Introduction: Zygomaticomaxillary complex fracture are increasing due to traffic accidents.Cone - beam computed tomography shows a major advance in maxillofacial imaging. The surgical method using mini-plates has been widely used in the world and has shown many advantages thanks to the continuous improvement in materials, shapes and sizes. Methods: A prospective descriptive study was conducted on 46 patients with facial traumas. The patients underwent conebeam computed tomography, which were diagnosed with complex fractures of zygomaticomaxillary complex fractures. They then underwent fixation techniques using miniplates at Odonto - stomatology Center, Hue Central Hospital, between March 2020 and March 2021. The results based on anatomical, functional and aesthetic criteria were evaluated. Results: Most patients were in the age group of >
18 - 40 years old, accounting for 69.6%. Gender: Male: 80.4%, female: 19.6%. Causes were usually traffic accidents: 93.5%. Clinical symptoms were: 100% facial deformities
80.4% throbbing pain when pressing at fractured points
71.7% trismus
63% malocclusion
50% of conjunctival hemorrhage
47.8% of soft tissue wounds
45.7% numbness. The specificity of horizontal and coronal cross-section radiograph is equal to 1 - compared to 3D radiograph. The detection rate of fracture (sensitivity) of horizontal cross-section film was lower than 3D radiograph, with a range from 0.64 to 1. Treatment results were excellent in 89.1%, good in 10.9% and none (0%) in bad. Conclusion: Fixation of bone with miniplates and screws is a method that results in excellent outcomes, facilitates patients to heal fast. Miniplates and screws do not have any reactions to humans’ bodies after placing them.