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ORIGINAL RESEARCH article

Front. Surg.
Sec. Reconstructive and Plastic Surgery
Volume 11 - 2024 | doi: 10.3389/fsurg.2024.1384207

Analysis of maxillary teeth and soft tissue profiles among Tibetan and Han Chinese females with facial symmetry for orthodontic treatment planning

Provisionally accepted
Lijia Deng Lijia Deng 1Jinmei Lei Jinmei Lei 2Minjie Li Minjie Li 3Hongjie Song Hongjie Song 1Hong He Hong He 2*
  • 1 Chengdu Second People's Hospital, Chengdu, China
  • 2 School of Stomatology, Wuhan University, Wuhan, Hubei Province, China
  • 3 Affiliated Stomatological Hospital, Southern Medical University, Guangzhou, China

The final, formatted version of the article will be published soon.

    The evaluation of maxillary teeth and soft tissue profiles is a critical component of orthodontic diagnosis and treatment planning. This study aimed to evaluate the correlation between the sagittal position of maxillary anterior teeth and facial profile esthetics among Tibetan and Han Chinese adult females for optimizing orthodontic diagnosis and treatment planning. A total of 100 Tibetan Chinese and 100 Han Chinese adult females with good facial symmetry were recruited. The smiling facial profile images with the maxillary central incisors and forehead in full view were taken based totally on the same standard. The photo measurement and head position were adjusted using the pictureenhancing software. The reference traces associated with forehead inclinations were utilized to assess the anteroposterior (AP) positions of the maxillary central incisors. The results showed that a round forehead was the dominant forehead shape for Tibetan (93%) and Han (55%) Chinese females. In Tibetan females, 85% of the maxillary central incisors were found to be located between the forehead's anterior limit line (the Fall line) and the goal anterior limit line (the Gall line), with 15% located posterior to the Fall line. This distribution manifested a strong association with incisor position and forehead inclination (R 2 = 0.742). In Han females, 83% of the maxillary central incisors were located between the Fall line and the Gall line, with 12% posterior to the Fall line and 5% anterior to the Gall line. The positions of the maxillary central incisors exhibited a strong relationship with forehead inclination (R 2 = 0..827). The maxillary central incisors were close to the aesthetic line in both ethnic groups, while forehead inclinations were correlated with AP maxillary incisor position. These findings demonstrated that there was a close relationship between the incisor position of Tibetan and Han females with facial symmetry and the forehead FFA factor, indicating a reference in oral hard and soft tissues for optimizing orthodontic diagnosis and treatment planning in terms of facial contour.

    Keywords: teeth, Forehead, soft tissue, Facial, Orthodontic

    Received: 19 Feb 2024; Accepted: 19 Jul 2024.

    Copyright: © 2024 Deng, Lei, Li, Song and He. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Hong He, School of Stomatology, Wuhan University, Wuhan, 430079, Hubei Province, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.