ortho quiz

Question 1

What is the most common tooth to be congenitally missing (excluding 3rd molars)?

Answer 1

Lower second premolars.

Question 2

Which is the last facial bone to complete growing?

Answer 2

Mandible

Question 3

Which cephalometric angle is representative of the AP patient’s skeletal pattern?

Answer 3

ANB

Question 4

What is the Eastman corrected ANB angle in a patient whose SNA = 85º, ANB = 4º and SN-MP = 12º?

Answer 4

4º

Question 5

What is the most common aetiology of the retroclined upper incisors in a class II div 2 malocclusion?

Answer 5

High lower lip line.

Question 6

What is the most likely cause of palatally erupting upper second premolars?

Answer 6

Space Loss

Question 7

What is the normal developing molar relationship in the mixed dentition?

Answer 7

1/2 class 2

Question 8

What is the most likely cause of a midline diastema in a child aged 8 years old?

Answer 8

Normal Dental Development

Question 9

What is the most likely reason for interceptive orthodontic treatment for a child with an anterior crossbite with a premature contact and mandibular displacement?

Answer 9

Potential gingival recession of the lower incisor associated with the premature contact.

Question 10

In which circumstance would an adult qualify for NHS Orthodontic treatment in a specialist practice?

Answer 10

If they were referred as a child and are still on the waiting list at 18 with an IOTN 4d.