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Zheng J, Huo L, Jiao Z, Wei X, Bu L, Jiang W, Luo Y, Chen M, Yang C. 3D-printed temporomandibular joint-mandible combined prosthesis: A prospective study. Oral Dis 2024; 30:1360-1366. [PMID: 37246472 DOI: 10.1111/odi.14597] [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: 08/22/2022] [Revised: 04/10/2023] [Accepted: 04/15/2023] [Indexed: 05/30/2023]
Abstract
OBJECTIVES The study aimed to introduce and evaluate a new customized temporomandibular joint-mandible combined prosthesis with 3D printing fabrication. MATERIALS AND METHODS This was a prospective study including patients with temporomandibular joint-mandible combined lesions. A 3D-printed customized temporomandibular joint-mandible combined prosthesis was implanted to repair the joint and jaw defect. Clinical follow-up and radiographic examinations were taken to assess the clinical efficacy. The assessment indices were compared by the Wilcoxon signed rank test. RESULTS Eight patients were treated with the combined prosthesis and included in this study. All prostheses were accurately positioned and fixed without wound infection, prosthesis exposure, displacement, loosening, or fracture. All cases had no mass recurrence at the last follow-up point. Pain, diet, mandibular function, lateral mandibular movement to the diseased side, and maximal interincisal opening showed significant improvements at every follow-up point and went to a stable condition at 6 months after the operation. But the lateral movement to the non-operated side was still limited following surgery. CONCLUSION The 3D-printed combined prosthesis may be an alternative to other well-established reconstructions for temporomandibular joint and mandible defects.
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Affiliation(s)
- Jisi Zheng
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
- National Clinical Research Center of Stomatology, Shanghai, China
| | - Liang Huo
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
- National Clinical Research Center of Stomatology, Shanghai, China
| | - Zixian Jiao
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
- National Clinical Research Center of Stomatology, Shanghai, China
| | - Xiang Wei
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
- National Clinical Research Center of Stomatology, Shanghai, China
| | - Lingtong Bu
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
- National Clinical Research Center of Stomatology, Shanghai, China
| | - Wenbo Jiang
- Center of 3D-printing translational medicine, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Luo
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
- National Clinical Research Center of Stomatology, Shanghai, China
| | - Minjie Chen
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
- National Clinical Research Center of Stomatology, Shanghai, China
| | - Chi Yang
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
- National Clinical Research Center of Stomatology, Shanghai, China
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Hoene G, Moser N, Schminke B, Wiechens B, Leha A, Khromov T, Schliephake H, Brockmeyer P. Postoperative facial appearance of patients with extensive oral squamous cell carcinoma can be adequately preserved with in‑house virtually planned mandibular reconstruction. Mol Clin Oncol 2023; 19:97. [PMID: 37953859 PMCID: PMC10636699 DOI: 10.3892/mco.2023.2693] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/27/2023] [Indexed: 11/14/2023] Open
Abstract
The present study aimed to assess the concordance of preoperative and postoperative hard and soft tissues in patients with advanced oral squamous cell carcinoma (OSCC) following virtual surgical planning (VSP) mandibular reconstruction. In the present study, a cohort of 32 patients with OSCC underwent in-house VSP, followed by guided mandibular reconstruction utilizing vascularized free tissue grafts sourced from the fibula or scapula. A morphometric analysis was conducted comparing preoperative and postoperative three-dimensional virtual models to evaluate discrepancies and identify potential risk factors associated with poor reconstruction outcomes. The outcome variables were the differences in root mean square (RMS) and mean surface distance (MSD) resulting from the application of an iterative closest point algorithm to the virtual data. The validity of soft tissue comparison data is limited due to its susceptibility to various confounding variables. The present study conducted a comprehensive re-evaluation of these variables. High tumor stage, positive N status and the use of adjuvant therapy contributed to more noticeable differences in preoperative and postoperative facial soft tissue appearance. The accuracy of postoperative bone reconstruction results was higher in patients who underwent neomandibular formation using a fibular graft compared with those who received a scapular graft. Preoperative and postoperative soft tissue analyses were conducted for comparison. The MSD showed a deviation of 3.2 mm (± 2.0 mm SD; range 1.3-9.5 mm), whereas the RMS was 5.3 (± 2.9 SD; range 2.1-14). In conclusion, in-house VSP and guided mandibular reconstructions can yield clinically accurate results, preserving patient appearance and offering the advantage of rapid feasibility.
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Affiliation(s)
- Georg Hoene
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, D-37075 Goettingen, Germany
| | - Norman Moser
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, D-37075 Goettingen, Germany
| | - Boris Schminke
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, D-37075 Goettingen, Germany
| | - Bernhard Wiechens
- Department of Orthodontics, University Medical Center Goettingen, D-37075 Goettingen, Germany
| | - Andreas Leha
- Institute of Medical Statistics, University Medical Center Goettingen, D-37073 Goettingen, Germany
| | - Tatjana Khromov
- Institute of Clinical Chemistry, University Medical Center Goettingen, D-37075 Goettingen, Germany
| | - Henning Schliephake
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, D-37075 Goettingen, Germany
| | - Phillipp Brockmeyer
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, D-37075 Goettingen, Germany
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Hagen N, Weichel F, Kühle R, Knaup P, Freudlsperger C, Eisenmann U. Automated calculation of ontology-based planning proposals: An application in reconstructive oral and maxillofacial surgery. Int J Med Robot 2023; 19:e2545. [PMID: 37395309 DOI: 10.1002/rcs.2545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 05/25/2023] [Accepted: 06/23/2023] [Indexed: 07/04/2023]
Abstract
BACKGROUND Structured modelling of surgical knowledge and its automated processing is still challenging. The aim of this work is to introduce a novel approach for automated calculation of ontology-based planning proposals in mandibular reconstruction and conduct a feasibility study. METHODS The presented approach is composed of an RDF(S) ontology, a 3D mandible template and a calculator-optimiser algorithm to automatically calculate reconstruction proposals with fibula grafts. To validate the viability of the approach, a feasibility study was conducted on 164 simulated mandibular reconstructions. RESULTS The ontology defines 244 different reconstruction variants and 80 analyses for optimization. In 146 simulated cases, a proposal could be automatically calculated (average time 8.79 ± 4.03 s). The assessments of the proposals by three clinical experts indicate the viability of the approach. CONCLUSIONS Due to the modular separation between computational logic and domain knowledge, the developed concepts can be easily maintained, reused and adapted for other applications.
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Affiliation(s)
- Niclas Hagen
- Institute of Medical Informatics, Heidelberg University Hospital, Heidelberg, Germany
| | - Frederic Weichel
- Department of Oral and Maxillofacial Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Reinald Kühle
- Department of Oral and Maxillofacial Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Petra Knaup
- Institute of Medical Informatics, Heidelberg University Hospital, Heidelberg, Germany
| | - Christian Freudlsperger
- Department of Oral and Maxillofacial Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Urs Eisenmann
- Institute of Medical Informatics, Heidelberg University Hospital, Heidelberg, Germany
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Kuehle R, Kuebler M, Fuchs J, Weichel F, Moratin J, Freier K, Engel M, Hoffmann J, Ristow O, Freudlsperger C. The value of prebent reconstruction plates and in-house 3D printing. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2023; 124:101381. [PMID: 36642249 DOI: 10.1016/j.jormas.2023.101381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/08/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Reconstruction plates, prebent on 3D printed models, are a cheap, quick, and safe solution to improve mandibular reconstruction procedures. The European Medical Device Regulation has changed recently and severely affects 3D printing in hospitals. Therefore, its legitimation must be discussed. This retrospective observational Case-Control Study aimed to evaluate the impact of prebent reconstruction plates on the condylar position in the temporomandibular joint after continuity resection of the mandible in oncological cases. MATERIALS AND METHODS We included patients who underwent segmental mandibular resection without exarticulation of the condyle or history of prior surgery. The patients were divided into groups with prebent plates on a stereolithographic model and intraoperatively bent reconstruction plates. The segmental defects were categorized using the Jewer Classification. Computed Tomography (CT) scans before and after surgery were analyzed using a standardized method to measure the metric movement of the condyles, as well as their angulation to reference planes to quantify positional changes (primary outcome measures). The influence of the defect location, according to the Jewer classification, was evaluated as a secondary outcome measure. RESULTS 73 patients, including 33 with preformed reconstruction plates, were included. We could show significantly fewer rotational deviations in cases of prefabricated osteosynthesis in the coronal plane (p<0,001) and in the sagittal plane (p<0,027). DISCUSSION Using preformed reconstruction plates on 3D printed models improves the correct anatomical position of the condyle after mandibular resection. Especially Jewer-class-L defects seem to benefit from individualized reconstruction plates.
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Affiliation(s)
- Reinald Kuehle
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany.
| | - Medea Kuebler
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
| | - Jennifer Fuchs
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
| | - Frederic Weichel
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
| | - Julius Moratin
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
| | - Kolja Freier
- University of Heidelberg Saarland, Department of Oral and Maxillofacial Surgery, Kirrberger Straße 100, D-66421 Homburg/Saar, Germany
| | - Michael Engel
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
| | - Jürgen Hoffmann
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
| | - Oliver Ristow
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
| | - Christian Freudlsperger
- University of Heidelberg, Department of Oral and Maxillofacial Surgery, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany
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Truscott A, Zamani R, Akrami M. Comparing the use of conventional and three-dimensional printing (3DP) in mandibular reconstruction. Biomed Eng Online 2022; 21:18. [PMID: 35305669 PMCID: PMC8934485 DOI: 10.1186/s12938-022-00989-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 03/07/2022] [Indexed: 11/17/2022] Open
Abstract
Background There are a number of clinical disorders that require mandibular reconstruction (MR). Novel three-dimensional (3D) printing technology enables reconstructions to be more accurate and beneficial to the patient. However, there is currently no evidence identifying which techniques are better suited for MR, based on the type of clinical disorder the patient has. In this study, we aim to compare 3D techniques with conventional techniques to identify how best to reconstruct the mandible based on the clinical cause that necessitates the reconstructive procedure: cancerous or benign tumours, clinical disorders, infection or disease and trauma or injury. Methods PubMed, Scopus, Embase and Medline were searched to identify relevant papers that outline the clinical differences between 3D and conventional techniques in MR. Data were evaluated to provide a clear outline of suitable techniques for surgery. Results 20 of 2749 papers met inclusion criteria. These papers were grouped based on the clinical causes that required MR into four categories: malignant or benign tumour resection; mandibular trauma/injury and other clinical disorders. Conclusions The majority of researchers favoured 3D techniques in MR. However, due to a lack of standardised reporting in these studies it was not possible to determine which specific techniques were better for which clinical presentations.
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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: 14] [Impact Index Per Article: 3.5] [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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Dean A, Alamillos F, Heredero S, Redondo-Camacho A, Guler I, Sanjuan A. Fibula free flap in maxillomandibular reconstruction. Factors related to osteosynthesis plates' complications. J Craniomaxillofac Surg 2020; 48:994-1003. [PMID: 32893092 DOI: 10.1016/j.jcms.2020.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/03/2020] [Accepted: 08/09/2020] [Indexed: 10/23/2022] Open
Abstract
The aim of this paper is to identify risk factors associated with the development of osteosynthesis plates' related complications in fibula free flap reconstructions. This is a case series study of consecutive fibula free flaps. Clinical and radiological variables were recorded. Patient outcomes were evaluated with special attention to osteosynthesis plates' related complications; these included plate exposure, plate fracture, loosening of screws, non-union, bone resorption, oro-cutaneous fistulas, and bone exposure. We have done a descriptive analysis, univariate analysis, and multivariate logistic regression model to explore possible risk factors for osteosynthesis plates' related complications. Data analysis was performed using R software (version 3.5.0). 111 fibula free flaps were studied. 29 patients (26.1%) developed osteosynthesis plates' related complications. The mean time to osteosynthesis plates' related complications was 22 months; range (1-120); the median and mode were 12 months. Patients with preoperative radiotherapy (34% vs 14%, p = 0.021), and secondary reconstruction (31% vs 15%, p = 0.053) had a higher incidence of osteosynthesis plates' related complications. In the univariate analysis, "preoperative radiotherapy" (OR 3.07, 95%CI = 1.139-8.242, p = 0.025) and "extraoral soft-tissue defect" (OR 2.907, 95%CI = 1.032-8.088, p = 0.042) were risk factors for osteosynthesis plates' related complications. We have observed an interaction effect: patients with mandibular Brown's classes III + IV and "secondary reconstruction" have a higher risk for osteosynthesis plates' related complications; more than 47.30 times compared to Brown's class I and "primary reconstruction" (p = 0.026). Different factors may contribute to the development of osteosynthesis plates' related complications. Our study adds important information about these. Patients with higher risk of developing complications should be informed that a second intervention to remove the plates might be necessary.
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Affiliation(s)
- Alicia Dean
- Head of Oral and Maxillofacial Surgery Department, Reina Sofía University Hospital, Córdoba, Spain; Medical School, Córdoba University, Spain.
| | - Francisco Alamillos
- Medical School, Córdoba University, Spain; Oral and Maxillofacial Surgery Service, Reina Sofía University Hospital, Córdoba, Spain
| | - Susana Heredero
- Oral and Maxillofacial Surgery Service, Reina Sofía University Hospital, Córdoba, Spain
| | | | - Ipek Guler
- Unit of Biostatistics, Maimonides Biomedical Research Institute of Córdoba (IMIBIC), Reina Sofía University Hospital, University of Córdoba, Córdoba, Spain
| | - Alba Sanjuan
- Oral and Maxillofacial Surgery Service, Reina Sofía University Hospital, Córdoba, Spain
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Design and Fabrication of Implants for Mandibular and Craniofacial Defects Using Different Medical-Additive Manufacturing Technologies: A Review. Ann Biomed Eng 2020; 48:2285-2300. [PMID: 32691264 DOI: 10.1007/s10439-020-02567-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 07/10/2020] [Indexed: 10/23/2022]
Abstract
Mandibular and craniofacial bone defects can be caused by trauma, inflammatory disease, and benign or malignant tumors. Patients with bone defects suffer from problems with aesthetics, speech, and mastication, resulting in the need for implants. Conventional methods do not always provide satisfactory results. Most of the techniques proposed by researchers in the field of biomedical engineering use reverse engineering, computer-aided design (CAD), and additive manufacturing (AM), whose implementation can improve the outcomes of reconstructive surgeries. Several literature reviews on this particular topic have been conducted. However, they provide mostly overviews of AM technologies for general biomedical devices. This paper summarizes the use of existing medical AM techniques for the design and fabrication of mandibular and craniofacial implants, and then discusses their advantages and disadvantages in terms of accuracy, costs, energy consumption, and production rate. The aim of this study is to present a comparative review of the most commonly used AM technologies to aid researchers in selecting the best possible AM technologies for medical use. Studies included in this review contain CAD designs of mandibular or cranial implants, as well as their fabrication using AM technologies. Special attention is paid to PolyJet technology, because of its high accuracy, and economical efficiency.
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Jehn P, Spalthoff S, Korn P, Zeller AN, Dittmann J, Zimmerer R, Tavassol F, Gellrich NC. Patient-specific implant modification for alloplastic bridging of mandibular segmental defects in head and neck surgery. J Craniomaxillofac Surg 2020; 48:315-322. [DOI: 10.1016/j.jcms.2020.01.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 01/17/2020] [Accepted: 01/28/2020] [Indexed: 11/16/2022] Open
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