To investigate the clinical application of three-dimensional rigid internal fixation in the treatment of anterior mandibular fractures

Abstract

The mandible is located in the lower part of the face, with a special bow shape and hard texture, and it is the only movable bone in the maxillofacial region. In recent years, maxillofacial fractures have been on the rise year by year, and the degree of injury is getting worse and worse, because the mandible is in a more prominent position in the maxillofacial region, and it is prone to fracture after being subjected to an external force. The traditional internal fixation method is to fix the mandible at the lateral side, which can achieve effective fixation in two-dimensional space and prevent the bending moment generated by the fracture, but it cannot effectively prevent the torsion generated by the fracture. And there was obvious torsion of the fractured segment in the fracture of the mandibular chin median and chin foramen region. Two-point fixation is preferred in the fixation of median union fracture, and the distance between the two points of fixation should be increased as much as possible in order to improve the stability of fixation without injuring the important anatomical structures. Therefore, the fixation of median and paramedian fractures of the mandible, in addition to fixing the fracture horizontally under the apical level to overcome the tension, the fracture of the mandible should be fixed at the lower margin to overcome the torque. Therefore, the three-dimensional fixation of the lower edge of the titanium plate to the lower edge of the mandible has a small displacement of the fracture segment, and the smaller the displacement, the more stable the fixation, and the more favorable to the healing of the fracture to reduce the occurrence of postoperative complications.