scholarly journals PEMAKAIAN MEDICAL RAPID PROTOTYPING UNTUK PREKONTUR PLAT REKONSTRUKSI PADA RESEKSI MANDIBULA

2017 ◽  
Vol 4 (2) ◽  
pp. 149
Author(s):  
Arya Kusuma Agraha ◽  
Masykur Rahmat ◽  
Rahardjo .
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Mandibular Reconstruction ◽  
Reconstruction Plate ◽  
Mandibular Bone ◽  
Accurate Picture ◽  
Computer Aided ◽  
Long Time ◽  
Cad Cam ◽  
Aided Design

Background: In the case of mandibular resection that leaves a large mandibular bone defect, a mandibular reconstruction is required to restore functional and postoperative aesthetic factors. Mandibular reconstruction plate installation on mandibular resection is very important but difcult to achieve maximum results. The formation of reconstruction plates can be preoperative and intraoperative. Preoperative stereolithography (medical rapid prototyping/MRP) can be used to form rapid and accurate plates (precontours). Objective: Report the use of MRP as an alternative tool to precontour mandibular reconstruction plate.Case management: Reported reconstruction of mandibular defects in one case of hemimandibulectomy and two cases of segmental resection with avascular iliac bone grafts using MRP through a computer-aided design and computer aided manufacture procedure (CAD/CAM) to establish preoperative reconstruction plates (precontour) so the surgery doesn’t take long time to reconstruct, by forming a mandibular models under normal circumstances.Result: The formation of a reconstruction plates (precontour) using MRP (medical rapid prototyping) with CAD / CAM procedure gives results in accordance with the original form.Conclusions: The making of MRP through CAD / CAM procedure gives maximal result resembling the form of mandibular model. The MRP models get an accurate picture of the patient’s jaw as a pre contour tools for reconstruction plate. The formation of the reconstruction plates (precontour) with these MRP model is obtained from CAD / CAM and provides a normal jaw image, so that preoperative precontouring will give good and maximum result on the reconstruction plates made under the MRP models.

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.

Enhancement of Design and Manufacturing Curriculum Through Rapid Prototyping Practices

2004 ◽  
Author(s):  
Ismail Fidan ◽  
Ken Patton
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Physical Models ◽  
Web Based ◽  
Capstone Courses ◽  
Computer Aided ◽  
Design And Manufacturing ◽  
Cad Cam ◽  
Industrial Projects ◽  
Aided Design

Advances in computer technology opened new horizons in teaching Computer Aided Design (CAD) and Computer Aided Manufacturing (CAM) technologies. This paper will report the outcomes of two current NSF grants, 0311586 and 0302314, funded on Rapid Prototyping (RP) curriculum development. The objective of these RP projects is to provide advanced instruction and laboratory practices in the areas of CAD/CAM/CAE through challenging laboratory assignments and industrial projects that are integrated into any engineering curriculum. These projects create web-based materials, and also adapt and implement RP experiences and educational practices following successful similar models at various engineering schools to enhance pedagogy in design and manufacturing curriculum. Enhanced RP capabilities enable the students to build physical models directly from CAD data, where the prototype communicates important information about parts, including engineering data such as fit and limited functional testing, labeling, highlighting, and appearance simulation. Developed RP labs are used in junior and senior level design and manufacturing courses, including the senior capstone courses.

scholarly journals The computer-aided design and rapid prototyping fabrication of removable partial denture frameworks

2005 ◽  
Vol 219 (3) ◽  
pp. 195-202 ◽  
Author(s):  
D Eggbeer ◽  
R Bibb ◽  
R Williams
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Software Analysis ◽  
Computer Aided ◽  
Cad Cam ◽  
Conventional Methods ◽  
Aided Design ◽  
Dental Cast

This study explores the application of computer-aided design and manufacture (CAD/CAM) to the process of electronically surveying a scanned dental cast as a prior stage to producing a sacrificial pattern for a removable partial denture (RPD) metal alloy framework. These are designed to retain artificial replacement teeth in the oral cavity. A cast produced from an impression of a patient's mouth was digitally scanned and the data converted to a three-dimensional computer file that could be read by the computer-aided design (CAD) software. Analysis and preparation were carried out in the digital environment according to established dental principles. The CAD software was then used to design the framework and generate a standard triangulation language (STL) file in preparation for its manufacture using rapid prototyping (RP) methods. Several RP methods were subsequently used to produce sacrificial patterns, which were then cast in a chromium-cobalt alloy using conventional methods and assessed for accuracy of fit. This work demonstrates that CAD/CAM techniques can be used for electronic dental cast analysis, preparation, and design of RPD frameworks. It also demonstrates that RP-produced patterns may be successfully cast using conventional methods and that the resulting frameworks can provide a satisfactory fit.

scholarly journals Evaluation of Different Materials Used for Fabrication of Complete Digital Denture

2018 ◽  
Vol 55 (1) ◽  
pp. 124-128 ◽  
Author(s):  
Claudia Florina Andreescu ◽  
Doina Lucia Ghergic ◽  
Oana Botoaca ◽  
Violeta Hancu ◽  
Andreea Mariana Banateanu ◽  
...  
Keyword(s):  
Rapid Prototyping ◽  
Polymethyl Methacrylate ◽  
Computer Aided Design ◽  
Complete Denture ◽  
Computer Aided Manufacturing ◽  
Computer Aided ◽  
Cad Cam ◽  
Materials Used ◽  
Aided Design ◽  
Digital Denture

Utilization of computer-aided design/computer-aided manufacturing (CAD/CAM) rapidly increases in dental medicine. Making of computer-engineered complete denture is based on scanning of patient data, designing of prosthesis and milling or rapid prototyping. This is digital denture, term that includes innovative devices, software programmes and corresponding materials. Industrially polymerized cross-linked polymethyl methacrylate (PMMA) is the material used for fabrication of digital denture. The aim of this study is to analyze the different cross-linked PMMA used for fabrication of CAD/CAM complete denture.

scholarly journals Data Transfer Between CAD System and RP System: A Report

2012 ◽  
Author(s):  
Syaimak Abd. Syukur ◽  
Masine Md Tap
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
3D Model ◽  
Data Transfer ◽  
Cad System ◽  
System A ◽  
Computer Aided ◽  
Cad Cam ◽  
Cad Models ◽  
Aided Design

Sistem Rapid Prototyping (RP) ialah teknologi yang menukar sesuatu reka bentuk yang dibina dalam Computer Aided Design (CAD) ke suatu komponen model 3D. Model CAD biasanya dibina dalam sistem CAD yang kemudiannya dihantar ke sistem RP. Antaramuka yang baik antara sistem CAD dan sistem RP adalah salah satu faktor penting dalam menghasilkan prototaip yang berkualiti tinggi. Kertas kerja ini melaporkan hasil uji kaji yang dijalankan untuk mengenal pasti masalah-masalah dalam memindahkan data antara satu sistem CAD (UNIGRAPHICS) dan satu sistem RP (QUICKSLICE). Berdasarkan hasil uji kaji dan analisis yang dijalankan, satu garis panduan dicadangkan untuk perpindahan data yang lebih berkesan antara sistem CAD (UNIGRAPHICS) dan sistem RP (QUICKSLICE). Kata kunci: CAD; CAM; CAD/CAM; Rapid Prototyping Rapid Prototyping (RP) is a technology that transform a design generated in Computer Aided Design (CAD) to a 3D model parts. CAD models are usually done on a CAD system and then transported into the RP system. A good interface between the CAD and the RP system is one of the key factors of producing a good quality prototype. This paper reports on the results of an experimentation carried out to identify the problems in transferring data between a CAD system (UNIGRAPHICS) and an RP system (QUICKSLICE). Based on the experimentation’s results and analysis, a basic guideline is proposed for a safer data transfer between the CAD system (UNIGRAPHICS) and an RP system (QUICKSLICE). Key words: CAD; CAM; CAD/CAM; Rapid Prototyping

Structural Analysis of Product and Computer-Aided Assembly Planning in AssemBL Software Package

2018 ◽  
pp. 11-33
Author(s):  
A. N. Bozhko
Keyword(s):  
Computer Aided Design ◽  
State Of The Art ◽  
Graph Model ◽  
Design System ◽  
Assembly Planning ◽  
Complex Products ◽  
Assembly Sequences ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design

Computer-aided design of assembly processes (Computer aided assembly planning, CAAP) of complex products is an important and urgent problem of state-of-the-art information technologies. Intensive research on CAAP has been underway since the 1980s. Meanwhile, specialized design systems were created to provide synthesis of assembly plans and product decompositions into assembly units. Such systems as ASPE, RAPID, XAP / 1, FLAPS, Archimedes, PRELEIDES, HAP, etc. can be given, as an example. These experimental developments did not get widespread use in industry, since they are based on the models of products with limited adequacy and require an expert’s active involvement in preparing initial information. The design tools for the state-of-the-art full-featured CAD/CAM systems (Siemens NX, Dassault CATIA and PTC Creo Elements / Pro), which are designed to provide CAAP, mainly take into account the geometric constraints that the design imposes on design solutions. These systems often synthesize technologically incorrect assembly sequences in which known technological heuristics are violated, for example orderliness in accuracy, consistency with the system of dimension chains, etc.An AssemBL software application package has been developed for a structured analysis of products and a synthesis of assembly plans and decompositions. The AssemBL uses a hyper-graph model of a product that correctly describes coherent and sequential assembly operations and processes. In terms of the hyper-graph model, an assembly operation is described as shrinkage of edge, an assembly plan is a sequence of shrinkages that converts a hyper-graph into the point, and a decomposition of product into assembly units is a hyper-graph partition into sub-graphs.The AssemBL solves the problem of minimizing the number of direct checks for geometric solvability when assembling complex products. This task is posed as a plus-sum two-person game of bicoloured brushing of an ordered set. In the paradigm of this model, the brushing operation is to check a certain structured fragment for solvability by collision detection methods. A rational brushing strategy minimizes the number of such checks.The package is integrated into the Siemens NX 10.0 computer-aided design system. This solution allowed us to combine specialized AssemBL tools with a developed toolkit of one of the most powerful and popular integrated CAD/CAM /CAE systems.

scholarly journals Evaluation of the Feasibility of NaCaPO4-Blended Zirconia as a New CAD/CAM Material for Dental Restoration

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3819
Author(s):  
Ting-Hsun Lan ◽  
Yu-Feng Chen ◽  
Yen-Yun Wang ◽  
Mitch M. C. Chou
Keyword(s):  
Computer Aided Design ◽  
Optical Microscope ◽  
Dental Restoration ◽  
Numerical Control ◽  
Test Results ◽  
Cnc Machine ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design ◽  
Better Than

The computer-aided design/computer-aided manufacturing (CAD/CAM) fabrication technique has become one of the hottest topics in the dental field. This technology can be applied to fixed partial dentures, removable dentures, and implant prostheses. This study aimed to evaluate the feasibility of NaCaPO4-blended zirconia as a new CAD/CAM material. Eleven different proportional samples of zirconia and NaCaPO4 (xZyN) were prepared and characterized by X-ray diffractometry (XRD) and Vickers microhardness, and the milling property of these new samples was tested via a digital optical microscope. After calcination at 950 °C for 4 h, XRD results showed that the intensity of tetragonal ZrO2 gradually decreased with an increase in the content of NaCaPO4. Furthermore, with the increase in NaCaPO4 content, the sintering became more obvious, which improved the densification of the sintered body and reduced its porosity. Specimens went through milling by a computer numerical control (CNC) machine, and the marginal integrity revealed that being sintered at 1350 °C was better than being sintered at 950 °C. Moreover, 7Z3N showed better marginal fit than that of 6Z4N among thirty-six samples when sintered at 1350 °C (p < 0.05). The milling test results revealed that 7Z3N could be a new CAD/CAM material for dental restoration use in the future.

scholarly journals Characterisation of the Filler Fraction in CAD/CAM Resin-Based Composites

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1986
Author(s):  
Andreas Koenig ◽  
Julius Schmidtke ◽  
Leonie Schmohl ◽  
Sibylle Schneider-Feyrer ◽  
Martin Rosentritt ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Point Of View ◽  
Specific Information ◽  
Dental Resin ◽  
X Ray ◽  
Computer Aided ◽  
Cad Cam ◽  
Filler Fraction ◽  
The Individual ◽  
Aided Design

The performance of dental resin-based composites (RBCs) heavily depends on the characteristic properties of the individual filler fraction. As specific information regarding the properties of the filler fraction is often missing, the current study aims to characterize the filler fractions of several contemporary computer-aided design/computer-aided manufacturing (CAD/CAM) RBCs from a material science point of view. The filler fractions of seven commercially available CAD/CAM RBCs featuring different translucency variants were analysed using Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS), Micro-X-ray Computed Tomography (µXCT), Thermogravimetric Analysis (TG) and X-ray Diffractometry (XRD). All CAD/CAM RBCs investigated included midifill hybrid type filler fractions, and the size of the individual particles was clearly larger than the individual specifications of the manufacturer. The fillers in Shofu Block HC featured a sphericity of ≈0.8, while it was <0.7 in all other RBCs. All RBCs featured only X-ray amorphous phases. However, in Lava Ultimate, zircon crystals with low crystallinity were detected. In some CAD/CAM RBCs, inhomogeneities (X-ray opaque fillers or pores) with a size <80 µm were identified, but the effects were minor in relation to the total volume (<0.01 vol.%). The characteristic parameters of the filler fraction in RBCs are essential for the interpretation of the individual material’s mechanical and optical properties.

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