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Role of coronoidectomy in increasing mouth opening.
[oral submucous fibrosis]
To
evaluate
the
effectiveness
of
coronoidectomy
in
advanced
(
stage
III
-IV
)
oral
submucous
fibrosis
(
OSMF
)
and
temporomandibular
joint
(
TMJ
)
ankylosis
.
Five
patients
clinically
diagnosed
as
grade
III
/
IV
OSMF
(
group
1
)
and
seven
patients
clinically
and
radiographically
confirmed
as
TMJ
ankylosis
(
group
2
)
underwent
surgery
entailing
coronoidectomy
in
addition
to
conventional
surgical
procedures
required
in
both
the
conditions
followed
by
vigorous
mouth
opening
exercises
.
The
results
were
evaluated
using
the
interincisal
distance
at
maximum
mouth
opening
as
the
objective
outcome
over
a
follow-up
period
of
2
months
.
OSMF
patients
(
group
I
)
showed
a
mean
preoperative
interincisal
opening
of
14
.
40
mm
which
increased
to
24
.
60
mm
after
conventional
procedures
and
showed
further
increment
to
35
and
44
.
80
mm
after
unilateral
and
bilateral
coronoidectomy
,
respectively
;
which
was
statistically
significant
(
P
=
0
.
043
)
.
Follow-up
of
2
months
showed
a
gradual
increase
in
mean
mouth
opening
compared
to
baseline
which
was
also
found
to
be
statistically
significant
(
P
=
0
.
043
)
.
In
TMJ
ankylosis
patients
(
group
II
)
,
preoperative
mean
mouth
opening
of
6
.
71
mm
increased
to
24
.
29
mm
after
conventional
procedures
,
and
further
to
37
.
29
mm
after
unilateral
coronoidectomy
which
was
statistically
significant
(
P
=
0
.
018
)
.
On
subsequent
follow-up
of
2
months
,
a
gradual
increase
in
mean
mouth
opening
compared
to
baseline
was
observed
which
was
statistically
significant
(
P
=
0
.
018
)
.
Coronoidectomy
is
an
effective
adjunct
in
increasing
intraoperative
and
stabilizing
postoperative
mouth
opening
.
Diseases
Validation
Diseases presenting
"oral submucous fibrosis"
symptom
oral submucous fibrosis
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