2/ TOOTH ERUPTION

Question 1

At what age do primary teeth start to erupt, and until when do they continue to erupt?

Answer 1

• Primary teeth start to erupt around the age of six months.
• They continue to erupt until around two and a half years.

Question 2

How does the transition from primary to permanent teeth occur?

Answer 2

• The roots of the primary teeth gradually deteriorate over time, causing sufficient looseness for the primary tooth to fall out, making way for the permanent tooth to erupt.

Question 3

What are the general ranges for the eruption of deciduous (primary) teeth?

Answer 3

Dates of eruption of deciduous teeth
- Central Incisors: 6-8 months
- Lateral Incisors: 8-10 months
- Canines (Cuspids): 16-20 months
- First Molars: 12-16 months
- Second Molars: 20-30 months

Question 4

What are the general ranges for the eruption of permanent teeth?

Answer 4

The eruption of permanent teeth typically occurs in the following sequence:

1. Central incisors: 6-8 years old
2. Lateral incisors: 7-9 years old
3. Canines: 11-13 years old
4. First premolars: 10-12 years old
5. Second premolars: 11-12 years old
6. First molars: 6-7 years old
7. Second molars: 12-14 years old
8. Third molars (wisdom teeth): 17-25 years old