Download - Holdway's analysis
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HOLDAWAY’S ANALYSIS
Ajeesha Nair
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INTRODUCTION
Reed .A.HoldawayIn 1983
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Variables and Norms
FACIAL ANGLE NOSE PROMINENCE SUPERIOR SULCUS DEPTH SOFT TISSUE SUBNASALE TO H LINE SKELETAL PROFILE CONVEXITY BASIC UPPER LIP THICKNES UPPER LIP STRAIN MEASUREMENT H ANGLE LOWER LIP TO H LINE INFERIOR SULCUS TO H LINE SOFT TISSUE CHIN THICKNESS
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Lines used :
H line or harmony line Soft tissue facial line Hard tissue facial plane Sella-nasion line Frankfort horizontal plane Line drawn at right angle to FH plane
down tangent to the vermilion border of upper lip
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LINES USED
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SOFT TISSUE FACIAL ANGLE
Between FH plane and soft tissue facial plane.
Normal 91 +/- 7. Prognathic or retrognathic
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NOSE PROMINENCE
Nose tip to the line perpendicular to FH and running tangent to upper lip.
14-24 mm
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SUPERIOR SULCUS DEPTH
Perpendicular to FH and tangent to vermilion border of upper lip.
3mm 1-4mm acceptable
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soft tissue subnasale to H line
Ideal is 5mm 3-7mm is normal Short thin lips-3mm Long thicker lips-7mm
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Skeletal profile convexity
From point A to hard tissue facial plane (Na-Pog).
Varies with H angle
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Basic upper lip thickness Upper lip thickness is measured horizontally
from a point 3 mm below point A to outer border of upper lip.
Avg value - 15 mm Amount of lip strain
or incompetency
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Upper lip strain measurement
Vermilion border of upper lip to the most anterior portion of central incisor
13-14 mm
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H angle
Between soft tissue facial plane and harmony line.
Ideal 10 degree 7-15 degrees. Measures upper lip
prominence or retrognathism of the Soft tissue chin
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H angle and skeletal convexity
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Lower lip to H line H line to most prominent point on lower
lip 0- 0.5 mm ideal -1 to + 2mm acceptable. <-1mm lingually positioned lower
anteriors >2mm denture is protrusive
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Inferior sulcus to H line
is measured from the deepest point in the curvature between the Lower lip and the chin and the H-line
AVG VALUE- 5 mm
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Soft tissue chin thickness
Soft tissue thickness is measured from hard tissue Pogonion to soft tissue Pogonion.
AVG VALUE- 10 TO 12 mm
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ACCORDING TO HOLDAWAYA PERFECT PROFILE SHOULD HAVE
ANB - 2 degreesH-LINE ANGLE -7 to 8 degrees
LOWER LIP should touch theH line
H-LINE should bisect S curve between Pronasale and Subnasale
TIP OF THE NOSE - Should be 9mm anterior to H-line
There should be no lip tension on closure
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Analysis
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Normal Patient value
Inference
St facial angle 91+/-7 83 Slightly Retrusive lower jaw
Nose prominence
14-24 mm
17 normal
Superior sulcus depth
1-4 mm2
Normal
Soft tissue subnasale to h ine
5+-2 mm
7 Normal
Skeletal profile convexity
0 mm 3 Convex profile
Upperlip thickness
15mm 20mm Increased
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Normal Patient value
Inference
Upper lip strain 13-14 mm
14 No lip strain
H angle 7-14 22 Protrusive upperlip or retrusive chin
Lower lip to H line
-1- 2 mm
2.5 slightly protrusive
Inferior sulcus to H line
5 mm 5 Normal
Soft tissue chin thickness
10-12 mm
13 Slightly increased
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conclusion
A soft tisue chin nicely positioned in the facial profile
No serioius skeletal convexity H angle with in the convexity A definite lip curl of 4-6 mm Lower lip n h line or within 1 mm of it Lower lip form and sulcus depth
harmonious with upper lip
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REFERENCES
A soft tissue cephalometric analysis and its use in orthodontic treatment planning.Part 1
:Reed A Hold away Orthodontic cephalometry; Athanasios E
Athanasiou
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THANK YOU