ABO (Reading) 4

Question 1

In the ABO Scenario-Based Component, candidates read a clinical vignette and must primarily demonstrate which competency?

Accepted Answer

Diagnosis and treatment decision-making

Answer

Rote memorization of dates

Answer

Laboratory billing codes

Answer

Marketing strategy

Question 2

Reading a hand-wrist radiograph for skeletal maturity, ossification of the adductor sesamoid of the thumb signals what?

Accepted Answer

Onset of the pubertal growth spurt

Answer

Growth is complete

Answer

No diagnostic value

Answer

Dental age only

Question 3

The cervical vertebral maturation (CVM) method reads changes in which vertebrae to estimate skeletal age?

Accepted Answer

C2, C3, and C4

Answer

C1 to C2 only

Answer

C5 to C7

Answer

Thoracic vertebrae

Question 4

In ABO finished-case evaluation, 'root angulation' is best assessed from which record?

Accepted Answer

Panoramic radiograph

Answer

Intraoral photographs

Answer

Facial profile photo

Answer

Study model bases

Question 5

When reading a lateral cephalogram, the nasolabial angle is used to evaluate what?

Accepted Answer

Upper incisor inclination and lip support

Answer

Mandibular canal position

Answer

Condylar shape

Answer

Sinus pneumatization

Question 6

In interpreting overjet measurement, an increased overjet with proclined upper incisors is most consistent with which malocclusion?

Accepted Answer

Class II division 1

Answer

Class II division 2

Answer

Class III

Answer

Anterior open bite

Question 7

A candidate reading study models measures arch length discrepancy; a negative value indicates what?

Accepted Answer

Crowding

Answer

Spacing

Answer

Ideal alignment

Answer

Crossbite