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Bilateral Hypodontia in Children With Pierre Robin Sequence.
[oligodontia]
Objective
:
 
To
describe
the
frequency
of
hypodontia
and
left-
right
symmetry
of
hypodontia
in
the
permanent
dentition
of
children
with
Pierre
Robin
sequence
(
PRS
)
.
Patients
and
Method
:
 
The
sample
consisted
of
78
children
born
with
PRS
between
1980
and
2006
and
referred
to
the
Oslo
Cleft
Lip
and
Palate
Team
(
OCLPT
)
.
Data
were
collected
retrospectively
from
the
archives
of
the
OCLPT
.
Panoramic
radiographs
were
evaluated
to
document
hypodontia
;
third
molars
were
excluded
.
Results
:
 
Of
the
78
children
with
PRS
,
hypodontia
was
found
in
33
(
42
%
)
,
Of
the
33
children
with
hypodontia
,
27
(
82
%
)
showed
hypodontia
in
the
micrognathic
lower
arch
,
24
(
73
%
)
were
missing
two
or
more
permanent
teeth
,
and
2
(
6
%
)
had
oligodontia
.
The
teeth
most
often
missing
were
the
mandibular
second
premolar
(
72
%
)
,
followed
by
the
maxillar
second
premolar
(
29
%
)
.
Most
cases
of
hypodontia
(
65
%
)
occurred
bilaterally
.
Bilateral
hypodontia
of
the
mandibular
second
premolar
occurred
in
73
%
of
the
patients
.
Conclusion
:
 
Hypodontia
was
found
in
42
%
of
the
children
with
PRS
,
which
is
seven
times
higher
than
the
prevalence
among
children
without
PRS
(
6
%
)
.
Unlike
in
the
general
population
,
bilateral
hypodontia
was
more
common
than
unilateral
hypodontia
in
the
micrognathic
mandible
of
children
with
PRS
.
Diseases
Validation
Diseases presenting
"left-right symmetry of hypodontia in the permanent dentition of children with pierre robin sequence"
symptom
oligodontia
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