ABO Orthodontic Diagnosis and Treatment Planning 2

Question 1

A patient presents with a mandible positioned posteriorly and a convex profile. Which skeletal classification does this most likely represent?

Accepted Answer

Skeletal Class II

Answer

Skeletal Class I

Answer

Skeletal Class III

Answer

Vertical maxillary excess

Question 2

On a lateral cephalogram, the ANB angle measures 7 degrees. What does this indicate?

Accepted Answer

Skeletal Class II tendency

Answer

Skeletal Class I

Answer

Skeletal Class III tendency

Answer

Ideal bimaxillary balance

Question 3

Which radiograph is most appropriate for evaluating impacted canine position in three dimensions?

Accepted Answer

Cone-beam CT (CBCT)

Answer

Panoramic film

Answer

Lateral cephalogram

Answer

Bitewing radiograph

Question 4

The Bolton analysis is used primarily to assess what?

Accepted Answer

Tooth size discrepancy between arches

Answer

Skeletal growth direction

Answer

Airway volume

Answer

Condylar position

Question 5

A negative value on space analysis in the mandibular arch indicates:

Accepted Answer

Arch length deficiency (crowding)

Answer

Excess spacing

Answer

Ideal alignment

Answer

Overjet increase

Question 6

Which cephalometric measurement best evaluates the vertical growth pattern?

Accepted Answer

Mandibular plane angle (FMA)

Answer

SNA angle

Answer

Interincisal angle

Answer

Wits appraisal

Question 7

A patient with an anterior open bite and tongue thrust should first be evaluated for:

Accepted Answer

Underlying etiology such as habit or skeletal pattern

Answer

Immediate extraction

Answer

Fixed retention only

Answer

Orthognathic surgery without records