Why does tooth decay start when the pH of the mouth is lower than 5.5?
CBSE Class 10
Class 10 Science
2016-10-18 03:33:33 UTC
Tooth enamel is the hardest substance in the body.
It doesn’t dissolve in water but corroded when the pH in the mouth is below 5.5.
It happens due to the bacteria which produce acids by degradation of sugar and food particles remaining in the mouth.