Soft tissue analysis report)

SOFT TISSUE ANALYSIS

Reported By:

Dr. Kristel

A) PROFILE VIEW

1. Facial 3rd Ratio

2. Assessment of the Nose & Lips

3. Analysis of Chin & Neck

4. Rickett’s E-Line

5. Steiner’s S-Line

B) HOLDAWAY’S SOFT TISSUE ANALYSIS

PROFILE VIEW

Facial 3rd Ratio

Ideal profile can be divided into 3 equal parts:

a) Frontal Third (Tr-N)

b) Nasal Third (N-Sn)

c) Gnathic Third (Sn-Gn)

with the exception of:

Midface N-Sn (45%)

Lower Face Sn-Gn (55%)

Assessment of the Nose & Lips

Angular Profile Analysis (Subtelny)

*Soft Tissue Profile (N-Sn-Pog)

Ave. Value = 161˚

(Note: Convexity does not change with age.)

*Full Soft Tissue Profile (N-No-Pog)

Ave. Value = 137˚ (M) & 133˚ (F)

(Note: Convexity increases with age bec. Of the anterior growth

of the nose.)

- According to Subtelny, there is greater increase in the Maxillary than

the Mandibular soft tissue profile which explains why the soft tissue

grows convex with age.

.

Analysis of the Lips

* Length of the Upper Lip (Sn-Sto)

Mean Values

BURSTONE

Boys - 24mm

Girls - 20mm

RAKOSI

Boys - 22.5mm

Girls - 20mm

CLASS II - 22mm

CLASS III - 20.9mm

* Length of the Lower Lip (Sto-Gn)

Mean Values

BURSTONE

Boys - 50mm

Girls - 46.5mm

RAKOSI

Boys - 45.5mm

Girls - 40mm

CLASS II - Retraction of upper incisors – lower lip curls up and

moves forward.

CLASS III - Lingual tip of lower incisors – lip moves backward.

*Thickness of the Upper Lip(From the labial surface of the Maxillary Incisor up to the Labrale Superius point)

Ave. Size: 11.5mm (RAKOSI)

CLASS II: Upper lip is thin due to angulation of upper incisors.

CLASS III: Upper lip thicker as it rests on lower lip.

During the course of treatment:

CLASS II: Lips grows thicker

CLASS III: Lips grow thinner

* Thickness of the Lower Lip(From the labial surface of the Maxillary Incisor up to the Labrale Superius point)

Ave. Size: 12.5mm (RAKOSI)

CLASS II: Lower lip is thicker (14mm)

CLASS III: Lower lip is thinner (11.9mm)

During the course of treatment:

CLASS II: Lips becomes thinner

CLASS III: Lips becomes thicker

Assessment of the Chin & Neck

*Lower Face Throat Angle

Landmarks: Sn to Gn, Gn to C

Mean Value: 100˚

Diagnosis: A decrease in value

indicates a prominent chin.

Rickett’s Lip Analysis (E-Line)

Reference point: Tip of the Nose & Pogonion.

Note: Lips are analyze based on the distance of the lips to

this reference line.

Normal Values:

Upper: 2-3mm

Lower: 1-2mm

*LIP PROTRUSION - if the measurement exceeds the normal

range of values.

*LIP RETRUSION- if the measurement is below the normal range of

values.

Steiners’s Lip Analysis (S-Line)

Reference point: Center of the S-shaped Curve (bet. Tip of the

Nose and Sub Nasale) & Pogonion.

*LIP PROTRUSION - if the lips are positioned ahead of the

S-Line.

*LIP RETRUSION - if the lips are positioned behind the S-Line.

Holdaway’s Soft Tissue Analysis

*Facial Angle & Upper Lip Curvature

FACIAL ANGLE’s Reference line: FH plane & N-Pog

Ave. Value: 90-92˚

> Ave. Value: Protrusive lower jaw

< Ave. Value: Retrusive lower jaw

UPPER LIP’s Reference line: FH plane & a line drawn vertical

to the Tip of the Upper Lip.

Note: the distance from the depth of the sulcus of the

upper lip up to the line drawn from the Tip of the nose.

Ave. Value: 1.5 - 4mm

*H-Line Angle & Skeletal Convexity at Point A

H-LINE ANGLE’s Reference Line: H-Line & N-Pog

Ave. Value: 7-15˚

Purpose: It measures the upper lip prominence or retrognathism

of the soft tissue chin.

SKELETAL CONVEXITY’s Reference Line: A vertical line

drawn from point A & N-Pog

Ave. Value: +2 to -2mm

Purpose: It assess facial skeletal convexity relating to the position

of the upper lip.

Relationship between H-Line Angle & Skeletal Convexity at Point A:

Convexity of Pt. A to Na-Pog(in millimetres)

H-Line Angle

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*Nose Tip to H-Line & Upper Sulcus Depth

NOSE TIP TO H-LINE’s Reference: Tip of the Nose & H-Line

Ave. Value: 12mm

UPPER SULCUS DEPTH’s Reference: Sub Spinale & H-Line

Ave. Value: 5mm

Nose Tip – H Line

Upper Sulcus Depth

*Upper Lip Thickness & Upper Lip Strain

UPPER LIP’S THICKNESS - is measured horizontally from a

point, 2mm below point A up to the outer border of the upper lip.

Ave. Value: 15mm

UPPER LIP’S STRAIN - is measured from the labial surface of

the Maxillary central incisor up to the Vermillion border of the lip.

*Lower Sulcus Depth & Soft Tissue Chin

Thickness

LOWER SULCUS DEPTH - is measured from the deepest point in

the curvature between the lower lip and the chin.

Reference for Measurement: Lower Sulcus Depth & H-Line

Ave. Value: 5mm

SOFT TISSUE THICKNESS’ Reference: Pogonion of the Hard &

Soft Tissues.

Ave. Value: 10-12mm

According to Holdaway, a PERFECT PROFILE should have:*ANB: 2˚*H-Line Angle: -7 to 8˚*Lower Lip should touch the H-Line.*H-Line should bisect the S-curve between the Pro Nasale and Sub Nasale.*Tip of the Nose should be 9mm anterior to the H-Line and there should be NO LIP STRAIN factor.(Lip Strain – Prominent thickness of either the lower or upper lip.)

-END-THANK YOU