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Related Experiment Videos

Postoperative changes after bilateral mandibular osteotomies: a computed tomography study.

E Lund1, S Sindet-Pedersen

  • 1Department of Radiology, Aarhus University Hospital, Denmark.

Oral Surgery, Oral Medicine, and Oral Pathology
|May 1, 1989
PubMed
Summary
This summary is machine-generated.

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Mandibular ramus osteotomy significantly reduces oropharynx size and increases cheek swelling due to masseter muscle edema. Postoperative changes in the temporomandibular joint space were also observed.

Area of Science:

  • Oral and Maxillofacial Surgery
  • Medical Imaging
  • Anatomy

Background:

  • Bilateral osteotomy of the mandibular ramus is a surgical procedure with potential impacts on airway dimensions and facial soft tissues.
  • Understanding the volumetric and dimensional changes following this surgery is crucial for patient outcomes and surgical planning.

Purpose of the Study:

  • To evaluate the volumetric changes in the oropharynx, cheek, and masseter muscle following bilateral osteotomy of the ramus of the mandible.
  • To assess the impact of the surgical procedure on the temporomandibular joints (TMJs).

Main Methods:

  • Preoperative and postoperative computed tomography (CT) scans were utilized for volumetric analysis.
  • Measurements included maximum cheek and oropharynx area, masseter muscle thickness, and subcutaneous tissue thickness.

Related Experiment Videos

  • Temporomandibular joint space was also measured.

    • Main Results:

    • A significant postoperative reduction in oropharyngeal lumen area (approximately 43%) was observed.
    • Average cheek swelling was 61%, correlated with the well-vascularized masseter muscle.
    • A slight widening of the temporomandibular joint space was noted postoperatively.

    Conclusions:

    • Bilateral mandibular ramus osteotomy leads to substantial reduction in oropharyngeal space and significant cheek swelling.
    • Postoperative edema of the masseter muscle contributes to the observed cheek swelling.
    • The procedure may also result in subtle alterations of the temporomandibular joint space.