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Is three-piece maxillary segmentation surgery a stable procedure?

Renata Mayumi Kato1, João Roberto Gonçalves1, Jaqueline Ignácio1

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Summary
This summary is machine-generated.

This study compared one-piece and three-piece maxillary osteotomies, finding similar skeletal stability between the two surgical techniques for Le Fort I osteotomies. Both methods offer comparable outcomes in terms of post-surgical stability.

Keywords:
Maxillary osteotomySurgical proceduresTomography

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Orthognathic Surgery
  • Craniofacial Reconstruction

Background:

  • Three-piece maxillary osteotomies are increasingly utilized, yet their skeletal stability compared to one-piece osteotomies remains debated in scientific literature.
  • Le Fort I osteotomy is a common procedure for correcting midface discrepancies.

Purpose of the Study:

  • To compare the skeletal stability of three-piece versus one-piece maxillary osteotomies following Le Fort I procedures.
  • To evaluate the long-term three-dimensional skeletal changes after these osteotomies.

Main Methods:

  • Retrospective cohort study of 39 patients undergoing Le Fort I maxillary osteotomies.
  • Patients divided into two groups: three-piece (n=22) and one-piece (n=17) osteotomies.
  • Three-dimensional skeletal changes assessed using cone-beam computed tomography scans at pre-surgical, post-surgical, and follow-up time points.

Main Results:

  • Statistically significant surgical changes were observed within the three-piece group in the canine and posterior regions.
  • No significant differences in skeletal stability were found between the one-piece and three-piece osteotomy groups.
  • Minimal mean differences in stability were recorded between the groups at the posterior (0.05 mm) and canine (-0.39 mm) regions.

Conclusions:

  • One-piece and three-piece maxillary osteotomies demonstrate comparable post-surgical skeletal stability.
  • The choice between one-piece and three-piece osteotomies may not significantly impact long-term skeletal stability.