Rotation of the maxillomandibular complex in orthognathic surgery: A review

  • Mahbube Sadat Hasheminasab Department of Oral & Maxillofacial Surgery, Craniomaxillofacial Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
  • Mahsa Mortazavi Department of Orthodontics, University of the Pacific, Arthur A, Dugoni School of Dentisry.
  • Reza Sharifi Oral and Maxillofacial Surgery Department, Craniomaxillofacial Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
  • Farzaneh Bolandparva Mail Department of Oral & Maxillofacial Surgery, Craniomaxillofacial Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Keywords:
Maxillomandibular complex (MMC), Orthognathic surgery, Consequences of maxillomandibular complex rotation

Abstract

Introduction: In orthognathic surgery, maxillomandibular complex (MMC) refers to a three-dimensional dento-osseous structure consisting of the surgically-mobilized part of the maxillatogether with the distal segment (i.e., tooth bearing segment) of the mandible (either surgically mobilized or not). In fact, MMC is the skeletal part of the lower face. The size, shape and position of MMC play a major role in soft tissue esthetics of the lower face. Materials and Methods: A comprehensive review of the current data regarding effects of maxillomandibular complex rotation in sagittal plane, on “occlusal plane, TMJ, sleep apnea, paranasal soft tissues, upper lip, chin, cervicomental soft tissues” was conducted. Results: MMC rotation and translation could take place in any of the three planes of reference including sagittal, coronal, and horizontal. Any kind of changes in the position of MMC could have its own functional and esthetic consequences. In general, patients with convex facial profiles require counter clockwise rotation while patients with concave profiles require clockwise rotation. Conclusion: MMC not only has great impacts on facial esthetics, but also has significant functional effects, for example in breathing and mastication. Alteration in the position of MMC is possible by orthognathic surgery. Keywords: Maxillomandibular complex (MMC); Orthognathic surgery; Consequences of maxillomandibularcomplex rotation.

References

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Published
2020-05-16
How to Cite
1.
Hasheminasab MS, Mortazavi M, Sharifi R, Bolandparva F. Rotation of the maxillomandibular complex in orthognathic surgery: A review. J Craniomaxillofac Res. 6(4):138-142.
Section
Review Article(s)