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Histology > Enamel > Flashcards

Flashcards in Enamel Deck (20):
1

Physical characteristics include:

Hardest tissue in body
Brittle/Inelastic
Semipermeable

2

Chemical Properties include:

1.5% H20
2.5% Organic Material
96% Inorganic Material

3

The Organic Material of enamel consist of ______ and _____

Amelogenins
Enamelins

4

______ are present in early enamel proteins

Amelogenins

5

______ are present in mature and more mineralized enamel

Enamelins

6

Enamel Rods course form the ______ and are composed of ______

DEJ
Individual apatite crystals

7

_____ is organic material that partial surrounds each rod

Rod Sheaths

8

Ename Rod diameter is _____ at surface than at DEJ

thicker

9

Areas in which rod bundles intertwine is called; rods twisted around each other

Gnarled Enamel

10

Alternating light and dark bands caused by changes in prism direction

Hunter-Schreger Bands

11

Are formed from incremental pattern of enamel rod formation

Incremental Lines of Retzius

12

Accentuated Lines of Retzius

Neonatal Lines

13

Incremental lines may be

Hyper/Hypomineralized

14

Shallow furrows on enamel surface that run horizontally across face of crown

Perikymata

15

Perikymatas are formed where _____ meet the enamel surface

Incremental Lines

16

Lines that appear as cracks, filled with enamel proteins and organic debris

Lamellae

17

Ubiquitous organic deposits on tooth surface

Salivary Pellicle

18

Plaque readily forms on which surface structure

Salivary Pellicle

19

Hypomineralized areas projecting away from DEJ, caused by faulty removal of organic matrix

Enamel Tufts

20

Odontoblastic process that renin in enamel, occur more often in cuspal areas

Enamel Spindles