CEPHALOMETRICS

In lateral cephalometrics ,the distance at which source and object are placed from mid sagittal plane is

• 50 inches

• 60 inches

• 75 inches

• 90 inches

Which of the following landmarks are not located in mandible

• Pogonion

• Gnathion

• Menton

• Porion

The most anterior point of bony chin is

• Gonion

• Pogonion

• Menton

• Gnathion

Unilateral landmark on lateral cephalogram

• Nasion

• Gonion

• Porion

• Orbitale

Which of the following planes can be examined clinically

• Frankfort Horizontal plane

• Bolton plane

• SN plane

• All the above

Mandibular plane angle is formed by

• FH line and N- Pog line

• FH plane and Mandibular plane angle

• FH Plane and Sella Gonion line

• Basion Nasion and N-Pog line

Decreased Interincisal angle indicates

• Retrusion of teeth

• Protrusion of teeth

• Vertical Overlap

• Horizontal Overlap

Angle SNA is used to relate

• Maxilla to Mandible

• Maxilla to Cranial base

• Mandible to Cranial base

• None of the above

Angle formed between the Mandibular plane and long axis of the Mandibular Central Incisor

• 90 +/- 5 degrees

• 25 degrees

• 120 degrees

• 80 +/- 2 degrees

Plane not used in Tweed's analysis is

• FH Plane

• A line passing through long axis of lower central Incisor

• Mandibular Plane

• SN Plane