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Histology > Enamel > Flashcards

Enamel Flashcards

1
Q

Physical characteristics include:

A

Hardest tissue in body
Brittle/Inelastic
Semipermeable

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2
Q

Chemical Properties include:

A

1.5% H20
2.5% Organic Material
96% Inorganic Material

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3
Q

The Organic Material of enamel consist of ______ and _____

A

Amelogenins

Enamelins

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4
Q

______ are present in early enamel proteins

A

Amelogenins

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5
Q

______ are present in mature and more mineralized enamel

A

Enamelins

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6
Q

Enamel Rods course form the ______ and are composed of ______

A

DEJ

Individual apatite crystals

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7
Q

_____ is organic material that partial surrounds each rod

A

Rod Sheaths

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8
Q

Ename Rod diameter is _____ at surface than at DEJ

A

thicker

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9
Q

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

A

Gnarled Enamel

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10
Q

Alternating light and dark bands caused by changes in prism direction

A

Hunter-Schreger Bands

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11
Q

Are formed from incremental pattern of enamel rod formation

A

Incremental Lines of Retzius

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12
Q

Accentuated Lines of Retzius

A

Neonatal Lines

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13
Q

Incremental lines may be

A

Hyper/Hypomineralized

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14
Q

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

A

Perikymata

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15
Q

Perikymatas are formed where _____ meet the enamel surface

A

Incremental Lines

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16
Q

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

A

Lamellae

17
Q

Ubiquitous organic deposits on tooth surface

A

Salivary Pellicle

18
Q

Plaque readily forms on which surface structure

A

Salivary Pellicle

19
Q

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

A

Enamel Tufts

20
Q

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

A

Enamel Spindles

Histology (16 decks)

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