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Can your teeth survive this experiment in one piece? Using a hard-boiled egg, Dr Chris and Dr Xand demonstrate how sugar can break down the surface of your teeth... just like an egg shell!

Step 1: Place each egg in a glass carefully so you don't crack the shell.

Step 2: Pour cola over an egg and fill the glass.

Step 3: Do the same with orange juice, vinegar and water in separate glasses.

Step 4: Leave the glasses overnight.

Step 5: Use a spoon to remove the egg from the cola and rinse it in the sink.

Step 6: Take your toothpaste and brush and try to clean the egg. What do you notice about the shell? You'll see the egg is stained or it might be cracked.

Step 7: Next, take the egg from the orange juice and clean in with water. Use your finger to rub the shell.

Step 8: Look at the egg in vinegar next. You might see it is covered in bubbles, because the strong acid of the vinegar will be dissolving the egg shell at a faster rate than the cola or orange juice. Rinse the egg and see what happens when you rub the shell.

Step 9: Finally, compare the egg in water. The surface of the shell should be drastically different to the other eggs in the experiment.

Watch the whole episode of Operation Ouch! Do Try This At Home: Eggy Teeth on ´óÏó´«Ã½ iPlayer.