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Updated: May 6, 2026

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
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Angled Screws With Locking Plates-An Alternative Fixation for Minimally Invasive Mandibular Orthognathic Surgery.

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Angled screws with locking plates provide stable fixation in minimally invasive orthognathic surgery (MIOS). This study found no complications or neurosensory issues after mandibular advancement surgery.

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Orthognathic Surgery
  • Minimally Invasive Surgery

Background:

  • Orthognathic surgery aims to correct jaw discrepancies.
  • Minimally invasive orthognathic surgery (MIOS) offers benefits like reduced trauma.
  • Stable fixation is crucial for successful surgical outcomes in MIOS.

Purpose of the Study:

  • To evaluate the short-term stability of angled screws with locking plates.
  • To assess fixation following bilateral sagittal split osteotomy using the anterior oblique technique in MIOS.
  • To determine the safety and efficacy of this technique in bimaxillary surgery.

Main Methods:

  • Retrospective study of 20 patients undergoing bimaxillary surgery with mandibular advancement.
  • Preoperative and postoperative computed tomography scans were analyzed.
  • Clinical evaluation of occlusion, temporomandibular joint function, neurosensory status, and complications over a 4-month follow-up.

Main Results:

  • Mean mandibular advancement was 7.2 mm (range: 2.5-13.2 mm).
  • All patients achieved stable occlusion without temporomandibular joint dysfunction.
  • No instances of dysesthesia, hyperesthesia, or anesthesia were reported at 4 months.

Conclusions:

  • Angled screws with locking plates demonstrate satisfactory short-term behavior in MIOS.
  • This fixation method is a viable alternative for orthognathic surgeries, particularly MIOS.
  • Further long-term studies are recommended to confirm these findings.