Give scientific reasons.
Teeth are not considered as bones.

Explanation

**Step-by-Step Text Solution:**

1. **Composition**: Teeth are primarily made up of enamel, which is a hard, protective outer layer. In contrast, bones are composed of a matrix that includes calcium and phosphorus, which gives them strength and structure. This fundamental difference in composition is a key reason why teeth are not classified as bones.

2. **Regenerative Capacity**: Bones have the ability to regenerate and heal themselves when they are fractured or broken. This is due to the presence of osteocytes, which are specialized cells that can form new bone tissue. Teeth, however, do not possess this regenerative capacity. Once a permanent tooth is lost or damaged, it cannot regenerate or heal itself.

3. **Blood Cell Formation**: Bones contain bone marrow, which is responsible for producing new blood cells. This is an essential function of bones that contributes to the overall health of the body. Teeth do not have bone marrow and therefore do not have the ability to form new blood cells or heal in the same way that bones do.

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