Cephalometric Analysis Pt.1

One of the most frequently used analysis. (Consists of skeletal & dental parameters).

• Down's analysis

• Steiner analysis

• Tweeds triangle analysis

• With analysis

Formed by the intersection of Frankfort horizontal plane and the facial plane (N-Pog).

• Face angle

• Y Axis

• Mandibular plane angle

• Interincisal anlge

Significance: To know the antero-posterior positioning of the mandible to the upper face.

• Face angle

• Y Axis

• Mandibular plane angle

• Interincisal anlge

formed by the Sella nasion plane (S-N) and the Sella Gnathion (S-Gn)

• Face angle

• Y Axis

• Mandibular plane angle

• Interincisal anlge

Significance: Analysing the growth pattern of an individual

• Face angle

• Y Axis

• Mandibular plane angle

• Interincisal anlge

formed by the mandibular plane (Me-Go) and Frankfort horizontal plane

• Face angle

• Y Axis

• Mandibular plane angle

• Interincisal anlge

Significance: Helps in assessing if the growth pattern is horizontal or vertical

• Face angle

• Y Axis

• Mandibular plane angle

• Interincisal anlge

once you bisect the upper and lower incisors now you form an angle called

• Face angle

• Y Axis

• Mandibular plane angle

• Interincisal anlge

Significance: Relationship of upper and lower incisors

• Face angle

• Y Axis

• Mandibular plane angle

• Interincisal anlge

Facial angle normal value and range

• 85.1 Degrees

• + or – 3.0 degrees

• 65 Degrees

• + or – 2.8 degrees