Influence of dental midline deviation with respect to facial flow line on smile esthetics-A cross-sectional study.

IF 3.2 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE
Kanza Tahir, Afeefa Abul Barakaat, Umair Shaukat, Muhammad Maaz, Mubassar Fida, Rashna Hoshang Sukhia
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Abstract

Background/objective: A contemporary concept states that dental midline deviation towards the direction of facial flow line (FFL) can mask the compromised smile esthetics. This study aimed to identify a range of midline deviations that can be perceived towards or away from the FFL influencing smile esthetics.

Materials and methods: A cross-sectional study was conducted using a frontal smile photograph of an adult female. The photograph was altered on Adobe Photoshop software into six different photographs by deviating the dental midlines towards and away from the FFL. A constant deviation of chin towards the left side was incorporated in all the photographs. Forty-three laypersons (LP) and dental professionals (DPs) evaluated those photographs. Independent t-test was used to compare the perception of dental midline deviation between LP and DPs. Simple linear regression was run to identify the factors associated with the scoring.

Results: A statistically significant difference was observed for picture two with 4 mm towards FFL in the perception of midline deviation between LP and DPs. LP could not perceive the midline deviations up to 4 mm while DPs were able to perceive deviations above 2 mm. The greater the age the better the scores were and female raters had a greater inclination towards poor scores.

Conclusions: From 2 to 4 mm of midline deviation towards the FFL can be tolerated by LP and DPs.

Clinical significance: These findings underscore the importance of considering facial symmetry in orthodontic and cosmetic dental treatments to optimize smile esthetics.

牙齿中线与面部流线的偏差对微笑美学的影响--一项横断面研究。
背景/目的:当代有一种观点认为,牙齿中线向面部流线(FFL)方向的偏差会掩盖微笑美学的缺陷。本研究旨在确定一系列影响微笑美学的中线偏离,这些偏离可被认为是朝向或偏离面部流线:使用一名成年女性的正面微笑照片进行横断面研究。通过将牙齿中线偏向或偏离 FFL,在 Adobe Photoshop 软件上将照片修改成六张不同的照片。在所有照片中,下巴始终偏向左侧。43 名非专业人士(LP)和牙科专业人士(DP)对这些照片进行了评估。使用独立 t 检验比较非专业人士和牙科专业人士对牙齿中线偏差的感知。通过简单线性回归来确定与评分相关的因素:结果:在统计意义上,观察到第 2 张照片中,LP 和 DP 对中线偏差的感知有明显差异。LP无法感知4毫米以内的中线偏差,而DP能够感知2毫米以上的偏差。年龄越大,得分越高,女性评分者更倾向于低分:临床意义:这些发现强调了在正畸和牙齿美容治疗中考虑面部对称以优化微笑美学的重要性。
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来源期刊
Journal of Esthetic and Restorative Dentistry
Journal of Esthetic and Restorative Dentistry 医学-牙科与口腔外科
CiteScore
6.30
自引率
6.20%
发文量
124
审稿时长
>12 weeks
期刊介绍: The Journal of Esthetic and Restorative Dentistry (JERD) is the longest standing peer-reviewed journal devoted solely to advancing the knowledge and practice of esthetic dentistry. Its goal is to provide the very latest evidence-based information in the realm of contemporary interdisciplinary esthetic dentistry through high quality clinical papers, sound research reports and educational features. The range of topics covered in the journal includes: - Interdisciplinary esthetic concepts - Implants - Conservative adhesive restorations - Tooth Whitening - Prosthodontic materials and techniques - Dental materials - Orthodontic, periodontal and endodontic esthetics - Esthetics related research - Innovations in esthetics
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