Bora Prateeksha, Agrawal Poonam, Bagga Dinesh Kumar, Priya Kanak, Singh Neelam, Bhardwaj Rishibha
Department of Orthodontics and Dentofacial Orthopedics, School of Dental Sciences, Sharda University, Greater Noida, Uttar Pradesh, India.
Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India.
J Orthod Sci. 2024 Feb 16;13:8. doi: 10.4103/jos.jos_71_23. eCollection 2024.
One of the major objectives of orthodontic treatment is to improve facial attractiveness. To orthodontists, this means that the nose, lips, and chin form an attractive outline when the faces are viewed from one side. The aim of the study is to evaluate the influence of lip inclination on perceived attractiveness using North Indian observer ratings on profile silhouettes.
A profile photograph of an Indian male and female were converted to silhouettes for the study using computer software. The lip inclination of the idealized profile image was altered in two-degree increments to create a series of profiles with different upper lip inclination angles and rated by laypersons on a Likert scale.
An angle of 79° was deemed to be neither attractive nor unattractive. Therefore, within the range of 65°-75°, the pictures were deemed acceptable. Angles above or below this range, up to 91° were perceived as slightly unattractive, and anything outside the range of 93°-105° was deemed very unattractive.
The study is not generalizable to ethnic groups other than the North Indian population. Another limitation is the inability to visualize the entire face for a complete facial analysis.
An upper lip inclination of 75°-85° in the male profile was associated with perceived attractiveness in all three groups whereas it was in the range of 65°-75° for a female profile. An upper lip inclination angle ranging from 95° to 105° was associated with unattractiveness in all three groups of observers and requires correctional intervention.
正畸治疗的主要目标之一是改善面部美观度。对于正畸医生而言，这意味着从侧面观察面部时，鼻子、嘴唇和下巴能形成一个具有吸引力的轮廓。本研究的目的是利用北印度观察者对侧面轮廓的评分来评估唇部倾斜度对感知吸引力的影响。
使用计算机软件将一名印度男性和一名女性的侧面照片转换为轮廓图用于研究。将理想化轮廓图像的唇部倾斜度以两度的增量进行改变，以创建一系列具有不同上唇倾斜角度的轮廓，并由外行人采用李克特量表进行评分。
79°的角度被认为既不具有吸引力也不难看。因此，在65°-75°的范围内，图片被认为是可接受的。高于或低于此范围、直至91°的角度被视为略有不美观，而在93°-105°范围之外的任何角度都被认为非常不美观。
该研究不适用于北印度人群以外的其他种族群体。另一个局限性是无法可视化整个面部以进行完整的面部分析。
男性侧面轮廓中上唇倾斜度为75°-85°与所有三组中的感知吸引力相关，而女性侧面轮廓的该倾斜度范围为65°-75°。上唇倾斜角度在95°至105°之间与所有三组观察者的不美观相关，需要进行矫正干预。
