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DMD 1 Sem 1 > Perio > Flashcards

Perio Flashcards

1
Q

In tooth dvlpment, dental papilla gives rise to__________
it forms at______stage

A
  • dental pulp & odontoblast
  • cap stage
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2
Q

Neural Crest Cells derive into________

A

Dental papillia & follicle

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3
Q

T/F, stabillization of dental arch a fxn of periodontium ?

A

T

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4
Q

Tooth start erupting once_____of root length is completed ?

A

2/3

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5
Q

Mucogingival junction seperates____________?

A

ATTACHED gingiva & alveolar mucosa

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6
Q
  • Gingival col connects which 2 things ?
  • it is (keratinized/non-keratinized)
A
  • Labial & Lingual id papilla
  • Non keratinized
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7
Q

What are the 3 parts of Gingival Epithelium

A

Oral (outer) epithelium, Sulcus epithelium, Junctional epithelium

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8
Q

Periodontium consist of which 4 parts ?

A

gingiva, periodontal ligament, root cementum, alveolar bone proper

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9
Q

Is alveolar mucosa part of gingiva ?

A

No

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10
Q

Gingival col (is/is not) keratinized

A

is not

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11
Q

Gingival collagen fibers are type____&_____

A

1 & 4

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12
Q
  • What is the fxn of gingival epithelium ?
  • what is the main cell type
A
  • protect deeper structures
  • kerotinocyte
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13
Q

What are the 3 levels of keratinization ?

A

ortho, para and nonKeratinized

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14
Q

Which level of keratinization undergo complete keratinization

A

ortho

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15
Q

In parakeratinization epithelium, stratum corneum retains___________

A

pyknotic nuclei

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16
Q
  • Gingival epithelium contains which 4 types of cells ?
  • Which cell is asso w/ sense of light touch discrimmination ?
A
  • Keratinocytes, Langerhan cells, Melanocytes, Merkel Cells
  • Merkel cells
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17
Q

Is junctional epithelium a keratinizing epithelium ?

A

No

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18
Q

Is sulcular epithelium a keratinizing epithelium ?

19
Q

Is oral epithelium a keratinizing epithelium ?

20
Q

________epithelium sits between internal & external basal lamina ?

A

Junctional

21
Q

-________of junctional epithelium is firmly attached to enamel surface @________(level), which forms epithelial barrier against________

A

Internal basal lamina, CEJ level, plaque bacteria

22
Q

The turnover time for junctional epithelium cells is_______days

23
Q

Junctional epithelial cells probably have_______property which is also found in macrophages

24
Q

What is the definition of root cementum ?

A

mineralized but heterogeneous CONNECTIVE TISSUE

25
Q
  • Organic content of cementum__________
  • Inorganic content of cementum__________
A
  • 50-55% collagen type 1 + glycoprotein
  • 45-65% hydroxyapatite
26
Q

Cementum or dentine is softer

27
Q

Thickness of cementum:
- coronally=_______um
- apically=_______um

A
  • 16-60
  • 150-200
28
Q

T/F, cementum’s AA composition is similar to bone and the same between coronal & apical cementum ?

A

F, similar to bone but differ between coronal & apical

29
Q

Cementum shows lifelong deposition/apposition in (coronal/apical) area ?

30
Q

Cementum inc in thickness up to___times in 60 years ?

31
Q

Root cementum contains which 3 types of cells ?

A

Cementoblast, cementoclast, fibroblast (specialized)

32
Q
  • Acellular Afibrillar Cementum (AAC) is located over_______
  • its main component is________
A
  • Over cervical enamel @CEJ
  • GlycosAminoGlycans
33
Q
  • Acellular Extrinsic Fiber Cementum (AEFC) is located________
  • It is mainly formed by________
A
  • coronal 2/3 of root
  • fibroblast & cementoblast
34
Q
  • Cellular Mixed-fiber Stratified Cementum (CMSC) is found in_________
  • It is formed by__________
  • It contains what kind of cells ?
A
  • apical portion of root & furcations
  • Conversion of acellular to cellular by unknown factors after 2/3 of roots completed forming
  • Cementoblast & Cementocytes
35
Q
  • Cellular Intrinsic Fiber Cementum (CISC) is located in________
  • it contains what kind of cells ?
A
  • root surface undergoing repair
  • Cementocytes ONLY
36
Q

Sharpey’s fibers are made of which 3 types of collagen fibers ?

37
Q

Sharpey’s fibers are bundles of collagen fibers connecting____________

A

Cementum to periosteum of alveolar bone

38
Q

Sharpey’s fibers go in (one/different) directions to________

A

different, distribute the force

39
Q

Occlusal forces are take up by which type of sharpey’s fibers ?

A

Oblique ONLY

40
Q

The scallop bone margin is more pronounced in_______teeth

41
Q
  • Normal distance from Scallop margin to CEJs in VESTIBULAR is______mm, & in LINGUAL is_______mm
A

(VESTIBULAR) 1-2.4mm, (LINGUAL) 1.5mm

42
Q
  • Thickness of alveolar bone proper=_______mm
  • Alveolar bone proper anchors_______
A
  • 0.1-0.4
  • Sharpey’s fiber

DMD 1 Sem 1 (9 decks)

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