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Ortho 1 > Facial Analysis > Flashcards

Facial Analysis Flashcards

1
Q

Minimum amount of photos?

A
  • 8 extraoral

- 5 introral

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2
Q

What landmarks are used for asymmetry assessment? (3)

A
  • Glabella
  • midpoint of chin
  • BOTH infraorbitary points
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3
Q

Why is a tongue depressor useful for facial analysis?

A

to evaluate occlusal plane

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4
Q

Rule of fifths: where do we draw the lines? (2)

A
  • Ears

- internal and external aspect of each eye

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5
Q

Rule of thirds: where do we draw the lines? (2)

A
  • ears

- lip comissures

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6
Q

Arnett & Bergman facial proportions: Where do we draw the lines? (4)

A

(Horizontal)

  • Trichion (hair line)
  • Glabela (Above and between eyebrows)
  • Subnasal
  • Menton
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7
Q

Arnett & Bergman facial proportions: Class II, Class III?

A

Depends on inferior 1/3

  • Class II - increased
  • Class III - decreased
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8
Q

Inferior 1/3 facial analysis: Where do we draw lines? why? (4)

A
  • Subnasal
  • Stomion (superior & inferior)
  • Menton

*can measure the buccal opening

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9
Q

Golden ratio value?

A

1.618:1

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10
Q

What are the types of cranial index classification? (3)

A
  • Brachyfacial
  • Dolichofacial
  • Mesfofacial
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11
Q

Cranial index classification: What do we measure? (4)

A

H-Me / bizygomatic ratio:

  • 1.3 women
  • 1.35 men

Bigonial 30% < Bizygomatic

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12
Q

What is H-Me

A

Trichion to menton (vertical)

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13
Q

Define mesocephalic: (2)

A
  • Falls between brachycephalic and dolicocephalic types

- Avg cranial width

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14
Q

Define mesofacial:

A

well balanced facial features

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15
Q

Mesocephalic values? (3)

A

H/Me ratio = 1.30 or 1.35
SN.GoGn = 32º
SNGn =66º

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16
Q

Mesocephalic horizontal and vertical dimensions?

A

Equilibrium between both

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17
Q

Mesocephalic facial thirds?

A

balanced

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18
Q

Mesocephalic profile?

A

straight

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19
Q

Mesocephalic malocclusion? (2)

A

-normoocclusion OR class I malocclusion

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20
Q

Mesocephalic gonial angle?

A

120 degrees

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21
Q

Mesocephalic mentolabial angle?

A

120-140 degrees

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22
Q

Mesocephalic muscle/lip?

A
  • muscular balance

- lip seal

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23
Q

Mesofacial somatic morphotype?

A

Mesomorph / athletic

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24
Q

Meofacial Morphotype: arch?

A

parabolic

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25
Q

Meofacial Morphotype: teeth?

A

square

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26
Q

Define Brachycephalic: (3)

A
  • Larger cranial width
  • broad square head shape
  • low mandibular plane angle
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27
Q

Define Brachyfacial:

A
  • Broad square face
  • Strong chin
  • Flat lip posture
  • Low mandibular plane angle
  • Straight profile
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28
Q

Brachycephalic vertical/horizonal? (2)

A
  • Horizontal parameters predominance

- Horizontal growth

29
Q

Brachycephalic Values? (3)

A
  • H-Me ratio < 1.3 or 1.35
  • SN.GoGn < 33 degrees
  • SNGn < 66 degrees
30
Q

Brachycephalic lower facial third? mandibular rotation? (2)

A

Decreased

- COUNTERCLOCKWISE mandibular rotation

31
Q

Brachycephalic bite alterations?

A

deep over bite tendency

32
Q

Brachycephalic gonial angle?

33
Q

Brachycephalic condyle? (4)

A
  • vertical and robust

- neck: short and wide

34
Q

Brachycephalic ramus?

35
Q

Brachycephalic mandibular canal?

36
Q

Brachycephalic symphysis?

37
Q

Brachycephalic mentolabial depression?

38
Q

Brachycephalic mentolabial angle?

A

<120 degrees

39
Q

Brachycephalic musculature?

40
Q

Brachycephalic teeth? (3)

A
  • tendency of crowing
  • retroclined incisors
  • barrel teeth
41
Q

Brachycephalic morphotype: somatic? (2)

A

pyknic or endomorph

42
Q

Brachycephalic arch?

A

square (U shaped)

43
Q

Define dolicocephalic: (3)

A
  • narrower cranial width
  • long narrow face shape
  • high mandibular plane angle
44
Q

Define dolicofacial: (5)

A

-long narrow face
-high mandibular plane angle
-convex profile
poor chin development
-anterior-posterior face height imbalance

45
Q

Dolicocephalic horiztonal/vertical:

A
  • Predominance of vertical parameters

- VERTICAL GROWTH

46
Q

Dolicocephalic Values? (3)

A
  • H/Me ratio > 1.30 or 1.35
  • SN.GoGn > 33 degrees
  • SNGn > 66 degrees
47
Q

Dolicocephalic inferior third? mandible rotation? (2)

A
  • INCREASED lower third

- CLOCKWISE mandibular rotation

48
Q

Dolicocephalic bite alterations?

A

open bite tendency

49
Q

Dolicocephalic gonial angle?

50
Q

Dolicocephalic condyle? (2)

A
  • Thin condyle

- distal inclination

51
Q

Dolicocephalic notches?

A

antegonial notch

52
Q

Dolicocephalic ramus?

53
Q

Dolicocephalic vertical symphysis?

54
Q

Dolicocephalic mentolabial depression?

55
Q

Dolicocephalic mentolabial angle?

56
Q

Dolicocephalic muscles?

57
Q

Dolicocephalic lips?

A

no lip seal

58
Q

Dolicocephalic deglutition?

A

disfunctional

59
Q

Dolicocephalic morphotypes: somatic? (2)

A

ectomorph or leptosome

60
Q

Dolicocephalic morphotypes: arch?

A

triangular

61
Q

Dolicocephalic morphotypes: teeth?

A

triangular

62
Q

Ideal proportions for lower third? (2)

A

1/3 upper lip to nose base

2/3 lower lip to menton

63
Q

Profile convity/convexity analyzes: (3)

A
  • Glabella to subnasal

- Subnasal to pogonion

64
Q

Straight profile? (2)

A
  • Class I

- 165-180 degrees

65
Q

Convex profile? (2)

A
  • Class II

- < 165 degrees

66
Q

Concave profile? (2)

A
  • Class III

- > 180 degrees

67
Q

Nasolabial angle value?

A

85-110 degrees

68
Q

What do we use to measure rickett’s aesthetic plane? (2)

A
  • Pronasal

- Pogonion

69
Q

How do we measure chin length? (2)

A
  • lower lip to menton

Ortho 1 (7 decks)

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