Ortho 1 > Facial Analysis > Flashcards

Facial Analysis Flashcards

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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
Meofacial Morphotype: teeth?
square
26
Define Brachycephalic: (3)
- Larger cranial width - broad square head shape - low mandibular plane angle
27
Define Brachyfacial:
- Broad square face - Strong chin - Flat lip posture - Low mandibular plane angle - Straight profile
28
Brachycephalic vertical/horizonal? (2)
- Horizontal parameters predominance | - Horizontal growth
29
Brachycephalic Values? (3)
- H-Me ratio < 1.3 or 1.35 - SN.GoGn < 33 degrees - SNGn < 66 degrees
30
Brachycephalic lower facial third? mandibular rotation? (2)
Decreased | - COUNTERCLOCKWISE mandibular rotation
31
Brachycephalic bite alterations?
deep over bite tendency
32
Brachycephalic gonial angle?
<120*
33
Brachycephalic condyle? (4)
- vertical and robust | - neck: short and wide
34
Brachycephalic ramus?
long
35
Brachycephalic mandibular canal?
curved
36
Brachycephalic symphysis?
prominent
37
Brachycephalic mentolabial depression?
increased
38
Brachycephalic mentolabial angle?
<120 degrees
39
Brachycephalic musculature?
Strong
40
Brachycephalic teeth? (3)
- tendency of crowing - retroclined incisors - barrel teeth
41
Brachycephalic morphotype: somatic? (2)
pyknic or endomorph
42
Brachycephalic arch?
square (U shaped)
43
Define dolicocephalic: (3)
- narrower cranial width - long narrow face shape - high mandibular plane angle
44
Define dolicofacial: (5)
-long narrow face -high mandibular plane angle -convex profile poor chin development -anterior-posterior face height imbalance
45
Dolicocephalic horiztonal/vertical:
- Predominance of vertical parameters | - VERTICAL GROWTH
46
Dolicocephalic Values? (3)
- H/Me ratio > 1.30 or 1.35 - SN.GoGn > 33 degrees - SNGn > 66 degrees
47
Dolicocephalic inferior third? mandible rotation? (2)
- INCREASED lower third | - CLOCKWISE mandibular rotation
48
Dolicocephalic bite alterations?
open bite tendency
49
Dolicocephalic gonial angle?
>120
50
Dolicocephalic condyle? (2)
- Thin condyle | - distal inclination
51
Dolicocephalic notches?
antegonial notch
52
Dolicocephalic ramus?
short
53
Dolicocephalic vertical symphysis?
thing
54
Dolicocephalic mentolabial depression?
flat
55
Dolicocephalic mentolabial angle?
>140
56
Dolicocephalic muscles?
hyptonic
57
Dolicocephalic lips?
no lip seal
58
Dolicocephalic deglutition?
disfunctional
59
Dolicocephalic morphotypes: somatic? (2)
ectomorph or leptosome
60
Dolicocephalic morphotypes: arch?
triangular
61
Dolicocephalic morphotypes: teeth?
triangular
62
Ideal proportions for lower third? (2)
1/3 upper lip to nose base | 2/3 lower lip to menton
63
Profile convity/convexity analyzes: (3)
- Glabella to subnasal | - Subnasal to pogonion
64
Straight profile? (2)
- Class I | - 165-180 degrees
65
Convex profile? (2)
- Class II | - < 165 degrees
66
Concave profile? (2)
- Class III | - > 180 degrees
67
Nasolabial angle value?
85-110 degrees
68
What do we use to measure rickett's aesthetic plane? (2)
- Pronasal | - Pogonion
69
How do we measure chin length? (2)
- lower lip to menton
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