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KMID : 1004520130290040347
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Journal of Dental Rehabilitation and Applied Science
2013 Volume.29 No. 4 p.347 ~ p.358
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Subjective Evaluation about Ideal Position of the Subnasale on Lateral Photos
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Kim Yi-dong
Jung Dong-Hwa
Cha Kyung-Suk
Lee Jin-Woo
Lee Sang-Min
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Abstract
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When analyzing soft tissue of the profile, Subnasale is often used as an important reference point. But there are few
studies on the ideal position of the Subnasale. Therefore, the purpose of this study is to present an objective reference of
the esthetic face relating to the change of Subnasale position in Koreans’ profile, and also to determine whether there is
concordance between professionals and laypersons in their perception of facial attractiveness.
The one determined as appropriate profile portion by experts of pictures taken in women in 20s was selected. The
photograph was modified changing the Subnasale anteroposteriorly on the plane perpendicular to the true vertical line,
while maintaining the nasolabial angle. The photographs were presented to a group of professionals (9 orthodontists) and
126 laypersons, who were asked to assess the facial attractiveness of the photographs on a VAS independently.
The conclusion was obtained.
1. The ideal position of the Subnasale is when the ratio of the distance Lateral canthus~Subnasale : Subnasale~
Pronasale is 1.769 : 1.
2. The ideal degrees between the true vertical line passing through Nasion and Subnasale is 5.5??
3. The professionals recognized every change in the ratio, but the laypersons couldn’t differentiate between the change
from 1.571 : 1 to 1.769 : 1.
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KEYWORD
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Soft tissue of the profile, Subnasale, Visual analogue scale
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