Growth Predictions

Question 1

The mandibular plane angle does what througout life?

Answer 1

tends to stay stable throughout life

Question 2

What are the best growth predictors?

Answer 2

• mandibular plane angle
• Y axis
• Bjork studies
• normocephalic

Question 3

What are bjork studies?

Answer 3

Patient tend to keep their growht pattern constant

Question 4

What are the two extremes on either side of normocephalic?

Answer 4

• dolychocephalic
• brachycephalic

Question 5

What do you try to modify in a class III?

Answer 5

maxillary length

Question 6

What do you try to modify in a class II?

Answer 6

mandibular length

Question 7

When do growth spurts happen in females?

Answer 7

10-12 years

Question 8

When do growth spurts happen in males?

Answer 8

12-14 years (until 17)

Question 9

In order to modify growth, you must first experience _____

Answer 9

growth

Question 10

What is the frankl appliance?

Answer 10

Stimulation of periosteal growth by alteration of the neuromuscular environment. This appliance will stimulate periosteal pull and bone apposition

Question 11

The frankl appliance uses what rationale?

Answer 11

functional matrix

Question 11

What category is the frankl appliance in?

Answer 11

intramembranous

Question 12

Functional crossbite must be corrected at what age?

Answer 12

a young age

Question 13

What is the max length you can expand with the maxillary expansion appliance?

Answer 13

5-6 mm

Question 14

What are the characteristics of a class II correction?

Answer 14

• True retrognatism (skeletal and genetic)
• Amount of dentoalveolar compensations
• Growth potential

Question 15

What does head gear do?

Answer 15

Slows down growth at the tuberosity level (growth site)

• allows the mandible to catch up

Question 16

What does head gear do to the mandibule?

Answer 16

allows it to catch up to the growth of the maxilla