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Flashcards in Intro to ortho Deck (15)
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1

What 3 factors does orthodontics deal with?

Aesthetics
Function
Stability

2

What does the index of orthodontic treatment needed (IOTN) measure?

Impact of malocclusion on individuals dental health and their psychosocial well being
Used to allocate acre in NHS

3

What 2 components make up IOTN?

Dental health
Aesthetic

4

How is the dental component of IOTN measured?

Grades occlusal traits which could effect function or longevity of dentition --> worse single feature not cumulative
Grade 1 - no need
Grade 2 - little need
Grade 3 - moderate need
Grade 4 - great need
Grade 5 - very great need

5

How is the aesthetic component of IOTN measured?

10 photographs
Grade 1 - aesthetically pleasing
Grade 10 - least pleasing

5-7 = moder/borderline
8-10 = definite need

6

What is interceptive orthodontics?

Early management of unerupted or impacted teeth
Balancing and compensating extractions

7

Reason for extraction of teeth for ortho

Maintain centre lines, prevent overeruption
Relieve crowding

8

Reason for balancing extractions?

Maintain centre line

9

Compensating extraction?

Extraction of equivalent opposing tooth to prevent over-eruption

10

How can skeletal discrepancy menifest?

Vertical facial proportion - (lower face hight_
Antero-posterior discrepancy
Transverse discrepancy

11

How does dento-alveolar disproportion manifest?

Crowding or spacing

12

Treatment for skeletal discrepancy

In a growing patient = growth modification

Adult patinet = orthognathic surgery

13

HOw can skeletal discrepancy be corrected by growth modification?

Fixed appliance
Twin blocks
Medium opening activaor

14

Class II bite?

Overjet

15

Class III bite?

Protruded manidble