ABSTRACT
Objective: To evaluate the clinical results of intermaxillary fixation screws used in the management of oral and maxillofacial bone fracture. Methods: The clinical and imaging data of 166 cases of oral and maxillofacial bone fractures treated by intermaxillary fixation screws were analyzed retrospectively with the implant location,numbers and the complications of the treatment. Results: 668 intermaxillary fixation screws were used in the 166 cases,at an average of 4 screws per case. The occlusal relationship of the patients was perfect after 1 week traction. Radiographs showed 105 screws (15. 7％) reached the superficial layer of dentin,middle or deep layer in 14 cases (2. 1％),and root canal injury in 2 cases(1. 2％). No intermaxillary fixation screw was broken,loosened or fallen off. Conclusion: Intermaxillary fixation screws can be effectively used in the management of oral and maxillofacial bone fracture. For the most cases,4-6 screws can meet the needs. Root injuries and other complications should be avoided.