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Total inferior border ostectomy versus T-shape genioplasty for chin narrowing combined with mandibular contouring

  • Author Footnotes
    1 Yu Wang and Yingyou He are co-first authors.
    Y. Wang
    Footnotes
    1 Yu Wang and Yingyou He are co-first authors.
    Affiliations
    Department of Oral and Maxillofacial Surgery, the Affiliated Stomatological Hospital of Guizhou Medical University, Guiyang, China

    State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
    Search for articles by this author
  • Author Footnotes
    1 Yu Wang and Yingyou He are co-first authors.
    Y. He
    Footnotes
    1 Yu Wang and Yingyou He are co-first authors.
    Affiliations
    State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
    Search for articles by this author
  • M.Q.H. Al-Watary
    Affiliations
    State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
    Search for articles by this author
  • D. Bi
    Affiliations
    State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
    Search for articles by this author
  • L. Song
    Affiliations
    State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
    Search for articles by this author
  • J. Li
    Correspondence
    Correspondence to: State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
    Affiliations
    State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Orthognathic and TMJ Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
    Search for articles by this author
  • Author Footnotes
    1 Yu Wang and Yingyou He are co-first authors.

      Abstract

      The objective of this study was to compare the indications and outcomes of the total inferior border ostectomy and T-shape genioplasty. A retrospective study was conducted using the clinical notes and records of patients who underwent total inferior border ostectomy (group 1, n = 42) and T-shape genioplasty (group 2, n = 60). The outcomes were evaluated by assessment of computed tomography images combined with medical records and photographs. Lower facial height, chin width, chin symmetry, and facial proportions, as well as patient satisfaction and complications were investigated. The data were collected preoperatively and 6–24 months postoperatively. All 102 patients showed an improved lower facial contour. No severe complications were observed during the follow-up period. Although the postoperative lower to midfacial height ratios were similar in the two groups (P = 0.080), both the preoperative and postoperative chin width to lower facial height ratios were lower in group 1 (both P < 0.001). A larger amount of chin narrowing, as well as better chin symmetry were observed in group 1 (P < 0.001). In conclusion, compared to the T-shape genioplasty, the total inferior border ostectomy is well suited for a longer, wider, and more asymmetrical chin. The surgical options should be considered and chosen quantitatively to achieve aesthetically pleasing results.

      Keywords

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      References

        • Baek S.M.
        • Kim S.S.
        • Bindiger A.
        The prominent mandibular angle: preoperative management, operative technique, and results in 42 patients.
        Plast Reconstr Surg. 1989; 83: 272-280
        • Hsu Y.C.
        • Li J.
        • Hu J.
        • Luo E.
        • Hsu M.S.
        • Zhu S.
        Correction of square jaw with low angles using mandibular “V-line” ostectomy combined with outer cortex ostectomy.
        Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010; 109: 197-202
        • Liu D.
        • Huang J.
        • Shan L.
        • Wang J.
        Intraoral curved ostectomy for prominent mandibular angle by grinding, contiguous drilling, and chiseling.
        J Craniofac Surg. 2011; 22: 2109-2113
        • Park S.
        • Noh J.H.
        Importance of the chin in lower facial contour: narrowing genioplasty to achieve a feminine and slim lower face.
        Plast Reconstr Surg. 2008; 122: 261-268
        • Lee S.W.
        • Ahn S.H.
        Angloplasty revision: importance of genioplasty for narrowing of the lower face.
        Plast Reconstr Surg. 2013; 132: 435-442
        • Lee S.
        • Kim B.K.
        • Baek R.M.
        • Han J.
        Narrowing and lengthening genioplasty with pedicled bone graft in contouring of the short and wide lower face.
        Aesthetic Plast Surg. 2013; 37: 139-143
        • Lee T.S.
        • Kim H.Y.
        • Kim T.H.
        • Lee J.H.
        • Park S.
        Contouring of the lower face by a novel method of narrowing and lengthening genioplasty.
        Plast Reconstr Surg. 2014; 133: 274e-282e
        • Li J.
        • Hsu Y.
        • Khadka A.
        • Hu J.
        • Wang D.
        • Wang Q.
        Contouring of a square jaw on a short face by narrowing and sliding genioplasty combined with mandibular outer cortex ostectomy in Orientals.
        Plast Reconstr Surg. 2011; 127: 2083-2092
        • Jiang N.
        • Hsu Y.
        • Khadka A.
        • Hu J.
        • Wang D.
        • Wang Q.
        • Li J.
        Total or partial inferior border ostectomy for mandibular contouring: indications and outcomes.
        J Craniomaxillofac Surg. 2012; 40: e277-e284
        • Lai C.
        • Jin X.
        • Zong X.
        • Song G.
        En-bloc U-shaped osteotomy of the mandible and chin for the correction of a prominent mandibular angle with long chin.
        J Craniofac Surg. 2019; 30: 1359-1363
        • Zhang C.
        • Teng L.
        • Chan F.C.
        • Xu J.J.
        • Lu J.J.
        • Xie F.
        • Zhao J.Y.
        • Xu M.B.
        • Jin X.L.
        Single stage surgery for contouring the prominent mandibular angle with a broad chin deformity: en-bloc mandibular angle–body–chin curved ostectomy (MABCCO) and outer cortex grinding (OCG).
        J Craniomaxillofac Surg. 2014; 42: 1225-1233
        • Park S.
        Facial bone contouring surgery: a practical guide.
        Springer Nature, Singapore2018: 4
        • Fu X.
        • Qiao J.
        • Girod S.
        • Niu F.
        • Liu J.F.
        • Lee G.K.
        • Gui L.
        Standardized protocol for virtual surgical plan and 3-dimensional surgical template-assisted single-stage mandible contour surgery.
        Ann Plast Surg. 2017; 79: 236-242
        • Lee T.S.
        • Kim H.Y.
        • Kim T.
        • Lee J.H.
        • Park S.
        Importance of the chin in achieving a feminine lower face: narrowing the chin by the “mini V-line” surgery.
        J Craniofac Surg. 2014; 25: 2180-2183
        • Li J.
        • Hsu Y.
        • Khadka A.
        • Hu J.
        • Wang Q.
        • Wang D.
        Surgical designs and techniques for mandibular contouring based on categorisation of square face with low gonial angle in Orientals.
        J Plast Reconstr Aesthet Surg. 2012; 65: e1-e8
        • Mao X.
        • Fu X.
        • Niu F.
        • Chen Y.
        • Jin Q.
        • Qiao J.
        • Gui L.
        Three-dimensional analysis of mandibular angle classification and aesthetic evaluation of the lower face in Chinese female adults.
        Ann Plast Surg. 2018; 81: 12-17