1.
SKELATAL MATURITY
INDICATORS AS SEEN IN
THE TRANSVERSE SECTION
OF THE MANDIBLE
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2.
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3.
NANDA
HUNTER
BJORK
BROWN
BISHARA
BODY HEIGHT
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4.
JHONSTON
BERGERSON
GRAVE
PITESKI AND
FISHMAN
HAND AND WRIST
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5.
HAGG
LEWIS
DEMINJIAN
SEXUAL
MATURITY
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6.
CHERTKOW
ENGSTROM
COUTINHO
DENTAL
INDICATORS
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7.
LAMPARSKI
O’REILLY
CERVICAL VERTEBRAE
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8.
HAND WRIST
RADIOGRAPHS
CERVICAL VERTEBRAL
MATURITY
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9.
Differential of
normal growth
In search of achieving a
more reliable and
accurate skeletal
maturity indicator
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10.
MATERIALS AND METHODS
A.B.SHETTY MEMORIAL
INSTITUTE OF
DENTAL SCIENCES
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11.
Sample size: 60(30 males, 30 females)
Age group: 9-16yrs
Radiographs taken:
Lateral cephalogram Transverse slicing
sections
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12.
C o m p le t io n
M a t u r a t io n
D e c e le r a t io n
T r a n s it io n
A c c e le r a t io n
G R O U P A
m a le s
C o m p le t io n
M a t u r a t io n
D e c e le r a t io n
T r a n s it io n
A c c e le r a t io n
G R O U P B
fe m a le s
S U B J E C T S
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13.
Condylion
Gnathion
Gonion
Mandibular
measurements
recorded
Ascending ramus length
Mandibular corpus length
Effective mandibular length
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14.
Measurements taken of the symphysis
region
Buccal cortical thickness
Lingual cortical thickness
Lower border thickness
Mandibular symphysis height
Mandibular symphysis depth
Symphysial index = sym height
sym depth
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15.
Measurements recorded in the
TSS view
Buccal cortical thickness
Lingual cortical thickness
Lower border thickness
Mandibular corpus height
Mandibular corpus depth
Corpus index = corpus height
corpus depth
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16.
COMPARISON
CORPUS INDEX
MANDIBULAR LENGTH
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17.
RESULTS
0
0.5
1
1.5
2
2.5
3
acceleration transition deceleration maturation completion
0
20
40
60
80
100
120
140
corpus index effective mandibular length
Corpus
index
Mandibular
length
1.84 99.3
2.05 107.7
2.17 110.5
2.3 115
2.56 125
Group A
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18.
Corpus
index
Mandibular
length
1.83 99.5
2.08 108
2.16 108
2.3 114
2.51 124
Group B
0
0.5
1
1.5
2
2.5
3
acceleration transition deceleration maturation completion
0
20
40
60
80
100
120
140
corpus index effective mandibular length
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19.
COMPARISON
SYMPHYSIAL INDEX
MANDIBULAR LENGTHwww.indiandentalacademy.com

20.
Symphysial
index
Mandibular
length
1.4 99.3
1.5 107.7
1.7 110.5
1.4 115
1.5 125 0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
acceleration transition deceleration maturation completion
0
20
40
60
80
100
120
140
symphysial index effective mandibular length
Group A
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21.
Symphysial
index
Mandibular
length
1.5 99.5
1.4 108
1.5 108
1.3 114
1.5 124 0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
acceleration transition deceleration maturation completion
0
20
40
60
80
100
120
140
symphysial index effective mandibular length
Group B
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22.
EVIDENCE
SIGNIFICANT AND
RELATIVELY SIMPLE
RELATIONSHIP
STRUCTURES OF THE
MANDIBULAR BODY
AND ITS MATURITY.
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23.
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24.
DISCUSSION
Mandible
Greatest
growth
Strongest,
Largest bone
Cause for
most
malocclusions
Anterior-posterior
Relationship +
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25.
Mandible
Grows longer,more
than maxilla
Various Growth
Modulationprocedures=
Unfortunately untimely
treatment may lead to relapse
due to the continual growth of
the mandible
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26.
Reliable
indicator
Intrinsic
indicator
Valuable tool
Better diagnosis
and treatment
planning
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27.
SUMMARY
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28.
Further study with
a larger sample
Confirm
Longitudinal
study
Useful and
appreciated.
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29.
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