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Ortho > L2- Extra oral exam > Flashcards

L2- Extra oral exam Flashcards

1
Q

symmetrty lines

A

Glabela- subnasale and pogonion

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2
Q

Glabela- subnasale

A

reference line in symmetry

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3
Q

evaluate position of chin with

A

pogonion line

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4
Q

assess midline in what view

A

frontal view

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5
Q

T/F can have symmetrical face but no symmetry

A

true – you can have a midline shift

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6
Q

vertical proportions

- basic

A

usually in thirds – should all be the same

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7
Q

lateral view is what plane

A

sagital plane

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8
Q

key area for face esthetics

A

inferior third of the face

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9
Q

key area for face esthetics

A

inferior third of the face

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10
Q

ricketts esthetic plane

A

tip of nose – pogonion

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11
Q

lower vermillion border in relation to E plane

A

O to +3mm from E plane

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12
Q

Ricketts esthetic plane affected by

A

tooth position and inclination

distance increases with growth or aging

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13
Q

naso-labial angle formed betwee

A

nose and upper lip

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14
Q

normal values of nasolabial angle

A

90-110 degrees

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15
Q

nasolabial angle affected by

A

LIP - upper incisors position and their incliniation

NOSE - cannot be modified with ortho

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16
Q

frontal view shows us

A

frontal - transverse plane

cephalic index - Cl

symmetry

vertical proportions

lip functin

smile esthetics

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17
Q

cephalic index

A

an anthropometric value based on the ratio between the width and length of the head

max head width X 100 DIVIDED by maximum head length

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18
Q

mesocephalic CI

A

mesoproscopic / normocephalic

CI = 79= 81

represents balanced growth and harmonic facial proportions

19
Q

mesoproscopic / normocephalic

A

mesocephalic

20
Q

CI that represents balanced growth

A

79-81

21
Q

CI greater than 81 represents

A

brachycephalic / euryproscopic = SHORT WIDE FACE AND COUNTER-CLOCKWISE GROWTH

associated with deep bite
class II div 2
strong musuculature

bruxers

22
Q

class II div 2 and counter clockwise grwoth considered

A

brachycephalic – CI> 81

23
Q

CI < 79

A

Doluchocephalic / leptoprosopic

24
Q

Doluchocephalic / leptoprosopic

A

CI < 79 –> CLOCKISE RITATIONAL GROWTH

25
Q

clockwise rotational growth

A

Doluchocephalic / leptoprosopic

26
Q

skeletal open bite associated with

A

Doluchocephalic / leptoprosopic

CI < 79

27
Q

characteristics of CI < 79

A
  • clockwise rotational gorwth
  • skeletal open bite
  • weaker musculatiure
  • steep madibular plane
28
Q

reference line for facial symmetry

A

Glabela- subnasale

29
Q

progonion evaluates?

A

position of the chin

30
Q

bottom 1/3 of vertical proportions

A

divided further into upper 1/3 and lower 2/3

the mouth should be about 1/3 of the way between the base of the nose and the chin

31
Q

ideal labial / lip function

A

at rest –> lips in contact or slightly apart

no strain

relaxed position

normal respiration

normal swallowing

32
Q

neuromuscular imbalance mouth breathing - general implicatoin

A

tongue thrust – anterior open bite

33
Q

neuromuscular imbalance in relation to lips can lead to

A

lips apart at rest

lip strain to close

lip trap

mouth breathing - tongue thrust

anterior open bite

increased overjet

34
Q

lateral view in what plane and proportions? plus angle

A

sagital plane

vertical proportions

profile analysis

NASO-LABIAL ANGLE

lip contour

lip function

35
Q

profile analysis reflects ___ skeletal imbalances

A

Mx-Md position

dental imbalances incisor position and/or inclination

36
Q

convex profile more associated with

- elaborate

A 
retruded mandible - maybe class II 
- E line is closer / on top of lips

vs concave - looks more class III –> E line is far in front of the lips

37
Q

___ part of face is key to facial esthetics

A

inferior 1/3

38
Q

rickett esthetic E plane

A

tip of nose – Pogonion

affected by tooth position and inclination

39
Q

rickett esthetic E plane - relation to lower vermillion border

A

0+-3 mm

distance INCREASES with growth or age

40
Q

naso-labial angle normal values

A

90-110 degrees

angle formed between nose and upper lip

41
Q

angle formed between nose and upper lip

A

naso-labial angle

42
Q

naso-labial angle affected by

A

LIP – upper incisors position and inclination

NOSE– poition (can’t be modified with ortho)

43
Q

lip contour ideally

A

‘S’ shaped curl in upper lip

ideally 3 mm in depth

depends on incisor position and inclination

lip thickness and tone

provides an attractive and young appearance

Ortho (19 decks)

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