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Two ways to correct bird-face deformity.

H L Obwegeser1, O Hadjianghelou

  • 1University of Zürich.

Oral Surgery, Oral Medicine, and Oral Pathology
|November 1, 1987
PubMed
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This study presents two surgical techniques for correcting bird-face deformity by elongating the lower jaw. Both methods achieve frontal lengthening, differing in how the mandibular body is extended, offering solutions for symmetric and asymmetric cases.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Plastic Surgery
  • Craniofacial Surgery

Background:

  • Bird-face deformity, characterized by micromandibularism, presents significant aesthetic and functional challenges.
  • Existing surgical corrections often focus on mandibular advancement, but specific techniques for body elongation vary.
  • Symmetric and asymmetric presentations require tailored approaches to address the underlying skeletal discrepancies.

Purpose of the Study:

  • To describe and compare two distinct surgical procedures for correcting bird-face deformity.
  • To detail methods for achieving mandibular body elongation in conjunction with anterior advancement genioplasty.
  • To illustrate the application of these techniques in both symmetric and asymmetric cases.

Main Methods:

Related Experiment Videos

  • Procedure 1: Elongation of the mandibular body posterior to the tooth-bearing area using extended sagittal split osteotomy.
  • Procedure 2: Elongation of the mandibular body within the tooth-bearing area via vertical osteotomy.
  • Both procedures incorporate one- or two-step advancement genioplasty for anterior lengthening.

    • Main Results:

    • Both described procedures effectively correct micromandibularism associated with bird-face deformity.
    • The choice of technique allows for tailored mandibular body elongation based on specific anatomical needs.
    • Clinical cases and diagrams demonstrate the successful application and outcomes of both surgical approaches.

    Conclusions:

    • Two viable surgical strategies exist for correcting bird-face deformity, addressing both symmetric and asymmetric presentations.
    • The described methods offer distinct approaches to mandibular body elongation, providing surgeons with versatile options.
    • Successful correction is achievable through careful selection and execution of either the sagittal split or vertical osteotomy techniques.