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Prevalence and distribution of dental anomalies in orthodontic patients.
[dentinogenesis imperfecta]
To
study
the
prevalence
and
distribution
of
dental
anomalies
in
a
sample
of
orthodontic
patients
.
The
dental
casts
,
intraoral
photographs
,
and
lateral
panoramic
and
cephalometric
radiographs
of
509
Egyptian
orthodontic
patients
were
studied
.
Patients
were
examined
for
dental
anomalies
in
number
,
size
,
shape
,
position
,
and
structure
.
The
prevalence
of
each
dental
anomaly
was
calculated
and
compared
between
sexes
.
Of
the
total
study
sample
,
32
.
6
%
of
the
patients
had
at
least
one
dental
anomaly
other
than
agenesis
of
third
molars
;
32
.
1
%
of
females
and
33
.
5
%
of
males
had
at
least
one
dental
anomaly
other
than
agenesis
of
third
molars
.
The
most
commonly
detected
dental
anomalies
were
impaction
(
12
.
8
%
)
and
ectopic
eruption
(
10
.
8
%
)
.
The
total
prevalence
of
hypodontia
(
excluding
third
molars
)
and
hyperdontia
was
2
.
4
%
and
2
.
8
%
,
respectively
,
with
similiar
distributions
in
females
and
males
.
Gemination
and
accessory
roots
were
reported
in
this
study
;
each
of
these
anomalies
was
detected
in
0
.
2
%
of
patients
.
In
addition
to
genetic
and
racial
factors
,
environmental
factors
could
have
more
important
influence
on
the
prevalence
of
dental
anomalies
in
every
population
.
Impaction
,
ectopic
eruption
,
hyperdontia
,
hypodontia
,
and
microdontia
were
the
most
common
dental
anomalies
,
while
fusion
and
dentinogenesis
imperfecta
were
absent
.
Diseases
Validation
Diseases presenting
"commonly detected dental anomalies"
symptom
dentinogenesis imperfecta
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