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Classic Lit > Anatomy > Flashcards

Anatomy Flashcards

1
Q

Three types of mucosa

A

Masticatory, Lining, specialized (dorsum of tongue)

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2
Q

Karring & Loe (1970)

A

Stippling is formed by invaginations of rete pegs into the underlying CT (predictor of health, absence not necessarily disease)

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3
Q

Ainamo & Loe (1966)

A

Free gingival groove only present in 1/3 of cases

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4
Q

Bowers 1963

A

Attached gingiva width ranges from 1-9 mm
Max lateral incisor (widest); md 1st pm (narrowest)

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5
Q

Tests to find MGJ

A
  1. Schiller’s iodide (stains glycogen in lining mucosa)
  2. Probe measurement
  3. Roll technique
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6
Q

Gingival thickness measurement

A

Transgingival probing (0.5mm accuracy) Ronay (2011)
Ultrasonic measurement (Eager 1996)
Probe visibility:
Kan (2010; if visible then <1mm, if not visible then >1mm.
Rasperini 2015: colored probe

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7
Q

Lang & Loe (1972)

A

32 dental students
<2mm KT resulted in inflammation
>2 mm KT resulted in health

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8
Q

Wennstrom & Lindhe (1983)

A

Dog study
Careful plaque control resulted in health regardless of KT or AG

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9
Q

Cortellini & Bissada (2018) AAP World Workshop

A

KT is NOT needed to maintain health
Ideally 1mm AG, 2mm KT

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10
Q

Magnusson (1983)

A

Junctional epithelium is resistant to microbial challenge

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11
Q

Oral epithelium layers

A

Deepest to most superficial
Stratum basale
Stratum spinosum
Stratum granulosum
Stratum corneum

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12
Q

at 2017 AAP, biologic width replaced with

A

Supracrestal tissue attachment
Junctional epithelium + supracrestal connective tissue attachment

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13
Q

Gargiulo (1961)

A

Sulcular depth: 0.69 mm
Epithelial attachment (0.97mm; most variable)
CT attachment (1.07mm; most consistent)

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14
Q

Armitage (1977)

A

In health and gingivitis, perio probe penetrates until apical 1/3 of JE
In periodontitis, probe extends to the coronal 1/3 of the CT

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15
Q

Basement membrane collagen type

A

Composed mainly of type IV collagen

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16
Q

Basement membrane layers

A

Lamina lucida: contacts epithelial cells of stratum basale via hemidesmosomes
Lamina densa: attached to CT via anchoring fibrils (type VII collagen)

17
Q

CT (lamina propria) composition

A

5% cells
35% blood vessels and nerves
60% fibers

18
Q

Lamina propria layers

A

papillary layer: projections between rete pegs
reticular layer: thick fibers continuous with periosteum

19
Q

Cell percentages in CT

A

35% mast cells
65% fibroblasts

20
Q

Fibroblasts produce

A

collagen fibers predominantly
reticulin fibers
oxytalan fibers
elastic fibers

21
Q

Gingival fiber types

A

Dento-gingival
Alveolo-gingival
Dento-periosteal
Circular
Transseptal (for stability and alignment)

22
Q

Extracellular matrix of CT composition

A

glycosaminoglycans
proteoglycans
collagenous and non-collagenous proteins

23
Q

GAG types

A

Hyaluronic acid (simplest GAG, no sulfate)
Dermatan sulfate: coagulation and wound healing; most abundant gingival GAG (61%)
Chondroitin sulfate: most abundant GAG in bone and cementum (94%)
Heparan sulfate: production of FGF
Keratan sulfate: aggregate with chondroitin sulfate

24
Q

Karring (1975)

A

underlying CT provides the genetics required for formation of overlying keratinized gingival epithelium.

25
Q

Cells of PDL

A

fibroblasts, osteoblasts, cementoblasts, osteoclasts, mesenchymal cells

26
Q

PDL collagen types

A

80% type 1, 20% type 3
mean width is 0.25 mm

27
Q

PDL fiber types

A

Alveolar crest
Horizontal
Oblique (most abundant)
Apical
Interradicular

28
Q

Hydroxyapatite percentage in cementum

A

65%

29
Q

Schroeder (1986) cementum classification

A

Acellular afibrillar: coronal/at CEJ, no collagen fibers, unknown fxn

Acellular extrinsic: cervial to mid root, sharpey’s fibers, primary tooth anchor

Cellular intrinsic: apical 1/3 of root and furcations, intrinsic fibers, reparative fxn

Cellular mixed: apical 1/3 to 1/2 of root and furcations, both fibers, reactive to force

30
Q

Zander & Hurzeler (1958)

A

Apex contains thickest portion of cementum, coronal aspect is thinnest

31
Q

Kerr (1961)

A

Cementum deposition is a continuous process

32
Q

Nyman (1988)

A

Complete removal of diseased cementum is NOT needed in periodontal treatment

33
Q

Biagini (1992)

A

CT cells cannot adhere to previously exposed cementum

34
Q

Organic and inorganic composition of alveolar bone

A

Organic: 95% type 1 collagen; 5% type V collagen

Inorganic: mostly hydroxyapatite (60-70%)

35
Q

Blood supply to periodontium and teeth

A

Infraorbital A
Superior alveolar A
Palatine A
Mandibular A
Facial A
Buccal A
Sublingual A
Mental A

Classic Lit (12 decks)

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