title: Evaluation of the Accuracy of Computer-Guided Mandibular Fracture Reduction.
abstract: The aim of the current study was to evaluate the accuracy of computer-guided mandibular fracture reduction. A total of 24 patients with fractured mandible were included in the current study. A preoperative cone beam computed tomography (CBCT) scan was performed on all of the patients. Based on CBCT, three-dimensional reconstruction and virtual reduction of the mandibular fracture segments were done and a virtual bone borne surgical guide was designed and exported as Standard Tessellation Language file. A physical guide was then fabricated using a three-dimensional printing machine. Open reduction and internal fixation was done for all of the patients and the fracture segments were anatomically reduced with the aid of the custom-fabricated surgical guide. Postoperative CBCT was performed after 7 days and results of which were compared with the virtually reduced preoperative mandibular models. Comparison of values of lingula-sagittal plane, inferior border-sagittal plane, and anteroposterior measurements revealed no statistically significant differences between the virtual and the clinically reduced CBCT models. Based on the results of the current study, computer-based surgical guide aid in obtaining accurate anatomical reduction of the displaced mandibular fractured segments. Moreover, the computer-based surgical guides were found to be beneficial in reducing fractures of completely and partially edentulous mandibles.
authors.affiliation: *Maxillofacial Department, Faculty of Dentistry, Cairo University, Cairo, Egypt †Maxillofacial Department, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
authors.forename: Mostafa
authors.initials: M
authors.lastname: el-Gengehi
authors.forename: Sameh A
authors.initials: SA
authors.lastname: Seif
mesh_terms: D000328:Adult; D000368:Aged; D001860:Bone Plates; D001863:Bone Screws; D017076:Computer-Aided Design; D054893:Cone-Beam Computed Tomography / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000295:instrumentation; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D007575:Jaw, Edentulous / Q000601:surgery; D007576:Jaw, Edentulous, Partially / Q000601:surgery; D008297:Male; D008334:Mandible / Q000601:surgery; D008337:Mandibular Fractures / Q000601:surgery*; D008875:Middle Aged; D010347:Patient Care Planning; D066330:Printing, Three-Dimensional; D015607:Stents; D025321:Surgery, Computer-Assisted / Q000379:methods / Q000592:standards*; D014584:User-Computer Interface