The Influence of the Maxillary Posterior Region on Smile Aesthetics in a Chinese Cohort

Ning Wei; Cui Wang; Yanling Zhang; Yiping Wei; Wenjie Hu; Xu Yang; Kwok-Hung Chung

International Dental Journal (Oct 2022)

The Influence of the Maxillary Posterior Region on Smile Aesthetics in a Chinese Cohort

Ning Wei,
Cui Wang,
Yanling Zhang,
Yiping Wei,
Wenjie Hu,
Xu Yang,
Kwok-Hung Chung

Affiliations

Ning Wei: Department of Periodontology, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
Cui Wang: Department of Periodontology, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
Yanling Zhang: Department of Periodontology, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
Yiping Wei: Department of Periodontology, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
Wenjie Hu: Department of Periodontology, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China; Corresponding author. Department of Periodontology, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing key Laboratory of Digital Stomatology, 22 Zhongguancun Avenue South, Haidian District, Beijing 100081, China.
Xu Yang: Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
Kwok-Hung Chung: Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, Washington, USA

Journal volume & issue: Vol. 72, no. 5
pp. 659 – 666

Abstract

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Objectives: The aim of this research was to establish standard norms for posterior smile-related characteristics including posterior smile line (PSL), the most posterior teeth displayed, buccal corridor ratio (BCR), and buccal corridor symmetry (BCS) and investigate its aesthetic contributions to smile attractiveness in a Chinese population. Materials and methods: From digitally recorded dynamic smile videos of young Chinese participants, 188 standardised full-smile images were captured and then aesthetically evaluated by 22 laypersons using a visual analog scale (VAS). Four smile-related variables in the posterior region were analysed. VAS data were compared between subgroups to test the influence of these variables on smile aesthetics with significance level of P .05). Conclusions: Maxillary posterior gingiva and teeth displayed influence smile attractiveness evaluated by laypersons, which should be given attention when treating patients with compromised aesthetics, especially those displaying average or low anterior smile lines.

Published in International Dental Journal

ISSN: 0020-6539 (Print); 1875-595X (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Medicine: Dentistry
Website: https://www.journals.elsevier.com/international-dental-journal

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