On the suitability of photocuring-assisted DIW for manufacturing complex prosthesis from commercial dental composites

• Published in: Journal of materials science. Materials in medicine 2024-09, Vol.35 (1), p.59-11, Article 59
• Main Authors: Nogales, Florencia M., Borrero-López, Óscar, Pajares, Antonia, Miranda, Pedro
• Format: Article
• Language: English
• Subjects: 3-D printers; Acrylic Resins; Additive manufacturing; Biomaterials; Biomaterials Synthesis and Characterization; Biomedical Engineering and Bioengineering; Biomedical materials; Ceramics; Ceramics - chemistry; Chemistry and Materials Science; Composite materials; Composite Resins - chemistry; Composites; Deformation wear; Dental cement; Dental composites; Dental enamel; Dental materials; Dental Materials - chemistry; Dental Prosthesis; Dental Prosthesis Design; Dental restorative materials; Direct ink writing; Elastic deformation; Elastic Modulus; Elastic properties; Glass; Hardness; Humans; Load; Materials Science; Materials Testing; Mechanical properties; Modulus of elasticity; Natural Materials; Particulate composites; Photocuring; Plastic deformation; Polymer Sciences; Polymers; Polymers - chemistry; Polyurethanes; Printing; Printing, Three-Dimensional; Prostheses; Prosthetics; Regenerative Medicine/Tissue Engineering; Resins; Sliding contact; Slurries; Surface Properties; Surfaces and Interfaces; Thin Films; Three dimensional composites; Viscosity; Wear; Wear mechanisms; Wear resistance; Wear tests
• ISSN: 1573-4838; 0957-4530; 1573-4838
• DOI: 10.1007/s10856-024-06831-w

A 3-D printing method to produce dental prostheses of complex shapes from a commercial, photocurable resin-ceramic slurry is developed and optimized. The microstructure, mechanical properties and wear behavior of the resulting material are evaluated and compared with a conventional/control sample and other ceramic-polymer dental composites. Commercial resin-ceramic dental slurries can be successfully extruded and appropriately photocured in a low cost 3-D printing system to produce cost-efficient complex dental parts that could be used in indirect restorations. The printing process does not appreciably introduce defects in the material and the 3-D printed composites exhibit mechanical properties (hardness, elastic modulus) and wear resistance comparable to the control material and analogous, conventional dental composites. The main wear mechanisms under sliding contact against a hard antagonist are plastic deformation at the asperity level and ceramic particle pull-out due to filler/matrix interfacial weakness. Graphical Abstract 3-D printing commercial resin-filler slurries creates cost-efficient tooth prostheses with properties akin to conventional dental composites