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Oral Physio > Physiology Of Teeth > Flashcards

Physiology Of Teeth Flashcards

1
Q

-Most calcified and brittle substance in human body
-yellow to grayish white
-semi translucent

A

Enamel

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2
Q

Enamel Inorganic and organic material?

A

96-98% inorganic
2-4% organic

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3
Q

-Incremental growth of enamel
-marks primary calcification of enamel

A

Incremental line of retzius

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4
Q

Represent line of retries as they meet at the surface of enamel

A

Perikymata

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5
Q

More pronounce incremental lines

A

Neonatal lines

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6
Q

-crosses band of retzius
-appositional growth of enamel 4um/day

A

Transverse striation

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7
Q

Alternate light and dark bands

A

Hunter schreir bands

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8
Q

-Originate from DEJ
-lateral spread of caries

A

Enamel tufts

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9
Q

Cracks on surface of enamel
Pathway for bacteria to penetrate the enamel

A

Enamel lamellae

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10
Q

-Extension of dentinal tubules that penetrates DEJ
-DEJ hypersensitivty

A

Enamel spindles

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11
Q

-scalloped for attachement

A

Dentino- enamel juncton

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12
Q

Mutation of FAM83H Gene

A

Amelogenesis imperfecta

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13
Q

Deficiency in quantity

A

Enamel hypoplasia

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14
Q

Deficiency in quality

A

Enamel hypocalcification

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15
Q

-Bult of the tooth
-yellowish intrinsic color
-provides flexibility

A

Dentin

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16
Q

Dentin Inorganic and organic material?

A

70% inorganic
Hydroxyapatite crystal
30% organic
Collagen type1

17
Q

Covers dentinal tubules

A

Peritubular dentin

18
Q

Main bulk locate between tubules

A

Intertubular dentin

19
Q

Extension of odontoblst

A

Odontoblastic process

20
Q

Contains dentinal fluid

A

Periodontoblastic space

21
Q

From plexus of raschkow

A

Intertubular nerve

22
Q

From plexus of raschow

A

Intertubular nerve

23
Q

From plexus of raschow

A

Intertubular nerve

24
Q

Secretory activity of dentin

A

Incremental lines of von ebner

25
Q

Accentuation of growth lines

A

Contour lines of owen

26
Q

Non fusion of globules of calospherits

A

Interglobular dentin

27
Q

Looping of terminal tubules

A

Granular layer of tomes

28
Q

-from ontogenesis until apical foramen formation

A

Primary dentin

29
Q

First layer,outer layer parallel to DEJ

A

Mantle dentin

30
Q

Bulk of dentin mass,surrounds the pulp chamber

A

Circumpubertal dentin

31
Q

Slower deposition after root formation has completed

A

Secondary dentin

32
Q

Formed in response to outside or noxious stimuli

A

Tertiary dentin

33
Q

From existing odontoblast

A

Reactionary dentin

34
Q

-new layer of dentin formed
-found in pulp

A

Predentin/dentinoid

Oral Physio (3 decks)

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