To compare the efficiency of maxillomandibular fixation screws over erich arch bar in achieving intermaxillary fixation in maxillofacial trauma: A clinical study

Abstract

Introduction: Intermaxillary fixation (IMF) is regarded as a significant step in the management of maxillofacial trauma. Various techniques have been mentioned in the literature for achieving maxillomandibular fixation (MMF). The conventional methods such as arch bars and eyelet wiring are the most commonly used, but these methods have their own shortcomings. With the introduction of self-tapping MMF screws in 1989, many of the drawbacks with the use of arch bars can be eliminated. Hence, the aim of this study was to compare the efficiency of MMF screws over arch bars in achieving IMF. Materials and Methods: Thirty patients that required IMF as a part of their treatment and reported to the Department of Oral and Maxillofacial Surgery KLE VKIDS and Dr. Prabhakar Kore charitable hospital, K LE, Belgaum, were included in the study. Patients were divided randomly into two groups: Group A: Patients treated using MMF screws and Group B: Patients treated using arch bars. Statistical analysis was performed using the Mann–Whitney U-test and unpaired t-test. Results: There was a significant difference in oral hygiene index between the two groups at the end of the 14th postoperative day. The time taken for the placement of MMF screws was significantly less (mean 18.7 min) as compared to arch bars (mean 41.2 min). Screw loosening was seen in 4 (26%) out of 15 patients and 3 screws (4.5%) out of 66 screws used showed partial mucosal coverage at the end of 2 weeks. There were no cases of penetration injury in Group A, while in Group B, penetration injury to the surgeon was noted in 5 (33.3%) cases. Conclusion: MMF screws provided good intraoperative MMF. Placement of screws consumes less time and reduces the intraoperative period and also the risk of penetration injury to the surgeon. We also observed better oral hygiene, better patient compliance, and no major complications with the use MMF screws. Hence MMF screws proved to be an efficient alternative to the conventional methods of achieving IMF.