Question

Tooth decay is caused by presence of a basic substance in the mouth

Answer 1

Explanation:

Tooth decay is caused by the presence of an acid. When saliva accumulates in the mouth, it decreases the pH in oral cavity making it acidic. Acidic conditions are suitable for growth of bacteria and cause tooth decay.

Answer 2

Answer:

Simple sugars found in food often are the primary source of bacteria, which are further consumed up by bacteria,and changes to an acidic compound, thus causing caries. - So the statement that "tooth decay is caused by a presence of base" doesn't hold true. - So, it's a false statement.