ارزيابي پيچ هاي ثابت كننده بين فكي در درمان شكستگي هاي فك پايين

Evaluation of Maxillomandibular Fixation Screws in the Management of Mandibular Fractures

Introduction: The use of maxillomandibular fixation screws (MMFS) has become increasingly popular in maxillofacial surgery. This method does not have many of the disadvantages of the arch bar. However, use of this method has not been studied well. The aim of this study was to evaluate the efficacy of fixation and adaptation by means of screw in mandibular fractures. Materials & Methods: In this clinical trial study, approved by ethical committee of Mashhad University of Medical Sciences, maxillomandibular fixation self-tapping screws were used in 28 patients. At least 2 screws were inserted in each jaw and jointed together with wires. The jaws were fixed for 4 weeks in the normal occlusion. Frequency of fracture healing in terms of fracture location as well as healing at fracture sites and frequency of nerve and tooth injury resulting from screw insertion were recorded. Results: Except for one case that developed mild open bite, the other 27 patients were recuperated in function and appearance. There were no dental or sensory complications. Conclusion: Considering the advantages of MMFS in mandibular fracture fixation, application of this device as an alternative to traditional therapy is reeommended