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Ortho > Managment Of Impacted Teeth > Flashcards

Managment Of Impacted Teeth Flashcards

1
Q

The tooth that has failed to erupt partially or completely to its correct position in the dental arch and its eruption potential has been lost

A

Impacted tooth

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2
Q

Most common impacted teeth

A

Maxillary canines

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3
Q

Impacted max canine- how much of population?

A

~2%

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4
Q

Maxillary canines - most common in male or female and most common cause

A

Female
Inadequate arch length

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5
Q

Eruption in abnormal position

A

Ectopia

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6
Q

Palatally impacted canines

A

2/3
85% had sufficient space

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7
Q

Labially impacted canines

A

1/3
17% had sufficient space

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8
Q

A canine can be ______ impacted because of genetic predisposition

A

Palatally

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9
Q

Arch length discrepancy primary etiologic factor

A

Labially impacted canine

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10
Q

Causes of canine impaction

A

Genetic or ethnic
Retained deciduous
Space deficiency
Short lateral roots
Abnormal eruption sequence
Trauma to primary tooth bud
Premature root closure
Eruption into cleft

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11
Q

What are labial impactions usually

A

Vertical
Due to loss of space

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12
Q

What are palatal impactions usually

A

Horizontal

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13
Q

Root resorption of _____ teeth

A

Root resorption

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14
Q

Dentigerous _____ and ameloblastoma

A

Cyst

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15
Q

When is there first evidence of calcification of permanent canine

A

4-5 months

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16
Q

Crown formation of permanent canine

A

5-6 years

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17
Q

Eruption permanent canine

A

11-12 years

18
Q

Root completed permanent canine

A

13-15 years

19
Q

Clinical signs of impacted canine

A

Delayed eruption of canine (failure by 14 to erupt)
Prolonged retention of primary canine
Elevation of soft tissue either labially or Palatally
Distal migration of lateral incisors

20
Q

Determine _____ before initiating treatment

A

Location

21
Q

What diagnostic information is needed

A

X-rays
Photos
Palapation

22
Q

SLOB/Clark’s Rule

A

Same lingual opposite buccal

23
Q

If impacted tooth moves in the same direction as the second PA the tooth is _____

A

Lingual or palatal

24
Q

Impactions in the palate will generally appear larger and more blurry than the Contralateral canine

A

Panorex

25
Q

Buccal (facial) impactions appear vertical and coronal to the apices of the anterior teeth
Palatal impactions appear horizontal and apical to the anterior teeth

A

Lateral ceph

26
Q

Facial permanent canine eruption

A

Arch length deficiency (crowding)
Detected earlier than palatal
Easier to manage
May be transposed

27
Q

Palatal permanent canine eruption

A

No arch length deficiency
Watch for 6 month difference from Contralateral canine
Treat early

28
Q

Tx choices of impacted canine

A

Exposure and natural eruption
Exposure and ortho
Extraction and premolar substation
Reimplantation

29
Q

When facial canine, usually need just simple ________ and ___________ mechanics, __________ preservation is chief concern

A

Uprighting
Extrusive
Anchorage

30
Q

Soft tissue considerations - facial

A

Flap design

31
Q

Flap design facial

A

Preserve attached gingiva
Closed eruption of apically repositioned flaps
Adequate exposure for bonding

32
Q

Palatal — ________ arch and make space (TPA, heavy arch wires), expose

A

Stabilize

33
Q

Soft tissue considerations (palatal)

A

Full thickness flap
Good hemostasis
Bone removal if necessary

34
Q

Full thickness flap

A

Open or closed eruption

35
Q

Attachment to cuspids

A

Important utilize proper bonding techniques
Ensure bond is to crown not root
Usually placed by periodontist/OS

36
Q

Clinical hints

A

Identify impactions early - X-rays, clinical exam
Extract primary canine - facilitate eruption

37
Q

Palatal impactions usually require __________ surgery

A

Exposure

38
Q

What do you want to determine the prognosis of before extracting primary teeth

A

Prognosis of impaction

39
Q

You want to establish good ______ and space for the impacted tooth before bringing into the arch

A

Anchorage

40
Q

You want to apply ______ to the tooth immediately following exposure (no later than 2-4 weeks)

A

Traction

41
Q

The removal of the deciduous canine before the age of 11 years will _____ the position of the ectopically erupting permanent canines in ____ % of the cases if the canine is ______ to the midline of the lateral incisor

A

Normalize, 91%, distal

42
Q

The success rate is only ___% if the canine crown is _____ to the midling of the lateral incisor

A

64%
Mesial

Ortho (19 decks)

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