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BDS2 BAMS oral biology > periodontal tissue > Flashcards

periodontal tissue Flashcards

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1
Q

periodontium

A

tissues surrounding and supporting the teeth

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2
Q

functions of periodontium

A

retain tooth in socket, resist masticatory loads, defensive barrier

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3
Q

cellular cementum

  • characteristics
  • when formed
  • alternative name
  • where found
A

contains cells - cementocytes and no sharpeys fibres therefore no role in tooth attachment
formed 2nd (secondary)
extrinsic fibre cementum
found in apical 1//3

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4
Q

acellular cementum

  • characteristics
  • when formed
  • alternative name
  • where found
A

no cells, contains collagen fibres from PDL’s
formed first (primary cementum)
intrinsic fibre cementum
found in cervical 2/3

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5
Q

residual ridge

A

formed when teeth are lost and alveolar bone is resorbed

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6
Q

what arteries supply the gingiva

A

lingual and palatine

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7
Q

what arteries supply the periodontal ligaments

A

superior and inferior alveolar arteries

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8
Q

true periodontal ligament

A

attaches tooth to jaw

transmits biting forces to alveolar bone

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9
Q

what is the main PDL fibres that support the teeth and assist load bearing

A

collagen fibres - types one and three mainly

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10
Q

what are the 5 subgroups of alveolo-dental ligaments in relation to the PDL principle fibre groups

A 
alveolar crest 
horizontal 
oblique 
apical 
interradicular (in multi -rooted teeth)
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11
Q

what is the subgroup of interdental ligaments in relation to PDL principal fibre groups

A

transeptal fibres

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12
Q

what are the 4 subgroups of gingival fibre groups

A

circular
dento-periosteal
dento gingival
alveolo gingival

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13
Q

what separates attached gingiva and free gingiva

A

the free gingival groove

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14
Q

what separates attached gingiva and alveolar mucosa

A

the mucogingival line

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15
Q

how are the teeth attached to the gingiva

A

junctional epithelium via hemidesmosomes

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16
Q

examples of intrusive forces

A

mastication, swallowing, parafunction

17
Q

parafunction

A

abnormal function e.g thumb sucking, clenching, grinding

18
Q

examples of extrusive forces

A

orthodontic treatment, sticky foods

19
Q

describe the path of displacement of a tooth as brief forces are applied

A

initial quick displacement (elastic component) that then slows (visco elastic properties of matrix)
process is same in. reverse for force removal
think graph diagram

BDS2 BAMS oral biology (12 decks)

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