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    This study aimed to identify the preferred range of lower lip-chin prominence angles in the Korean population and evaluate the effect of the individual lower lip-chin prominence angle on perceptions of esthetic chin profile.Chin prominence silhouettes were used to assess the lower lip-chin prominence preference. The observers randomly categorized each image as (1) normal, (2) slightly abnormal but not requiring surgical correction, and (3) abnormal and requiring surgery. Individual lower-chin prominence angles of all observers were analyzed using standardized clinical photographs.The normal range of lower lip-chin prominence angle is 0° to 25°; socially acceptable range is 0° to -10°, 25° to 40°; range needing surgery is -10° to -30° and 40° to 45°. Women are more tolerant to chin protrusion. A protrusive chin is more acceptable in observers with retrusive chin profile.Skeletal Class II profile is more acceptable than skeletal Class III in the Korean population. The individual lower-chin prominence angle could affect perception of desired surgery. These findings indicate that patient-specific treatment planning is important in achieving satisfaction in chin surgery. Copyright © 2021 by Mutaz B. Habal, MD.


    Jae-Yeol Lee, Sang Hee Han, Youn-Kyung Choi, Jinmi Kim, Soo-Byung Park, Yong-Il Kim. Effect of Observer's Sex and Chin Prominences on the Perception of the Lower Lip-Chin Prominence Angle. The Journal of craniofacial surgery. 2022 Mar-Apr 01;33(2):620-623

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    PMID: 34519713

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