Related Experiment Video
Updated: Oct 15, 2025
07:16
Author Spotlight: Development of a Novel Finite Element Analysis Model for Improved Orthognathic Surgical Techniques
Published on: October 20, 2023
1.5K
Two- and Three-Segment Surgically Assisted Rapid Maxillary Expansion: A Clinical Trial.
Gabriela P R Prado1, Alexandre F Koga1, Fabianne M G P Furtado1
1From the Postgraduate Program in Translational Medicine, Craniomaxillofacial Unit, Division of Plastic Surgery, Federal University of São Paulo.
Plastic and Reconstructive Surgery
|October 27, 2021
Summary
Comparing two- and three-segment surgically assisted rapid maxillary expansion, this study found no significant differences in outcomes. Both techniques offer similar maxillary expansion and stability, with limited psychological benefits.
Area of Science:
- Orthodontics
- Oral and Maxillofacial Surgery
- Craniofacial Development
Background:
- The optimal surgical technique for rapid maxillary expansion remains debated.
- Literature lacks consensus on whether two- or three-segment osteotomy is superior.
Purpose of the Study:
- To compare the outcomes of two-segment versus three-segment surgically assisted rapid maxillary expansion (SARME).
- To evaluate dimensional stability and patient-reported quality of life.
Main Methods:
- A randomized clinical trial involving 32 adult patients with transverse maxillary deficiency.
- Patients were assigned to either two- or three-segment SARME.
- Dimensional changes and psychological assessments were conducted pre- and post-operatively.
Main Results:
- No statistically significant differences in maxillary asymmetry or long-term stability were observed between the groups.
- The three-segment technique did not demonstrate superior psychological benefits in quality-of-life questionnaires.
Conclusions:
- Three-segment SARME does not offer advantages over two-segment SARME in terms of maxillary symmetry and palatine vault stability.
- Psychological benefits, if any, are limited and short-lasting, suggesting a need for more sensitive assessment tools.
