Constancy of the angle between the Frankfort horizontal plane and the sella-nasion line

The Angle Orthodontist, 09/05/2013

To investigate the constancy of the angle between the Frankfort horizontal plane (FH) and the sella–nasion line (SN) using longitudinal data. There are variations among individuals in the angle between the FH and SN. However, within an individual, the angle does not vary significantly over time during the observation period.

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