Permanent Tooth Eruption

Question 1

At what age does mixed dentition normally start and how long does it last for

Answer 1

6-11 years

Question 2

Do Lowers or Uppers erupt first

Answer 2

Lowers with the exception of 2nd premolars

Question 3

What is the order of eruption in the upper arch

Answer 3

First molar, Central Incisor, Lateral Incisor, 1st premolar, 2nd premolar, Canines, Second molar, Third molar

6 1 2 4 5 3 7 8

Question 4

What is the order of eruption in the lower arch

Answer 4

First molar, Central Incisor, Lateral Incisor, Canines, 1st premolar, 2nd premolar, Second molar, Third molar

6 1 2 3 4 5 7 8

Question 5

At what age do the upper and lower central incisors erupt

Answer 5

upper 7-8 years

lower 6-7 years

Question 6

At what age do the upper and lower lateral incisors erupt

Answer 6

upper 8-9 years

lower 7-8 years

Question 7

At what age do the upper and lower canines erupt

Answer 7

upper 11-12 years

lower 9-10 years

Question 8

At what age do the upper and lower 1st premolar erupt

Answer 8

upper 10-11 years

lower 10-12 years

Question 9

At what age do the upper and lower 2nd premolar erupt

Answer 9

upper 10-12 years

lower 11-12 years

Question 10

At what age do the upper and lower first molar erupt

Answer 10

6-7 years

Question 11

At what age do the upper and lower second molar erupt

Answer 11

upper 12-13 years

lower 11-13 years

Question 12

At what age do the upper and lower third molars erupt

Answer 12

17-21 years