Are Embrasure Wires Effective and Reliable Method for Intraoperative Maxillomandibular Fixation in Mandibular...

Maxillomandibular fixation (MMF) is a basic and fundamental principle in the management of the maxillofacial trauma patients. Some fractures require only intraoperative MMF, during open reduction and internal fixation but not in the postoperative period. The present study was aimed to assess and compare the efficacy of embrasure wire with Erich arch bar as methods of intraoperative maxillomandibular fixation in the management of mandibular fractures.

The prospective randomized study was undertaken in 30 patients who required intraoperative maxillomandibular fixation for mandibular fractures. Patients were randomly divided into two groups of 15 each (Erich arch bar in Group A and embrasure wire in Group B). The preoperative assessment included evaluation of demographic data, fracture location, mechanism of injury, degree of displacement of fracture and occlusion. Intraoperative parameters assessed were the time consumed for the application of MMF technique, injury to the operator/assistant, injury to the patient, stability of MMF technique, incidence of glove perforations and the cost of the MMF device.

The mean time required for MMF and incidence of glove perforation were significantly (P < 0.001) less in embrasure wire group than the Erich arch bar group. The MMF technique maintained stable occlusion during open reduction and internal fixation in both the groups.

Embrasure wire is an effective, reliable alternative form of intraoperative MMF, as needle-stick injury and time taken for placement were less as compared to the Erich arch bar group. However, Erich arch bar wiring is a versatile method and recommended where postoperative maxillomandibular fixation is also required.