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Published on: October 27, 2023
[A novel miniplate model for maxillary osteotomies].
F Boutault1, O-R Diallo, F Jalbert
1Service de chirurgie maxillofaciale et chirurgie plastique de la face, CHU de Toulouse-Purpan, place Baylac, 31059 Toulouse cedex, France. boutault.f@chu-toulouse.fr <boutault.f@chu-toulouse.fr>
Revue De Stomatologie Et De Chirurgie Maxillo-Faciale
|October 20, 2009
Summary
This study introduces a new miniplate for Le Fort I osteotomies, showing improved strength and adaptability. The novel design offers better clinical outcomes in orthognathic surgery.
Area of Science:
- Orthognathic Surgery
- Biomaterials Engineering
- Oral and Maxillofacial Surgery
Background:
- Miniplates significantly improved orthognathic surgery, particularly Le Fort I osteotomies, enhancing technical aspects, recovery, and stability.
- Accurate modeling of miniplates is challenging due to the difficulty in balancing malleability and rigidity.
- A novel miniplate model was designed to address these limitations.
Purpose of the Study:
- To evaluate the clinical performance of a newly designed miniplate for Le Fort I osteotomies.
- To assess the balance between malleability and rigidity offered by the new miniplate model.
- To compare the novel miniplate's efficacy against existing devices in orthognathic surgery.
Main Methods:
- A novel 1mm thick miniplate with specific socket and bar design was developed.
- Mechanical testing demonstrated superior strength and adaptability compared to 0.6mm and standard 1mm plates.
- A retrospective study of 180 patients undergoing Le Fort I osteotomy (with or without mandibular osteotomy) was conducted, excluding congenital abnormalities.
Main Results:
- Bone healing occurred successfully in most patients within the expected timeframe.
- One case of plate fracture and one case of slight upper jaw mobility post-device removal were noted.
- No instances of material intolerance were observed in the patient cohort.
Conclusions:
- The novel miniplate demonstrates improved performance compared to existing devices for Le Fort I osteotomies.
- The design addresses challenges in rigid osteosynthesis, offering necessary rigidity, inconspicuousness, and good tolerance.
- A limited range of three plate lengths simplifies inventory and cost, with mandatory use of four plates per surgery recommended.
