Periodontal ligament Flashcards

1
Q

What is it?

A

a specialised fibrous tissue which attaches teeth to the alveolar bone + the surrounding gingivae. it acts as a shock absorber to the teeth during chewing + its main fibres run between the alveolar bone + cementum covering the root of tooth. other fibres run between necks of the teeth + from cementum into surrounding gingivae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Alveolar crest fibres

A

run from alveolar bone to the cementum at the neck of the tooth; prevent tooth movements in (intrusion) + out (extrusion) of the socket, as well as resisting tilting + rotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Horizontal fibres

A

run horizontally from the alveolar bone to the cementum, just below the crest fibres; resist tilting + rotation of the tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Oblique fibres

A

run at an angle from the alveolar bone down to the cementum; prevent intrusion + rotation of the tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Apical fibres

A

occur at the root apex + run between the bone + cementum; prevent extrusion + rotation of the tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Transeptal fibres

A

run between the cementum of adjacent teeth through the interdental region; maintain the gingival attachments between the teeth + therefore their positions in the dental arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Free gingival fibres

A

run from the cervical cementum into the gingival papillae; maintain the gingival cuff around each tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

1

A

its fibres are made up of a protein called collagen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

2

A

they run in various directions, the end result being that the teeth are held in their sockets but can ‘bounce’ under normal chewing forces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

3

A

this prevents tooth fracture + pain during normal occlusal loading + chewing actions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

4

A

when excessive occlusal forces are applied, the resultant pain experienced by the pt tends to stop further overuse from occurring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

5

A

the ligament has a sensory nerve supply which transmits pressure, pain, touch + temperature changes; the ability of the tooth to detect + transmit these sensations is called proprioception

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

6

A

inflammation of the ligament is called periodontitis + occurs during periodontal disease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly