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Related Experiment Videos

Second vertical osteotomy 15 years after initial operation.

L T Herman, D Sadowsky

    Journal of Oral Surgery (American Dental Association : 1965)
    |January 1, 1977
    PubMed
    Summary
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    This case study details mandibular prognathism correction 15 years post-surgery. Anatomical changes from the initial vertical osteotomy complicated the second surgical attempt, requiring specific modifications for successful treatment.

    Area of Science:

    • Oral and Maxillofacial Surgery
    • Orthognathic Surgery
    • Skeletal Deformity Correction

    Background:

    • Mandibular prognathism presents challenges in surgical correction, especially in cases with prior interventions.
    • Previous surgical attempts can lead to significant anatomical alterations, impacting subsequent treatments.

    Observation:

    • A patient presented with recurrent mandibular prognathism 15 years after an initial vertical osteotomy via an extraoral approach.
    • Anatomical changes included a reduced sigmoid notch length, posterior coronoid process displacement, and increased mandibular ramus width.

    Findings:

    • The observed anatomical changes complicated segment overlap and limited further mandibular setback without coronoidectomy.
    • Successful correction was achieved by performing osseous reductions and coronoidectomy during the second surgical procedure.

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    Implications:

    • This case highlights the importance of recognizing and addressing post-surgical anatomical changes in recurrent mandibular prognathism.
    • Coronoidectomy may be a necessary adjunct in complex revision orthognathic surgeries to achieve desired outcomes.