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Bds4 Paeds > Paeds Trauma > Flashcards

Paeds Trauma Flashcards

1
Q

What is recorded on a trauma stamp?

A

TTP
Colour
Sinus
Mobility
Percussion
Sensibility
Radiograph

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2
Q

What does TTP test?

A

PDL inflammation

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3
Q

What is a favourable radiograph in outcome post trauma

A

Continued root development
No pathology

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4
Q

What colours might a traumatised tooth be?

A

Pink
Yellow
Grey/brown

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5
Q

What causes a pink appearance of a tooth?

A

Transient, happens immediately after
Fresh bleeding

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6
Q

What causes a yellow appearance of tooth?

A

This happens months post trauma
Caused by the laying down of tertiary dentine - sclerosis of the canal (pulp canal obliteration)

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7
Q

What causes grey/ brown discolouration?

A

Happens within weeks of tooth becoming non vital
Due to a build up of blood products (the tooth is non-vital so no cells to clear it out)

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8
Q

What can cause increased mobility?

A

Damage to PDL, root resorption (creating an unfavourable crown root ratio)

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9
Q

What is a favourable crown root ratio?

A

1:2

1:1 is minimum for adequate tooth support

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10
Q

What causes decreased mobility/ no mobility

A

Ankylosis - replacement resorption.

Severe damage to PDL, PDL is replaced by bone which also replaces adjacent dentine and cementum.

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11
Q

What might a dull percussion note suggest?

A

Root fracture
Ankylosis

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12
Q

What does sensibility testing test?

A

Tests the nerve supply of the tooth

Note- tooth may not have a vital nerve (negative to sensibility tests) but may still have a vital blood supply.

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13
Q

What are the 4 Ypres of root resorption?

A

External (inflammatory)
Internal (inflammatory)
Replacement resorption
Surface (external)

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14
Q

What is external inflammatory root resorption?

A

This is progressive and is initiated by PDL damage (trauma). The pulp becomes non vital and toxins reach the external root surface, resulting in a moth like appearance (on radiograph) on root surface.
Straight, tram line walls of the pulp are still visible.

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15
Q

What is internal inflammatory root resorption?

A

This is progressive and initiated by pulp necrosis
Causes ballooning of the pulp walls (on radiograph) as infected material from necrotic pulp propagates resorption.
External root surface remains in tact

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16
Q

What is replacement resorption?

A

Ankylosis
No PDL
Causes infraoccluded teeth (tooth stays in the same position as teeth around erupt).

17
Q

What is a treatment option for an ankyloses tooth?

A

Decoronate and bury the root
This maintains position of gingival margin for future bridge/ implant

18
Q

What is surface external resorption?

A

This resorption stops when the excessive force is removed eg. Fixed ortho/ canine erupting on top of lateral.
Causes blunting appearance of root tips.

19
Q

What is the treatment for external and internal inflammatory resorption?

A

Remove the pulp tissue and fill with CaOH for 4-6 weeks

20
Q

What is the max length of time CaOH can be placed in canal for and why?

A

Max 6 weeks
PH 10 causes the tooth to become brittle and can snap.

21
Q

What is an ‘eyebrow sign’ on a radiograph?

A

A dark shadow on X-ray in the orbit which suggest the presence of gas, suggesting a fracture.

22
Q

What are the 2 radiographic views required for midface trauma?

A

OPG and PA mandible
2 angulations of PA
CT ?

23
Q

What should you look for when looking at radiograph?

A

Can you see what you need?
Well penetrated
Rotated
Blood or fluid where it shouldn’t be?
Gas

24
Q

What does ipsilateral numbness of mandible suggest?

A

Nerve damage (not fracture)

25
Q

What is sublingual haematoma?

A

Bruise under tongue - suggestive of mandible fracture

26
Q

What causes external inflammatory resorption in an extruded tooth?

A

Damage to the PDL surface resulting in necrotic inflamed pulp.
this releases bacterial toxins which move up the dentinal tubules and stimulate osteoclasts to resort root

27
Q

What does EADT time indicate?

A

If PDL cells are viable (<60 mins)

28
Q

What are the clinical signs external inflammatory resorption

A

Negative sensibility
Maybe TTP
Moth eaten appearance on radiograph

Bds4 Paeds (3 decks)

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