Validity of Computed Guided Technology in Proper Placement of Intermaxillary Fixation Screws in Mandibular Fractures

"IMF screws will be placed at the junction of the attached and alveolar mucosa, after verifying the root position on the orthopantomogram (OPG) radiograph. One screw in each quadrant was sufficient; all IMF screws will be placed with the patient under local anesthesia or general anesthesia . Cortical perforation with a 1.5-mm drill bit under copious irrigation will be performed or by self-drilling IMF screws and the IMF screws will be tightened on the drilled hole.~After IMFS placement, intraoperative IMF will be achieved by passing round, stainless steel wires through the screw head to achieve satisfactory occlusion."

"The patient's CBCT images in DICOM format will be converted into stereolithographic (STL) images using the segmentation software.~The converted CBCT STL images will be integrated to obtain the exact tooth morphology Virtual surgical planning (VSP) will be carried out using software to select the exact position of IMF screws placement away from any vital, anatomical or tooth structure.~these locations will be incorporated into the patients specific IMF surgical guides as access holes to direct the IMF screws drill.~Guide will be constructed with a thickness of 2-3 mm and printed using Photopolymer Resin® (Form labs) in the CAD/CAM 3- dimensional (3D) printer"