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Clinical Knowledge 2 > Trauma 3 > Flashcards

Trauma 3 Flashcards

1
Q

What is a concussion injury?

A

injury to the tooth supporting structures without increased mobility or displacement of the tooth but with pain to percussion

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2
Q

What is a subluxation injury?

A

injury to the tooth supporting structures resulting in increased mobility but without displacement of the tooth.

Bleeding at gingival sulcus confirms this diagnosis

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3
Q

What is the splinting time for concussion and subluxation injuries with a passive splint?

A

2 weeks

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4
Q

The prognosis for pulpal survival for subluxation and concussion injuries is better in closed apex teeth. True or false

A

false
prognosis improves in open apex

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5
Q

What is the 5 year pulpal survival rate for concussion and subluxation injuries in open apex teeth?

A

100%

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6
Q

What is the 5 year pulpal survival rate for concussion injuries to closed apex teeth?

A

96%

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7
Q

What is the 5 year pulpal survival rate for subluxation injuries in closed apex teeth?

A

85%

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8
Q

What is the 5 year resorption rate for concussion and subluxation injuries in open apex teeth?

A

1%

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9
Q

What is the 5 year resorption rate for concussion and subluxation injuries in closed apex teeth?

A

3%

resorption of the root

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10
Q

How would you monitor concussion and subluxation injuries?

A
  • clinical test- trauma stamp
  • sensibility tests at time of injury 1 month, 3 months, 6 months, 1 year and then annually for 5 years
  • radiographs- root development, width of the canals; comparison with the other side; infection/ankylosis related resorption of the roots
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11
Q

What is the normal physiological root development?

A

width of canal narrows due to apexogenesis

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12
Q

What does the trauma stamp include ?

A
  • mobility
  • displacement (occlusion)
  • TTP
  • colour
  • sinus/tender in sulcus
  • thermal - ethyl chkoride
  • EPT
  • radiographs
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13
Q

What is an extrusion injury?

A

this is the partial displacement of the tooth out of the socket

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14
Q

What is a lateral luxation injury?

A

this is the displacement of a tooth other than apically.
Displacement is usually accompanie by either a fracture of the labial or lingual/palatal alveolar bone

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15
Q

How should you manage extrusion and lateral luxation injuries in permanent teeth?

A
  • reposition under LA
  • flexible splint for 2 weeks - extrusion
  • flexible splint for 4 weeks- lateral luxation
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16
Q

What is the 5 year pulp survical rate of extrusion and lateral luxation injuries in open apex teeth ?

A

95%

17
Q

What is the 5 year pulpal survival rate for extrusion injuries in closed apex teeth ?

A

45%

18
Q

What is the 5 year survival pulpal rate for lateral luxation injuries in closed apex teeth?

A

25%

19
Q

What is the 5 year resorption rate for extrusion injuries in open apex teeth?

A

5%

20
Q

What is the 5 year resorption rate for lateral luxation injuries in open apex teeth?

A

3%

21
Q

What is the 5 year resorption rate for extrusion injuries in closed apex teeth?

A

7%

22
Q

What is the 5 year resorption rate for lateral luxation injuries in closed apex teeth?

A

38%

23
Q

The risk for root resorption in lateral luxation injuries increases dramatically. True or false

A

true

24
Q

Orthodontic splinting is no longer done. Why is this?

A

this is because the forces used increased the risk of root resorption

25
Q

In a lateral luxation injury, teeth are often quite immobile. What sort of treatment would be unsuitable in such cases?

A

manual repositioning of the teeth

??spontaneous repositioning??

26
Q

How would you monitor an extrusion/lateral luxation injury?

A
  • clinical tests- trauma stamp
  • sensibility tests: thermal and electrical
    *at the time of injury
    1month 3months 6 months, 1 year then annually for at least 5 years
  • radiographs for root development- width and length of canal, infection related/ankylosis related resorption
27
Q

What is an intrusion injury?

A

displacement of the tooth into the alveolar bone

usually accompanied with a fracture of the alveolar bone

28
Q

What is the management of an intrusion injury on an open apex tooth?

A
  • allow re-eruption without intervention
  • if no re-eruption in 4 weeks, start orthodontic repositioning
  • monitor to see if root canal is required
29
Q

The management of an intrusion injury in a closed apex tooth is dependent on …

A

the degree of intrusion

30
Q

How would you manage an intrusion injury of <3mm in a closed apex tooth?

A
  • allow re-eruption without intervention
  • if no re-eruption within 4 weeks, reposition surgicallay and splint for 2 weeks or reposition orthodontically
31
Q

How would you manage an intrusion injury of 3-7mm in a closed apex tooth?

A

reposition surgically or orthodontically

32
Q

How would you manage an intrusion injury of >7mm in a closed apex tooth?

A

surgically reposition
flexible splint for 4 weeks

33
Q

What further treatment is indicated for intrusion injuries of closed apex teeth?

A

RCT /endodontic treatment

this is the tooth has more than likely crushed the blood supply and such vitality (therefore PN) is lost

34
Q

Apexification is for _______ whilst apexogenesis is for _______.

A

apexification- non- vital teeth
apexogenesis- vital teeth - completion of the root and thus formation of the apex

35
Q

What is the 5 year survival rate of intrusion injuries in open apex teeth?

A

40%

36
Q

What is the 5 year survival rate of intrusion injuries in closed apex teeth?

A

0%

37
Q

What is the 5 year resorption rate of intrusion injuries in open apex teeth?

A

6/7%

38
Q

What is the 5 year resorption rate of intrusion injuries in closed apex teeth?

A

100%

Clinical Knowledge 2 (40 decks)

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