria produce acids that affect teeth by gradually eating them away.

Our Recommendations

The expert dentists at Des Moines Dental recommend the following to prevent teeth decay and maintain good dental health. With a lockdown in place, it’s good if you follow these tips and proper dental hygiene habits, because you may not see you dentists for some time. Both parents and children need to pay extra attention to their dental health now.

  • Brush your teeth twice every day, in the morning and at night.
  • Clean between the teeth regularly using interdental cleaners or dental floss.
  • Limit snacks and eat balanced and nutritious meals. Avoid carbohydrates, like chips, pretzels, and candy, which can stay on the surface of the teeth. If you eat sticky foods, brush your teeth immediately after eating.

Try this Tooth Decay Science Project with Egg Shells at Home

As kids are at home during this time, you can teach them the importance of good dental hygiene by encouraging them to perform this fun tooth decay experiment. It will be a fun way for them to learn about the importance of good dental hygiene habits, and you get to spend some quality time with your kids as well!

Parents are requested to help their children with this activity.

Things Needed:

  • 1 toothbrush
  • Toothpaste
  • 2 hard-boiled eggs
  • A small carton of water or milk
  • 1 can of dark soda pop
  • 2 disposable, clear plastic cups

Tooth Decay Experiment Steps:

  1. Boil two eggs for your children. Remember, only hard-boiled eggs can be used for this experiment. Just as the enamel protects our teeth, the hard eggshell protects the soft egg inside.
  2. Fill a plastic cup with water or milk and another with dark soda pop.
  3. Put an egg in each plastic cup and leave them overnight.
  4. The next day, gently take out the eggs from the different liquids and observe them. You’ll see that the egg in water or milk doesn’t show any changes whereas the one in soda has a darker color.
  5. Think about why the color of one egg has changed while the other remained unchanged.
  6. First ask your kids to understand what they have learned from this experiment. Discuss about the effects of acid and sugar in soda pop and how they are bad for teeth health. Explain to them why anything acidic shouldn’t stay on teeth for a long time. As an after-effect, acid may lead to teeth discoloration and cavities which is evident from eggs shown in this experiment.
  7. Brush the discolored egg in circular motions using a fluoride toothpaste and toothbrush to remove stains while demonstrating proper brushing techniques. Don’t forget to emphasize on interdental flossing with brushing.

We hope your kids will enjoy doing this soda and tooth decay experiment at home and understand the importance of taking proper care of teeth. This fun egg tooth decay experiment can not only educate your kids but also encourage them to follow their daily dental hygiene routine in a more disciplined way.