Question

To prevent tooth decay we are advised to brush our teeth regularly. The nature of the toothpaste commonly used is

• A. acidic
• B. neutral
• C. basic
• D. corrosive

Answer 1

The correct option is C

basic

The explanation for the correct option (C):

• When the food containing sugar is eaten, then the bacteria present in the mouth break down the sugar to form acids. Thus, after eating a sweet item, acid is produced in the mouth.
• This acid causes the mouth's pH to drop, making it acidic.
• When the pH of the acid produced in the mouth goes below 5.5, tooth decay begins.
• The best way to prevent tooth decay is to clean the mouth thoroughly after eating the food by rinsing with lots of clean water.
• Many kinds of toothpaste contain bases to neutralize the mouth acid. So, using toothpaste which is basic for cleaning the teeth can neutralize the excess acid in the mouth and prevent tooth decay.

Final Answer: Hence, option (C) is correct. The nature of the toothpaste commonly used is basic.