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Ortho > Dx and Tx Planning > Flashcards

Dx and Tx Planning Flashcards

1
Q

Three planes by which we analyze teeth.

A

Sagittal
Vertical
Transverse

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2
Q

Relationship of the upper and lower teeth in the sagittal dimension.

A

Class I, II, or III

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3
Q

Relationship of the upper and lower teeth in the vertical dimension.

A

Open or deep bite

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4
Q

Relationship of the upper and lower teeth in the Transverse dimension.

A

Buccal or lingual crossbite

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5
Q

ANB value of skeletal Class I

A

2 degrees

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6
Q

ANB > 2 is what skeletal class?

A

II

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7
Q

ANB < 2 is what skeletal class?

A

III

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8
Q

Line from columella to chin

A

S line

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9
Q

Line from tip of the nose to chin

A

E line

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10
Q

Distance between upper and lower lips to the S line

A

0 mm

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11
Q

Distance between upper lip to E line

A

-4 mm

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12
Q

Distance between lower lip and E-line

A

-2 mm

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13
Q

Sum total of the the mesio-distal width mesial to the permanent second molars.

A

Required Space

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14
Q

Available Space

A

Straight line approximation of the arch that you get by adding up all the 2-tooth segments.

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15
Q

When is extraction contraindicated in skeletal Class I, dentoalveolar I?

A

When upper and lower teeth are retrusive.

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16
Q

Tx for skeletal Class II, Dentoalveolar class II in growing patients.

A

Orthopedic appliances.

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17
Q

Tx for skeletal Class II, Dentoalveolar class II in non-growing patients.

A

Orthognathic surgery

18
Q

Tx in which you’re aligning the jaws by growth guidance in growing patients.

A

Orthopedic tx

19
Q

Tx in which you’re aligning the jaws in non-growing (adult) patients.

A

Orthognathic tx

20
Q

Boys or girls have an earlier growth spirt?

A

Girls

21
Q

Head Gear is worn for what class of patients?

A

Class II

22
Q

Head gear cervical pull is for what?

A

Deep bite

23
Q

Head gear high pull is for what?

A

Open bite

24
Q

What time of the day is Growth Hormone released in growing kids?

A

During sleep

25
Q

How much pressure does head gear put on?

A

16 oz

26
Q

How long do you have to wear head gear?

A

12-14 hrs/day

27
Q

Used in orthopedic tx of growing Class II patients with protrusive maxilla

A

Head gear

28
Q

Fixed functional appliance that advanced the lower jaw.

A

Herbst appliance

29
Q

Used in orthopedic tx of Class II growing patients with a retrusive mandible.

A

Herbst appliance

30
Q

Used in Class III skeletal to pull the maxilla forward and reduce the growth of the mandible.

A

Face mask

31
Q

Face mask uses what bone as anchorage?

A

Frontal bone

32
Q

Face mask is AKA what?

A

Reverse head gear

33
Q

Upper and Lower teeth both flare out (protrusive), or they both flare in (retrusive).

A

Skeletal Class I, Dentoalveolar I

34
Q

If upper and lower teeth both flare out, what tx is indicated?

A

Extraction of premolars.

35
Q

If upper and lower teeth both flare in (retrusive), what is contraindicated?

A

Extraction

36
Q

If upper and lower teeth both flare in (retrusive), what is indicated?

A

Expansion

37
Q

If upper and lower teeth both flare in, what is CONTRAindicated?

A

Extraction

38
Q

Two types of skeletal class II, dentoalveolar Class II.

A

1) Mandibular teeth and mandible are retrusive.

2) Maxillary teeth are protrusive and mandibular teeth are retrusive.

39
Q

How to fix skeletal class II, dentoalveolar Class II where the maxillary teeth are protrusive?

A

Extraction or distalization of maxillary teeth.

40
Q

How to fix skeletal class II, dentoalveolar Class II where the mandibular teeth are retrusive?

A

1) Orthognathic surgery if non-growing to bring the mandible forward.
2) Orthopedic tx if growing.

Ortho (13 decks)

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