Dental formula of adolescent human being before 17 years `:-`

Options

A. `(2122)/(2122)`
B. `(2123)/(2123)`
C. `(2102)/(2102)`
D. `(2023)/(1023)`

Answer

**Step-by-Step Solution:**

1. **Understanding Dental Formula**: The dental formula is a way to represent the number and types of teeth in one half of the mouth (either upper or lower). It is expressed as a fraction, where the numerator represents the upper teeth and the denominator represents the lower teeth.

2. **Identifying Teeth Types**: In the dental formula for an adolescent human being before the age of 17, the types of teeth are categorized as follows:
- Incisors: 2
- Canines: 1
- Premolars: 2
- Molars: 2

3. **Writing the Dental Formula**: For adolescents, the dental formula can be expressed as:
- Upper teeth: 2 (incisors) + 1 (canine) + 2 (premolars) + 2 (molars) = 2 1 2 2
- Lower teeth: 2 (incisors) + 1 (canine) + 2 (premolars) + 2 (molars) = 2 1 2 2

4. **Final Dental Formula**: Therefore, the complete dental formula for an adolescent human being before the age of 17 is:
- **2 1 2 2 / 2 1 2 2**

5. **Summary**: This means that on one side of the mouth, there are 2 incisors, 1 canine, 2 premolars, and 2 molars for both the upper and lower jaws.

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