Importance of patient-specific intraoperative guides in complex maxillofacial reconstruction |
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| Authors: | Dennis Rohner Raquel Guijarro-Martínez Peter Bucher Beat Hammer |
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| Institution: | 1. Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. Dr. Dr. h.c. F.W. Neukam), Erlangen University Hospital, Glückstrasse 11, 91054 Erlangen, Germany;2. Department of Prosthodontics (Head: Prof. Dr. M. Wichmann), Erlangen University Hospital, Glückstrasse 11, 91054 Erlangen, Germany;3. Department of Cranio-Maxillofacial and Oral Surgery (Head: Prof. Dr. Dr. E. Nkenke), Medical University of Vienna, Währinger Gürtel 18-20, 1090 Wien, Austria;4. Department I, Institute of Anatomy (Head: Prof. Dr. W. Neuhuber), Friedrich-Alexander-University of Erlangen-Nuremberg, Krankenhausstraße 9, 91054 Erlangen, Germany;5. Institute of Radiology (Head: Prof. Dr. M. Uder), Erlangen University Hospital, Maximilliansplatz 1, 91054 Erlangen, Germany;6. Department of Medical Informatics, Biometry and Epidemiology (Head: Prof. Dr. O. Gefeller), Friedrich-Alexander-University of Erlangen-Nuremberg, Universitätsstraße 22, 91054 Erlangen, Germany;1. Director, Predoctoral Orthodontics, Harvard School of Dental Medicine, Boston, Massachusetts;2. Director of Orthodontics, Children''s Hospital of Boston, Boston, Massachusetts;3. Postdoctoral orthodontic fellow, Harvard School of Dental Medicine, Boston, Massachusetts;4. Assistant Professor, Department of Orthodontics, University of Connecticut School of Dental Medicine, Farmington, Connecticut;5. DMD student, Harvard School of Dental Medicine, Boston, Massachusetts;6. Professor and Department Head, Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, Connecticut;1. Department of Plastic and Maxillofacial Surgery, Henri Mondor Hospital, Créteil, France;2. Department of Head and Neck Surgery, Intercity Hospital of Creteil, Creteil, France;3. Department of Head and Neck Surgery, Oscar Lambret Cancer Centre, Lille, France |
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| Abstract: | BackgroundConventional maxillofacial reconstruction often leads to suboptimal results due to inaccurate planning or surgical difficulties in adjusting a free flap and osteosynthesis plates into a three-dimensional defect.ObjectivesTo justify the importance of patient-specific intraoperative guides in complex maxillofacial reconstruction.Clinical exampleA 40-year old patient underwent a left hemimaxillectomy for an adenoid cystic carcinoma of the palate. Six years later, massive recurrence required radical resection of the left orbit and reconstruction with cranial bone grafts and a free latissimus dorsi flap. Postoperative radiotherapy resulted in local osteoradionecrosis. Surgical revision and restoration of the maxillary defect with a prefabricated fibula flap was performed. The authors provide ample information on the application of computer-aided design and manufacturing (CAD-CAM) and rapid prototyping at each reconstructive step.DiscussionStereolithographic models enable simulation of the resective and reconstructive phases, prebending of reconstruction plates and fabrication of surgical guides.ConclusionsOptimal restitution of complex maxillofacial defects requires meticulous planning of the surgical and prosthetic phases and effective transfer of the plan to the operating room through patient specific guides. CAD-CAM technology and stereolithographic models represent an effective strategy to achieve this. Improved patient outcomes and intraoperative efficiency certainly offset the inherent increase in costs. |
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