A tooth cannot walk on its own path and breeds like other creatures. In addition, if the tooth is not inside the living body, it does not develop itself. However, like any other organ, teeth have a certain amount of nerves and blood vessels. This blood flow helps teeth grow and mature before the teeth appear in the mouth.
The hard tissue that covers the teeth is called enamel. It is made of calcium phosphate (hydroxyapatite) crystals and is the hardest substance in the body. There are also some types of proteins, but enamel does not contain any living cells. This is why, unlike most body tissues, skeletons cannot regenerate themselves.
The dentin located under the enamel is also a hard tissue composed of calcium phosphate crystals. Although weaker than enamel, it contains more organic matter but may not be regenerated.
The pulp is the central part of the teeth and contains nerves and blood vessels. The organic portion is useful during tooth growth. The nerve helps to cause pain and warns of danger (tooth decay or infection).
When a tooth has already developed and is in its usual position on the jaw, it does not need nerves and blood vessels to maintain its function. This is why a tooth with a root canal can remain in the person's mouth for a lifetime and serve its purpose of chewing, eating, and speaking.
The teeth are made of hard tissue that cannot be regenerated. But dental pulp allows the growth of teeth, and nerves are used later to warn of danger. Therefore, it can be considered that the teeth are alive. But if it goes through the root canal, it will no longer be alive, but it will remain in the mouth and remain functional.
