Tooth Enamel
The layer of enamel over the tooth crown is a substance similar to bone. A section through enamel shows that, like bone, it is composed of crystals of calcium phosphate embedded in a ground substance. These crystals are built up into rods or prisms which make enamel the hardest substance in the body.
@tonyballa07
Rods?
Jermz1997 9 months ago
rods are the hardest substance in the body thanks for sharing. now you know
tonyballa07 4 years ago