Introduction: Mandible fracture is the second most common fracture of the face. Open Reduction and Internal Fixation (ORIF) has gained popularity with improvement in plating materials and regined of surgical technique. The most common complication documented in post-ORIF patients with mandible fracture was malocclusion and the most frequent locations are at angles and subcondylar. The purpose of this study was to determine the relationship between the location of mandible fracture and the incidence of post-ORIF malocclusion at H. Adam Malik General Hospital Medan.

The purpose of this study was to determine the relationship between the location of mandibular fracture and the incidence of post-ORIF malocclusion at RSUP H. Adam Malik Medan.

Methods: This study is an analytical study with cross sectional design. Subject of this study amounted to 57 people. Data were collected through medical record at Adam Malik Medan General Hospital during period of August 2016 until March 2017. Data were analyzed by using Chi-Square test.

Results: From the 57 cases of this mandibular fracture showed that male gender 55 people (96%), fracture location on parasymphisis 35 people (61%), the most often etiology is due to traffic accident 53 people (92%), meanwhile, there were not found the post-ORIF incidence of malocclusion in 52 people (79%). Based on the Chi-Square test, p=0.63 showed that there is no relationship between the location of the mandibular fracture and the incidence of post-ORIF malocclusion.

Conclusion: The study shows that there is no relationship between the location of the mandibular fracture and the incidence of post-ORIF malocclusion.

Eben E. Manalu