Question

(c) What is dental plaque ? What harm can it do ? How can the formation of plaque be prevented ?

Answer 1

​Dental plaque indicates a sticky, pale yellowish layer of food particles and bacterial cells that deposits on the teeth.​
If they are not cleaned regularly then it causes tooth decay.

Prevention:

(i) Brushing teeth daily after eating food prevents the formation of plaque.
(ii) Floss between teeth should be done at least once a day in order to remove food particles and bacteria.
(iii) Using an antibacterial mouth rinse to reduce microorganisms that cause plaque and gum disease.