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Ortho 1 > Study Models > Flashcards

Study Models Flashcards

1
Q

What do we evaluate sagitally? (2)

A
  • Molar and canine class

- Overjet

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2
Q

What do we evaluate vertically? (2)

A
  • over bite

- deep bite / open bite

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3
Q

What do we evaluate transversely? (2)

A
  • crossbite/scissor bite

- Midline

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4
Q

Incomplete class II?

A

Mesial aspects of both 6’s in the same vertical plane

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5
Q

Parabolic vs oval arch?

A

Parabolic: molars diverge
Oval: molars converge

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6
Q

BASAL BONE OR APICAL BASE sizes? (4)

A
  • Wide

- narrow

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7
Q

WIDE BASAL BONE OR APICAL BASE ? (2)

A
  • Good = Correct transverse relationship

- dental problem NOT osseous

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8
Q

NARROW BASAL BONE OR APICAL BASE? (2)

A
  • bad = Small size transverse relationship

- Osseous problem NOT dentoalveolar

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9
Q

Is expansion possible in the mandible?

A

no

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10
Q

Bogue index? Values? (4)

A
  • Primary/mixed dentition
  • distance b/w distopalatal side of 2nd primary molars
  • <30 compression
  • > 30 expansion
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11
Q

Mayoral index? Values? (6)

A
  • Perm dentition
  • measure distance between mesial fossae
  • 1st premolar = 35mm
  • 2nd premolar = 41mm
  • 3rd premolar = 47mm
Compression = lower values
Expansion = bigger
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12
Q

Izard index? (3)

A
  • relation b/w bicigomatic and molar widths
  • measured with special compass
  • Measured from vestibular side (mesiobuccal cusps) of upper first molars
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13
Q

Izard index compression?

A

BIMOLAR WIDTH < 1/2 (BICIGOMATIC WIDTH– 10)

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14
Q

Izard index of expansion?

A

BIMOLAR WIDTH > ½(BICIGOMATIC WIDTH – 10)

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15
Q

Pont index?

A
  • measure between 1st premoalars and molars

- Take mesiodistal diameter of the 4 incisors * 100. Divide it by the premolars / molars distance

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16
Q

Compression/expansion values for Pont premolar?

A
  • Compression > 80

- Expansion < 80

17
Q

Compression/expansion values for Pont Molar?

A
  • Compression > 64

- Expansion < 64

18
Q

Carrea Index? Values? (4)

A
  • Distance between upper first molars
  • Take mesiodistal diameters of 1-6. Divide by molar distance
  • Compression > 1
  • Expansion < 1
19
Q

Increased axial inclination?

A

proclined incisors

20
Q

Decreased axial inclination?

A

retroclined incisors

21
Q

Which is more frequent mesial or distal migration?

A

mesial

22
Q

Ideal spee curve?

A

flat

23
Q

Mild spee curve?

A

1-2mm

24
Q

Moderate spee curve?

A

3-4mm

25
Q

Accentuated spee curve?

A

> 4mm

26
Q

what is mesiodens? (2)

A
  • Supernumerary situated in maxillary anterior midline.

- Usually palatally placed

27
Q

Anodontia?

A

All teeth missing

28
Q

Oligodontia?

A

3 or more teeth missing

29
Q

Hypodontia?

A

1-2 teeth missing

*most frequent

30
Q

Superior sequence of eruption?

A
  • 6-1-2-4-5-3-7
31
Q

Inferior sequence of eruption?

A
  • 6-1-2-3-4-5-7
32
Q

Mixed dentition 1st phase age?

A

6 - 8/9

33
Q

Mixed dentition 2nd phase age?

A

9 - 12

34
Q

What is version?

A

tooth inclination (is a movement)

35
Q

What is gresion?

A

tooth BODY movement (no inclination)

36
Q

What teeth are not included in space analysis?

A

molars

37
Q

how to use the radiographic method for space analysis?

A
  • Actual width of primary divided by the apparent width = actual actual width of unerupted divided by apparent width of unerupted
  • use when 2 perm teeth are missing
38
Q

How to use moyers prediction table?

A

-add up sum of upper and lower incisors (separately)

Ortho 1 (7 decks)

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