Phase I Tx

Question 1

tx for anterior crossbite

Answer 1

2x4 braces, active retainer

Question 2

Posterior crossbite is usually due to…

Answer 2

a narrow maxilla

Question 3

tx for posterior crossbite

Answer 3

palatal expansion

Question 4

tx for severe overjet

Answer 4

2x4 braces, class II headgear

Question 5

occurs when a deep cite causes lower incisors to impinge on the soft tissue of the palate

Answer 5

palatal impingement

Question 6

tx for palatal impingement

Answer 6

maxillary bite plate (protects the palate by restricting the deep bite)

Question 7

Consequences of thumb sucking:
- anterior open bite
- posterior cross bite
- narrowing of maxilla
- proclined maxillary incisors
- retroclined mandibular incisors

Answer 7

thumb sucking

Question 8

tx for an anterior open bite due to tongue thrusting or thumb sucking

Answer 8

rake or blue grass appliance

Question 9

most commonly impacted teeth (after 3rd molars)

Answer 9

maxillary canines

Question 10

tx of severe crowding

Answer 10

serial extraction

Question 11

order of serial extraction

Answer 11

canine, 1st molars, 1st premolar