The role of ivory:
Ivory is mostly used for carving ornaments and handicrafts. Ivory was a valuable material in ancient times, which was used to make tooth carvings, dentures, fans, dice and so on. In modern times, it is used as ornaments or utensils, such as tooth carving, billiards, dice, keys, mahjong, buttons and so on.
Because ivory is scarce, some luxury goods still use ivory.
Extended data
The structure of ivory:
The chemical composition of teeth or tusks of all mammals is the same, so the "ivory" materials from different animals are basically the same. Different animals may have slightly different ivory colors. However, it is easy to distinguish which animals' teeth contain different chemical structures, but it is possible to observe the chemical composition particles with a discriminator or a microscope.
Teeth and fangs are a substance. Teeth are special structures for chewing. Tusks are slender teeth that stick out their lips. They evolved from teeth and are generally used as defensive weapons. Most mammalian teeth consist of root and crown. Teeth and tusks have the same structure, which consists of pulp, pulp cavity, dentin, cementum and enamel from the inside out.
Dentin cells on the pulp cavity wall produce dentin outward. Ivory carving is mainly composed of dentin, which is the main component of teeth or tusks. The inorganic part of dentin is mainly carbon apatite, and there are very small pipes inside dentin, which radiate from pulp cavity to cementum. The structure of tubes in ivory of different animals is different, and their diameters range from 0.8 to 2.2 microns. The three-dimensional structure of microtubules is different for each animal.
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