Development of Multi-Material DLP 3D Printer

Park, Se Won; Jung, Minwoo; Son, Yong-Un; Kang, Tae‐Young; Lee, Chibum

doi:10.7735/ksmte.2017.26.1.100

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…There are currently newer SLA printers as well as other technologies such as digital light processing (DLP), light‐emitting diodes (LED), liquid crystal display (LCD), and digital light synthesis . This work may not be directly applicable to the other printers . For instance, a recent study comparing SLA and DLP 3D printers for the fabrication of implant surgical guides showed that the DLP printer produces a more accurate implant guide than the SLA printer .…”

Section: Discussionmentioning

confidence: 99%

Intaglio Surface Dimension and Guide Tube Deviations of Implant Surgical Guides Influenced by Printing Layer Thickness and Angulation Setting

Dalal

Ammoun

Abdulmajeed

et al. 2020

Journal of Prosthodontics

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Purpose:To measure overall intaglio dimensional and tube deviations of implant guides printed at 50 and 100 µm layer thickness at 0°, 45°, and 90°angulation using a stereolithographic (SLA) printer. Materials and Methods: A surgical implant guide design from a subject missing a maxillary right central incisor, used as the original standard tessellation language (STL) were stereolithographically fabricated at each thickness and angulation, 50 and 100 µm layer thickness at 0°, 45°, and 90°angulation (n = 10 each group). The guide was then scanned using cone beam computed tomography. The digital imaging and communications in medicine (DICOM) scanned files were then converted to an STL format. The overall dimensional deviations of the intaglio surface and the positioning of the implant guide tube were then superimposed onto the original designed STL file using best-fitting alignment. A t-test and an F-test as well as ANOVA followed by a post hoc t-test were used to determine statistical significant differences (α = 0.05) for the intaglio surface and guide tube deviation, respectively. Results: The overall intaglio surface discrepancies (µm) printed at 0°, 45°, and 90°w ere 55.07 ± 1.36, 52.39 ± 2.09, and 61.02 ± 15.96 for 50 µm layer; and 98.38 ± 10.55, 84.47 ± 10.61, and 90.26 ± 5 for 100 µm layer with statistically significant differences for both t-test and F-test, p < 0.001. The maximal guide tube linear deviations (µm) printed at 0°, 45°, and 90°were 10.78 ± 3.84, 8.16 ± 3.68, and 12.57 ± 5.39 for 50 µm layer (ANOVA, p = 0.096); and 10.95 ± 5.23, 16.79 ± 4.97, and 22.63 ± 2.81 for 100 µm layer (ANOVA, p < 0.001). The maximal guide tube angular deviations (°) printed at 0°, 45°, and 90°were 1.29 ± 0.30, 0.64 ± 0.13, and 0.56 ± 0.21 for 50 µm layer (ANOVA, p < 0.001); and 1.57 ± 0.29, 0.86 ± 0.14, and 1.02 ± 0.31 for 100 µm layer (ANOVA, p = 0.034). There was a statistical difference in the deviations between 50 and 100 µm layer printing in all printed angulations except at 0°(t-test, p = 0.05, p = 0.03, and p = 0.001 for 0°, 45°, and 90°) and linear deviations (t-test, p < 0.001, p = 0.009, and p = 0.001 for 0°, 45°, and 90°). Conclusion: Printing at 50 µm layer reduces dimensional intaglio deviations in general and reduces tube angular deviations with different angulations of printing. However, the deviations were only ß60 to 100 µm for the intaglio dimension deviations; and ß0.04 to 0.26 mm and ß0.25°to ß2°for tube deviations.Guided implant surgery promises accurate placement of dental implants to ensure optimal esthetics and function of definitive restorations and longevity of osseointegrated implants. 1,2 Advancements in cone-beam computed tomography (CBCT) and computer-aided implant treatment planning simplify implant treatment planning and implant guide design. 3,4 Recent introduction of desktop 3D printing allows clinicians to fabricate implant surgical guides for guided implant surgery in office.

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Section: Discussionmentioning

confidence: 99%

Intaglio Surface Dimension and Guide Tube Deviations of Implant Surgical Guides Influenced by Printing Layer Thickness and Angulation Setting

Dalal

Ammoun

Abdulmajeed

et al. 2020

Journal of Prosthodontics

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“…Addition of other materials to subsequent layers would require changing the resin in the tank or tank replacement and, possibly, intermediate post-treatment/cleaning of the partial build. The automation of this process significantly increases the complexity of setup and printing duration but nevertheless can be implemented 152 .…”

Section: Characteristics Of Useful 3d Printed Materialsmentioning

confidence: 99%

Evolution of 3D Printing Methods and Materials for Electrochemical Energy Storage

et al. 2020

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Additive manufacturing has revolutionized the building of materials, and 3D‐printing has become a useful tool for complex electrode assembly for batteries and supercapacitors. The field initially grew from extrusion‐based methods and quickly evolved to photopolymerization printing, while supercapacitor technologies less sensitive to solvents more often involved material jetting processes. The need to develop higher‐resolution multimaterial printers is borne out in the performance data of recent 3D printed electrochemical energy storage devices. Underpinning every part of a 3D‐printable battery are the printing method and the feed material. These influence material purity, printing fidelity, accuracy, complexity, and the ability to form conductive, ceramic, or solvent‐stable materials. The future of 3D‐printable batteries and electrochemical energy storage devices is reliant on materials and printing methods that are co‐operatively informed by device design. Herein, the material and method requirements in 3D‐printable batteries and supercapacitors are addressed and requirements for the future of the field are outlined by linking existing performance limitations to requirements for printable energy‐storage materials, casings, and direct printing of electrodes and electrolytes. A guide to materials and printing method choice best suited for alternative‐form‐factor energy‐storage devices to be designed and integrated into the devices they power is thus provided.

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“…9 b). Recent developments in light-based multimaterial printing approaches should enable the manufacturing of structures with more elaborate porosity gradients 36 – 38 .…”

mentioning

confidence: 99%

Hierarchical porous materials made by stereolithographic printing of photo-curable emulsions

Kleger

Minas

Bosshard

et al. 2021

Sci Rep

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Porous materials are relevant for a broad range of technologies from catalysis and filtration, to tissue engineering and lightweight structures. Controlling the porosity of these materials over multiple length scales often leads to enticing new functionalities and higher efficiency but has been limited by manufacturing challenges and the poor understanding of the properties of hierarchical structures. Here, we report an experimental platform for the design and manufacturing of hierarchical porous materials via the stereolithographic printing of stable photo-curable Pickering emulsions. In the printing process, the micron-sized droplets of the emulsified resins work as soft templates for the incorporation of microscale porosity within sequentially photo-polymerized layers. The light patterns used to polymerize each layer on the building stage further generate controlled pores with bespoke three-dimensional geometries at the millimetre scale. Using this combined fabrication approach, we create architectured lattices with mechanical properties tuneable over several orders of magnitude and large complex-shaped inorganic objects with unprecedented porous designs.

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Development of Multi-Material DLP 3D Printer

Cited by 7 publications

References 4 publications

Intaglio Surface Dimension and Guide Tube Deviations of Implant Surgical Guides Influenced by Printing Layer Thickness and Angulation Setting

Intaglio Surface Dimension and Guide Tube Deviations of Implant Surgical Guides Influenced by Printing Layer Thickness and Angulation Setting

Evolution of 3D Printing Methods and Materials for Electrochemical Energy Storage

Hierarchical porous materials made by stereolithographic printing of photo-curable emulsions

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