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Piezoosteotomy in orthognathic surgery versus conventional saw and chisel osteotomy
C A Landes1, S Stübinger, A Ballon
1Mund-, Kiefer und Plastische Gesichtschirurgie, Goethe Universität Frankfurt, Theodor-Stern-Kai 7, 60596, Frankfurt, Germany. c.landes@lycos.com
Oral and Maxillofacial Surgery
|July 17, 2008
Summary
Piezoosteotomy in orthognathic surgery offers reduced blood loss and improved nerve preservation compared to conventional methods. While effective, some cases may require auxiliary tools for optimal segment interdigitation.
Area of Science:
- Oral and Maxillofacial Surgery
- Biomaterials Science
Background:
- Orthognathic surgery traditionally uses saws and chisels for osteotomy.
- Piezoosteotomy presents a novel alternative with potential benefits in precision and tissue preservation.
Purpose of the Study:
- To evaluate piezoosteotomy as an alternative osteotomy technique in orthognathic surgery.
- To compare handling, time, and neurovascular outcomes against conventional methods.
Main Methods:
- A prospective comparative study involving 90 patients undergoing piezoosteotomy.
- Retrospective analysis of 90 control patients using conventional saw and chisel osteotomy.
- Detailed breakdown of osteotomy types performed (LeFort I, sagittal split, etc.) for both groups.
Main Results:
- Piezoosteotomy significantly reduced blood loss (537 vs. 772 ml) and improved alveolar nerve sensitivity preservation (98% vs. 84%).
- Operation time was comparable between piezoosteotomy and conventional methods (223 vs. 238 min).
- Auxiliary chisels or sawing were needed in some piezoosteotomy cases (100% for nasal structures, 15% for mandibular).
Conclusions:
- Piezoosteotomy is a viable alternative in orthognathic surgery, demonstrating reduced blood loss and better nerve preservation without increasing operation time.
- Further research into piezoelectric screw insertion for complex osteotomies could enhance segment interdigitation and reduce fixation time.
