Name: (ii) The living part of the tooth

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Solution

Answer: Pulp

Pulp is a small, soft and living structure present at the inner side of teeth.

Blood vessels and nerves run through the pulp of the teeth.

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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.

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(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?

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