General

Question 1

What is mild spacing?

Answer 1

Less than 2mm of spacing

Question 2

What is moderate spacing?

Answer 2

2-4mm of spacing

Question 3

What is severe spacing?

Answer 3

More than 4mm of spacing

Question 4

What is mild crowding?

Answer 4

Less than 4mm of crowding

Question 5

What is moderate crowding?

Answer 5

4-8mm of crowding

Question 6

What is severe crowding?

Answer 6

More than 8mm of crowding

Question 7

When should you be able to palpate for canines palatally?

Answer 7

From age 9

Question 8

When should you be worried that you cannot feel canines?

Answer 8

By age 11- or when C’s have exfoliated
Take Anterior maxillary occlusal radiograph to see for ectopic canines

Question 9

What is the ugly duckling stage?

Answer 9

Transient spacing of the upper 1’s may occur due to the close proximity of their roots to the erupting 2’s and 3’s

Question 10

What can ectopic canines resorb?

Answer 10

The central incisors in 15%
Lateral incisors in upto 66%

Question 11

When is extracting the c’s to encourage eruption of ectopic canines likely to be successful?

Answer 11

Patient is between 10-13 years old
Canine is distal to the midline of the upper lateral incisor
There is sufficient space
After extraction wait 12 months for eruption then reassess

Question 12

What can you do if you need between 1-3mm of space?

Answer 12

Stripping is used where metal sand paper is placed between the teeth and removes some enamel for space