Dentin is produced by

Options

A. Osteoblasts
B. Odontoblasts
C. Chondroblasts
D. Ameloblasts

Answer

To determine what produces dentin, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Dentin**: Dentin is a mineralized tissue that forms the bulk of a tooth. It lies beneath the enamel and surrounds the pulp.

2. **Identifying the Cell Types**: The question provides four options: osteoblasts, odontoblasts, chondroblasts, and ameloblasts. We need to understand the role of each of these cells.

3. **Analyzing Each Option**:
- **Osteoblasts**: These cells are responsible for bone formation. They are not involved in dentin production.
- **Odontoblasts**: These are specialized cells located in the dental pulp that are responsible for the formation of dentin. They secrete the organic matrix of dentin and control its mineralization.
- **Chondroblasts**: These cells are involved in cartilage formation and are not related to dentin.
- **Ameloblasts**: These cells are responsible for the formation of enamel, not dentin.

4. **Conclusion**: Since odontoblasts are the cells responsible for producing dentin, the correct answer is **odontoblasts**.

### Final Answer:
Dentin is produced by **odontoblasts**.

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