Name the following parts of a tooth:-
Part embedded in a cup-like socket of the jawbone
Root:-
When a person eats sugary food, then organisms A present in his mouth act on sugar to produce a substance B. The substance B first dissolves the calcium salts from the top part C of the tooth and then (rum its middle part D forming holes E. These holes ultimately reach the part F in the lower part of tooth which contains: nerves and blood vessels. The substance B irritates the nerve endings inside the tooth causing toothache.
(a) What are (i) organisms A, and (ii) substance B? (b) What are (i) part C, and (ii) part D, of tooth known as? (c) By what name are the holes E in the tooth known? (d) Name the part F of the tooth. (e) What will happen if organisms A reach part F of the tooth?
Name the following:
The three parts of a tooth.