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A Novel Study on Alar Mobility of HAN Female by 3dMD Dynamic Surface Imaging System

  • Original Article
  • Rhinoplasty
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Abstract

Aim

The aim of this study is to conduct a quantitative analysis on alar mobility of HAN females and provided referenced materials for alar dynamic aesthetic.

Methods

One hundred and fifty healthy HAN females without rhinoplasty, nasal injury, nasal deformity and craniofacial deformity were included in this study. 3dMD surface imaging system was used for anthropometric analysis. All participants were instructed to perform the desired dynamic facial expression from rest to maximum smile without reveling teeth and recorded by 3dMD dynamic surface imaging system simultaneously. Two frames of rest status and alar maximum enlargement were selected for measuring alar width, alar base width and inner-canthal distance. The difference between two status represented alar mobility, which was generated through equation: \({\text{MOBILITY}} = \frac{{{\text{WIDTH}}_{{{\text{smile}}}} - {\text{WIDTH}}_{{{\text{rest}}}} }}{{{\text{WIDTH}}_{{{\text{rest}}}} }} \times 100\%\).

Results

Alar mobility consisted of alar flaring mobility and alar base mobility. The alar flaring mobility was (9.49 ± 4.90)%, reference range was(1.45, 17.53)% and regression equation between rest and maximum smile was Y = 7.953 + 0.886X (R2 = 0.641, p = 0.000); the alar base mobility was (17.94 ± 10.44)%, reference range was (0.88, 35.00)% and regression equation between rest and maximum smile was Y = 4.481 + 0.966X (R2 = 0.528, p = 0.000.

Conclusion

Asian alar anatomy has great distinction from Caucasian, processing conspicuous alar movement and damaging alar aesthetic dynamically. This study novelly defined alar mobility by three-dimensional anthropometric analysis, providing objective references for alar dynamic aesthetic and arousing plastic surgeons’ attention on keeping balance of static and dynamic aesthetic in rhinoplasty.

Level of Evidence IV

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Authors and Affiliations

  1. Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

    Yehong Zhong, Yijia Zhu, Taoran Jiang,  Jie Yuan, Liang Xu, Dejun Cao, Zheyuan Yu & Min Wei

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  1. Yehong Zhong
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  2. Yijia Zhu
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  3. Taoran Jiang
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  4. Jie Yuan
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  5. Liang Xu
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  6. Dejun Cao
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  7. Zheyuan Yu
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  8. Min Wei
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Corresponding authors

Correspondence to Dejun Cao, Zheyuan Yu or Min Wei.

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The authors declare that they have no conflict of interest to disclose.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine ethical committee (SH9H-2019-T286-2) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Zhong, Y., Zhu, Y., Jiang, T. et al. A Novel Study on Alar Mobility of HAN Female by 3dMD Dynamic Surface Imaging System. Aesth Plast Surg 46, 364–372 (2022). https://doi.org/10.1007/s00266-021-02386-1

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  • DOI: https://doi.org/10.1007/s00266-021-02386-1

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