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Table 2 Definition of landmarks and measurements used in this study

From: Evaluation of facial soft tissue thickness in asymmetric mandibular deformities after orthognathic surgery

 

Definition

Point

 

 Go1

Gonion point, the midpoint on the mandibular angle between the ramus and the body

 Go2

Point located 15 mm in front of the Go1 on the same axial slice as Go1

 Go3

Point located 15 mm in front of the Go2 on the same axial slice as Go1 and Go2

 Go4

Point located on 15 mm above the Go1 shown on the coronal slice

 Go5

Point located 15 mm in front of the Go4 on the same axial slice as Go4

 Go6

Point located on 15 mm above the Go4 shown on the coronal slice

 Go7

Point located 15 mm in front of the Go4 on the same axial slice as Go6

Measurement

 

 Hard tissue distance (Hard-D)

Horizontal distance between the midsagittal plane and the outer cortex of the bone

 Soft tissue distance (Soft-D)

Horizontal distance between the midsagittal plane and the soft tissue surface

 Soft tissue thickness (Soft-Th)

Horizontal distance between the outer cortex of the bone and the soft tissue surface