Next Article in Journal
A357 Alloy by LPBF for Industry Applications
Next Article in Special Issue
Development of Thermal Resistant FDM Printed Blends. The Preparation of GPET/PC Blends and Evaluation of Material Performance
Previous Article in Journal
Interaction of Different Charged Polymers with Potassium Ions and Their Effect on the Yield Stress of Highly Concentrated Glass Bead Suspensions
Previous Article in Special Issue
Additive Manufacturing: Alloy Design and Process Innovations
Article

Stereolithographic Additive Manufacturing of High Precision Glass Ceramic Parts

Christian Doppler Laboratory for Photopolymers in Digital and Restorative Dentistry, TU Wien, Getreidemarkt 9, 1060 Vienna, Austria
*
Author to whom correspondence should be addressed.
Materials 2020, 13(7), 1492; https://doi.org/10.3390/ma13071492
Received: 27 February 2020 / Revised: 19 March 2020 / Accepted: 23 March 2020 / Published: 25 March 2020
(This article belongs to the Special Issue Additive Manufacturing Materials and Their Applications)
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. View Full-Text
Keywords: biomedical engineering; additive manufacturing; stereolithography; micro CT; glass ceramic; dental replacement biomedical engineering; additive manufacturing; stereolithography; micro CT; glass ceramic; dental replacement
Show Figures

Figure 1

MDPI and ACS Style

Schönherr, J.A.; Baumgartner, S.; Hartmann, M.; Stampfl, J. Stereolithographic Additive Manufacturing of High Precision Glass Ceramic Parts. Materials 2020, 13, 1492. https://doi.org/10.3390/ma13071492

AMA Style

Schönherr JA, Baumgartner S, Hartmann M, Stampfl J. Stereolithographic Additive Manufacturing of High Precision Glass Ceramic Parts. Materials. 2020; 13(7):1492. https://doi.org/10.3390/ma13071492

Chicago/Turabian Style

Schönherr, Julia A., Sonja Baumgartner, Malte Hartmann, and Jürgen Stampfl. 2020. "Stereolithographic Additive Manufacturing of High Precision Glass Ceramic Parts" Materials 13, no. 7: 1492. https://doi.org/10.3390/ma13071492

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop