A Multicenter RCT to Investigate the Treatment of Double (Bilateral) Mandibular Fractures


Mandibular fractures represent approximately 50% of the total facial fractures and are commonly (more than half) presented in more than one location. A few simple fractures can be treated using a conservative approach. More often, however, mandibular fractures require stabilization using open reduction and internal fixation. Simple mandibular fractures can be treated using non-rigid fixation techniques that rely on the load-sharing principle, by which stabilization is accomplished with both fixation devices and bone surfaces. On the other hand, more complex fractures with continuity defects or comminuted need to be handle using rigid fixation where the device assumes all the forces (load-bearing principle). These approaches are well established, whereas the level of evidence for the treatment of bilateral double mandibular fractures (DMF) is still scarce. In fact, which surgical treatment, or combination of treatments, leads to the best outcome and the lowest rate of complications in bilateral DMFs is an open question. The purpose of this study is to assess the complication rate in patients suffering from bilateral DMF treated either using non-rigid fixation on both fracture sides or a combination of rigid fixation on one side and non-rigid fixation on the other side.

Study Start Date

April 2015

Estimated Completion Date

May 2018


  • Procedure: Implants


  • Orthopedics: Trauma
  • Physician Assistant: Orthopedics

MeSH Terms

  • Bone
  • Fractures
  • Mandibular Fractures

Study ID

AO Clinical Investigation and Documentation -- CIP_DMFx_V1.0



Trial ID


Study Type


Trial Phase


Enrollment Quota



AO Clinical Investigation and Documentation

Inclusion Criteria

  • Age 18 years or older at the date of the surgery
  • Diagnosis of bilateral (double) mandibular fracture located in:
  • Angle and body or
  • Angle and symphysis or
  • Body and symphysis
  • Dentition: Patients must have most of their maxillary and mandibular teeth present and it must be possible to identify proper occlusion. The application of intraoperative Mandibulo-maxillary fixation (MMF) using arch bars must be possible
  • Ability to understand the content of the patient information / Informed Consent Form
  • Willingness and ability to participate in the clinical investigation according to the Clinical Investigation Plan (CIP)
  • Signed and dated IRB/EC-approved written informed consent

Exclusion Criteria

  • Fractures displaying continuity defect or comminution
  • Fractures showing clinical signs of infection at presentation
  • Edentulous mandible fracture
  • Fractures requiring an extra-oral surgical approach
  • Concomitant maxillary fractures
  • Concomitant condylar fracture
  • Prior surgical treatment of the fracture(s)
  • Atrophy of the mandible (<20 mm vertical height) at the level of the fracture(s)
  • Prisoners
  • Participation in any other medical device or medicinal product study within the previous month that could influence the results of the present study




18 Years and older

Accepts Healthy Volunteers


Study Locations and Contact Information (2)

Study Location Distance Name Phone Email
Jacobi Medical Center - New York, New York 40.3 miles Michael Turner MD DDS None None
University of Utah - Salt Lake City, Utah 2,001.3 miles Bryce Williams DDS None None

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