Study Models

Question 1

What do we evaluate sagitally? (2)

Answer 1

• Molar and canine class

- Overjet

Question 2

What do we evaluate vertically? (2)

Answer 2

• over bite

- deep bite / open bite

Question 3

What do we evaluate transversely? (2)

Answer 3

• crossbite/scissor bite

- Midline

Question 4

Incomplete class II?

Answer 4

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

Question 5

Parabolic vs oval arch?

Answer 5

Parabolic: molars diverge
Oval: molars converge

Question 6

BASAL BONE OR APICAL BASE sizes? (4)

Answer 6

• Wide

- narrow

Question 7

WIDE BASAL BONE OR APICAL BASE ? (2)

Answer 7

• Good = Correct transverse relationship

- dental problem NOT osseous

Question 8

NARROW BASAL BONE OR APICAL BASE? (2)

Answer 8

• bad = Small size transverse relationship

- Osseous problem NOT dentoalveolar

Question 9

Is expansion possible in the mandible?

Answer 9

no

Question 10

Bogue index? Values? (4)

Answer 10

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

Question 11

Mayoral index? Values? (6)

Answer 11

• Perm dentition
• measure distance between mesial fossae
• 1st premolar = 35mm
• 2nd premolar = 41mm
• 3rd premolar = 47mm

Compression = lower values
Expansion = bigger

Question 12

Izard index? (3)

Answer 12

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

Question 13

Izard index compression?

Answer 13

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

Question 14

Izard index of expansion?

Answer 14

BIMOLAR WIDTH > ½(BICIGOMATIC WIDTH – 10)

Question 15

Pont index?

Answer 15

• measure between 1st premoalars and molars

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

Question 16

Compression/expansion values for Pont premolar?

Answer 16

• Compression > 80

- Expansion < 80

Question 17

Compression/expansion values for Pont Molar?

Answer 17

• Compression > 64

- Expansion < 64

Question 18

Carrea Index? Values? (4)

Answer 18

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

Question 19

Increased axial inclination?

Answer 19

proclined incisors

Question 20

Decreased axial inclination?

Answer 20

retroclined incisors

Question 21

Which is more frequent mesial or distal migration?

Answer 21

mesial

Question 22

Ideal spee curve?

Answer 22

flat

Question 23

Mild spee curve?

Answer 23

1-2mm

Question 24

Moderate spee curve?

Answer 24

3-4mm

Question 25

Accentuated spee curve?

Answer 25

>4mm

Question 26

what is mesiodens? (2)

Answer 26

- Supernumerary situated in maxillary anterior midline. | - Usually palatally placed

Question 27

Anodontia?

Answer 27

All teeth missing

Question 28

Oligodontia?

Answer 28

3 or more teeth missing

Question 29

Hypodontia?

Answer 29

1-2 teeth missing *most frequent

Question 30

Superior sequence of eruption?

Answer 30

- 6-1-2-4-5-3-7

Question 31

Inferior sequence of eruption?

Answer 31

- 6-1-2-3-4-5-7

Question 32

Mixed dentition 1st phase age?

Answer 32

6 - 8/9

Question 33

Mixed dentition 2nd phase age?

Answer 33

9 - 12

Question 34

What is version?

Answer 34

tooth inclination (is a movement)

Question 35

What is gresion?

Answer 35

tooth BODY movement (no inclination)

Question 36

What teeth are not included in space analysis?

Answer 36

molars

Question 37

how to use the radiographic method for space analysis?

Answer 37

- 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

Question 38

How to use moyers prediction table?

Answer 38

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