The University Münster model surgery system for Orthognathic surgery. Part I – The idea behind

Background: We describe a procedure for diagnosis and planning for orthognatic surgery based on international standards. A special 2D planning based on lateral cephalograms (Axis Orbital Marker Lines System) realize a transmission to the SAM 2P articulator (3D) by means of the Axis Orbital Plane. Me...

Authors: Ehmer, Ulrike
Joos, Ulrich
Flieger, Stefanie
Wiechmann, Dirk
Division/Institute:FB 05: Medizinische Fakultät
Document types:Article
Media types:Text
Publication date:2012
Date of publication on miami:06.03.2013
Modification date:23.01.2020
Edition statement:[Electronic ed.]
Source:Head & Face Medicine 8 (2012) 14
DDC Subject:610: Medizin und Gesundheit
License:CC BY 2.0
Language:English
Notes:Finanziert durch den Open-Access-Publikationsfonds 2012/2013 der Deutschen Forschungsgemeinschaft (DFG) und der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Format:PDF document
URN:urn:nbn:de:hbz:6-47369461363
Permalink:http://nbn-resolving.de/urn:nbn:de:hbz:6-47369461363
Other Identifiers:DOI: 10.1186/1746-160X-8-14
Digital documents:1746-160X-8-14.pdf

Background: We describe a procedure for diagnosis and planning for orthognatic surgery based on international standards. A special 2D planning based on lateral cephalograms (Axis Orbital Marker Lines System) realize a transmission to the SAM 2P articulator (3D) by means of the Axis Orbital Plane. Methods: Former intraoperative measurement of the average height of the LeFort I osteotomy plane relative to the molar occlusal plane allow to construct a virtual osteotomy plane in the lateral cephalogram. This is the basis for the development of the Axis Orbital Marker Lines System (AO-MLS). Results: The AO-MLS is presented graphically, and in detail, with construction guidelines. The system could be integrated into various lateral cephalometric analysis- and surgical prediction schemes. It forms the basis for a standardized transfer of the 2D planning to the 3D planning in the articulator, and vice versa. This procedure makes it possible to generate surgical planning protocols based on the model surgery, which represent the dislocations in the proximity of the real osteotomy planes. Conclusions: The Axis Orbital Marker Lines System (software component) in conjunction with the University Münster Model Surgery System (hardware system) increases the predictability of model operations in orthognathic surgery.