What drinks will rot the tooth the fastest?

We will be experimenting with teeth and soft drinks. We will put 1 tooth per drink. The soda's that we are using are Coke and Ginger Ale. The main purpose of this experiment is to see what drink will make the tooth rot more and faster.
Avneet Deol Jassimran Garcha
Grade 6


I think the teeth will rot faster in the coke because it contains more sugar than our other soda. Coke is also one of the most original ways to make teeth rot. Due to the high amount of caffeine, the coke is also probably going to damage the teeth the most. Ginger Ale will also damage the tooth but not as much as the coke will.





Link: https://www.healthline.com/health/dental-oral-health/what-does-soda-do-to-your-teeth#:~:text=The%20acid%20in%20soda%20attacks,good%20care%20of%20your%20teeth.

Soda can harm and damage your teeth very badly. Soda is acidic so drinking soda a lot puts acids in your mouth and this damages your gums and enamel. The more soda you drink, the more acid you put in your mouth. To prevent this, we should avoid soda as much as possible. So you should keep a limit of drinking only one soda drink, at most. Also you should not be brushing your teeth right after you drink soda because you will be rubbing the soda around on your teeth. You should wait 30 minutes before brushing, and  rinse your mouth with water before that. It will mostly damage an important part of your teeth, the enamel. It will also cause a lot of cavities. 




  • Controlled Variable: The sodas won’t change since the teeth are perfectly clean.
  • Manipulating Variable: The teeth are going to change since they are going to be in different types of sodas and the sodas will contain different types of nutrition facts, both of the teeth are going to change.
  • Responding Variable: The coke made the tooth rot faster.



1. Collect all your materials: 2 cups, Coke, Gingerale,and teeth. Trifold, washing tape, paint and brushes, paper, poster paper, scissors, and glue. 

2. Get your cups and fill one of them with Coke and the other with Gingerale, fill half of the cup

3. Then put in one tooth in each cup 

4. Put bowl over your cups

5. Collect your data

1. Get your trifold and put washing tape around its side

2. Get your paint and write your tittle 

3. When you got your data you can print it out and glue it on the trifold 


  • First 12 hours (Ginger Ale)- Tooth is partly rotten not completely rotten. Has 1 black dot (cavity) and has 1 small hole. Coke- Has many cavities and multiple holes. Has a partly brown shade to it.
  • 24 hours ( Ginger Ale)- Has a partly brown shade to it. Multiple holes have been added since the first 12 hours. Multiple cavities have also been added since the first 12 hours. Coke- really brown (the actual colour of the coke). Has way more cavities than the first 12 hours. Has 1 big cavity in the middle. It also has multiple holes since the first observation. The big cavity in the middle has 1 big hole in it’s centre too. 





The experiment showed the colour, size and how rotten the tooth was. The experiment did not show us the inside of the teeth.



Our soda experiment was a success! We carefully observed our dada and we got our results. Our hypothesis was correct! The coke did do more damage than the Ginger Ale. The teeth were both rotten but the coke did a lot more damage.



This experiment will teach us what soda rots your teeth more. We saw that the tooth kept getting smaller as the experiment went on. Coke shrunk it more and it stained it more. This is because there are 39 grams of sugar in coke and 35 grams of sugar in Canada Dry. It looks like coke is more harmful to teeth than Canada Dry. We can use this information to teach the public to drink less soda and if they must drink it, to choose sodas that have less sugar and less colouring. 


Sources Of Error

The sources of error include: 

  • The shape of the teeth was not the exact same shape as the other tooth
  •  the size of the teeth were diffrent, which may affect the speed of rotting
  • the weight of the teeth was not measured before the experiment so we can't be sure if one tooth shrunk more then the other
  • the weight after the experiment was not measured so we can't be sure if one tooth shrunk more then the other
  • we used a one cup measuring bowl, we filled it up half way, and poured it into the glasses. The measurment may not be exact for both glasses which will affect the teeth, because if there is a little soda less then the other glass it might change the results of the experiment. 
  • The pictures can be misleading, because they are taken at diffrent angles, which may make one reslut diffrent then it actually is. 


We thank our parents for helping us buy the drinks, clean up after the experiment, and buying the materials for the project. 


No Log Book Provided