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Related Experiment Video

Updated: Aug 12, 2025

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device
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Computer Guided Generated Dual-Purpose Splint for Bilateral Sagittal Split Osteotomy.

Mamdouh Ahmed1, Sherif Ali1, Sara Soliman2

  • 1Oral and Maxillofacial Surgery, Cairo University, Cairo, Egypt.

Journal of Maxillofacial and Oral Surgery
|January 27, 2023
PubMed
Summary

A novel dual-purpose splint effectively guides both segments during bilateral sagittal split osteotomy. This computer-generated device ensures accurate condylar positioning, improving surgical outcomes for orthognathic surgery patients.

Keywords:
Computer assisted surgeryCondylar sagOrthognathic surgery BSSOProximal segmentRapid prototyping

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) in Orthognathic Surgery

Background:

  • Bilateral sagittal split osteotomy (BSSO) is a common procedure for correcting jaw discrepancies.
  • Precise positioning of bone segments is crucial for successful BSSO outcomes.
  • Existing methods may face challenges in simultaneously guiding proximal and distal segments.

Purpose of the Study:

  • To evaluate the efficacy of a dual-purpose computer-generated splint.
  • To assess the splint's ability to guide both proximal and distal segments in BSSO.
  • To determine if the splint maintains planned condylar position during fixation.

Main Methods:

  • Prospective case series study involving 8 patients with Class III malocclusion requiring BSSO.
  • A custom CAD/CAM splint was designed to guide the distal segment and engage the proximal segment.
  • Primary outcome measured by comparing pre- and post-operative condylar segment positions.

Main Results:

  • The study included 5 female and 3 male patients with a mean age of 28.4 ± 5.1 years.
  • The splint demonstrated promising accuracy in positioning the mandibular proximal segment, with results ranging from 2.59 to 0.49 mm.
  • Satisfied results were achieved in maintaining pre-operative condylar position.

Conclusions:

  • The dual-purpose computer-generated splint is effective in guiding both segments during BSSO.
  • The splint facilitates accurate positioning of the condylar segment, ensuring stability.
  • This technology offers a reliable method for improving surgical precision in orthognathic procedures.