Ceph Soft Tissue Measurements

Question 1

Nasolabial Angle (NLA)

Answer 1

Lines = Subnasale - columella; subnasale - lip

Measure = outer angle

Indicates = lip AP position; nose angulation (protruded/retruded)

Norm = 100 +/- 10 degrees

Question 2

Facial Contour Angle

Answer 2

Lines = Glabella-Subnasale (upper facial plane)

Subnasale-ST Pogonion (lower facial plane)

Measure = inferior angle

Indicates = AP position of soft tissue chin and profile; (convex/straight/concave)

Norm = -11 +/- 4 degrees (NEGATIVE #!)

Question 3

Upper to Lower Face Height

(UFH : LFH)

Answer 3

Lines = Glabella-Subnasale;

Subnasale-ST Pogonion

Measure on facial planes =

UFH = glabella-subnasale

LFH = subnasale-menton

Indicates = soft tissue lower face height (deficient/excess)

Norm = UFH - mm (1:1)

Question 4

Face Height Pupil

Answer 4

Lines = Glabella-Subnasale;

Subnasale-ST Pogonion

Measure on facial planes =

Right angle to planes

UFH = pupil-subnasale

ULL = subnasale-stomonion

LLL = stomonion-menton

Indicates = soft tissue height (deficient/excess)

Norm = UFH - P (2:1:2)

Question 5

Lip Protrusion

Answer 5

Lines = Subnasale - ST Pogonion

Measure perpendicular =

• To most prominent point of upper lip
• To most prominent point of lower lip

Indicates =lip protrusion/retrusion

Norm = Upper Lip = 3.5 +/- 1.2 mm

Lower Lip = 2.2 +/- 1 mm

Question 6

Upper Lip Length

Answer 6

Lines = Subnasale - Stomonion

Measure perpendicular =

-Along line from subnasale to stomonion

Indicates = Upper lip length (relative incisor vertical exposure)

Norm =

Male = 21 - 26 mm

Female = 17 - 23 mm