Cephalometric Analysis pt.2

Steiner’s analysis is created by

• Cecil Steiner in 1930

• Cecil Steiner in 1940

antero-posterior position of point A relative to the anterior cranial base (Sella Nasion)

• SNA angle

• SNB angle

• A and B angle

• 1/SN

Significance: Assess the degree of prognathism of the maxilla (How the maxilla is protruded)

• SNA angle

• SNB angle

• A and B angle

• 1/SN

Sella Nasion, and point B

• SNA angle

• SNB angle

• A and B angle

• 1/SN

Significance: Assess the degree of prognathism of mandible

• SNA angle

• SNB angle

• A and B angle

• 1/SN

Nasion point A, and point B

• SNA angle

• SNB angle

• A and B angle

• 1/SN

Significance: assess sagittal relationship of maxilla and mandibular base

• SNA angle

• SNB angle

• A and B angle

• 1/SN

Maxillary incisor and Maxillary base.

• SNA angle

• SNB angle

• A and B angle

• 1/SN

Significance: assess the maxillary incisor to maxillary base

• SNA angle

• SNB angle

• A and B angle

• 1/SN

SNA angle normal value and range

• 84.5 Degrees

• + or – 5.3 degrees

• 82 Degrees

• + or – 4.9 degrees