Class II div. 2

Question 1

How common is a class II div. 2 malocclusion?

Answer 1

Incidence 10%

Question 2

What skeletal class is class II div. 2 commonly associated with?

Answer 2

Skeletal II

Question 3

What is commonly found in regards to vertical portions associated with class II div. 2?

Answer 3

• Decreased FMPA and LAFH

- Prominent chin (due to forward rotational mandibular growth)

Question 4

What are the dental features of class II div. 2?

Answer 4

UPPER

• Laterals shorter = escape effects of lower lip but traps it and flares outwards
• Crowding ecp around laterals (depending on lip)
• Incisors retroclined

LOWER
- Incisors retroclined

• OJ = usually reduced
• OB = deep, increased (may be complete to teeth/ palate)

Question 5

What IOTN (DHC) is given for traumatic OB?

Answer 5

4f

Question 6

When to refer class II div. 2?

Answer 6

• Deep OB = when pt is growing

- Skeletal discrepancy = after growth -> orthognathic