Today I’m going to take you through the structure of a tooth. In fact, the structure of a tooth is similar to that of an apple. We can simply divide an apple into three layers: the skin on the surface, the flesh in the center, and the core on the inside. The peel is the hardest part of the apple and protects it from being easily damaged. Our teeth are also divided into three layers, the outer layer similar to the peel is hard enamel, translucent, it is the hardest tissue in the human body, harder than bone. The middle layer similar to the pulp is yellow dentin, which is softer than enamel, which is full of tiny tubules with tiny cells and tissues. In the center of the tooth is a kernel-like chamber we call the pulp chamber, which, as the name implies, contains the pulp tissue. In layman’s terms, it contains the nerves, blood vessels, and lymphatic tissue of the tooth. Similar to a fruit that receives nutrients from the trunk of the tree through the stalk, the tooth receives nutrients from the body through the pulp tissue. You may have noticed that this tooth doesn’t look much like the one we see in our mouth. It is actually because our teeth grow inside the sockets formed by the alveolar bone, and the surface is covered by reddish gums, just like a big tree growing in the soil. Just like the crowns and roots of trees, teeth are also divided into crowns and roots. Usually what we see in our mouth is only the crown part of the tooth.