The scientific online magazine Materials has published an article on Mar 25th 2020 named “Stereolithographic Additive Manufacturing of High Precision Glass Ceramic Parts”.
The authors are Julia Anna Schönherr *, Sonja Baumgartner, Malte Hartmann and Jürgen Stampfl
Location:Christian Doppler Laboratory for Photopolymers in Digital and Restorative Dentistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria; sonja.baumgartner@tuwien.ac.at (S.B.); malte.hartmann@tuwien.ac.at (M.H.); juergen.stampfl@tuwien.ac.at (J.S.)
* Correspondence: julia-anna.schoenherr@tuwien.ac.at; Tel.: +43-1-58801-30859
The Abstract:
“Lithography based additive manufacturing (AM) is one of the most established and widely used 3D-printing processes. It has enabled the processing of many different materials from thermoplast-like polymers to ceramics that have outstanding feature resolutions and surface quality, with comparable properties of traditional materials. This work focuses on the processing of glass ceramics, which have high optical demands, precision and mechanical properties specifically suitable for dental replacements, such as crowns. Lithography-based ceramic manufacturing (LCM) has been chosen as the optimal manufacturing process where a light source with a defined wavelength is used to cure and structure ceramic filled photosensitive resins. In the case of glass ceramic powders, plastic flow during thermal processing might reduce the precision, as well as the commonly observed sintering shrinkage associated with the utilized temperature program. To reduce this problem, particular sinter structures have been developed to optimize the precision of 3D-printed glass ceramic crowns. To evaluate the precision of the final part, testing using digitizing methods from optical to tactile systems were utilized with the best results were obtained from micro computed tomography (CT) scanning. These methods resulted in an optimized process allowing for possible production of high precision molar crowns with dimensional accuracy and high reproducibility.”
To download the full article click materials-13-01492.
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Material, Stereolithographic Additive Manufacturing of High Precision Glass Ceramic Parts https://www.google.com/url?rct=j&sa=t&url=https://www.mdpi.com/1996-1944/13/7/1492/pdf&ct=ga&cd=CAEYASoTODY5OTc5NDMxODY0NDE3MTExNjIZNzlmNGE2NTM3NzYyZDJjYzpwdDplbjpQVA&usg=AFQjCNGUdKw98gsQpGg-E6tMSA336RNAOQ re-edited and published by João Andrade on Mar31 2020;
Featured Image & Article Photo:
Lisa McDonald, The American Ceramic Society 3D-printed glass: Where are we now? https://ceramics.org/ceramic-tech-today/glass-1/3d-printed-glass-where-are-we-nowpublished on Mar26 2017, re-published by João Andrade on Mar31 2020;
