Chapter-10 Model Surgery

BOOK TITLE: Surgical Correction of Facial Deformities

1. Krishnan Deepak G
2. Gutta Rajesh
3. Kaura Sameer
Publishing Year
Author Affiliations
1. University of Cincinnati Medical Center, Albert Sabin Way, Cincinnati, Ohio, USA
2. University of Texas Health Science Center, Floyd Curl Drive, San Antonio, USA
3. BJS Dental College and Hospital, Ludhiana (Punjab), India
Chapter keywords


A conceptual treatment planning involving movements of both jaws in all three planes of space is critical to the success of orthognathic surgery. Regardless of whether the planned manoeuver is simple or a complex asymmetric correction, it is imperative that the operator plans and executes these movements in the laboratory using analytical model surgery and thereafter transfers this movement to the patient with a surgical splint. The success of orthognathic correction of a dentofacial deformity largely depends on the stability of the final functional and aesthetic outcome and this requires that one takes into consideration establishment of a stable occlusion with appropriate seating of the condyles within the glenoid fossa. In addition, repositioning of the jaws in a multi-planar dimension to correct the structural deformity within the confines of the soft tissue curtains must also be considered. There may be multiple ways to achieve the same outcome, be it in ultimate surgical strategies or in model surgery depending on the operator’s preference. While most model surgery techniques have not been validated8 to be able to be directly transferable in actual surgery, they all provide a “road map” to navigate through the variables that present themselves in surgery. The techniques, however varied, all provide one method or another to allow the operator to position the jaws in a pre-planned position as outlined by his pre-operative database, cephalometric prediction and laboratory model surgery.

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