Development and eruption

Question 1

Which population often has shovel shaped incisors?

Answer 1

Asian/Native Alaskan Populations

Question 2

What does chronological eruption indicate?

Answer 2

Age and Development of Dentition

Question 3

Is there a lot of variability regarding tooth formation, shape, size, color, etc. that dentists need to adapt to?

Answer 3

Yes

Question 4

If one has less developed enamel, are they more or less susceptible to decay?

Answer 4

More

Question 5

What is enamel hypoplasia?

Answer 5

Pitting/holes due to malformation of enamel

Question 6

What is systemic fluorosis?

Answer 6

Over exposure to fluoride

Question 7

Hypocalcifications can give what?

Answer 7

can give a basis for estimating time of defect

Question 8

True or False: Eruption is only defined as a tooth’s emergence through gingiva

Answer 8

FALSE- also includes until it makes contact with opposing arch

Question 9

When does a tooth stop erupting?

Answer 9

When it makes occlusal contact with opposing tooth

Question 10

What is a synonym for eruption?

Answer 10

Emergence

Question 11

How long does it take for primary dentition to be completed?

Answer 11

2-3 years

Question 12

What is another name for enamel organ?

Answer 12

Dental Organ

Question 13

What is the origin of the developing tooth, that is responsible for initiation of dentin formation, formation of enamel, and establishment of the shape of tooth’s crown?

Answer 13

Enamel organ

Question 14

Does the Enamel Organ develop at the same time and rate?

Answer 14

no

Question 15

Is it possible for some of the primary teeth to have root resorption while the crown is still developing?

Answer 15

Yes

Question 16

What is more resistant to environmental influences, crown or root formation?

Answer 16

both are resistant

Question 17

After the crown development ends, the root development forms the cementum at the cervix which covers what?

Answer 17

Dentin

Question 18

Is the cementum more or less calcified than dentin?

Answer 18

less

Question 19

When is permanent dentition formation fully formed, including third molars?

Answer 19

18-25 years of age

Question 20

What is another name for primary teeth?

Answer 20

Deciduous

Question 21

What stage of dentition can a dentist detect and prevent problems before permanent dentition sets in?

Answer 21

Mixed dentition

Question 22

What week of gestation does teeth start to develop?

Answer 22

6TH WEEK

Question 23

What week does calcification of primary teeth occur?

Answer 23

13-16 weeks

Question 24

When is crown formation complete in primary dentition?

Answer 24

3 to 10.5 months

Question 25

Does primary dentition have more or less space in the mouth?

Answer 25

Typically more space

Question 26

When does the adult dentition start?

Answer 26

12-15 years

Question 27

What is the eruption sequence in primary teeth typically?

Answer 27

Central Incisor, Lateral Incisor, 1st Molar, Canine, 2nd Molar

Question 28

When does mixed dentition begin?

Answer 28

eruption of the mandibular first molar 6-7

Question 29

When does mixed dentition end?

Answer 29

Loss of last primary tooth (11-12)

Question 30

True or false: if you remove a baby tooth prematurely, you may slow down permanent tooth eruption

Answer 30

true

Question 31

When is adult dentition complete?

Answer 31

18-25 years

Question 32

How many lobes/centers of formation does each tooth develop from?

Answer 32

4 or more

Question 33

When canines and incisors of permanent dentition are coming in, are they lingual or labial to the primary roots of corresponding tooth?

Answer 33

lingual to

Question 34

Where do permanent premolars erupt between?

Answer 34

within the bifurcation/trifurcation of primary molars

Question 35

Are the size of teeth genetically determined?

Answer 35

Can be

Question 36

Who have the smallest teeth?

Answer 36

Saami

Question 37

Who have the largest teeth?

Answer 37

Australians

Question 38

What is a CT organ inside of dentition, that is soft tissue, and essential for tooth development, but once the root is completed the ability for blood to pass is restricted?

Answer 38

Dental pulp

Question 39

What happens to the pulp cavity with age?

Answer 39

small and more constricted

Question 40

Where does the gum tissue stop?

Answer 40

cej

Question 41

Is there gum tissue that continues across the attachment at the CEJ?

Answer 41

yes

Question 42

What is the gingiva called that comes up as a collar?

Answer 42

free gingival margin

Question 43

How do you relate the position of the gingival margin and attachment to the CEJ?

Answer 43

periodontal probe

Question 44

What should be the distance between the bone height and the free gingival margin?

Answer 44

3 mm- if its greater, this may be a sign of periodontal disease

Question 45

What is dental age based on?

Answer 45

Formation and eruption of teeth