30. Orthodontics I Flashcards Preview

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Flashcards in 30. Orthodontics I Deck (183)
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1

Father of MODERN dentistry

Edward angle

2

Father of ortho

Norman kingsley

3

MB cusp of Max 1st molar lines up with the buccal groove of the Mn 1st molar

Mx canine lies between the Mn canine and 1PM

Class I / Neutrocclusion

4

Class I Type 1

Anterior crowding

5

Class I Type 2

Labioversion
(Procline anteriors)

6

Class I Type 3

Anterior crossbite

7

"Negative overjet"

Crossbite

8

Horizontal overlap

Overjet

9

Class I Type 4

Posterior crossbite

10

Class I Type 5

Mesial drifting
(6 months to move)

11

First sign of Drifting

Rotation

12

Class I Type 6

Bimaxillary protrusion

13

🔺MB cusp of the Mx 1M falls between the Mn 1M and 2PM
🔺Mx canine is mesial to mn canine

Class II / Distocclusion/ Retrognathism

14

BQ: "Sunday bite"

Class II Div 1

15

Mx incisor in extreme labioversion
✅Proclined CI

Class II Div 1

16

Mx incisor tipped palatally and in retruded position
Mx laterals are tipped labially or mesially
✅ proclined LI
✅retroclined CI

Class II Div 2

17

Class II Div 1 "subdivision"

Subdivision:
✅ one molar - class I
✅ one molar - class II

18

🔺MB cusp of 1M falls between the Mn 1M and 2M
🔺 Mx canine is distal to Mn canine
✅ Overjet = 0mm or negative

Class III / mesiocclusion / prognathism

19

Class III type 1

Edge to edge/ cusp to cusp/ end to end

20

Class III Type 2

Anterior crowding

21

Class III Type 3

Anterior crossbite

22

BQ: What is the most common malocclusion?

Class I malocclusion

23

BQ: Bimaxillary protrusion is classified under what malocclusion?

Class I Type 6

24

3 signs of incipient malocclusion:

1. Lack of interdental spacing in primary dentition
- Perm ant have greater MD width than primary ant

2. Crowding of permanent incisors in mixed dentition

3. Premature loss of primary canine (mandibular)
- Insufficient arch size in the ant region / lack of space

25

BQ: Appliance used for premature loss of primary mandibular canine

Boards: "LHA" (with spurs)

26

BQ: Normal eruption sequence of mx teeth

612(453)78

27

BQ: Normal eruption sequence of mandibular teeth

612(345)78

28

BQ: Permanent anterior teeth erupts in what direction?

Lingually-apically

29

BQ: Primary anterior teeth erupts in what direction?

Occlusally-facially

30

BQ: Followed by permanent teeth during eruption

Gabernacular cord