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KJO Korean Journal of Orthodontics

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pISSN 2234-7518
eISSN 2005-372X
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Korean J Orthod

Published online June 23, 2021

Copyright © The Korean Association of Orthodontists.

Effect of lower facial height and anteroposterior lip position on esthetic preference in Korean silhouette profiles

Kyung-Hyun Seo, Deuk-Hun So, Kyeong-Tae Song, Sung-Kwon Choi, Kyung-Hwa Kang

Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea

Correspondence to:Kyung-Hwa Kang
Professor, Department of Orthodontics, School of Dentistry, Wonkwang University, 895 Muwang-ro, Iksan 54538, Korea.
Tel +82-63-859-2962 Fax +82-303-3440-2962 e-mail pigtail@wku.ac.kr
* This study was supported by Wonkwang University in 2020

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective : The purpose of this study was to evaluate esthetic preference with modifying Korean average silhouette profiles.
Methods : Korean average male and female profile was modified by changing the lower facial height and the anteroposterior lip position to produce nine types of profiles, respectively. In order to test intrarater reliability, average profile was copied once more. 30 adult orthodontic patients, 30 dental students, 30 orthodontists, and 30 dentists excluding orthodontists were asked to answer questionnaire. In questionnaire, numerical rating scale, which was composed of score 0 to 10, was placed to rate the degree of preference. The data were statistically analyzed by means of intraclass correlation coefficient (ICC), independent t-test, and one-way ANOVA.
Results : The ICC of overall intrarater reliability was 0.629. In several profiles, significantly higher scores were given to male profiles than female profiles (p <0.05). No significant differences were found in scores for all profiles among four rater groups. In short profiles, significantly highest score was given to retruded profile, and in vertically average and long profiles, significantly highest score was given to horizontally average profile (p < 0.001). In all profiles, significantly lowest score was given to protruded profile (p < 0.001).
Conclusion : Overall intrarater reliability was good. In several profiles, male profiles were evaluated more esthetic than female profiles. In short profiles, retruded profiles were preferred, and in vertically average and long profiles, horizontally average profiles were preferred. In all profiles, protruded profiles were not preferred.

Keywords: Esthetics, Lower facial height, Anteroposterior lip position

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Korean J Orthod

Published online June 23, 2021

Copyright © The Korean Association of Orthodontists.

Effect of lower facial height and anteroposterior lip position on esthetic preference in Korean silhouette profiles

Kyung-Hyun Seo, Deuk-Hun So, Kyeong-Tae Song, Sung-Kwon Choi, Kyung-Hwa Kang

Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea

Correspondence to:Kyung-Hwa Kang
Professor, Department of Orthodontics, School of Dentistry, Wonkwang University, 895 Muwang-ro, Iksan 54538, Korea.
Tel +82-63-859-2962 Fax +82-303-3440-2962 e-mail pigtail@wku.ac.kr
* This study was supported by Wonkwang University in 2020

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective : The purpose of this study was to evaluate esthetic preference with modifying Korean average silhouette profiles.
Methods : Korean average male and female profile was modified by changing the lower facial height and the anteroposterior lip position to produce nine types of profiles, respectively. In order to test intrarater reliability, average profile was copied once more. 30 adult orthodontic patients, 30 dental students, 30 orthodontists, and 30 dentists excluding orthodontists were asked to answer questionnaire. In questionnaire, numerical rating scale, which was composed of score 0 to 10, was placed to rate the degree of preference. The data were statistically analyzed by means of intraclass correlation coefficient (ICC), independent t-test, and one-way ANOVA.
Results : The ICC of overall intrarater reliability was 0.629. In several profiles, significantly higher scores were given to male profiles than female profiles (p <0.05). No significant differences were found in scores for all profiles among four rater groups. In short profiles, significantly highest score was given to retruded profile, and in vertically average and long profiles, significantly highest score was given to horizontally average profile (p < 0.001). In all profiles, significantly lowest score was given to protruded profile (p < 0.001).
Conclusion : Overall intrarater reliability was good. In several profiles, male profiles were evaluated more esthetic than female profiles. In short profiles, retruded profiles were preferred, and in vertically average and long profiles, horizontally average profiles were preferred. In all profiles, protruded profiles were not preferred.

Keywords: Esthetics, Lower facial height, Anteroposterior lip position