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A Reliable Method for Chin Augmentation by Mechanical Micronization of Lipoaspirates

  • Original Article
  • Facial Surgery
  • Published:
Aesthetic Plastic Surgery Aims and scope Submit manuscript

A Correction to this article was published on 16 June 2021

This article has been updated

Abstract

Background

Desire for improved aesthetic contour of the lower third of the face has resulted in an increase in chin augmentation. Although many fillers, including hyaluronic acid (HA), autologous fat and stromal vascular fraction gel (SVF-gel), have been used to improve facial morphology, chin augmentation requires fillers that provide greater support.

Methods

The elastic and viscous moduli of SVF-gel and Coleman fat were assessed in vitro by rheological testing, whereas their elasticity were evaluated in vivo by ultrasonic elastography. Results in vitro were compared with those of highly elastic HA (HE-HA) and highly viscous HA (HV-HA), whereas results in vivo were compared with HE-HA. Changes in chin volume, SVF-gel retention rate and absorptivity for at least 12 months were measured by 3D white light scanning. Questionnaires were administered to assess patient satisfaction.

Results

The elastic and viscous modulus of SVF-gel was, respectively, slightly lower than HE-HA and HV-HA but higher than the other two in vitro, with the elasticity of the three layers of SVF-gel lower than HE-HA but slightly higher than normal control in vivo. The average retention rate was 62.34±3.34% at 12 months. The absorptivity of 90% of the samples was <3% from 6 to 12 months, which was considered stable. Patients expressed satisfaction with their results.

Conclusion

SVF-gel has ideal rheologic characteristics in vitro, which has slightly higher elasticity than normal fat tissue of chin in vivo, and could keep well retention rate for chin augmentation in clinic.

Level of Evidence IV

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Acknowledgements

Thanks for the experimental site and equipment provided by The Plastic and Aesthetic Center, The First Affiliated Hospital of Harbin Medical University.

Funding

The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by Natural Science Foundation of Heilongjiang Province, China (QC2018102), and President Foundation of The First Affiliated Hospital of Harbin Medical University (2019B24).

Applied Technology Research and Development Project of Heilongjiang Province (GA20C019).

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Authors and Affiliations

  1. The Plastic and Aesthetic Center, The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin, 150000, Heilongjiang, People’s Republic of China

    Qing Wang, Xinyao Chen, Xinyue Wang, Yuyang Du, Ruoxue Bai, Sai Luo & Lijun Hao

  2. Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, 510515, Guangdong, People’s Republic of China

    Ye Li

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  1. Qing Wang
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Correspondence to Sai Luo or Lijun Hao.

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The study protocol was approved by the institutional review board.

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All patients provided informed consent.

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The original online version of this article was revised: Figure 6 was updated to replace duplicated image with the correct image.

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Wang, Q., Chen, X., Wang, X. et al. A Reliable Method for Chin Augmentation by Mechanical Micronization of Lipoaspirates. Aesth Plast Surg 45, 1507–1517 (2021). https://doi.org/10.1007/s00266-021-02237-z

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  • DOI: https://doi.org/10.1007/s00266-021-02237-z

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