Question

Commonest disease of teeth is
A) Mottling
B) Caries
C) Dissolution of enamel
D) Pyorrhoea

Answer 1

Hint: Teeth are made up of hard bone like material. Not taking good care of teeth can cause teeth diseases. Teeth disease can be identified by common symptoms like colour and shape of the teeth.

Complete Answer:
A tooth is the hard part of our body. It is used for chewing food, speaking and even smiling. Teeth consist of four parts:
A) Enamel- the hard surface of the tooth.
B) Dentin- yellow part under enamel.
C) Cementum tissue that covers the root and keeps the tooth in place.
D) Pulp-soft connective tissue which contains nerves and blood vessels. Any kind of abnormality or infection to these parts can lead to teeth disease.

Some teeth diseases are-
1) Mottling- It is caused by excess fluoride use. In this disease yellowish stains are developed on the enamel.
2) Caries- It is the damage to the tooth due to decay causing bacteria in the mouth. This can lead to a small cavity. It is the most common disease of teeth.
3) Dissolution of enamel- It is caused by the consumption of acidic food like soft drinks, fruit juices.
4) Pyorrhoea- It is a serious gum infection that damages gums and can destroy jaw bone.

Thus the correct answer is (B). The commonest disease of teeth is caries.

Note: Dental caries are the permanently damaged areas in the teeth. It is majorly caused by bacteria, sugary drinks or poor teeth cleaning. It is not treated, it can cause pain, infection or even tooth loss.