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Proposed new grading of oral submucous fibrosis based on cheek flexibility.
[oral submucous fibrosis]
Oral
submucous
fibrosis
(
OSMF
)
is
a
potentially
malignant
disorder
of
oral
cavity
,
pharynx
and
upper
digestive
tract
,
characterized
by
progressive
inability
to
open
the
mouth
.
Based
on
clinical
and
/
or
histopathological
features
,
various
classifications
and
grading
systems
have
been
put
forth
till
date
.
The
aim
of
the
present
study
was
to
study
the
variance
in
cheek
flexibility
in
OSMF
patients
,
the
observance
of
which
led
to
the
introduction
of
a
new
grading
for
the
condition
.
The
study
included
412
patients
with
OSMF
attending
to
the
Department
of
Oral
Medicine
and
Radiology
during
the
period
from
December
2008
to
June
2013
.
A
detailed
history
and
examination
of
the
patients
was
performed
with
special
emphasis
on
measuring
cheek
flexibility
.
Statistical
analysis
was
done
using
Chi
-square
test
and
p
<
0
.
05
was
considered
to
be
statistically
significant
.
The
most
common
etiological
factor
was
tobacco
(
73
.
3
%
)
.
All
the
patients
reported
with
burning
sensation
of
the
mouth
and
blanching
of
the
mucosa
.
Malignancy
was
reported
in
only
4
.
6
%
patients
.
60
.
4
%
patients
showed
cheek
flexibility
of
30
mm
and
above
,
while
29
.
6
%
patients
showed
cheek
flexibility
between
20
-
30
mm
and
10
%
patients
showed
less
than
30
mm
of
cheek
flexibility
.
The
observations
of
the
present
study
have
led
to
the
proposal
of
a
new
grading
of
OSMF
based
on
cheek
flexibility
which
could
assist
in
the
categorization
of
the
condition
by
the
clinicians
.
Key
words
:
Cheek
flexibility
,
oral
submucous
fibrosis
,
grading
,
areca
nut
.