ABO Cephalometric Analysis and Radiographic Interpretation

Question 1

What is the normal value for the SNA angle in cephalometric analysis?

Accepted Answer

82°

Answer

76°

Answer

79°

Answer

88°

Question 2

Which cephalometric landmark is defined as the most posterior-superior point of the pituitary fossa?

Accepted Answer

Sella

Answer

Nasion

Answer

Articulare

Answer

Porion

Question 3

The Frankfort Horizontal plane is constructed between which two cephalometric landmarks?

Accepted Answer

Porion to Orbitale

Answer

Sella to Nasion

Answer

ANS to PNS

Answer

Gonion to Menton

Question 4

Which cephalometric analysis first introduced the concept of measuring facial convexity angle to evaluate the skeletal profile?

Accepted Answer

Downs analysis

Answer

Steiner analysis

Answer

Ricketts analysis

Answer

McNamara analysis

Question 5

In standard cephalometric analysis, the mandibular plane is most commonly constructed from which landmarks?

Accepted Answer

Gonion to Menton

Answer

Articulare to Pogonion

Answer

Sella to Nasion

Answer

ANS to Menton

Question 6

What is the normal range for the FMA (Frankfort-Mandibular Plane Angle) in Tweed's analysis?

Accepted Answer

25–30°

Answer

12–18°

Answer

19–24°

Answer

31–38°

Question 7

An ANB angle of +6° in a patient most likely indicates which skeletal classification?

Accepted Answer

Class II skeletal relationship

Answer

Class I skeletal relationship

Answer

Class III skeletal relationship

Answer

Normal bimaxillary protrusion