6 - Permanent Dentition

Question 1

Does primary or permanent detention have more variability for tooth eruption sequence?

Answer 1

Permanent

Question 2

Are boys or girls ahead in calcification?

Answer 2

Girls

Question 3

Are girls or boys ahead in 3rd molars?

Answer 3

Boys

Question 4

Girls are how far ahead of boys in the eruption pattern?

Answer 4

5-6 months

Question 5

In the upper arch, what teeth erupt last

Answer 5

Canines

Question 6

When will 3rd molars erupt?

Answer 6

Around 18 years

Question 7

Is timing consistent within a dentition?

Answer 7

Yes

Question 8

Children who erupt any tooth early or late, tend to acquire

Answer 8

Other teeth early or late

Question 9

Ideally, both sides of the mouth should have tooth eruptions at the

Answer 9

Same time

Question 10

Maxillary canines usually come in _______ because the arch is too small

Answer 10

Labially

Question 11

Maxillary canines usually come in labially because?

Answer 11

Arch is too small

Question 12

What are the most commonly impacted teeth after the 3rd molars?

Answer 12

Maxillary canines

Question 13

What local influences will “hasten” permanent tooth eruption?

Answer 13

1. Localized pathosis such as abscesses
2. If primary tooth is extracted during active eruption of permanent tooth

Question 14

What local influences will “slow” permanent tooth eruption?

Answer 14

If the primary tooth is extracted before active eruption of permanent tooth

Question 15

Vertical alveolar process growth leads to the maxilla and mandible going what?

Answer 15

1. Maxilla gets larger
2. Mandible gets smaller

Question 16

Does the maxillary arch grow at the occlusal plane in vertical alveolar process growth or not?

Answer 16

It grows

Question 17

What can cause arch width changes?

Answer 17

Dental eruption
Wider placement of the permanent teeth
Apposition of alveolar bone to support teeth

Question 18

Are there increases in the “Intercanine distance” in either the maxilla or mandible after the eruption of permanent canines?

Answer 18

No

Question 19

Growth of the arch width __________ after the eruption of the permanent canines

Answer 19

Does not change

Question 20

Mandible intercanine distance is _________ during mixed dentition but _______ during permanent dentition

Answer 20

greatest
plateaus

Question 21

Maxilla intercanine distance is ________ during mixed dentition but ______ during permanent dentition

Answer 21

The same
Slightly decreases

Question 22

The maxillary arch increases when?

Answer 22

During growth spurts
During eruption of incisors
During eruption of cuspids

Question 23

Is the maxilla or mandible easier to expand?

Answer 23

Maxilla

Question 24

Are there maxillary arch perimeter change differences between sexes?

Answer 24

No

Question 25

In the maxillary arch, what factors limit loss in the arch perimeter?

Answer 25

Less leeway space Greater labial angulation of incisors Greater increases in arch lengths

Question 26

What arch do we usually have to extract teeth in order to make more space?

Answer 26

Mandibular arch

Question 27

Does the maxillary arch or mandibular arch have ‘MORE’ leeway space?

Answer 27

Mandibular arch

Question 28

Does the maxillary arch or mandibular arch have ‘LESS’ leeway space?

Answer 28

Maxillary

Question 29

In primary dentition, the curve of spee is?

Answer 29

Flat

Question 30

In permanent dentition, the curve of spee is

Answer 30

Curved

Question 31

Is extraction of 3rd molars to avoid orthodontic relapse a strong correlation?

Answer 31

No

Question 32

Extraction of 3rd molars to avoid orthodontic relapse association or correlation?

Answer 32

Association