tooth morphology - elcock :)

Question 1

what is the outer surface at the front of the mouth/adjacent to lips

Answer 1

labial

Question 2

outer surface of posterior teeth

Answer 2

buccal

Question 3

inner surface of teeth upper

Answer 3

palatal

Question 4

where teeth meet

Answer 4

occlusal

Question 5

inner surface of teeth lower

Answer 5

lingual

Question 6

closer to the midlien

Answer 6

mesial

Question 7

further from midline

Answer 7

distal

Question 8

top surface of front teeth

Answer 8

incisal

Question 9

shape of permanent incisors

Answer 9

chisel shape

Question 10

mesial angle of incisors

Answer 10

90

Question 11

distal shape of incisors

Answer 11

more rounded

Question 12

how long can canines roots be

Answer 12

3x crown size

Question 13

how many cusps are on the pre molars

Answer 13

2 cusps on occlusal surface

unqual size

Question 14

which is the largest cusp on pre molars

Answer 14

buccal

exept upper 5 equal

Question 15

how many roots do pre molars have

Answer 15

1

except for upper 4 (2)

Question 16

what is the crown outline for upper premolars

Answer 16

oval

Question 17

what is the crown outline for lower premolars

Answer 17

round

Question 18

shape of lower permanent molars

Answer 18

retangular

Question 19

shape of upper permanent molars

Answer 19

rhomboid/diamoind

Question 20

how many roots do lower molars have

Answer 20

2

Question 21

how many roots do upper molars have

Answer 21

3

Question 22

primary vs permanent teeth

Answer 22

primary:
smaller
more bulbous 
larger pulp chamber
whiter (less mineralsied 92%)

Question 23

what is different about tooth D compared to permanent dentiton 4

Answer 23

mix of premolar and molar

not like any other tooth

Question 24

what can be seen over time on primary teeth

Answer 24

attrition
wearing of teeth due to lower mineralisation
root resporption

Question 25

primary molar roots are...

Answer 25

flared

Question 26

primary dentition tooth D feature

Answer 26

large tubercle of Zuckerkandl

Question 27

pulp morphology and dentine permanent vs primary

Answer 27

pulp is larger in primary | therefore dentine layer is thinner

Question 28

tooth form when tooth breaches the mucosa

Answer 28

roots half formed | crown partially out

Question 29

how long does it take to form a tooth

Answer 29

9 yrs

Question 30

when the crown is formed what is it found within before eruption

Answer 30

crypt

Question 31

how long does it take to form a primary tooth

Answer 31

30 months

Question 32

what is the primary order of eruption

Answer 32

``` A B D C E ```

Question 33

what does primary develpment time range from

Answer 33

23-44 months

Question 34

when are roots complete in primary teeth

Answer 34

after eruption 18 months

Question 35

when does crown formation complete after birth

Answer 35

3mn to 1 year after birth

Question 36

when does crown calification start

Answer 36

3mnth to 6 mnth in utero

Question 37

how does resorption of a tooth occur

Answer 37

roots resorb cementum and dentine resorb mobilty of the tooth increases PDL breaks down

Question 38

eruption phases

Answer 38

pre pre functional post

Question 39

mechanisms of erution

Answer 39

root growth bone deposition pupal cell proliferation periapical hydrostatic pressure

Question 40

what erupt first upper or lower?

Answer 40

lower teeth first

Question 41

eruption order and age

Answer 41

``` 6 - 6yrs old 1 - 7yrs old 2 - 8yrs old 4 - 9yrs old 5 - 10yrs old 3 - 11yrs old 7 -12yrs old 8- 18yrs old ```

Question 42

what is different about tooth 3

Answer 42

does not erupt until roots are almost fully formed

Question 43

how long does it take for crown to form

Answer 43

3 yrs

Question 44

how long does it take for roots to form

Answer 44

6 yrs

Question 45

how to work out when crown frmation is complete

Answer 45

eruption age - 3 yrs

Question 46

how to work out when crown calcification starts

Answer 46

eruption age - 6yrs

Question 47

how to work out when roots are formed

Answer 47

eruption age + 3 yrs

Question 48

eruption dates between females and males

Answer 48

females before males

Question 49

what are teeth befroe birth called

Answer 49

natal teeth

Question 50

eruption date ranges for teeth

Answer 50

6 mnths

Question 51

how long are primary teeth in the mouth for

Answer 51

5-6yrs

Question 52

what appears black in radiography

Answer 52

air/space | ie radiolucent

Question 53

what block x rays

Answer 53

teeth bone fillings ect