Fig 24 - uploaded by Vaibhav Bagaria
Content may be subject to copyright.
Context in source publication
Context 1
... 23. Preoperative clinical, Ct images of a case of Temporomandibular (TMJ) joint ankylosis. For the purpose, a preoperative computed tomography (CT) scan of the jaws and jaw joints was obtained using a specific protocol. Using the CT data in form of DIACOM images, a 3- D ABS plastic model of the joint and associated structures was made using stereo lithographic technology and CAD (Fig 24). The mandible was spatially repositioned on the model to correct the functional and aesthetic misalignment problems. From these models the
...
Similar publications
Deana, Alessandro M. Wetter, Niklaus U. Baldochi, Sonia L. Ranieri, Izilda M.
Citations
... Por exemplo, a criação de acessórios em PLA para equipamentos de imagem médica e dispositivos ópticos [12,14]. No entanto, apesar de recentes avanços médicos significativos com uso de manufatura aditiva e o processo FDM, ainda existem muitos desafios científicos e regulatórios a serem superados [15][16]. Várias empresas de dispositivos médicos têm surgido para atender um mercado customizado e de alto valor agregado com o uso da manufatura aditiva. ...
Additive (MA) technology or 3D printing is a manufacturing principle used in many biomedical engineering applications for product and prototype customization. The MA allows the production of parts with complex geometries, in a shorter production time and costs. The FDM process is the most common and affordable technology that uses thermomoldable polymers heated and deposited in layers to form a real object. This chapter will discuss some of these applications in biomedical engineering as well as their limitations and future perspectives. Resumo A tecnologia de manufatura aditiva ou impressão 3D é um princípio de fabricação utilizado em várias aplicações de engenharia biomédica para customização de produtos e protótipos. A manufatura aditiva permite a produção de peças com geometria complexas, em menor tempo de produção e custo. O processo de modelagem por fusão e deposição (FDM) é a tecnologia mais comum e acessível que utiliza polímeros termomoldáveis aquecidos e depositados em camadas para formar um objeto real. Neste capítulo serão discutidas algumas destas aplicações na engenharia biomédica bem como suas limitações e perspectivas futuras.
... The RP method is whether it is sequential, class, or printed. The RP process uses the following steps to create prototypes [13]: ...
Application of Reverse Engineering and Rapid Prototyping for Reconstruction of Human
Mandible
... The RP method is whether it is sequential, class, or printed. The RP process uses the following steps to create prototypes [13]: ...
Reconstruction of the mandible is one of the most common challenges facing maxillofacial surgeons. The mandible plays a major role in supporting the teeth inside the mouth. This work aims to develop a proposed methodology for improving reconstructive surgery by using the simulation of a mandibular defect using imaging, design and fabrication techniques for a custom mandible. The combination of these technologies provides a powerful way to improve and implement the implant process through the design and fabrication of medical models. This work introduces a methodology that the capabilities of Reverse Engineering (RE), Computer-Aided Design (CAD), and Rapid Prototyping Technology (RP) for the reconstruction of the mandible and representing the surgery. Patient examination using a high-resolution technique represented by Cone-beam computed tomography (CBCT), after which a representative digital model of the patient is created to assist in the design process using the 3DSlicer software The patient's implant designed (Defect part) and analyzed using Solidwork.3D models are assembled and implant simulations are performed by (Meshmixer) software, Stereolithography technology (SLA) used as 3D printing technology to fabricate the mandible model the resin. The results of this work show that procedures for mandible reconstruction can be successfully used using the integration of RE / CAD / RP technologies. This integration will support the acceptable symmetry of the face that will be restored by assisting surgeons in planning reconstruction. This work demonstrates the importance of the CAD system in resolving patient damage requirements directly from medical imaging data, as well as the efficiency of RP techniques used in converting 3D model designs into implant models.
... This technology is also known as rapid prototyping, digital fabrication, solid imaging, free-form fabrication, layer-based manufacturing, and laser prototyping. The process involves building prototypes or working models in a relatively short time to help the creation and the testing of various design features, ideas, concepts, functionalities, and in certain instances, the outcome and performance (Bagaria et al., 2011). Nowadays, there is a growing need and expectation of more rapid bespoke production, in order to both deliver the rapid prototyping of more products and variants and to support specialist products and obsolete parts globally and locally. ...
The current fourth industrial revolution, or ‘Industry 4.0’ (I4.0), is driven by digital data, connectivity, and cyber systems, and it has the potential to create impressive/new business opportunities. With the arrival of I4.0, the scenario of various intelligent systems interacting reliably and securely with each other becomes a reality which technical systems need to address. One major aspect of I4.0 is to adopt a coherent approach for the semantic communication in between multiple intelligent systems, which include human and artificial (software or hardware) agents. For this purpose, ontologies can provide the solution by formalizing the smart manufacturing knowledge in an interoperable way. Hence, this paper presents the few existing ontologies for I4.0, along with the current state of the standardization effort in the factory 4.0 domain and examples of real-world scenarios for I4.0.
... Penerapan metode printer 3D untuk cranioplasty di Indonesia, selain terkendala hal-hal non teknis seperti harga alat dan material yang mahal, juga menyangkut kontinuitas ketersediaan alat dan material serta proteksi teknologi. Untuk keperluan itu, beberapa modifikasi telah dilakukan, yang merupakan keaslian dari penelitian ini; mengacu pada tahapan proses produksi implan pra-operasi yang sudah dilakukan di negara-negara maju dan sudah diterapkan pada banyak pasien, yaitu proses reverse engineering – rapid prototyping – printer 3D menurut rujukan[15],[16]dan[17], untuk pembuatan implan penutup defek pada bedah cranioplasty. Bisa dilihat di Tabel 10. ...
Abstract— Manufacture of pre-surgery implant may shorten the surgery duration and blood loss risk which provide medical benefit for patient. Additive manufacturing technology (AMT) have been applied in manufacture of pre-implant for cranioplasty surgery. Application of AMT allows production of pre-surgery implant with good geometrical accuracy. The most popular and potential printer 3D technology for mass developed in medical, is fused deposition modeling/FDM, because capable of producing its porosity high with a pattern laydown and the mechanical force good. However, FDM technology have some drawbacks i.e. the use of single type material, limited types of materials, and operation at high temperatures. This research was conducted to develop pre-surgery implants based on additive manufacturing technology to reconstruct and redesign cranial bone defects in Indonesia. This research produced 3D printer-based of injection moulding method by modifying tools, materials, steps, and pre-surgery implants production system based on the additive manufacturing for cranioplasty. Geomatrical accuracy of implant was measured in term of volume deviation, thickness deviation, linear length deviation and surface curve angle deviation of implants. The study comparing two different methods tested: cranial/intra-operative method and injection moulding method using PMMA material. The result showed that implant manufactured by 3D printer based mould have a higher geometrical accuracy as compared to cranial method. Volume deviation on the produced implants is 1.87 ± 1.27 % (injection moulding) compared to 11.39 ± 3.71 % (cranial method), thickness deviation of 2.54 ± 0.86 % (injection moulding) compared to 7.35 ± 1.43 % (cranial method), linear length deviation of 2.61 ± 0.47% (injection moulding) compared to 5.76 ± 0.79 % (cranial method), curve length deviation of 1.54 ± 0.77% (injection moulding) compared to 6.34 ± 0.99 % (cranial method) and surface curve angle deviation of 0.98 ± 0 % (injection moulding) compared to 15.45 ± 3.94 % (cranial method). From the data, it can be concluded that the injection moulding method is better suited than the cranial/intra-operative method. Keywords: cranial bone defects, cranioplasty, 3D printer, injection moulding, FDM, PMMA.
Perkembangan teknologi printer 3D untuk medis, memungkinkan aplikasi produksi implan pra-operasi dengan keunggulan akurasi geometri yang baik, mengurangi waktu operasi dan resiko kehilangan banyak darah. Teknologi printer 3D paling populer dan potensial untuk dikembangkan masal di Indonenesia adalah fused deposition modeling/FDM. Akan tetapi memiliki kekurangan: single material, jenis material terbatas dan temperatur yang tinggi sehingga tidak bisa dicampur dengan material/senyawa bioaktif yang sensitif terhadap panas. Pengembangan metode injection moulding berbasis printer 3D telah dilakukan pada penelitian ini dengan melakukan modifikasi alat, material, tahapan dan sistim produksi implan pra-operasi yang mengacu pada teknologi printer 3D untuk cranioplasty yang sudah dilakukan di negara maju. Untuk memastikan modifikasi ini bisa menghasilkan implan pra-operasi dengan akurasi geometri yang diinginkan, dilakukan karakterisasi terhadap deviasi dimensi implan yang diproduksi yaitu deviasi volume, deviasi tebal, deviasi panjang linear dan deviasi sudut kelengkungan permukaan implan, pada dua metode berbeda yang diuji, yaitu metode cranial/intra operatif dan metode injection moulding dengan menggunakan material polymethylmethacrylate/ PMMA. Hasil yang didapatkan adalah deviasi volume implan yaitu sebesar 1.87 ± 1.27 % (injection moulding) dibandingkan 11.39 ± 3.71 % (metode cranial), deviasi tebal sebesar 2.54 ± 0.86 % (injection moulding) dibandingkan 7.35 ± 1.43 % (metode cranial), deviasi panjang linear sebesar 2.61 ± 0.47% (injection moulding) dibandingkan 5.76 ± 0.79 % (metode cranial) dan deviasi sudut kelengkungan permukaan sebesar 0.98 ± 0 % (injection moulding) dibandingkan 15.45 ± 3.94 % (metode cranial). Dapat diambil kesimpulan bahwa metode injection moulding lebih baik daripada metode cranial/intra operatif. Kata Kunci— cranial bone defects, cranioplasty, printer 3D, injection moulding, FDM, PMMA.
... These 3D virtual models of fragmented objects could be good 3D reference for the assembling, repairing and reconstructing process. To verify the virtual model and conduct assembly planning (mainly for surgical planning), researchers have recently begun to use physical rapid prototyping technologies to construct full physical models (Bonora et al. 2008;Bagaria et al. 2011;Scopigno et al. 2011;Smith et al. 2013). These physical models can give operators better understanding about the fragments to be assembled and the full object shape so as to evaluate and correct the virtual assembly errors. ...
... A reduced-scale physical model, created by rapid prototyping system, was used to present a physical showing of a virtual 3D model and enhance the communication (Bonora et al. 2008). In medical applications, 3D physical prototyping models were generated by using CT (computed tomography) data and 3D printing technologies to help verifying the virtual 3D reconstruction and aiding the physical operation planning (Bagaria et al. 2011;Smith et al. 2013). In these jobs, virtual and physical prototyping methods were already integrated for solving the reconstruction problem. ...
In 3D reconstruction application domains, for example, repairing relics, bone fracture surgery, the reassembly of fragmented objects is required. Intensive research has focused on virtual 3D reconstruction but very little attention was paid to the physical assembly process where original segments are dealt with. To obtain a good reassembly result with reduced damage risk, assembly error and operation time, it is not enough to only use a 3D virtual model or a physical prototype model as assembly reference. The assembly sequence and the assembly operation should be investigated. To support the physical reconstruction, an integrated method which uses both virtual and physical prototyping technologies with human interaction is proposed. This paper mainly discusses the physical assembly sequence optimisation which is the partial implementation of the proposed method. An experimental pilot case study is presented to demonstrate the importance and potential of the method.
... Orthopaedic surgeons develop experience in interpreting such 2D images when devising their operative strategies. More recently, advances in radiology combined with advances in computer and manufacturing technology have made the three-dimensional (3D) representation of anatomic structures relatively easily obtainable [7,8]. Such images can be rotated and viewed from various angles, improving 2 Advances in Orthopedics anatomical appreciation, but they must still be viewed on a flat 2D computer screen. ...
... The origins of this technique can be traced back to the 1960s when Professor Herbert Voelcker described theories and algorithms for 3D model fabrication. Carl Deckard developed a technique to bind metal powders to create a 3D model in the University of Texas in 1987, before Charles Hull patented the first 3D printer in 1988 in California [8,11]. Rapid prototyping has been used in the medical industry since the early 2000s, initially in the production of dental implants and patientspecific prostheses [12]. ...
... A 3D image of the isolated anatomy of interest was created on MIMICS. The imported file was saved in the .STL (stereolithographic) format which allows instructions related to the shape, thickness, and texture of the 3D image to be communicated to the 3D printer [8,11]. The two models were manufactured using the rapid prototyping process, selective laser scintigraphy (SLS). ...
Revision hip arthroplasty requires comprehensive appreciation of abnormal bony anatomy. Advances in radiology and manufacturing technology have made three-dimensional (3D) representation of osseous anatomy obtainable, which provide visual and tactile feedback. Such life-size 3D models were manufactured from computed tomography scans of three hip joints in two patients. The first patient had undergone multiple previous hip arthroplasties for bilateral hip infections, resulting in right-sided pelvic discontinuity and a severe left-sided posterosuperior acetabular deficiency. The second patient had a first-stage revision for infection and recurrent dislocations. Specific metal reduction protocols were used to reduce artefact. The images were imported into Materialise MIMICS 14.12®. The models were manufactured using selective laser sintering. Accurate templating was performed preoperatively. Acetabular cup, augment, buttress, and cage sizes were trialled using the models, before being adjusted, and resterilised, enhancing the preoperative decision-making process. Screw trajectory simulation was carried out, reducing the risk of neurovascular injury. With 3D printing technology, complex pelvic deformities were better evaluated and treated with improved precision. Life-size models allowed accurate surgical simulation, thus improving anatomical appreciation and preoperative planning. The accuracy and cost-effectiveness of the technique should prove invaluable as a tool to aid clinical practice.
... Alur kerja dalam penelitian ini, seperti bisa dilihat padaDeviasi, 2014;van der Meer et al. 2012;Bagaria et al., 2011;Zhao et al. 2008) untuk pembuatan implan penutup defek pada bedah cranioplasty; seperti bisa dilihat pada ...
Pre-surgery implantation can shorten the duration of surgery and the risk of blood loss that provides medical benefits to the patient. Additive manufacturing technology (AMT) has been applied in the manufacture of pre-implants for cranioplasty surgery. The application of AMT allows the production of pre-operative implants with good geometric accuracy and helps achieve aesthetics, particularly in cases of defects with large apertures. The most popular and potential printer 3D technology for mass developed in medical, is fused deposition modeling/FDM, because capable of producing its high porosity with a pattern laydown, mechanical force good, as well as the printer and material prices are relatively cheap and allows for developing countries. However, FDM technology have some drawbacks i.e. the use of single type material, limited types of materials, and operation at high temperatures. This research was conducted to develop pre-surgery implants based on AMT to reconstruct and redesign cranial bone defects in Indonesia.
This research produced 3D printer-based of injection moulding method by modifying tools, materials, steps, and pre-surgery implants production system based on the additive manufacturing for cranioplasty. Geomatrical accuracy of implant was measured in term of volume deviation, thickness deviation, linear
length deviation, curve length deviation and surface curve angle deviation of implants. The study comparing two different methods tested: cranial/intra-operative method and injection moulding method using PMMA material.
The result showed that implant manufactured by 3D printer based mould have a higher geometrical accuracy as compared to cranial method. Volume deviation on the produced implants is 1.87 ± 1.27 % (injection moulding) compared to 11.39 ± 3.71 % (cranial method), thickness deviation of 2.54 ± 0.86 % (injection
moulding) compared to 7.35 ± 1.43 % (cranial method), linear length deviation of 2.61 ± 0.47% (injection moulding) compared to 5.76 ± 0.79 % (cranial method), curve length deviation of 1.54 ± 0.77% (injection moulding) compared to 6.34 ± 0.99 % (cranial method) and surface curve angle deviation of 0.98 ± 0 % (injection moulding) compared to 15.45 ± 3.94 % (cranial method). From the data, it can be concluded that the injection moulding method is better suited than the cranial/intraoperative method and has good geometry accuracy, not significantly different from the direct 3D printing method. This research in laboratory experiments also shows great potential for the use of other substances in the form of liquids or pastes and the potential ease of obtaining different forms of implants as needed.
Keywords: cranial bone defects, cranioplasty, injection moulding, additive
manufacturing
... Rapid Prototype is highly promising advanced technology that has the potential to change fundamentally in some of the regions in medical science [2]. The process involves building of prototypes or functioning models in very short time, which can be used for certain design feature testing, analysis and verification of ideas [3]. Rapid Prototyping is very helpful in the field of medicine, as this technology can be used to directly fabricate model of various complex shaped anatomical parts directly from scanned data such as computerized tomography (CT) images. ...
... This pre-operating is necessary in difficult cases as it gives surgeons an opportunity to plan a complex procedure before actual performance. This also enables the surgeons to study the fracture configuration and design a proper implant according to bony anatomy [3]. The surgical planning is often done with help of SLA RP method because model will have high accuracy and surface finish [2]. ...
... The blood loss noted to be 600ml. The postoperative evaluation showed that accuracy and sizing of implant were fine and working successfully [3]. RP techniques were also applied to treat an 18 year old male with an injury to right kneed and ankle. ...
