Class II Div 2

Question 1

Class II Div 2 - definition

Answer 1

• lower incisal edge posterior occlusion to upper cingulum
• RETROCLINED upper incisors (OJ can still be increased)

Question 2

Class II Div 2 - aetiology

Answer 2

1. skeletal
2. soft tissues (decreased FMPA - lower lip retroclines upper incisors)
3. pathology
4. dental (reduced arch length - crowding)

Question 3

Class II Div 2 - signs

Answer 3

• typically reduced FMPA

Question 4

Class II Div 2 - soft tissue aetiology

Answer 4

• linked with reduced FMPA and lower LAFH
• lower lip acts on upper incisors as is positioned higher in these cases (retroclines them as they are shorter)
• can procline laterals as they get trapped on the lower lip
• high smile line
• marked labiomental fold (lip and chin)
• high masseteric forces (hard ortho space closure)

Question 5

Class II Div 2 - growth modificaiton