Maxillary stability following Le Fort I osteotomy using prebent plates and wire fixation in patients undergoing
José Thiers Carneiro Júnior1, Douglas Voss de Oliveira1, Reginald Goodday2
1Federal University of Pará, (Head of the institution: Emmanuel Zagury Tourinho, PhD), Augusto Corrêa, 01, Guamá, CEP: 66075-110, Belém, PA, Brazil.
Abstract:
The purpose of this study was to analyze the stability of Le Fort I maxillary advancement in the vertical and horizontal directions using a combination of wire and rigid fixation in patients undergoing surgery to treat obstructive sleep apnea (OSA). Wire osteosynthesis can be performed quicker and at a reduced cost. The lateral cephalograms of 21 patients were evaluated preoperatively (T0), immediately postoperatively (T1), and at least 6 months postoperatively (T2). Four cephalometric points were used to measure movement in the horizontal and vertical directions. Mean values were determined, and data were statistically analyzed by ANOVA to determine differences between time points. Of the four points analyzed, the average maxillary advancement in the horizontal direction was 7.48 mm and the relapse was 0.56 mm with absence of statistically significant differences between the measurements taken (T1) and (T2). There was a 5% probability of error in the vertical movements at the points I and posterior nasal spine. The combination of two pre-bent plates in piriform aperture with osteosynthesis using surgical steel wires in the zygomatic buttress in patients undergoing maxillary surgery for OSA stabilized the large horizontal maxillary advancements and enhanced vertical stability in the first molar and A point regions.
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