SMILE AESTHETICS APPRECIATED BY LAYPERSONS
The objective of another study was to evaluate
the role of the posed smile in overall facial
esthetics, as determined by laypersons and
orthodontists. The presence of a malocclusion
has a negative impact on facial attractiveness.
Orthodontic correction of a malocclusion affects
overall facial esthetics positively. Laypeople
and orthodontists agree on what is attractive
(7). Other study shows that the orthodontically
treated subjects had significantly poorer smile
scores than the subjects with “normal occlusion.
The height of the upper lip to the upper central
incisor influenced the rating of the smile, the
most attractive smiles having the upper lip at
the height of the gingival margin of the upper
central incisor (8).
Some authors also try to evaluate the aesthetic
smile by determinating whether asymmetric
and symmetric anterior dental discrepancies
are detectable by dental professionals and
laypersons. Orthodontists were more critical
than dentists and laypeople when evaluating
asymmetric crown length discrepancies. A small
midline diastema was not rated as unattractive
by any group. Unilateral reduction of papillary
height was generally rated less attractive than
bilateral alteration Asymmetric alterations
make teeth more unattractive to not only
dental professionals but also the lay public (9).
Other study evaluated the hard- and soft-tissue
contributions to the esthetics of the posed
smile in growing patients seeking orthodontic
treatment. Vertical lip thickness proved to be
the most influential variable in smile aesthetics.
The significant relationship of incisor protrusion
with the vertical thickness of the vermilion
border of the upper lip must be considered
when planning orthodontic treatment (10).
Conclusion
This study helps us to establish a set of
dynamic norms for the aesthetics of smile
components. Thus, the parallelism of smile
arch with the upper lip smile, horizontal linear
smile, an anterior and posterior medium
smile height, the last visible tooth during
smile actions has to be the second premolar
and a medium buccal corridor are the most
aesthetic variants. The most unsightly variants
have been rated the follows: a reverse smile
arch of a hollow smile, a concave smile, an
anterior and posterior height smile, the last
visible tooth during smile actions is the first
molar and a smile with a wide buccal corridor.
For the success of orthodontic treatment , both
in terms of aesthetic, functional and occlusal is
very important for the orthodontist to know all
the details about the ideal aesthetic norms of
smile (1).
In this paper we wanted to emphasize the
importance of aesthetic norms of smile for
orthodontic treatment and summarize, if
possible the aesthetic smile canons of our
time.
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