Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Oral and Maxillofacial Surgery

This study was conducted to compare between the rigidity of fixation between conventional 2mm plates and the reconstruction 2mm plates in cases of two lines of linear mandibular fracture. The results assessed by degree of bone density through radiographic evaluation preoperatively then immediately postoperatively, one month, two months, three months postoperatively. A total of 10 patients suffered from 2 lines of linear mandibular fracture divided into 2 groups five patients each. Group (A) treated with conventional 2mm plates and screws two plates for each fracture line (rigid fixation). Group (B) treated with locking 2mm plates and locking head screws one plate for each fracture line, three screws on each side of the fracture line (rigid fixation). Data collected by radiographic images taken preoperatively , one month, two months, three months postoperatively. Digitalized images were manipulated using the specially designed software of the digora system. On each digital image, the mean gray value of the marked region of interest was calculated using the line measurement facility of the software. This was performed by drawing lines along the whole length of the fracture line. The clinical results assessed infection rate, range on mandibular movement, post operative numbness and wound dehiscence. No signs of infection or wound dehiscence recorded throughout the follow up period, range of mandibular movement increased from 19-24mm preoperatively to 22-26mm immediately postoperatively to 40-45mm by the end three months postoperatively

Issued also as CD