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Lampert P, Fenske J, Wüster J, Koerdt S, Kreutzer K, Ruf P, Checa S, Heiland M, Steffen C, Rendenbach C. Comparative study of CAD/CAM reconstruction and miniplates for patient-specific fixation in LCL-type mandibular reconstruction. Front Oncol 2024; 14:1438269. [PMID: 39323993 PMCID: PMC11422126 DOI: 10.3389/fonc.2024.1438269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Accepted: 08/05/2024] [Indexed: 09/27/2024] Open
Abstract
Objective Miniplates offer superior clinical handling and facilitate postoperative removal after mandibular reconstruction but unfavorable load distribution under high stress has been shown. This study aimed to compare the clinical outcome of patient-specific 3D-printed (PS-3D) titanium miniplate with reconstruction plate fixation in three-segmental LCL-type reconstructions for the first time. Methods Patients undergoing three-segmental LCL-type mandibular reconstruction after malignant tumor resection between April 2017 and July 2023 were analyzed in a retrospective single-center study. Inclusion criteria were primary reconstruction using a fibula free flap and PS-3D titanium mini- or reconstruction plate fixation. Complication rates were recorded and analyzed within 6 months after surgery using the N - 1 Chi2- and unequal variance t-test. Results 38 patients (10 females, 28 males; mean age 61.4 ± 7.6 years) met the inclusion criteria. In 14 patients (36.8%) miniplates were used in the anterior region. Rates of fixation failure, plate exposure, incomplete osseous union, wound infection, soft tissue, and overall complications did not differ significantly between the two plate systems. Conclusion Complication rates did not differ significantly between PS-3D mini- and reconstruction plates in three-segmental LCL-type mandibular reconstructions. Given their advantages in clinical handling and postoperative removal, PS-3D miniplates can be a viable alternative also in larger mandibular reconstructions.
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Affiliation(s)
- Philipp Lampert
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
| | - Jakob Fenske
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
| | - Jonas Wüster
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
| | - Steffen Koerdt
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
| | - Kilian Kreutzer
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
| | - Philipp Ruf
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
| | - Sara Checa
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Max Heiland
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
| | - Claudius Steffen
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
| | - Carsten Rendenbach
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Oral and Maxillofacial Surgery, Berlin, Germany
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Wagner J, Luck S, Loger K, Açil Y, Spille JH, Kurz S, Ahlhelm M, Schwarzer-Fischer E, Ingwersen LC, Jonitz-Heincke A, Sedaghat S, Wiltfang J, Naujokat H. Bone regeneration in critical-size defects of the mandible using biomechanically adapted CAD/CAM hybrid scaffolds: An in vivo study in miniature pigs. J Craniomaxillofac Surg 2024; 52:127-135. [PMID: 38129185 DOI: 10.1016/j.jcms.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
The study aimed to analyze bone regeneration in critical-size defects using hybrid scaffolds biomechanically adapted to the specific defect and adding the growth factor rhBMP-2. For this animal study, ten minipigs underwent bilateral defects in the corpus mandibulae and were subsequently treated with novel cylindrical hybrid scaffolds. These scaffolds were designed digitally to suit the biomechanical requirements of the mandibular defect, utilizing finite element analysis. The scaffolds comprised zirconium dioxide-tricalcium phosphate (ZrO2-TCP) support struts and TCP foam ceramics. One scaffold in each animal was loaded with rhBMP-2 (100 μg/cm³), while the other served as an unloaded negative control. Fluorescent dyes were administered every 2 weeks, and computed tomography (CT) scans were conducted every 4 weeks. Euthanasia was performed after 3 months, and samples were collected for examination using micro-CT and histological evaluation of both hard and soft tissue. Intravital CT examinations revealed minor changes in radiographic density from 4 to 12 weeks postoperatively. In the group treated with rhBMP-2, radiographic density shifted from 2513 ± 128 (mean ± SD) to 2606 ± 115 Hounsfield units (HU), while the group without rhBMP-2 showed a change from 2430 ± 131 to 2601 ± 67 HU. Prior to implantation, the radiological density of samples measured 1508 ± 30 mg HA/cm³, whereas post-mortem densities were 1346 ± 71 mg HA/cm³ in the rhBMP-2 group and 1282 ± 91 mg HA/cm³ in the control group (p = 0.045), as indicated by micro-CT measurements. The histological assessment demonstrated successful ossification in all specimens. The newly formed bone area proportion was significantly greater in the rhBMP-2 group (48 ± 10%) compared with the control group without rhBMP-2 (42 ± 9%, p = 0.03). The mean area proportion of remaining TCP foam was 23 ± 8% with rhBMP-2 and 24 ± 10% without rhBMP-2. Successful bone regeneration was accomplished by implanting hybrid scaffolds into critical-size mandibular defects. Loading these scaffolds with rhBMP-2 led to enhanced bone regeneration and a uniform distribution of new bone formation within the hybrid scaffolds. Further studies are required to determine the adaptability of hybrid scaffolds for larger and potentially segmental defects in the maxillofacial region.
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Affiliation(s)
- Juliane Wagner
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany; Cluster of Excellence, Precision Medicine in Inflammation, Christian-Albrechts-University of Kiel, Kiel, Germany.
| | - Sascha Luck
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Klaas Loger
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Yahya Açil
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Johannes H Spille
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Sascha Kurz
- ZESBO - Center for Research on Musculoskeletal Systems, Leipzig University, Leipzig, Germany
| | - Matthias Ahlhelm
- Fraunhofer Institute for Ceramic Technologies and Systems, IKTS, Dresden, Germany
| | | | - Lena-Christin Ingwersen
- Biomechanics and Implant Technology Research Laboratory, Department of Orthopaedics, Rostock University Medical Center, Rostock, Germany
| | - Anika Jonitz-Heincke
- Biomechanics and Implant Technology Research Laboratory, Department of Orthopaedics, Rostock University Medical Center, Rostock, Germany
| | - Sam Sedaghat
- Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Jörg Wiltfang
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Hendrik Naujokat
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
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Bräuer C, Ullmann K, Lauer G, Franke A, McLeod NMH, Leonhardt H. Alloplastic reconstruction of the mandible after subtotal mandibulectomy for medication-related osteonecrosis of the jaw: An update of the method. Head Neck 2023; 45:2638-2648. [PMID: 37622613 DOI: 10.1002/hed.27489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/04/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND Reconstruction of continuity defects following osteonecrosis in multimorbid patients is challenging. In all cases of the predescribed palliative treatment method for alloplastic mandible reconstruction, plate fractures were detected in follow-up. We hypothesized that a modification could avoid these fractures, leading to stable long-term results. METHODS This retrospective study compares the original method with a modification using single, laser-sintered CAD-CAM plates instead of manually bent miniplates. The predescribed shuttering technique was used to reconstruct the mandible in its original shape with bone cement. RESULTS Uneventful wound healing was observed in 86% of the cases after modification of the method. No implant or plate fracture occurred. CONCLUSIONS The presented method should be considered as a treatment option for mandible reconstruction in elderly, multimorbid patients in palliative situations. The results of this study suggest that the modification of the method leads to significantly improved long-term stability. Donor site morbidity is avoided with this method of palliative surgery.
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Affiliation(s)
- Christian Bräuer
- Department of Oral & Maxillofacial Surgery, Dresden University Hospital, Dresden, Germany
- Department of Oral & Maxillofacial Surgery, Facial Plastic Surgery, Universitätsmedizin Rostock, Rostock, Germany
| | - Katrin Ullmann
- Department of Prosthodontics, Dresden University Hospital, Dresden, Germany
| | - Günter Lauer
- Department of Oral & Maxillofacial Surgery, Dresden University Hospital, Dresden, Germany
| | - Adrian Franke
- Department of Oral & Maxillofacial Surgery, Dresden University Hospital, Dresden, Germany
| | - Niall M H McLeod
- Department of Oral & Maxillofacial Surgery, University Hospitals of Leicester, NHS TRUST, Leicester, UK
| | - Henry Leonhardt
- Department of Oral & Maxillofacial Surgery, Dresden University Hospital, Dresden, Germany
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Bevans S, Hammer D. Tenants of Mandibular Reconstruction in Segmental Defects. Otolaryngol Clin North Am 2023:S0030-6665(23)00066-X. [PMID: 37246030 DOI: 10.1016/j.otc.2023.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The premises of mandibular reconstruction are the restoration of occlusion and mandibular contour for the purpose of preserving the facial identity, oral airway, and effective speech and mastication. Establishing functional occlusion is the primary tenant in all mandibular reconstruction. In cases of segmental defects, particularly in dentate regions of the mandible, there has been a paradigm shift over the past two decades in how surgeons are approaching the restoration of load-bearing mandibular continuity with capacity for dental implantation. Here we discuss considerations for deciding the most effective method of reconstruction in segmental defects.
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Affiliation(s)
- Scott Bevans
- Department of Otolaryngology, Tripler Army Medical Center, 1 Jarrett White Road, TAMC, HI 96818, USA; Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.
| | - Daniel Hammer
- Uniformed Services University, 4301 Jones Bridge Road, Bethesda, MD 20814, USA; Department of Oral Maxillofacial Surgery, Naval Medical Center San Diego, 34800 Bob Wilson Drive, San Diego, CA 92134, USA
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5
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Haroun F, Benmoussa N, Bidault F, Lassau N, Moya-Plana A, Leymarie N, Honart JF, Kolb F, Qassemyar Q, Gorphe P. Outcomes of mandibular reconstruction using three-dimensional custom-made porous titanium prostheses. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2023; 124:101281. [PMID: 36084893 DOI: 10.1016/j.jormas.2022.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 07/18/2022] [Accepted: 09/05/2022] [Indexed: 11/20/2022]
Abstract
BACKGROUND Our aim was to report the long-term outcomes of mandibular reconstruction using CAD-CAM-designed 3D-printed porous titanium implants in patients not amenable to a free vascularized fibula flap reconstruction. METHODS The implants were designed with ProPlan CMF® 2.2 software and manufactured with a Selective Laser Melting (SLM) "layer-by-layer" 3D-printing of pure porous titanium powder beds. Primary endpoints were implant exposure and implant removal calculated using Gray's tests. Secondary endpoints were predictive factors of implant exposure and implant removal, and rates of dental rehabilitation. RESULTS Thirty-six patients were operated between 2015 and 2017 and were included in this study. Reconstruction using a porous titanium 3D-printed implant was proposed due to medical contraindication for a fibula free flap (n = 13), due to the failure of a previous fibula free flap reconstruction (n = 7), or due to refusal of a fibula free flap reconstruction by the patient (n = 16). The medical indications for mandibular reconstruction were a primary tumor requiring mandibulectomy in nine patients, mandibular osteoradionecrosis requiring mandibulectomy in nineteen patients, and secondary reconstruction in eight patients. The 2-year rates of implant exposure and implant removal were 69.4% and 52.8%. Reconstruction of the symphysis was a high-risk exposure variable (OR 30; p = 0.0003). Only one patient underwent a successful dental rehabilitation. CONCLUSION The use of a porous titanium 3D- implant for mandibular reconstruction in head and neck cancer patients resulted in high rates of implant exposure and of implant removal, notably when symphysis involvement.
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Affiliation(s)
- Fabienne Haroun
- Department of Head and Neck Oncology, Gustave Roussy Institute, University Paris Saclay, 114 Rue Edouard Vaillant, Villejuif 94800, France; BioMaps (UMR1281), University Paris Saclay, CNRS, INSERM, CEA, Orsay, France
| | - Nadia Benmoussa
- Department of Head and Neck Oncology, Gustave Roussy Institute, University Paris Saclay, 114 Rue Edouard Vaillant, Villejuif 94800, France
| | - François Bidault
- BioMaps (UMR1281), University Paris Saclay, CNRS, INSERM, CEA, Orsay, France; Department of Radiology, Gustave Roussy Institute, University Paris Saclay, Villejuif, France
| | - Nathalie Lassau
- BioMaps (UMR1281), University Paris Saclay, CNRS, INSERM, CEA, Orsay, France; Department of Radiology, Gustave Roussy Institute, University Paris Saclay, Villejuif, France
| | - Antoine Moya-Plana
- Department of Head and Neck Oncology, Gustave Roussy Institute, University Paris Saclay, 114 Rue Edouard Vaillant, Villejuif 94800, France
| | - Nicolas Leymarie
- Department of Plastic and Reconstructive Surgery, Gustave Roussy Institute, University Paris Saclay, Villejuif, France
| | - Jean-François Honart
- Department of Plastic and Reconstructive Surgery, Gustave Roussy Institute, University Paris Saclay, Villejuif, France
| | - Fréderic Kolb
- Plastic and Reconstructive Surgery, UC San Diego, University of California, CA, United States
| | | | - Philippe Gorphe
- Department of Head and Neck Oncology, Gustave Roussy Institute, University Paris Saclay, 114 Rue Edouard Vaillant, Villejuif 94800, France.
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Zheng L, Wang C, Hu M, Apicella A, Wang L, Zhang M, Fan Y. An innovative additively manufactured implant for mandibular injuries: Design and preparation processes based on simulation model. Front Bioeng Biotechnol 2022; 10:1065971. [PMID: 36507282 PMCID: PMC9729797 DOI: 10.3389/fbioe.2022.1065971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/15/2022] [Indexed: 11/25/2022] Open
Abstract
Objective: For mandibular injury, how to utilize 3D implants with novel structures to promote the reconstruction of large mandibular bone defect is the major focus of clinical and basic research. This study proposed a novel 3D titanium lattice-like implant for mandibular injuries based on simulation model, which is designed and optimized by a biomechanical/mechanobiological approach, and the working framework for optimal design and preparation processes of the implant has been validated to tailored to specific patient biomechanical, physiological and clinical requirements. Methods: This objective has been achieved by matching and assembling different morphologies of a lattice-like implant mimicking cancellous and cortical bone morphologies and properties, namely, an internal spongy trabecular-like structure that can be filled with bone graft materials and an external grid-like structure that can ensure the mechanical bearing capacity. Finite element analysis has been applied to evaluate the stress/strain distribution of the implant and bone graft materials under physiological loading conditions to determine whether and where the implant needs to be optimized. A topological optimization approach was employed to improve biomechanical and mechanobiological properties by adjusting the overall/local structural design of the implant. Results: The computational results demonstrated that, on average, values of the maximum von-Mises stress in the implant model nodes could be decreased by 43.14% and that the percentage of optimal physiological strains in the bone graft materials can be increased from 35.79 to 93.36% since early regeneration stages. Metal additive manufacturing technology was adopted to prepare the 3D lattice-like implant to verify its feasibility for fabrication. Following the working framework proposed in this study, the well-designed customized implants have both excellent biomechanical and mechanobiological properties, avoiding mechanical failure and providing sufficient biomechanical stimuli to promote new bone regeneration. Conclusion: This study is expected to provide a scientific and feasible clinical strategy for repairing large injuries of mandibular bone defects by offering new insights into design criteria for regenerative implants.
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Affiliation(s)
- Lingling Zheng
- Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, School of Engineering Medicine, Beihang University, Beijing, China
| | - Chao Wang
- Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, School of Engineering Medicine, Beihang University, Beijing, China,*Correspondence: Chao Wang, ; Yubo Fan,
| | - Min Hu
- The First Medical Center of PLA General Hospital, Department of Stomatology, Beijing, China
| | - Antonio Apicella
- Polytechnique School of Engineering and Base Science, University of Campania, Aversa, CE, Italy
| | - Lizhen Wang
- Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, School of Engineering Medicine, Beihang University, Beijing, China
| | - Ming Zhang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, School of Engineering Medicine, Beihang University, Beijing, China,*Correspondence: Chao Wang, ; Yubo Fan,
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7
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Naujokat H, Rohwedder J, Gülses A, Cenk Aktas O, Wiltfang J, Açil Y. CAD/CAM scaffolds for bone tissue engineering: investigation of biocompatibility of selective laser melted lightweight titanium. IET Nanobiotechnol 2021; 14:584-589. [PMID: 33010133 DOI: 10.1049/iet-nbt.2019.0320] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The objective of the current in-vitro study was to evaluate the biocompatibility of a new type of CAD/CAM scaffold for bone tissue engineering by using human cells. Porous lightweight titanium scaffolds and Bio-Oss® scaffolds as well as their eluates were used for incubation with human osteoblasts, fibroblasts and osteosarcoma cells. The cell viability was assessed by using fluorescein diazo-acetate propidium iodide staining. Cell proliferation and metabolism was examined by using MTT-, WST-Test and BrdU-ELISA tests. Scanning electron microscope was used for investigation of the cell adhesion behaviour. The number of devitalised cells in all treatment groups did not significantly deviate from the control group. According to MTT and WST results, the number of metabolically active cells was decreased by the eluates of both test groups with a more pronounced impact of the eluate from Bio-Oss®. The proliferation of the cells was inhibited by the addition of the eluates. Both scaffolds showed a partial surface coverage after 1 week and an extensive to complete coverage after 3 weeks. The CAD/CAM titanium scaffolds showed favourable biocompatibility compared to Bio-Oss® scaffolds in vitro. The opportunity of a defect-specific design and rapid prototyping by selective laser melting are relevant advantages in the field of bone tissue engineering and regenerative medicine.
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Affiliation(s)
- Hendrik Naujokat
- Department of Oral and Maxillofacial Surgery, University Hospital of Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Johanna Rohwedder
- Department of Oral and Maxillofacial Surgery, University Hospital of Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Aydin Gülses
- Department of Oral and Maxillofacial Surgery, University Hospital of Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105 Kiel, Germany.
| | - Oral Cenk Aktas
- Institute for Materials Science, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Jörg Wiltfang
- Department of Oral and Maxillofacial Surgery, University Hospital of Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Yahya Açil
- Department of Oral and Maxillofacial Surgery, University Hospital of Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105 Kiel, Germany
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8
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Retrospective analysis of complications in 190 mandibular resections and simultaneous reconstructions with free fibula flap, iliac crest flap or reconstruction plate: a comparative single centre study. Clin Oral Investig 2020; 25:2905-2914. [PMID: 33025147 PMCID: PMC8060197 DOI: 10.1007/s00784-020-03607-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/25/2020] [Indexed: 11/30/2022]
Abstract
Objectives The purpose of this study was to evaluate the incidence of complications following mandibular reconstruction and to analyse possible contributing factors. Materials and methods Clinical data and computed tomography scans of all patients who needed a mandibular reconstruction with a reconstruction plate, free fibula flap (FFF) or iliac crest (DCIA) flap between August 2010 and August 2015 were retrospectively analysed. Results One hundred and ninety patients were enrolled, encompassing 77 reconstructions with reconstruction plate, 89 reconstructions with FFF and 24 reconstructions with DCIA flaps. Cutaneous perforation was most frequently detected in the plate subgroup within the early interval and overall (each p = 0.004). Low body mass index (BMI) and total radiation dosage were the most relevant risk factors for the development of analysed complications. Conclusions Microvascular bone flaps have overall less skin perforation than reconstruction plates. BMI and expected total radiation dosage have to be respected in choice of reconstructive technique. Clinical relevance A treatment algorithm for mandibular reconstructions on the basis of our results is presented. Electronic supplementary material The online version of this article (10.1007/s00784-020-03607-8) contains supplementary material, which is available to authorized users.
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9
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Xia Y, Feng ZC, Li C, Wu H, Tang C, Wang L, Li H. Application of additive manufacturing in customized titanium mandibular implants for patients with oral tumors. Oncol Lett 2020; 20:51. [PMID: 32788938 PMCID: PMC7416405 DOI: 10.3892/ol.2020.11912] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 06/18/2020] [Indexed: 01/03/2023] Open
Abstract
The application of additive manufacturing (AM) technology has been widely used in various medical fields, including craniomaxillofacial surgery. The aim of the present study was to examine the surgical efficiency and post-operative outcomes of patient-specific titanium mandibular reconstruction using AM. Major steps in directly designing and manufacturing 3D customized titanium implants are discussed. Furthermore, pre-operative preparations, surgical procedures and post-operative treatment outcomes were compared among patients who received mandibular reconstruction using a customized 3D titanium implant, titanium reconstruction plates or vascularized autologous fibular grafting. Use of a customized titanium implant significantly improved surgical efficiency and precision. When compared with mandibular reconstruction using the two conventional approaches, patients who received the customized implant were significantly more satisfied with their facial appearance, and exhibited minimal post-operative complications in the 12-month follow-up period. Patients who underwent mandibular reconstruction using a customized titanium implant displayed improved mandibular contour symmetry, restored occlusal function, normal range of mouth opening and no temporomandibular joint related pain; all complications frequently experienced by patients who undergo conventional approaches of mandibular reconstruction.
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Affiliation(s)
- Yan Xia
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Zhi Chao Feng
- Rutgers School of Dental Medicine, Rutgers University, Newark, NJ 07103, USA
| | - Changchun Li
- Department of Stomatology, The Second Hospital of Nanjing, Nanjing, Jiangsu 210003, P.R. China
| | - Heming Wu
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Chunbo Tang
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Lihua Wang
- AK Medical Holdings Limited, Beijing 100101, P.R China
| | - Hongwei Li
- Jiangsu Key Laboratory of Oral Disease, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China.,Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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10
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Hirohata H, Yanagawa T, Takaoka S, Yamagata K, Sasaki K, Shibuya Y, Uchida F, Fukuzawa S, Tabuchi K, Hasegawa S, Ishibashi-Kanno N, Sekido M, Bukawa H. A small number of residual teeth after the mandibular resection of oral cancer is associated with titanium reconstruction plate exposure. Clin Exp Dent Res 2019; 5:469-475. [PMID: 31687179 PMCID: PMC6820575 DOI: 10.1002/cre2.208] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/24/2019] [Accepted: 05/18/2019] [Indexed: 12/03/2022] Open
Abstract
Objective Reconstruction plates are used to treat patients with a segmental mandibular defect after oral cancer surgery. Reconstruction plate failure analysis has rarely focused on occlusion, which conducts a mechanical force to the mandible and the plate. To determine the prognostic factors, we retrospectively evaluated patients who underwent reconstruction of a mandibular segmental defect with a reconstruction plate and assessed the number of residual paired teeth. Material and Methods From among 390 patients with oral cancer who visited University of Tsukuba Hospital (Tsukuba, Japan) between 2007 and 2017, we selected and analyzed the data of 37 patients who underwent segmental resection of the mandible and reconstruction with reconstruction plates. Prognostic factors evaluated were patient age, sex, TNM classification, plate manufacturer, treatment with radiotherapy or chemotherapy, whether the patient had diabetes or smoked, and whether the patient had a small number of residual paired teeth, plate length, and use of a fibular‐free flap. Among these 37 patients, eight reconstruction plates had intraoral or extraoral exposure and were removed in 5 years. Results Kaplan–Meier and log‐rank analyses revealed that the prognosis for the 5‐year plate exposure‐free rate was significantly poorer for patients with a small number of residual teeth than for patients with no teeth or those with a large number of residual teeth (.01). Univariate Cox regression analysis revealed that a small number of residual teeth was a significant prognostic factor in the loss of a reconstruction plate (hazard ratio: 5.63; 95% confidence interval [1.10, 25.85]; .04). Conclusions A small number of residual teeth after the segmental resection of oral cancer is significantly involved in reconstruction plate survival and may be important in predicting reconstruction plate prognosis.
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Affiliation(s)
- Hiromi Hirohata
- Oral and Maxillofacial Surgery, Clinical Sciences, Graduate School of Comprehensive Human Sciences University of Tsukuba Tsukuba Japan.,Department of Oral and Maxillofacial Surgery Tsukuba Central Hospital Ushiku Japan
| | - Toru Yanagawa
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan.,Department of Oral and Maxillofacial Surgery Ibaraki Prefectural Central Hospital Kasama Japan
| | - Shohei Takaoka
- Oral and Maxillofacial Surgery, Clinical Sciences, Graduate School of Comprehensive Human Sciences University of Tsukuba Tsukuba Japan
| | - Kenji Yamagata
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Kaoru Sasaki
- Department of Plastic and Reconstruction Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Yoichiro Shibuya
- Department of Plastic and Reconstruction Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Fumihiko Uchida
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Satoshi Fukuzawa
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Katsuhiko Tabuchi
- Department of Neurohealth Innovation, Institute for Biomedical Sciences Interdisciplinary Cluster for Cutting Edge Research, Department of Molecular & Cellular Physiology Shinshu University School of Medicine Matsumoto Japan
| | - Shogo Hasegawa
- Department of Oral and Maxillofacial Surgery, Department of Maxillofacial Surgery, School of Dentistry Aichi Gakuin University Nagoya Japan
| | - Naomi Ishibashi-Kanno
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Mitsuru Sekido
- Department of Plastic and Reconstruction Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Hiroki Bukawa
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
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Mechanobiologically optimization of a 3D titanium-mesh implant for mandibular large defect: A simulated study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109934. [DOI: 10.1016/j.msec.2019.109934] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/24/2019] [Accepted: 07/01/2019] [Indexed: 12/21/2022]
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12
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Gruichev D, Yovev T, Kniha K, Möhlhenrich S, Goloborodko E, Lethaus B, Hölzle F, Modabber A. Evaluation of alloplastic mandibular reconstruction combined with a radial forearm flap compared with a vastus lateralis myocutaneous flap as the first approach to two-stage rehabilitation in advanced oral cancer. Br J Oral Maxillofac Surg 2019; 57:435-441. [DOI: 10.1016/j.bjoms.2019.03.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 03/29/2019] [Indexed: 11/26/2022]
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13
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Establishment of a Numerical Model to Design an Electro-Stimulating System for a Porcine Mandibular Critical Size Defect. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9102160] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Electrical stimulation is a promising therapeutic approach for the regeneration of large bone defects. Innovative electrically stimulating implants for critical size defects in the lower jaw are under development and need to be optimized in silico and tested in vivo prior to application. In this context, numerical modelling and simulation are useful tools in the design process. In this study, a numerical model of an electrically stimulated minipig mandible was established to find optimal stimulation parameters that allow for a maximum area of beneficially stimulated tissue. Finite-element simulations were performed to determine the stimulation impact of the proposed implant design and to optimize the electric field distribution resulting from sinusoidal low-frequency ( f = 20 Hz ) electric stimulation. Optimal stimulation parameters of the electrode length h el = 25 m m and the stimulation potential φ stim = 0.5 V were determined. These parameter sets shall be applied in future in vivo validation studies. Furthermore, our results suggest that changing tissue properties during the course of the healing process might make a feedback-controlled stimulation system necessary.
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14
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Prevention of Mandible Reconstruction Plate Exposure by Costal Cartilage Wrapping. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2017; 5:e1438. [PMID: 28894659 PMCID: PMC5585432 DOI: 10.1097/gox.0000000000001438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/13/2017] [Indexed: 11/26/2022]
Abstract
After mandibulectomy in cancer surgery, reconstruction is often performed with a reconstruction plate covered with a soft-tissue free flap in patients in poor condition. However, the rate of complications for mandibular reconstruction is higher with a reconstruction plate than with vascularized bone grafts. We have developed a costal cartilage wrapping method to prevent exposure of the mandible reconstruction plate. The eighth costal cartilage was removed and split into 2 pieces to wrap around the reconstruction plate. In our case, the artificial plate wrapped with costal cartilage graft was not exposed and the skin over the plate did not become atrophic over 27 months follow-up even after irradiation. Wrapping around an artificial reconstruction plate with autologous costal cartilage grafts may be more effective than using only a flap covering to prevent exposure of the plate after tumor ablation and radiation therapy.
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15
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Lundgren TK, Pignatti M, Halle M, Boscaini G, Skogh ACD, Luigi C, De Santis G. Composite orbital reconstruction using the vascularized segmentalized osteo-fascio-cutaneous fibula flap. J Plast Reconstr Aesthet Surg 2015; 69:255-61. [PMID: 26687794 DOI: 10.1016/j.bjps.2015.10.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/01/2015] [Accepted: 10/05/2015] [Indexed: 11/17/2022]
Abstract
Reconstruction of composite orbital defects must address the orbit and an exposed skull base and/or maxillary region. The orbit should not only be covered but also reshaped to accommodate the orbital contents or an epithesis when warranted. This study presents a rationale for a near-anatomical reconstruction of the orbit, together with adjacent dead space obliteration, using the segmentalized osteo-fascia-cutaneous fibula flap. Before the flap transfer, a cutting template for the fibula is made according to the measures and requirements of the facial defect. The segmentalized bone is then osteosynthesized to the facial skeleton and revascularized. Thus, an orbital depth is created by the bony fibula, whereas the fascio-cutaneous part of the flap may be used for lining the orbit and obliteration of the skull base or the maxillary region, or resurface the palate and/or the nasal cavity.
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Affiliation(s)
- T Kalle Lundgren
- Stockholm Craniofacial Center, Department of Reconstructive Plastic Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Marco Pignatti
- Department of Plastic and Reconstructive Surgery, Azienda Ospedaliero-Universitaria Policlinico di Modena, Modena, Italy
| | - Martin Halle
- Stockholm Craniofacial Center, Department of Reconstructive Plastic Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Giulia Boscaini
- Department of Plastic and Reconstructive Surgery, Azienda Ospedaliero-Universitaria Policlinico di Modena, Modena, Italy
| | - Ann-Charlotte Docherty Skogh
- Stockholm Craniofacial Center, Department of Reconstructive Plastic Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Chiarini Luigi
- Department of Cranio-Maxillofacial Surgery, Modena University Hospital, Policlinico di Modena, Italy
| | - Giorgio De Santis
- Department of Plastic and Reconstructive Surgery, Azienda Ospedaliero-Universitaria Policlinico di Modena, Modena, Italy.
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16
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Reiser V, Alterman M, Shuster A, Kleinman S, Shlomi B, Yanko-Arzi R, Zaretski A, Amir A, Fliss DM. V-stand--a versatile surgical platform for oromandibular reconstruction using a 3-dimensional virtual modeling system. J Oral Maxillofac Surg 2015; 73:1211-26. [PMID: 25981838 DOI: 10.1016/j.joms.2014.12.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 12/16/2014] [Accepted: 12/23/2014] [Indexed: 11/25/2022]
Abstract
PURPOSE The challenge of oromandibular reconstruction (OMR) after oncologic resections has been repeatedly addressed in the literature. Although final oncologic margins can be decided only during surgery, various attempts have been made to create an ideal and accurate platform for OMR. The purpose of this article is to present the V-stand, a versatile surgical platform for OMR using a 3-dimensional (3D) virtual modeling system. MATERIALS AND METHODS Seventeen patients requiring an OMR were included in the study. A presurgical computed tomogram was obtained and virtual resection and reconstruction with a free fibular flap were planned using 3D virtual surgery software. The mandible was reconstructed intraoperatively using the V-stand, which served as a template for the lower border of the mandible and the lateral aspects of the stand were fixed to the proximal mandibular segments using 2-mm titanium screws. RESULTS Patients' average age was 53 years (5 to 72 yr). Median follow-up was 19 months (2 to 35 months). All reconstructed mandibles resulted in good function and esthetics. CONCLUSIONS The V-stand offers a safe and time-efficient method for OMR. It provides an excellent means for accurate spatial positioning of a fibular free flap. The V-stand preserves the original dimensions of the reconstructed mandible and can overcome surgical ablation modifications because it is not dependent on the precision of the resection, but rather provides a mold for the entire mandible.
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Affiliation(s)
- Vadim Reiser
- Attending Physician, Department of Otolaryngology, Head and Neck Surgery and Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Michael Alterman
- Attending Physician, Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Hebrew University-Hadassah, Jerusalem, Israel.
| | - Amir Shuster
- Attending Physician, Department of Otolaryngology, Head and Neck Surgery and Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Shlomi Kleinman
- Attending Physician, Department of Otolaryngology, Head and Neck Surgery and Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Benjamin Shlomi
- Unit Head, Department of Otolaryngology, Head and Neck Surgery and Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ravit Yanko-Arzi
- Attending Physician, Department of Reconstructive and Aesthetic Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Arik Zaretski
- Attending Physician, Department of Reconstructive and Aesthetic Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Aharon Amir
- Department Head, Department of Plastic Surgery, Carmel Medical Center, Haifa, Israel
| | - Dan M Fliss
- Professor, Department Head, Department of Otolaryngology, Head and Neck Surgery and Maxillofacial Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
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17
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Fang SL, Wang YY, Chen WL, Zhang DM. Use of Extended Vertical Lower Trapezius Island Myocutaneous Flaps to Cover Exposed Reconstructive Plates. J Oral Maxillofac Surg 2014; 72:2092.e1-7. [DOI: 10.1016/j.joms.2014.06.420] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 06/02/2014] [Accepted: 06/05/2014] [Indexed: 10/25/2022]
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