Oral Anatomy: Eruption Sequence

Question 1

Eruption starts once ____ of the root formation is complete.

Answer 1

50%

Question 2

What is the sequence of eruption for primary teeth?

Answer 2

Centrals - 6 months
Laterals - 9 months
M1 - 12 months
C - 18 months
M2 - 24 months

Question 3

When should you expect a child to have their full primary dentition?

Answer 3

2 years

Question 4

When does calcification for all primary teeth begin?

Answer 4

4-6 months in utero

Question 5

When does the initial development of all primary teeth begin?

Answer 5

6 weeks in utero

Question 6

What is the age range that a child is in the mixed dentition?

Answer 6

6-12

Question 7

What is the first permanent tooth to erupt?

Answer 7

Mandibular first molar

Question 8

T/F: Permanent incisors often erupt lingual to their primary counterparts.

Answer 8

True

Question 9

Permanent mandibular teeth generally erupt before maxillary teeth, except for which teeth?

Answer 9

Maxillary premolars erupt before mandibular premolars

Question 10

T/F: The maxillary canine erupts before the maxillary premolars.

Answer 10

False

Mandible - canines before premolars

Maxilla - Premolars before canines

Question 11

When do the permanent first molars erupt?

Answer 11

6 years old

Question 12

When do permanent teeth begin to develop?

Answer 12

4 months in utero

Question 13

When does the first permanent tooth begin to calcify?

Answer 13

1st molar at birth

Question 14

How long does calcification of permanent teeth take in general?

Answer 14

3 years

Question 15

How long does it take for root completion after eruption?

Answer 15

2 1/2 years

Question 16

What is the last succedaneous tooth to erupt?

Answer 16

Maxillary canine

Question 17

T/F: At age 10, the patient is likely to have all permanent canines.

Answer 17

False

Mandibular canines only