Eruption Patterns

Question 1

Mandibular teeth are shed prior to their maxillary occlusal buddies. T or F

Answer 1

True

Question 2

What is the one exception to the “mandibular teeth shed before maxillary occlusal buddies”?

Answer 2

PRIMARY 2nd molars - generally both maxillary and mandibular shed at the same time

Question 3

What is the sequence of shedding for the mandibular primary teeth?

Answer 3

Anterior first –> Posterior Lasts (sometimes molars before canines)

Question 4

What is the sequence of shedding for the maxillary primary teeth?

Answer 4

Anterior first
Posterior
** the FIRST molars fall out before canines

Question 5

What is the sequence of PRIMARY teeth eruption?

Answer 5

Mandibular Central incisors
Maxillary Central incisors
Mandibular lateral incisors
Maxillary lateral incisors
First molars
Canines
Second molars

Question 6

When do the PRIMARY MANDIBULAR central incisors erupt?

Answer 6

6 - 8 months

Question 7

When do the PRIMARY MAXILLARY lateral incisors erupt?

Answer 7

1 year

Question 8

When do the PRIMARY MAXILLARY central incisors erupt?

Answer 8

10 months

Question 9

When do the PRIMARY MANDIBULAR lateral incisors erupt?

Answer 9

13 months

Question 10

When does the PRIMARY first molar erupt?

Answer 10

16 months

Question 11

When does the PRIMARY MAXILLARY canines erupt?

Answer 11

19 months

Question 12

When does the PRIMARY MANDIBULAR canines erupt?

Answer 12

20 months

Question 13

When do the PRIMARY MANDIBULAR second molars erupt?

Answer 13

27 months

Question 14

When do the PRIMARY MAXILLARY second molars erupt?

Answer 14

29 months

Question 15

At what age does the child have all the primary teeth

Answer 15

2.5 -3 years old

Question 16

What is the sequence of eruption of the PERMANENT teeth?

Answer 16

1st molars
Mn central
Mx central
Mn lateral
Mx Lateral
Mn canine
Mx 1st premolar
Mx 2nd premolar
Mn 1st premolar
Mn 2nd premolar
Mx Canine
Mn 2nd molar
Mx 2nd molar
3rd molars

Question 17

All permanent premolars erupt prior to the maxillary canine eruption?

Answer 17

True!

Question 18

When does the PERMANENT 1st molar erupt?

Answer 18

6 yrs

Question 19

When does the PERMANENT MAXILLARY centrals erupt?

Answer 19

7 - 8 yrs

Question 20

When does the PERMANENT MANDIBULAR centrals erupt?

Answer 20

6-7 yrs

Question 21

When does the PERMANENT MANDIBULAR laterals erupt?

Answer 21

7 -8 yrs

Question 22

When does the PERMANENT MAXILLARY laterals erupt?

Answer 22

8 - 9 years

Question 23

When does the PERMANENT MANDIBULAR canines erupt?

Answer 23

9 - 10 years

Question 24

When does the PERMANENT MAXILLARY 1st premolar erupt?

Answer 24

10 yrs

Question 25

When does the PERMANENT MAXILLARY 2nd premolars erupt?

Answer 25

10 - 11 years

Question 26

When does the PERMANENT MANDIBULAR 1st premolars erupt?

Answer 26

10 -11 years

Question 27

When does the PERMANENT MANDIBULAR 2nd premolars erupt?

Answer 27

11 - 12 years

Question 28

When does the PERMANENT MAXILLARY canines erupt?

Answer 28

11 - 12 years

Question 29

When does the PERMANENT MAXILLARY 2nd molar erupt?

Answer 29

12 - 13 years

Question 30

When does the PERMANENT MANDIBULAR 2nd molars erupt?

Answer 30

12- 13 years

Question 31

When does the PERMANENT 3rd molars erupt?

Answer 31

17 - 21 years

Question 32

How many permanent vs primary teeth does a 7 year old have?

Answer 32

Permanent: 4 (first molars) 2 (mn centrals) 2 (mx centrals) 2 (mn laterals)

Possibly 10 permanent
Possibly 14 primary

Question 33

How many permanent vs primary teeth does a 6 years old have?

Answer 33

4 permanent

20 primary

Question 34

How many permanent vs primary teeth does a 9 year old have?

Answer 34

Possibly 14 permanent (1st molars, centrals, laterals, mn canines)
Possibly 10 primary

Question 35

How many permanent vs primary teeth does a 12 year old have?

Answer 35

Possibly 28 permanent

No primary