scholarly journals A Case of an Extensive Keratocystic Odontogenic Tumor in the Mandible Reconstructed with a Custom-Made Total Joint Prosthesis

2018 ◽  
Vol 11 (2) ◽  
pp. 131-137
Author(s):  
Payam Farzad
Keyword(s):  
Computer Aided Design ◽  
Surgical Planning ◽  
Odontogenic Tumor ◽  
Keratocystic Odontogenic Tumor ◽  
Reconstruction Plate ◽  
Surgical Time ◽  
Custom Made ◽  
Computer Aided ◽  
Aided Design ◽  
Continuity Defects

The use of virtual surgical planning and computer-aided design/computer-aided manufacturing has previously been reported to enhance the planning for the reconstruction of mandibular continuity defects and to reduce surgical time. Reported is a case of a large keratocystic odontogenic tumor (KOT) affecting right hemimandible including the condylar neck. This case was initially reconstructed with a condyle-bearing reconstruction plate, but because of fatigue fracture 15 years later, a new reconstruction with a custom-made total joint temporomandibular prosthesis was performed.

scholarly journals Mandibular Reconstruction Using a Custom-Made Titanium Prosthesis: A Case Report on the Use of Virtual Surgical Planning and Computer-Aided Design/Computer-Aided Manufacturing

2016 ◽  
Vol 9 (3) ◽  
pp. 246-250 ◽  
Author(s):  
Andrew Ow ◽  
Winston Tan ◽  
Lukasz Pienkowski
Keyword(s):  
Case Report ◽  
Computer Aided Design ◽  
Surgical Planning ◽  
Computer Aided Manufacturing ◽  
Virtual Surgical Planning ◽  
Custom Made ◽  
Computer Aided ◽  
Mandibular Defect ◽  
Aided Design ◽  
Continuity Defects

The use of virtual surgical planning and computer-aided design/computer-aided manufacturing has been reported to enhance the planning for the reconstruction of mandibular continuity defects. This case report illustrates the use of this technology in the fabrication of a custom-made titanium prosthesis to restore a segmental mandibular defect. The design specifications and sequence of the custom-made titanium prosthesis are discussed. Although successful in this case, there are limitations in its application and case selection is of vital importance.

scholarly journals Modern Surfboards and Their Structural Characterization: Towards an Engineering Approach

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 65
Author(s):  
Luca Oggiano ◽  
Marc in het Panhuis
Keyword(s):  
Computer Aided Design ◽  
Polyester Resin ◽  
Expanded Polystyrene ◽  
Torsional Stiffness ◽  
Hydrodynamic Properties ◽  
Longitudinal Stiffness ◽  
Custom Made ◽  
Computer Aided ◽  
Stiffness And Damping ◽  
Aided Design

Recently, manufactures who produce surfboards using computer aided design and robotic (CNC) shaping tools have gained a larger share of the surfing market, allowing board producers and shapers to produce lighter and more durable boards. The improvement in design and production process of surfboards has been directly linked with the adaption of technologies tested and validated in other industries. However, the surfing industry still lacks methodologies, standards and testing facilities to scientifically investigate and quantify the structural and hydrodynamic properties of surfboards. It is widely accepted that distributed rigidity, damping and stiffness in the three directions play a huge role in defining surfboard performance. These properties are rarely stated by producers and never measured. The present paper compares two boards with equal outline and geometric shape but built with two different technologies: one board built with a traditional high density polyurethane (PU) blank, polyester resin and a stringer to improve longitudinal stiffness and one board built with bio epoxy resin, expanded polystyrene (EPS) and two side inserts made of cork to improve longitudinal stiffness and damping. Different tests were carried out to compare the two boards and a testing methodology with the aim to evaluate board structural properties and identify key parameters that will influence the board performances. Accelerometers were used to characterize stiffness and damping while a custom-made flex machine was used to evaluate the torsional stiffness. Differences between the two boards are highlighted, leading to the fact that the two boards, even being identical in size, will behave differently in different wave conditions and for different surfers.

scholarly journals Computer-Assisted Mandibular Reconstruction using a Patient-Specific Reconstruction Plate Fabricated with Computer-Aided Design and Manufacturing Techniques

2014 ◽  
Vol 7 (2) ◽  
pp. 158-166 ◽  
Author(s):  
Frank Wilde ◽  
Carl-Peter Cornelius ◽  
Alexander Schramm
Keyword(s):  
Computer Aided Design ◽  
Mandibular Reconstruction ◽  
Patient Specific ◽  
Computer Assisted ◽  
Reconstruction Plate ◽  
Fibula Flap ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design ◽  
Five Axis

We investigated the workflow of computer-assisted mandibular reconstruction that was performed with a patient-specific mandibular reconstruction plate fabricated with computer-aided design and computer-aided manufacturing (CAD/CAM) techniques and a fibula flap. We assessed the feasibility of this technique from virtual planning to the completion of surgery. Computed tomography (CT) scans of a cadaveric skull and fibula were obtained for the virtual simulation of mandibular resection and reconstruction using ProPlan CMF software (Materialise®/DePuy Synthes®). The virtual model of the reconstructed mandible provided the basis for the computer-aided design of a patient-specific reconstruction plate that was milled from titanium using a five-axis milling machine and CAM techniques. CAD/CAM techniques were used for producing resection guides for mandibular resection and cutting guides for harvesting a fibula flap. Mandibular reconstruction was simulated in a cadaveric wet laboratory. No problems were encountered during the procedure. The plate was fixed accurately to the residual bone without difficulty. The fibula segments were attached to the plate rapidly and reliably. The fusion of preoperative and postoperative CT datasets demonstrated high reconstruction precision. Computer-assisted mandibular reconstruction with CAD/CAM-fabricated patient-specific reconstruction plates appears to be a promising approach for mandibular reconstruction. Clinical trials are required to determine whether these promising results can be translated into successful practice and what further developments are needed.

Rapid prototyping-assisted fabrication of the customized metatarsophalangeal joint implant (SamKu)

2014 ◽  
Vol 20 (4) ◽  
pp. 270-279 ◽  
Author(s):  
Sameer C. Raghatate ◽  
Abhaykumar M. Kuthe ◽  
Tushar R. Deshmukh ◽  
Sandeep W. Dahake
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Surgical Planning ◽  
Metatarsophalangeal Joint ◽  
Content Type ◽  
Advanced Technologies ◽  
Joint Implant ◽  
Computer Aided ◽  
Aided Design ◽  
Practical Implications

Purpose – The main purpose of this paper is to report the successful treatment modality for patients suffering from arthritis of the metatarsophalangeal joint (MTPJ) of the foot which otherwise could not be treated through traditional surgeries. Design/methodology/approach – The unique capabilities of the computer-aided design and the rapid prototyping (RP) technology are used to develop the customized MTPJ implant (SamKu). Findings – This approach shows good results in the fabrication of the MTPJ implant. Postoperatively, the patient experienced normalcy in the movement of the MTPJ of the foot. Practical implications – Advanced technologies made it possible to fabricate the customized MTPJ implant (SamKu). The advantage of this approach is that the physical RP model assisted in designing the final metallic implant. It also helped in the surgical planning and the rehearsals. Originality/value – This case report illustrates the benefits of imaging/computer-aided manufacturing/RP to develop the customized implant and serve those patients who could not be treated in the traditional way. This is a pioneered attempt toward implementation of a customized implant for patients suffering from arthritis of the MTPJ.

scholarly journals Prevention of Mandible Fractures in Medication-Related Osteonecrosis of the Jaws: The Role of Virtual Surgical Planning and Computer-Aided Design and Manufacturing in Two Clinical Case Reports

2021 ◽  
Vol 11 (17) ◽  
pp. 7894
Author(s):  
João André Correia ◽  
José Ricardo Ferreira ◽  
Miguel Amaral Nunes ◽  
António Capelo ◽  
Miguel de Araújo Nobre ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Surgical Planning ◽  
Necrotic Bone ◽  
Osteonecrosis Of The Jaws ◽  
Virtual Surgical Planning ◽  
Mandible Fracture ◽  
Computer Aided ◽  
Cad Cam ◽  
Mandible Fractures ◽  
Aided Design

Background: Marginal mandible resection is required to achieve healing in some cases of medication-related osteonecrosis of the jaws (MRONJ). Despite the sparsity of the literature, computer-aided design/computer-aided manufacturing (CAD/CAM) materials may provide superior outcomes for patients with an increased risk of mandible fracture. The aim of this study was to report a digital workflow for surgical interventions to prevent mandible fracture in MRONJ patients. Methods: We present two cases in which virtual surgical planning (VSP) and CAD/CAM surgical guides and reconstruction plates were used to prevent mandible fractures in elderly MRONJ patients submitted for marginal resection. Two osteoporotic patients, aged 73 and 84 years, presented with stage 3 MRONJ of the right mandibular body with inferior alveolar nerve involvement. The unaffected bone height was 6 mm in both cases, implying a high risk of mandible fracture. After preoperative VSP, surgery was performed through a combined intraoral–transbuccal approach. CAD/CAM-customized cutting guides and reconstruction plates were used for the marginal resection of necrotic bone and internal fixation. Results: Complete healing was achieved and the patients remained asymptomatic up to 1 year post-surgery. Conclusions: VSP and CAD/CAM-customized materials facilitated the complete resection of necrotic bone and rigid fixation in MRONJ patients, allowing a simplified approach with shorter operative times, reduced morbidity, and predictable results.

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