Dental formula of adult person is

Options

A. `2122/2122`
B. `2114/2114`
C. `2123/2123`
D. `2123/2124`

Answer

To determine the dental formula of an adult person, we need to understand the types and numbers of teeth present in the human mouth. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Understand the Types of Teeth**:
- An adult human has four different types of teeth: incisors, canines, premolars, and molars.

2. **Count the Teeth in One Jaw**:
- **Incisors**: There are 4 incisors in one jaw.
- **Canines**: There are 2 canines in one jaw.
- **Premolars**: There are 2 premolars in one jaw.
- **Molars**: There are 3 molars in one jaw.

3. **Total Teeth in One Jaw**:
- Now, let's add the number of teeth in one jaw:
- Incisors: 4
- Canines: 2
- Premolars: 2
- Molars: 3
- Total in one jaw = 4 (incisors) + 2 (canines) + 2 (premolars) + 3 (molars) = 11 teeth.

4. **Total Teeth in Both Jaws**:
- Since there are two jaws (upper and lower), we multiply the total number of teeth in one jaw by 2:
- Total in both jaws = 11 teeth × 2 = 22 teeth.

5. **Correcting the Count for Molars**:
- It seems there was an oversight in the molar count. An adult typically has 3 molars in each jaw, which means:
- In one jaw: 4 (incisors) + 2 (canines) + 2 (premolars) + 3 (molars) = 11 teeth.
- In the other jaw: 4 (incisors) + 2 (canines) + 2 (premolars) + 3 (molars) = 11 teeth.
- Total = 11 + 11 = 22 teeth.

6. **Final Count**:
- However, the standard dental formula accounts for the presence of wisdom teeth, which are additional molars. Typically, there are 4 additional molars (one in each quadrant), bringing the total to 32 teeth.
- Therefore, the correct dental formula for an adult person is:
- **2-1-2-3 / 2-1-2-3** (for the upper jaw and lower jaw respectively).

### Final Answer:
The dental formula of an adult person is **2-1-2-3 / 2-1-2-3**.