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Evaluation of tooth number anomalies in a subpopulation of the North-East of Turkey.
[oligodontia]
The
aim
was
to
evaluate
the
prevalence
and
distribution
of
tooth
number
anomalies
in
a
Turkish
subpopulation
.
A
population
of
2722
patients
(
1532
females
and
1190
males
;
mean
age
,
12
.
33
±
2
.
5
years
)
was
retrospectively
examined
to
determine
the
prevalence
and
distribution
of
the
hypodontia
,
oligodontia
,
and
hyperdontia
using
panoramic
radiographs
.
All
permanent
teeth
were
investigated
except
thirds
molars
and
the
data
obtained
were
recorded
as
unilateral
(
left
or
right
)
or
bilateral
according
to
gender
.
Pearson
's
Chi
-squared
and
Fisher
exact
tests
were
used
for
difference
comparisons
(
P
<
0
.
05
)
.
Permanent
tooth
anomalies
were
found
in
at
least
132
(
4
.
84
%
)
of
2722
patients
with
no
statistically
difference
between
the
genders
,
consists
of
4
.
63
%
females
and
5
.
12
%
males
.
Distribution
of
hyperdontia
was
statistically
significant
difference
between
genders
,
whereas
distribution
of
hypodontia
and
oligodontia
was
no
significant
difference
between
genders
.
Hypodontia
was
the
most
frequently
observed
anomaly
(
3
.
67
%
)
,
followed
by
hyperdontia
(
0
.
96
%
)
,
and
oligodontia
(
0
.
21
%
)
.
Oligodontia
and
hypodontia
were
more
frequent
in
females
(
3
.
98
%
and
0
.
26
%
,
respectively
)
,
whereas
hyperdontia
was
more
frequently
observed
in
males
(
1
.
68
%
)
.
Maxillary
lateral
incisors
were
most
common
missing
teeth
(
2
.
27
%
)
,
while
the
frequency
of
hyperdontia
was
most
common
in
premolars
.
The
prevalence
of
teeth
number
anomalies
was
4
.
84
%
of
dental
patients
.
Maxillary
lateral
incisors
were
most
common
missing
teeth
,
while
the
frequency
of
hyperdontia
was
most
common
in
premolars
.
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Diseases presenting
"consists of 4"
symptom
oligodontia
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