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Improvement of Chin Profile after Mandibular Setback and Reduction Genioplasty for Correction of Prognathism and Long Chin

  • Original Article
  • Craniofacial/Maxillofacial
  • Published:
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Abstract

Background

This study evaluated the changes in the chin profile after using mandibular setback and vertical chin reduction genioplasty to correct mandibular prognathism associated with a long and flat chin.

Methods

Sixteen consecutive patients (6 male and 10 female) underwent surgery at a mean age of 22.6 years (range = 18.2–27.8 years). The evaluation consisted of hard and soft tissue analysis before and after treatment.

Results

The results showed that improvement in facial profile, chin contour, and dental occlusion was achieved. After an average of 9.4-mm mandibular setback and 5.1-mm vertical osseous chin reduction, the thickness of soft tissue pogonion was increased by 4.0 mm, the supramentale thickness was increased by 1.8 mm, and lower-lip thickness was increased by 1.6 mm. Thus, the mentolabial fold increased from 3.4 to 4.7 mm and the mentolabial angle decreased from 153.4 to 136.9°. The vertical lip:chin ratio became normal.

Conclusion

The results of this study demonstrated that mandibular setback combined with vertical chin reduction genioplasty offers an alternative for the treatment of patients suffering from mandibular prognathism with a long, nonprojecting chin.

Level of Evidence IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.

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Conflict of interest

The authors have no conflicts of interest or financial ties to disclose.

Author information

Authors and Affiliations

  1. Department of Orthodontics, Chang Gung Memorial Hospital, and Chang Gung University, Taoyuan, Taiwan

    Cheng-Ting Ho

  2. Department of Orthodontics, and Craniofacial Research Center, Chang Gung Memorial Hospital, and Chang Gung University, Taoyuan, Taiwan

    Chiung-Shing Huang

  3. Department of Plastic and Reconstructive Surgery, and Craniofacial Research Center, Chang Gung Memorial Hospital, and Chang Gung University, 5 Fu-Shin Street, Kwei Shan, Taoyuan, 333, Taiwan

    Lun-Jou Lo

Authors
  1. Cheng-Ting Ho
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  2. Chiung-Shing Huang
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  3. Lun-Jou Lo
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Correspondence to Lun-Jou Lo.

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Ho, CT., Huang, CS. & Lo, LJ. Improvement of Chin Profile after Mandibular Setback and Reduction Genioplasty for Correction of Prognathism and Long Chin. Aesth Plast Surg 36, 1198–1206 (2012). https://doi.org/10.1007/s00266-012-9933-y

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  • DOI: https://doi.org/10.1007/s00266-012-9933-y

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