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Cementum Flashcards

(44 cards)

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1
Q

A mineralized non-homogenous connective tissue

A

Cementum

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2
Q

Cementum covers the entire dentin of the root from (1) _____ to (2) _____

A
  1. Cemento-enamel junction
  2. Apex
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3
Q

What tissue is considered as a component of both tooth and periodontium?

A

Cementum

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4
Q

It is where the tooth is embedded

A

Periodontium

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5
Q

The periodintium consists of what structures (3)?

A
  1. bone
  2. PDL
  3. Cementum
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6
Q

TRUE or FALSE: cementum is thicker on the apical part of the root

A

TRUE

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7
Q

What are the 4 physical characteristics of cementum?

A
  1. Contains least minerals compared to enamel, dentin, and bone
  2. Light yellow in color
  3. Has no luster
  4. Permeable to varying degrees
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8
Q

Composition of organic matrix (3)

A
  1. Collagen
  2. Chondroitin sulfate
  3. Water
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9
Q

Composition of inorganic/mineral components

A

Hydroxyapatite crystals

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10
Q

Functions of cementum

A
  1. Anchor teeth to the alveolus
  2. Seals surface of the root dentin; covers ends of open dentinal tubules
  3. Contribute to the continuous vertical eruption of teeth
  4. Regulates periodontal space
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11
Q

It is the bone socket where the tooth is embedded

A

Alveolus

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12
Q

TRUE or FALSE: the alveolar bone still exist in the absence of teeth

A

FALSE

Answer: alveolar bone exist in the presence of teeth

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13
Q

What type of eruption is vertical eruption? passive or active eruption?

A

Passive eruption

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14
Q

Acellular afibrillar cementum is formerly called as _____

A

Coronal cementum

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15
Q

It contains neither cementocytes nor collagen fibrils

A

Acellular afibrillar cementum

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16
Q

It is the primary / fibrous cementum

A

Acellular extrinsic fiber cementum

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17
Q

Where is the sharpeys fiber embedded?

A

In the cementum and alveolar bone

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18
Q

It is the outermost layer of cementum

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A

Acellular extrinsic fiber cementum

19
Q

It is the secondary cementum

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A

Cellular mixed fiber cementum

20
Q

A type of cementum that has both extrinsic sharpey’s’ fiber and intrinsic bundles of collagen fibers

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A

Cellular mixed fiber cementum

21
Q

This type of cementum contains cementocytes and intrinsic bundles of collagen fibrils

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A

Cellular intrinsic fiber cementum

22
Q

It is a thin, non-cellular amorphous layer of hard tissue and it is the first layer deposited

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A

Intermediate cementum

23
Q

It is the growth lines of cementum same with transverse striations in enamel

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A

Incremental lines of salter

24
Q

What cells forms the cementum

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A

Cementoblasts

25
Are round, plump cells with basophilic cytoplasm
Active cementoblasts
26
Cells with closed or hematoxyphilic nucleus and little cytoplasm
Resting cementoblasts
27
Contains trapped cells
Cementocytes
28
The presence of this cell represent pathological conditions
Cementoclast
29
What is hypercementosis?
Excessive amount of cementum formed
30
It is the overgrowth of cementum found in functional teeth
Cementum hypertrophy
31
It is the overgrowth of cementum found in non-functioning teeth
Cementum Hyperplasia
32
It is the union of cementum and dentin with alveolar bone
Ankylosis
33
What happens to the coronal and apical part in passive eruption?
Coronal part = lost / nawawala Apical part = nadadagdagan
34
What is active eruption?
Eruption of the teeth from the bony crypt
35
TRUE or FALSE: cementum has the ability to resorb
TRUE
36
What causes cementum resorption?
pathologic causes: - includes presence of infections, tumors, and fast tooth movement
37
It is the extrinsic collagen fibrils of acellular extrinsic fiber cementum
Sharpey's fibers
38
Epithelial rests of malaise may result to the following (3):
1. Enamel pearl 2. Cementicles 3. Cysts ot tumors
39
Type of cementum that is formed only during reparative process and are exclusive products of cementiblasts
Cellular intrinsic fiber cementum
40
TRUE or FALSE: intermediate cementum is composed of collagen
FALSE It is composed of enamelin (protein of enamel) instead of collagen
41
Cementum matrix consists of normal assembly of (3)
1. Proteoglycans 2. Glycoproteins 3. Phosphoproteins
42
What are the 2 types of cysts?
1. radicular cysts 2. Dentigerous cysts
43
Are localized, flat, or broadly knob-shaped cemental thickening on the root surface
Enamel pearl
44
Are calcific, spherical bodies made up of concentric shells of acellular extrinsic fiber cementum
Cementicles

OHE (5 decks)

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