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Limitations of a method used for adolescent assessment of smile aesthetics.
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Summary
AIMS
:
To
establish
whether
adolescent
orthodontic
patients
with
hypodontia
have
a
preference
between
the
aesthetic
outcomes
of
two
treatment
strategies
for
lateral
incisor
agenesis
.
Standardized
photographs
of
pre-orthodontic
patients
with
missing
lateral
incisors
were
manipulated
to
produce
images
that
represented
space
opening
and
tooth
replacement
in
the
lateral
incisor
space
and
space
closure
with
canine
substitution
into
the
lateral
incisor
space
.
Adolescent
orthodontic
patients
with
hypodontia
were
recruited
to
assess
the
aesthetics
of
the
images
.
A
control
group
of
subjects
without
tooth
agenesis
was
recruited
.
Each
examiner
undertook
two
tests
to
assess
the
smile
aesthetics
of
the
images
:
(
1
)
rating
attractiveness
using
visual
analogue
scale
(
VAS
)
and
(
2
)
choice
of
preference
between
pairs
of
images
.
Difficulties
experienced
with
image
manipulation
and
poor
intra-examiner
reliability
of
the
VAS
make
interpretation
of
the
results
challenging
.
Care
should
be
taken
if
findings
are
used
to
aid
clinical
decisions
,
as
the
validity
of
the
main
findings
is
questionable
.
Results
suggest
that
although
adolescents
perceive
a
difference
in
the
aesthetic
result
of
space
opening
and
space
closure
for
missing
lateral
incisors
,
the
impact
on
the
smile
attractiveness
is
not
clinically
significant
.
When
forced
to
choose
between
the
aesthetics
of
space
opening
or
space
closure
,
the
majority
of
examiners
chose
space
opening
with
tooth
replacement
.
No
difference
was
found
in
smile
ratings
or
preferences
between
adolescents
with
hypodontia
and
those
with
no
missing
teeth
.
The
methods
used
in
this
study
may
not
be
reliable
for
adolescent
assessment
of
aesthetics
.
