Polymer infiltrated ceramic networks with biocompatible adhesive and 3D-printed highly porous scaffolds

Hodásová, Ľudmila; Sans, Jordi; Molina, Brenda G.; Alemán, Carlos; Llanes, L.; Fargas, Gemma; Armelín, Elaine

doi:10.1016/j.addma.2021.101850

Cited by 14 publications

(27 citation statements)

References 68 publications

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“…In the same micrograph, inter-particle voids left by the hydrogel degradation can be also visualized. The porosity of such dense filaments was determined by gas displacement pycnometry in a previous work by the authors, being very low (3%) [ 27 ]. Thus, such microporosity is not presumed to affect the copolymer infiltration of macropores, strategically created to reinforce the 3Y-TZP zirconia scaffolds.…”

Section: Resultsmentioning

confidence: 99%

“…The authors of this study have previously demonstrated that 3D-printed zirconia with 50% zirconia infill and PICN (3D-printed zirconia 50% infill, reinforced with Bis-GMA/TEGDMA copolymer) exhibit different mechanical resistance to compression forces [ 27 ]. In this work, the reasons for such distinct behavior have been elucidated by recording the deformation of filaments in real time during compression tests, using an infrared camera.…”

Section: Resultsmentioning

confidence: 99%

“…The detailed procedure for scaffold fabrication was as recently reported elsewhere [ 27 ]. In brief, 3Y-TZP powder (70 wt.…”

Section: Methodsmentioning

confidence: 99%

“…While advancements in 3D-printing technology have increased the effectiveness of dental prototype fabrication, the desired final property of the material itself is still the key aspect setting the limitations of the fabrication process. Fortunately, the authors of this study were recently able to create—following a robocasting route—a new polymer-infiltrated ceramic network (PICN) with 50% infill of solid yttria-stabilized tetragonal zirconia (3Y-TZP) filaments and 50% of macropores filled with methacrylate polymer, in a cubic geometry [ 27 ]. The work demonstrated that different architectures can be explored, combining the robocasting process and the direct interfacing of biocompatible polymer adhesives inside ceramic dental implants.…”

Section: Introductionmentioning

confidence: 99%

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3D-Printed Polymer-Infiltrated Ceramic Network with Biocompatible Adhesive to Potentiate Dental Implant Applications

et al. 2021

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The aim of this work was to prepare and characterize polymer–ceramic composite material for dental applications, which must resist fracture and wear under extreme forces. It must also be compatible with the hostile environment of the oral cavity. The most common restorative and biocompatible copolymer, 2,2-bis(p-(2′-2-hydroxy-3′-methacryloxypropoxy)phenyl)propane and triethyleneglycol dimethacrylate, was combined with 3D-printed yttria-stabilized tetragonal zirconia scaffolds with a 50% infill. The proper scaffold deposition and morphology of samples with 50% zirconia infill were studied by means of X-ray computed microtomography and scanning electron microscopy. Samples that were infiltrated with copolymer were observed under compression stress, and the structure’s failure was recorded using an Infrared Vic 2DTM camera, in comparison with empty scaffolds. The biocompatibility of the composite material was ascertained with an MG-63 cell viability assay. The microtomography proves the homogeneous distribution of pores throughout the whole sample, whereas the presence of the biocompatible copolymer among the ceramic filaments, referred to as a polymer-infiltrated ceramic network (PICN), results in a safety “damper”, preventing crack propagation and securing the desired material flexibility, as observed by an infrared camera in real time. The study represents a challenge for future dental implant applications, demonstrating that it is possible to combine the fast robocasting of ceramic paste and covalent bonding of polymer adhesive for hybrid material stabilization.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The detailed procedure for scaffold fabrication was as recently reported elsewhere [ 27 ]. In brief, 3Y-TZP powder (70 wt.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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3D-Printed Polymer-Infiltrated Ceramic Network with Biocompatible Adhesive to Potentiate Dental Implant Applications

et al. 2021

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“…The use of similar formulations with comparable relations between various properties has already been applied to 3D printing technologies. A study by Hodasova et al has shown the performance of BisGMA:TEGDMA (4:6) formulations for infiltration of 3D-printed zirconia (3Y-TZP) networks [54]. Based on rapidly advancing additive manufacturing technologies, the importance of selecting appropriate resin formulations with specific properties for, e.g., simultaneous and multi-material printing techniques further increases.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Heat-Polymerized Monomer Formulations for Dental Infiltrated Ceramic Networks

2021

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(1) Objectives: This work examined properties of dental monomer formulations of an aromatic dimethacylate (BisGMA), aliphatic urethane dimethacrylate (UDMA), and triethylene glycol dimethacrylate (TEGDMA). The monomers were combined in different ratio formulations and heat-polymerized containing the initiator benzoyl peroxide (BPO) specifically for the purpose of infiltration into polymer-infiltrated composite structures. (2) Methods: The monomers were combined in different weight ratios and underwent rheological analysis (viscosity and temperature dependence), degree of conversion, and mechanical properties (elastic modulus, hardness, fracture toughness). (3) Results: Rheological properties showed Newtonian behavior for monomers with a large dependence on temperature. The addition of BPO allowed for gelation in the range of 72.0–75.9 °C. Degree of conversion was found between 74% and 87% DC, unaffected by an increase of TEGDMA (up to 70 wt%). Elastic modulus, hardness, and fracture toughness were inversely proportional to an increase in TEGDMA. Elastic modulus and hardness were found slightly increased for UDMA versus BisGMA formulations, while fracture toughness ranged between 0.26 and 0.93 MPa·m0.5 for UDMA- and 0.18 and 0.68 MPa·m0.5 for BisGMA-based formulations. (4) Significance: Heat-polymerization allows for greater range of monomer formulations based on viscosity and degree of conversion when selecting for infiltrated composite structures. Therefore, selection should be based on mechanical properties. The measured data for fracture toughness combined with the reduced viscosity at higher UDMA:TEGDMA ratios favor such formulations over BisGMA:TEGDMA mixtures.

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Improving the Quality of Dental Services Based on Metal Additive Technologies: Unified Digital Workflow of Treatment

Radchenko,

Khoperskov

2023

Communications in Computer and Information Science

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Polymer infiltrated ceramic networks with biocompatible adhesive and 3D-printed highly porous scaffolds

Cited by 14 publications

References 68 publications

3D-Printed Polymer-Infiltrated Ceramic Network with Biocompatible Adhesive to Potentiate Dental Implant Applications

3D-Printed Polymer-Infiltrated Ceramic Network with Biocompatible Adhesive to Potentiate Dental Implant Applications

Characterization of Heat-Polymerized Monomer Formulations for Dental Infiltrated Ceramic Networks

Improving the Quality of Dental Services Based on Metal Additive Technologies: Unified Digital Workflow of Treatment

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