Section of Dentistry (Orthodontics), Department of Surgery, The Aga Khan University and Hospital, Karachi, Pakistan.
Section of Dentistry (Orthodontics), Department of Surgery, The Aga Khan University and Hospital, Karachi, Pakistan.
Am J Orthod Dentofacial Orthop. 2022 Mar;161(3):381-389. doi: 10.1016/j.ajodo.2020.09.030. Epub 2021 Oct 9.
Balanced facial proportions and hard tissue relationships are important factors in facial attractiveness. The objective of this study was to determine the most pleasing maxillary incisal inclination (MII) on the lateral profile and the impact of various lower anterior facial height (LAFH) ratios (at rest and with a smile) on facial attractiveness.
This cross-sectional study was performed with 66 raters equally divided into 3 panels: general dentists (GD), orthodontic residents (OR), and laypersons (LP). Lateral profile view photographs of an Asian man were modified using Photoshop software (Adobe Systems, San Jose, Calif) to show altered MII and LAFH ratios at rest and when smiling. Subjective evaluations of facial attractiveness were performed by raters using a visual analog scale. Kruskal-Wallis test was used to compare esthetic scores among raters, and the Mann-Whitney U test was applied to compare ES between groups.
Kruskal-Wallis test showed significant differences in esthetic scores among raters for -10° (P = 0.028) and -15° MII (P = 0.030). Similarly, significant differences were found in ES for 8% LAFH ratio (P = 0.022), and 4% LAFH ratio (P = 0.035) at rest. Mann-Whitney U test showed significant differences between raters for -10° and -15° MII and between 8% and 4% LAFH ratio at rest.
All groups rated -5° inclinations to be most attractive. General dentists and orthodontic residents found normal LAFH to be the most attractive, whereas long facial height was less attractive with smile. In addition, smile had a camouflaging effect on LAFH.
均衡的面部比例和硬组织关系是面部吸引力的重要因素。本研究的目的是确定侧貌中最令人满意的上颌切牙倾斜度（MII），以及不同的上前牙牙槽骨高度（LAFH）比例（在休息和微笑时）对面部吸引力的影响。
本横断面研究共纳入 66 名评估者，平均分为 3 组：普通牙医（GD）、正畸住院医师（OR）和非专业人士（LP）。使用 Photoshop 软件（Adobe Systems，San Jose，Calif）对一名亚洲男性的侧貌照片进行修改，以显示休息和微笑时改变的 MII 和 LAFH 比例。评估者使用视觉模拟量表对面部吸引力进行主观评估。采用 Kruskal-Wallis 检验比较评估者的美学评分，采用 Mann-Whitney U 检验比较组间 ES。
Kruskal-Wallis 检验显示，评估者在-10°（P=0.028）和-15° MII（P=0.030）的美学评分存在显著差异。同样，在休息时 8%LAFH 比例（P=0.022）和 4%LAFH 比例（P=0.035）的 ES 也存在显著差异。Mann-Whitney U 检验显示，-10°和-15° MII 以及休息时 8%和 4% LAFH 比例在评估者之间存在显著差异。
所有组都认为-5°的倾斜度最具吸引力。普通牙医和正畸住院医师认为正常的 LAFH 最具吸引力，而长面高在微笑时则不太吸引人。此外，微笑对 LAFH 有掩饰作用。
