scholarly journals Prediction of the layered ink layout for 3D printers considering a desired skin color and line spread function

2021 ◽  
Author(s):  
Kazuki Nagasawa ◽  
Junki Yoshii ◽  
Shoji Yamamoto ◽  
Wataru Arai ◽  
Satoshi Kaneko ◽  
...  
Keyword(s):  
Human Skin ◽  
Skin Color ◽  
Three Dimensional ◽  
Estimation Method ◽  
Three Dimensional Printing ◽  
Line Spread Function ◽  
Spread Function ◽  
3D Printers ◽  
Dimensional Printing ◽  
Line Spread

AbstractWe propose a layout estimation method for multi-layered ink using a measurement of the line spread function (LSF) and machine learning. The three-dimensional printing market for general consumers focuses on the reproduction of realistic appearance. In particular, for the reproduction of human skin, it is important to control translucency by adopting a multilayer structure. Traditionally, layer design has depended on the experience of designers. We, therefore, developed an efficient layout estimation to provide arbitrary skin color and translucency. In our method, we create multi-layered color patches of human skin and measure the LSF as a metric of translucency, and we employ a neural network trained with the data to estimate the layout. As an evaluation, we measured the LSF from the computer-graphics-created skin and fabricate skin using the estimated layout; evaluation with root-mean-square error showed that we can obtain color and translucency that are close to the target.

Three-Dimensional Printing of Ellipsoidal Structures Using Mercury

2017 ◽  
Author(s):  
Matthew Brown ◽  
Ken Van Wieren ◽  
Hamel N. Tailor ◽  
David Hartling ◽  
Anthony Jean ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Data File ◽  
Three Dimensional Printing ◽  
3 Dimensional ◽  
Main Paper ◽  
Scientific Papers ◽  
3D Printers ◽  
Anisotropic Displacement Parameters ◽  
Dimensional Printing ◽  
Dimensional Crystal

A description of how to use the Mercury software from the CCDC to print 3-dimensional crystal structures that depict the anisotropic displacement parameters, matching the commonly used ellipsoidal depiction used in scientific papers. Details on how to convert a cif file into a 3D printing data file is included in the main paper, and details on the preparation of that data file for printing on a number of different 3D printers is included in the ESI.<br>

Layout Estimation for Layered Ink of 3D Printer to Reproduce the Desired Line Spread Function of Skin using Simulated Data

2021 ◽  
Author(s):  
Kazuki Nagasawa ◽  
Kensuke Fukumoto ◽  
Wataru Arai ◽  
Kunio Hakkaku ◽  
Satoshi Kaneko ◽  
...  
Keyword(s):  
Neural Network ◽  
Deep Neural Network ◽  
Three Dimensional ◽  
Simulated Data ◽  
Training Data ◽  
Target Color ◽  
3D Printer ◽  
Line Spread Function ◽  
Spread Function ◽  
Line Spread

In this article, the authors propose a method to estimate the ink layer layout for a three-dimensional (3D) printer. This enables 3D printed skin to be produced with the desired translucency, which they represent as line spread function (LSF). A deep neural network in an encoder–decoder model is used for the estimation. It was previously reported that machine learning is an effective way to formulate the complex relationship between optical properties such as LSF and the ink layer layout in a 3D printer. However, although 3D printers are more widespread, the printing process is still time-consuming. Hence, it may be difficult to collect enough data to train a neural network sufficiently. Therefore, in this research, they prepare the training data, which is the correspondence between an LSF and the ink layer layout in a 3D printer, via computer simulation. They use a method to simulate the subsurface scattering of light for multilayered media. The deep neural network was trained with the simulated data and evaluated using a CG skin object. The result shows that their proposed method can estimate an appropriate ink layer layout that closely reproduces the target color and translucency.

scholarly journals A New Leap in Periodontics: Three-dimensional (3D) Printing

2017 ◽  
Vol 8 (1-2) ◽  
pp. 1-7
Author(s):  
Ruchir Patel ◽  
Tejal Sheth ◽  
Shilpi Shah ◽  
Mihir Shah
Keyword(s):  
3D Printing ◽  
Automobile Industry ◽  
Periodontal Regeneration ◽  
Three Dimensional ◽  
Smart Devices ◽  
Three Dimensional Printing ◽  
3D Printers ◽  
Manufacturing Applications ◽  
The Masses ◽  
Dimensional Printing

Dentistry is truly a great profession and recently it is coming to the terms of use of technology and tech-savvy dentists, who nowadays use smart devices to make their life easier. Researchers are constantly innovating to integrate techno-logy into dentistry. Of all the latest technological innovations in dentistry, the most talked about innovations are three-dimensional (3D) printing and cone beam computed tomography (CBCT), which have made the treatment planning and execution a whole lot easier. Three-dimensional printing like CBCT has been gaining much popularity in the masses. Three-dimensional printing technologies are evolving rapidly in the recent years and can be used with a wide array of different materials. In addition to rapid prototyping, the dominant use in the past, they are now being used in all manner of manufacturing applications in a diversity of industries such as sports goods, fashion items such as jewelry and necklaces to aerospace components, tools for automobile industry, and medical implants also in dentistry for producing models, making scaffolds, etc. In future, 3D printing has ability to change the way many products are manufactured and produced and bring an era of ‘personal manufacturing’. This article introduces 3D printing and gives little information about the technology behind the working of 3D printers. It also gives information about the applications of 3D printers and materials most often used for 3D printed scaffolds for periodontal regeneration.

scholarly journals Worldwide 3D Printers against the New Coronavirus

Prosthesis ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 87-90 ◽  
Author(s):  
Luca Fiorillo ◽  
Teresa Leanza
Keyword(s):  
Personal Protective Equipment ◽  
Three Dimensional ◽  
Protective Equipment ◽  
Healthcare Facilities ◽  
Three Dimensional Printing ◽  
Digital World ◽  
3D Printers ◽  
Low Costs ◽  
The Times ◽  
Dimensional Printing

The pandemic caused by the new coronavirus has placed national health systems of different countries in difficulty, and has demonstrated the need for many types of personal protective equipment (PPE). Thanks to the advent of new three-dimensional printing technologies, it was possible to share print files (using stereolithography (stl)) quickly and easily, improve them cooperatively, and allow anyone who possessed the materials, a suitable 3D printer and these files, to print. The possibility of being able to print three-dimensional supports, or complete personal protective equipment has been of incredible help in the management of COVID-19 (Coronavirus Disease 2019). The times and the relatively low costs have allowed a wide diffusion of these devices, especially for the structures that needed them, mainly healthcare facilities. 3D printing, now includes different fields of application, and represents, thanks to the evolution of methods and printers, an important step towards the “digital world”.

scholarly journals THREE-DIMENSIONAL PRINTING IN ORTHOPEDICS: WHERE WE STAND AND WHERE WE ARE HEADING

2021 ◽  
Vol 29 (4) ◽  
pp. 223-227
Author(s):  
LEANDRO EJNISMAN ◽  
CAMILO PARTEZANI HELITO ◽  
ANDRÉ FERRARI DE FRANÇA CAMARGO ◽  
BRUNO ARAGÃO ROCHA ◽  
ANDRÉ MATHIAS BAPTISTA ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Daily Practice ◽  
3D Models ◽  
Medical Field ◽  
Level Of Evidence ◽  
Three Dimensional Printing ◽  
Disruptive Technologies ◽  
Orthopedic Surgeons ◽  
3D Printers ◽  
Dimensional Printing

ABSTRACT Three-dimensional printing is a technology in expansion in the medical field. It also presents many applications in orthopedics. Our review article aims to describe 3D printing, types of 3D printers, and its use in the orthopedic field. 3D models can be created using tomography scans. Those models can then be manipulated, even simulating surgeries. It is possible to print biomodels, which will help us understand deformities and plan surgeries. Orthopedic surgeons must be updated in these disruptive technologies that may help their daily practice. Level of Evidence V, Expert opinion.

scholarly journals REVIEW OF CURRENT RESEARCH ON CHITOSAN AS A RAW MATERIAL IN THREE-DIMENSIONAL PRINTING TECHNOLOGY IN BIOMEDICAL APPLICATIONS

2020 ◽  
Vol XXV ◽  
pp. 37-50
Author(s):  
Szymon Mania ◽  
Adrianna Banach ◽  
Robert Tylingo
Keyword(s):  
Selective Laser Sintering ◽  
Three Dimensional ◽  
Raw Material ◽  
Fused Deposition Modelling ◽  
Digital Light Processing ◽  
Three Dimensional Printing ◽  
Fused Deposition ◽  
Potential Applications ◽  
3D Printers ◽  
Dimensional Printing

Three-dimensional (3D) biomaterial manufacturing strategies show an extraordinary driving force for the development of innovative solutions in the biomedical sector, including drug delivery systems, disease modelling and tissue and organ engineering. Due to its remarkable and promising biological and structural properties, chitosan has been widely studied for decades in several potential applications in the biomedical field. However, tools in the form of 3D printers have created new possibilities for the production of chitosan models, implants and scaffolds for cell cultures that are much more precise than existing ones. The article presents current achievements related to the possibility of using chitosan to create new materials for 3D printing in the form of chitosan bioinks, filaments, resins and powders dedicated for bioprinting, fused deposition modelling, stereolithography/digital light processing and selective laser sintering methods, respectively

scholarly journals A New Kind of Design

2009 ◽  
Vol 131 (01) ◽  
pp. 36-40 ◽  
Author(s):  
Jean Thilmany
Keyword(s):  
Processing Time ◽  
Three Dimensional ◽  
3D Models ◽  
Automated System ◽  
Labor Costs ◽  
Three Dimensional Printing ◽  
Thermoset Resin ◽  
Internet Users ◽  
3D Printers ◽  
Dimensional Printing

This article highlights three-dimensional printing as a rapid pro to typing process that builds objects by depositing a material such as thermoset resin in layers one on the other. Desktop 3D printers are now relatively inexpensive. Traditionally, printed models have been dipped in an epoxy resin. FigurePrints uses an automated system from xlaForm that allows parts to be infused in bulk in a heating machine. This method cuts processing time and labor costs, but is still time-consuming and allows processing only in batches. Wohlers is also watching Shapeways of Eindhoven in the Netherlands, which has married 3D printing with the crowdsourcing model now being blazed on the Internet. This model asks Internet users to design or create products and then rank the results. At Shapeways, which is actually a business incubator sponsored by Koninklijke Philips Electronics NV, consumers upload their own 3D models, which are then printed and shipped. Users can also purchase models.

A novel fast disintegrating tablet fabricated by three‐dimensional printing

2009 ◽  
Vol 00 (00) ◽  
pp. 090730035508060-7
Author(s):  
Deng-Guang Yu ◽  
Chris Branford-White ◽  
Yi-Cheng Yang ◽  
Li-Min Zhu ◽  
Edward William Welbeck ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Fast Disintegrating Tablet ◽  
Dimensional Printing

Central ossifying fibroma of mandible

2020 ◽  
Vol 13 (12) ◽  
pp. e239286
Author(s):  
Kumar Nilesh ◽  
Prashant Punde ◽  
Nitin Shivajirao Patil ◽  
Amol Gautam
Keyword(s):  
Fibrous Tissue ◽  
Three Dimensional ◽  
Facial Asymmetry ◽  
Ossifying Fibroma ◽  
Mandible Reconstruction ◽  
Three Dimensional Printing ◽  
Osseous Lesion ◽  
Large Size ◽  
Dimensional Printing

Ossifying fibroma (OF) is a rare, benign, fibro-osseous lesion of the jawbone characterised by replacement of the normal bone with fibrous tissue. The fibrous tissue shows varying amount of calcified structures resembling bone and/or cementum. The central variant of OF is rare, and shows predilection for mandible among the jawbone. Although it is classified as fibro-osseous lesion, it clinically behaves as a benign tumour and can grow to large size, causing bony swelling and facial asymmetry. This paper reports a case of large central OF of mandible in a 40-year-old male patient. The lesion was treated by segmental resection of mandible. Reconstruction of the surgical defect was done using avascular fibula bone graft. Role of three-dimensional printing of jaw and its benefits in surgical planning and reconstruction are also highlighted.

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