3D Printing of multicolor dental products Fieldlab Multi-material 3D - PowerPoint PPT Presentation

Aug 22, 2022 •441 likes •660 views

3D Printing of multicolor dental products Fieldlab Multi-material 3D Printing INTRODUCTION 3D printing of dental crowns HOW IT WAS DONE Hand-made process for > 70 years ADVANCEMENT OF DIGITAL WORKFLOW IN DENTAL Building blocks for digital

3D Printing of multicolor dental products Fieldlab Multi-material 3D Printing
INTRODUCTION 3D printing of dental crowns
HOW IT WAS DONE Hand-made process for > 70 years
ADVANCEMENT OF DIGITAL WORKFLOW IN DENTAL Building blocks for digital production CADCAM in early stage was subtractive instead of additive Dentist CAD Implant Studio Dentist Dental Lab Lab Scanner Appliance Designer Orthodontist Ortho Lab Courtesy: 3DSystems Inc Ortho Analyzer 4
CURRENT STATUS 3D printing of permanent (mono-color) crowns & bridges
NEXT STEP: MULTICOLOR PRINTING Because mono-color crowns don’t have the ‘living’ look Project goal: 3D printing a realistic crown in 1 hour, meeting mechanical and biocompatibility requirements
MULTICOLOR CROWNS & BRIDGES Possible production methods
FIELDLAB MULTIMATERIAL 3D Technology approach Hybrid manufacturing: combine Vat Photo-polymerization & Jetting technology Vat Photopolymerization Inkjet technology • High resolution & surface quality • Possibility for multicolor • Biocompatible materials • Compatible with photopolymerization • Good mechanical properties
COMPLETE DIGITAL WORKFLOW Focus on all aspects Post Processing/ Scan Software Printer Material Curing
SOFTWARE & PRINT STRATEGY How to create the right color effects? • Starting point: Océ 2.5D Slicer used in fine art reproduction • Towards dental crowns: 3D voxel-based color to achieve natural looking tooth
SOFTWARE & PRINT STRATEGY Results – digital workflow
DEVELOPMENT OF SUITABLE INK E (MPa) UTS (MPa) 100 150 200 250 300 10 20 30 40 50 60 50 0 0 BI-OC14 B I - O C 1 GB-Tie10 G 4 B - T i e 1 GB-Tie20 G 0 B - T i e 2 0 GB-Tie30 G B - T i e 3 GB-Tie40 G 0 Average E-Modulus B - T i Average UTS e 4 0 GB-Tie50 G B - T i e 5 GB-IBO10 G 0 B - I B O 1 GB-IBO20 G 0 B - I B O 2 GB-IBO30 G 0 B - I B O 3 GB-IBO40 G 0 B - I B O 4 GB-IBO50 G 0 B - I B O 5 0
MULTIMATERIAL PRINTING Proof of concept
MULTIMATERIAL JETTING - RESULTS
EQUIPMENT DEVELOPMENT Combining vat photopolymerization & inkjet printing • Starting from TNO Lepus technology (SLA) • Added YZ stage for printhead • Added printhead control • Redesigned printjob software for modular approach
DESIGN OF CROWN DEMO PRODUCT Combining 3D geometry & color information Different shapes of red infill in each layer STL file for 3D geometry
3D PRINTED CROWN DEMO PRODUCT Target achieved!
ACKNOWLEDGEMENTS Guy Bex René van der Meer Connie Peterse – van der Koppel Fabien Bruning Kateryna Filippovych Anton Aulbers Felicia Ionascu
https://www.linkmagazine.nl/

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