Electromagnetic navigated positioning of the maxilla after Le Fort I osteotomy in preclinical orthognathic surgery cases

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• 作者：Moritz Berger ; MD ; DDS^a ; ^{moritz.berger@med.uni-heidelberg.de} ; Igor Nova ; MSc^b ; Sebastian Kallus ; MSc^b ; Oliver Ristow ; MD ; DDS^a ; Urs Eisenmann ; MSc^b ; Christian Freudlsperger ; MD ; DDS^a ; Robin Seeberger ; MD ; DDS^a ; Jü ; rgen Hoffmann ; MD ; DDS ; PhD^a ; Hartmut Dickhaus ; MSc ; PhD^b
• 刊名：Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：123
• 期：3
• 页码：298-304
• 全文大小：878 K
• 卷排序：123

文摘

Inaccuracies in orthognathic surgery can be caused during face-bow registration, model surgery on plaster models, and intermaxillary splint manufacturing. Electromagnetic (EM) navigation is a promising method for splintless digitized maxillary positioning.Study DesignAfter performing Le Fort I osteotomy on 10 plastic skulls, the target position of the maxilla was guided by an EM navigation system. Specially implemented software illustrated the target position by real-time multistage colored three-dimensional imaging. Accuracy was determined by using pre- and postoperative cone beam computed tomography.ResultsThe high accuracy of the EM system was underlined by the fact that it had a navigated maxilla position discrepancy of only 0.4 mm, which was verified by postoperative cone beam computed tomography.ConclusionsThis preclinical study demonstrates a precise digitized approach for splintless maxillary repositioning after Le Fort I osteotomy. The accuracy and intuitive illustration of the introduced EM navigation system is promising for potential daily use in orthognathic surgery.