Simple Approach to Medical Grade Alumina and Zirconia Ceramics Surface Alteration via Acid Etching Treatment

Nakonieczny, Damian S.; Slíva, Aleš; Paszenda, Z.; Hundáková, Marianna; Kratošová, Gabriela; Holešová, Sylva; Majewska, Justyna; Kałużyński, Piotr; Sathish, Sajjan Kumar; Martynková, Gražyna Simha

doi:10.3390/cryst11101232

Cited by 13 publications

(9 citation statements)

References 48 publications

(58 reference statements)

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“…(1) cleaning of CSs from post-industrial pollution, (2) removal of damaged cenospheres, (3) screening of cenospheres on a vibrating tower to obtain the desired grain fractions, (4) chemical surface modification by etching in Piranha solution, (5) chemical surface modification by APTES, and (6) thermal treatment. The preparation of the cenospheres was carried out based on previous investigations with alumina and zirconia surface modification [34,35]. The cenospheres were first cleaned of biological residues and sediments from the lagoons in which they were stored.…”

Section: Cenospheres' Preparationmentioning

confidence: 99%

“…The filament was prepared using a method similar to the one described by us in our earlier work [35]. To prepare the feedstock, a twin-screw extruder was used for the compounding, while a single-screw extruder was used for the filament preparation.…”

Section: Filament Preparationmentioning

confidence: 99%

“…In this study, we comprehensively researched the preparation of raw CSs for surface modification by chemical methods for the preparation of a PA-12 composite for 3D printing by FDM. This work builds on our earlier experience [35,36]. Our main research motivation was to prepare a PCC for potential medical applications that is better than pure PA-12.…”

Section: Introductionmentioning

confidence: 98%

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Cenospheres-Reinforced PA-12 Composite: Preparation, Physicochemical Properties, and Soaking Tests

et al. 2022

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The main aim of this research was the preparation of a polymer–ceramic composite with PA-12 as the polymer matrix and modified aluminosilicate cenospheres (CSs) as the ceramic filler. The CSs were subjected to an early purification and cleaning process, which was also taken as a second objective. The CSs were surface modified by a two-step process: (1) etching in Piranha solution and (2) silanization in 3-aminopropyltriethoxysilane. The composite was made for 3D printing by FDM. Raw and modified CSs and a composite with PA-12 were subjected to the following tests: surface development including pores (BET), real density (HP), chemical composition and morphology (SEM/EDS, FTIR), grain analysis (PSD), phase composition (XRD), hardness (HV), and static tensile tests. The composites were subjected to soaking under simulated body fluid (SBF) conditions in artificial saliva for 14, 21, and 29 days. Compared to pure PA-12, PA-12_CS had generally better mechanical properties and was more resistant to SBF at elevated temperatures and soaking times. These results showed this material has potential for use in biomedical applications. These results also showed the necessity of developing a kinetic aging model for aging in different liquids to verify the true value of this material.

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Section: Cenospheres' Preparationmentioning

confidence: 99%

Section: Filament Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Cenospheres-Reinforced PA-12 Composite: Preparation, Physicochemical Properties, and Soaking Tests

et al. 2022

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“…The obtained results are part of a broader study on the modification of ceramic filler coatings dedicated to polymer-ceramic composites (PCC) and represent a continuation of our earlier work [40,41]. These fillers have potential applications as an input to PCCs and could be used in 3D printing for dentistry [41,42].…”

Section: Resultsmentioning

confidence: 53%

Alkali-Treated Alumina and Zirconia Powders Decorated with Hydroxyapatite for Prospective Biomedical Applications

et al. 2022

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The alumina and zirconia surfaces were pretreated with chemical etching using alkaline mixtures of ammonia, hydrogen peroxide and sodium hydroxide, and followed with application of the powder layer of Ca-deficient hydroxyapatite (CDH). The influence of etching bath conditions time and concentration on surface development, chemical composition and morphology of medicinal ceramic powders were studied. The following analyses were performed: morphology (scanning electron microscopy), phase composition (X-ray diffraction analysis), changes in binding interactions and chemical composition (FT-Infrared and Energy dispersive spectroscopies). Both types of etchants did not expose the original phase composition changes or newly created phases for both types of ceramics. Subsequent decoration of the surface with hydroxyapatite revealed differences in the morphological appearance of the layer on both ceramic surfaces. The treated zirconia surface accepted CDH as a flowing layer on the surface, while the alumina was decorated with individual CDH aggregates. The goal of this study was to focus further on the ceramic fillers for polymer-ceramic composites used as a biomaterial in dental prosthetics.

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“…Good bone repair materials should not only have a high mechanical strength but also have connected micropore structures similar to those of human bones. Related research results show that porous hydroxyapatite bone repair materials with suitable numbers and sizes of pores can provide growth space for osteoblasts and blood vessels and promote rapid bone growth [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Porous hydroxyapatite bone ceramics have good osteogenic induction properties and enhance the capacity for bone defect repair, which is more in line with the clinical requirements for biological bone repair materials.…”

Section: Introductionmentioning

confidence: 99%

3D Printing and Performance Study of Porous Artificial Bone Based on HA-ZrO2-PVA Composites

Bie¹,

Chen

Shan

et al. 2023

Materials

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An ideal artificial bone implant should have similar mechanical properties and biocompatibility to natural bone, as well as an internal structure that facilitates stomatal penetration. In this work, 3D printing was used to fabricate and investigate artificial bone composites based on HA-ZrO2-PVA. The composites were proportionally configured using zirconia (ZrO2), hydroxyapatite (HA) and polyvinyl alcohol (PVA), where the ZrO2 played a toughening role and PVA solution served as a binder. In order to obtain the optimal 3D printing process parameters for the composites, a theoretical model of the extrusion process of the composites was first established, followed by the optimization of various parameters including the spray head internal diameter, extrusion pressure, extrusion speed, and extrusion line width. The results showed that, at the optimum parameters of a spray head diameter of 0.2 mm, extrusion pressure values ranging from 1–3 bar, a line spacing of 0.8–1.5 mm, and a spray head displacement range of 8–10 mm/s, a better structure of biological bone scaffolds could be obtained. The mechanical tests performed on the scaffolds showed that the elastic modulus of the artificial bone scaffolds reached about 174 MPa, which fulfilled the biomechanical requirements of human bone. According to scanning electron microscope observation of the scaffold sample, the porosity of the scaffold sample was close to 65%, which can well promote the growth of chondrocytes and angiogenesis. In addition, c5.18 chondrocytes were used to verify the biocompatibility of the composite materials, and the cell proliferation was increased by 100% when compared with that of the control group. The results showed that the composite has good biocompatibility.

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Simple Approach to Medical Grade Alumina and Zirconia Ceramics Surface Alteration via Acid Etching Treatment

Cited by 13 publications

References 48 publications

Cenospheres-Reinforced PA-12 Composite: Preparation, Physicochemical Properties, and Soaking Tests

Cenospheres-Reinforced PA-12 Composite: Preparation, Physicochemical Properties, and Soaking Tests

Alkali-Treated Alumina and Zirconia Powders Decorated with Hydroxyapatite for Prospective Biomedical Applications

3D Printing and Performance Study of Porous Artificial Bone Based on HA-ZrO2-PVA Composites

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