Which of the following is not related to human teeth ?

Options

A. Enamel
B. Dentalium
C. Crown
D. Root of tooth

Answer

To solve the question "Which of the following is not related to human teeth?", we will analyze the options provided and identify which one does not pertain to the anatomy or structure of human teeth.

### Step-by-Step Solution:

1. **Understand the Structure of Human Teeth**:
- Human teeth consist of several parts: the crown, root, enamel, dentine, and pulp.
- The **crown** is the visible part of the tooth above the gum line.
- The **root** is the part of the tooth that is embedded in the jawbone.
- The **enamel** is the hard, outer covering of the crown.
- The **dentine** is the layer beneath the enamel and extends into the root.
- The **pulp** is the innermost part of the tooth containing nerves and blood vessels.

2. **Identify the Options**:
- The question likely provides multiple options, including terms related to human teeth and one that is not.
- We need to evaluate each option to determine if it is a part of human teeth.

3. **Evaluate Each Option**:
- **Option 1**: Could be a term related to the anatomy of teeth (e.g., enamel, dentine).
- **Option 2**: If this option is "dentilium," we need to recognize that it refers to a genus of marine mollusks and is not related to human teeth.
- **Option 3**: Another term that could be related to the anatomy of teeth.
- **Option 4**: Another term that could also be related to the anatomy of teeth.

4. **Conclusion**:
- After evaluating the options, it is clear that "dentilium" (Option 2) is not related to human teeth, as it refers to a genus of marine organisms and not a part of the tooth structure.

5. **Final Answer**:
- The correct answer is **Option 2: Dentilium**.