4B

Question 1

Sites of facial growth and which are good to modify

Answer 1

Sutures: Good
Nasal Septum
Synchondrosis: Bad
Condyle
Alveolus: Good

Question 2

Requirements of condyles for modification

Answer 2

function and translation

Question 3

Rapid growth males and females

Answer 3

Males: 12-14

Females 10-12

Question 4

Percent of people with Class II

Answer 4

20%

Question 5

Profile analysis is difficult for

Answer 5

CHildren under 6
Class III
Vertical problems present

Question 6

Vertical vs transverse timing of modification and why

Answer 6

Vertical: difficult because longest acting growth
Transverse: first to correct because stops early

Question 7

Class II and III and tranverse early intervention

Answer 7

II: No benefit of early intervention. Only for esthetics or trauma reduction
III: Maxillary protraction before age 10: 70% success
Transverse: functional shifts and arch length shortage

Question 8

Sequence of surgical treatment

Answer 8

Pre-surgery ortho: prep
Surgical procedure
Post surgical ortho: finishing and detailing

Question 9

Steps of Distraction osteogenesis

Answer 9

Latency: Inflammation
Distraction: Soft callus
Consolidation: Hard callus–>Remodeling

Question 10

Main driving force for new bone formation

Answer 10

distraction

Question 11

Critical part for DO bone formation

Answer 11

periosteum

Question 12

Consolidation time vs distraction time

Answer 12

Distraction 1mm per day

Consolidation: At least double the duration

Question 13

DO vs Orthognathic surgery relapse

Answer 13

DO had less relapse at 2-3 months

Same relapse at 3-6 months

Question 14

Least amount of relapse

Answer 14

Lefort I with external distractor showed no relapse

Question 15

Ossification of DO

Answer 15

Intramembranous
Endochondral
Transchondroid

Question 16

Bone factors of DO

Answer 16

Blood supply
Mesenchymal cells
Periosteum