Question

Question 13.
To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is
(a) acidic
(b) neutral
(c) basic
(d) corrosive

Answer 1

Our tooth enamel is made of calcium phosphate which is basic in nature. The bacteria present in our mouth survive on sugar particles present in leftover food and release acids which decreases the pH of our mouth and causes tooth decay. To neutralise this, we use toothpaste which is commonly basic in nature. Hence, the correct answer is option (c).