Comparison of miniplate versus lag-screw osteosynthesis for fractures of the mandibular angle

ObjectivesTreating mandibular angle fractures is common in maxillofacial surgery. The aim of this study was to compare lag screw fixation and miniplates.Study designThis retrospective investigation compared patients treated with miniplates (n = 24) and with lag screws (n = 21). Inclusion criteria were a solitary angle fracture without comminution or other reasons for load-bearing osteosynthesis. The main parameters for the outcome analysis were fracture gaps at 4 defined measuring points on postoperative radiography. Postsurgical complications were recorded.ResultsFracture gaps measured in panoramic radiographs differed significantly between the lag-screw (average 0.56 mm) group and the group using 1 miniplate (average 0.85 mm) and 2 miniplates (1.40 mm). Miniplate fixation resulted in a wider fracture gap, especially in the region of the lower margin of the mandible.ConclusionLag-screw fixation demonstrated smaller fracture gaps compared with miniplate fixation.