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Table 2 Reference points, lines, and planes used in the morphometric analysis of condyle position

From: Spatial analysis of condyle position according to sagittal skeletal relationship, assessed by cone beam computed tomography

  Description
Reference points, lines, and planes  
 Cs The highest point of the condyle in the sagittal view
 GI Point of greatest concavity of the glenoid fossa
 Cp Most convex point on the posterior face of the condyle
 PI Line perpendicular to the Frankfurt plane passing through the midpoint of the sagittal diameter of the external auditory canal
 Ca Point on the anterior wall of the condyle closest to the posterior wall of the articular eminence
 EI Point on the posterior wall of the articular eminence closest to the anterior wall of the condyle
 E-E′ Line tangential to the posterior wall of the articular eminence
 Fh′ Line parallel to the Frankfurt plane passing through the lower edge of the articular eminence
Distancesa  
 Cs-GI Upper distance from the highest part of the condyle to the deepest part of the glenoid fossa
 Cp-PI Posterior distance from the most convex part of the posterior wall of the condyle to line PI
 Ca-EI Anterior distance joining the most convex point on the anterior wall of the condyle with point EI
 E-E′.Fh′ Angle between the tangent passing through the posterior wall of the articular eminence and the Fh′ plane parallel to the Frankfurt plane
 GI-Fh Height of the eminence from the deepest part of the glenoid fossa to the Fh′ plane parallel to the Frankfurt plane
  1. aUsed for measuring the superior, posterior, and anterior relationships between the condyle and the glenoid fossa.