EX1; Practical Images - Enamel Tissue and Amelogenesis

Question 1

Where are these DEJ relationships found

Answer 1

A; scolloped = coronal area
B; smooth = cervical area

Question 2

Answer 2

1. odontoblasts
2. ameloblasts

Question 3

What is this structure?

Answer 3

ameloblasts

Question 4

What are these lines?

Answer 4

growth lines or strae of Retzius

Question 5

What are these lines/ridges?

Answer 5

perikymata

Question 6

What are these ridges?

Answer 6

perikymata

Question 7

Answer 7

1. interrod substance
2. enamel rod
3. enamel sheath

Question 8

What is the difference between the left and the right images of enamel

Answer 8

left = primary
right = permanent

Question 9

Answer 9

1. perikymata
2. lines of Retzius

Question 10

Answer 10

1. interrod substance
2. enamel rod

Question 11

Is this mature or partially mineralized enamel

Answer 11

mature; cross section of the rods

Question 12

Is this mature or partially mineralized enamel

Answer 12

patrially mineralized; cross section of the enamel rods

Question 13

What relationship is this showing

Answer 13

relationship of Retzius lines to the longitudinal rods

Question 14

What is this image depicting

Answer 14

the fish scale appearence of enamel rods

Question 15

Answer 15

1. enamel rod
2. enamel rod sheath
3. interrod substance

Question 16

Answer 16

1. enamel rod
2. interrod substance

Question 17

Answer 17

enamel lamella

Question 18

Answer 18

enamel tufts

Question 19

Answer 19

enamel tufts

Question 20

Answer 20

enamel spindle

Question 21

Answer 21

enamel spindle

Question 22

Answer 22

enamel lamella

Question 23

Answer 23

enamel spindle

Question 24

Answer 24

Hunter-Schreager bands

Question 25

Answer 25

Hunter-Schreager bands

Question 26

Which of these is enamel

Answer 26

top right

Question 27

Which of these relationships is normal

Answer 27

left; most common

Question 28

What do each of these tissues give to amelogenesis

Answer 28

1. ameloblast
2. alkaline phosphatase
3. rich blood supply

Question 29

Answer 29

1. stellate reticulum
2. stratum intermedium
3. inner cells
4. clear layer
5. peripheral calls of dntal papilla

Question 30

Answer 30

yellow arrow = ameloblasts
white arroe = odontoblasts

Question 31

Answer 31

1. dentin
2. DEJ
3. enamel

Question 32

Answer 32

1. inner rodless enamel
2. Tomes’ process

Question 33

Answer 33

1. inner rodless enamel
2. enamel rod
3. Tomes’ process

Question 34

Answer 34

1. paritally mineralized enamel
2. Tomes’ processes

Question 35

Answer 35

1. pulp
2. dentin
3. enamel
4. ameloblasts
5. stratum intermedium
6. stellate reticulum

Question 36

Answer 36

1. stellate reticulum
2. stratum intermedium
3. ameloblasts
4. enamel

Question 37

Answer 37

1. dentin
2. enamel
3. ameloblasts
4. Tomes’ process

Question 38

Answer 38

1. dentin
2. enamel
3. ameloblasts
4. Tomes’ process

Question 39

Answer 39

1. reduced enamel epithelium
2. oral ectoderm

Question 40

Answer 40

1. mature enamel
2. dentin
3. immature enamel
4. pulp

Question 41

Answer 41

1. stellate reticulum
2. stratum intermedium
3. odontoblasts
4. ameloblasts
5. dentin
6. ameloblasts

Question 42

Answer 42

? = reduced enamel epithelium

Question 43

Answer 43

1. preodontoblasts