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(a) Which part of the tooth is the hardest substance in the body? It is rich in which mineral? (b) A tooth is man is composed of which material? What is enclosed in it? |
Answer» (a) Enamel is the hardest substance in the body. It is rich in calcium. (b) In man, tooth is composed of hard, bone-like substance called dentine. It enclose the pulp cavity. |
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