Laser-assisted manufacturing of 45S5 Bioglass-coated zirconia structured surfaces targeting medical implants: adhesive, wettability, mechanical, and bioactivity evaluation

Faria, D.; Henriques, Bruno; Souza, A.C.; Silva, Filipe; Carvalho, Ó.

doi:10.1007/s00170-021-08303-9

Cited by 2 publications

(2 citation statements)

References 83 publications

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“…Surface texture consisted of a square crosslinked pattern with 16 lines in each direction over the surface ( Figure 1 ). The texturing was performed in normal air and atmospheric pressure using the following laser parameters: power of 40% (2.4 W), a scan speed of 128 mm/s and three laser passages, based on previous works [ 26 , 27 , 28 ].…”

Section: Methodsmentioning

confidence: 99%

“…Surfac texture consisted of a square crosslinked pattern with 16 lines in each direction over th surface (Figure 1). The texturing was performed in normal air and atmospheric pressur using the following laser parameters: power of 40% (2.4 W), a scan speed of 128 mm/s and three laser passages, based on previous works [26][27][28]. Samples were then sintered in a high-temperature furnace (Zirkonofen 700, Zirkonzahn ® , Gais, Italy) in the air at 1500 • C for 2 h with a heating and cooling rate of 8 • C/min.…”

Section: Samples Processingmentioning

confidence: 99%

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Cell Biological and Antibacterial Evaluation of a New Approach to Zirconia Implant Surfaces Modified with MTA

Fernandes,

Silva,

Da Cruz

et al. 2024

Biomimetics

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Peri-implantitis continues to be one of the major reasons for implant failure. We propose a new approach to the incorporation of MTA into zirconia implant surfaces with Nd:YAG laser and investigate the biological and the microbiological responses of peri-implant cells. Discs of zirconia stabilized with yttria and titanium were produced according to the following four study groups: Nd:YAG laser-textured zirconia coated with MTA (Zr MTA), Nd:YAG laser-textured zirconia (Zr textured), polished zirconia discs, and polished titanium discs (Zr and Ti). Surface roughness was evaluated by contact profilometry. Human osteoblasts (hFOB), gingival fibroblasts (HGF hTERT) and S. oralis were cultured on discs. Cell adhesion and morphology, cell differentiation markers and bacterial growth were evaluated. Zr textured roughness was significantly higher than all other groups. SEM images reveal cellular adhesion at 1 day in all samples in both cell lines. Osteoblasts viability was lower in the Zr MTA group, unlike fibroblasts viability, which was shown to be higher in the Zr MTA group compared with the Zr textured group at 3 and 7 days. Osteocalcin and IL-8 secretion by osteoblasts were higher in Zr MTA. The Zr textured group showed higher IL-8 values released by fibroblasts. No differences in S. oralis CFUs were observed between groups. The present study suggests that zirconia implant surfaces coated with MTA induced fibroblast proliferation and osteoblast differentiation; however, they did not present antibacterial properties.

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Section: Methodsmentioning

confidence: 99%

Section: Samples Processingmentioning

confidence: 99%

Cell Biological and Antibacterial Evaluation of a New Approach to Zirconia Implant Surfaces Modified with MTA

Fernandes,

Silva,

Da Cruz

et al. 2024

Biomimetics

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Fabrication of Multiscale and Periodically Structured Zirconia Surfaces Using Direct Laser Interference Patterning

Henriques,

Fabris,

Voisiat

et al. 2024

Adv Funct Materials

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The functionalization of zirconia surfaces by accurate and fast printing of periodical patterns embedding sub‐micrometric features is of great interest to many engineering fields and is yet to be explored. This study aims to assess the influence of the Direct Laser Interference Patterning processing parameters on the morphology and microstructure of zirconia surfaces using a 532 nm 10 ps‐pulsed laser source. Well‐defined linear structures with a period of 3 µm are successfully produced. Depending on the laser parameters, the structures are developed at or below the surface level, with higher depths (≈1 µm) being seen for increasing values of laser fluence and pulse overlap. Line‐like hierarchical structures with smaller interference spatial structures (3 µm period) and higher secondary structures with different periods (18, 15, and 12 µm) and heights (7, 5, and 3 µm, respectively) are also obtained on zirconia surface. Ablated regions presented few traces of molten material, nano‐droplets, and sub‐micrometric (<1 µm) pores, while no (sub) micrometric cracks are detected. A slight amount of tetragonal to monoclinic phase transformation (≈5%) is detected by X‐ray diffractometry. A processability map for ps‐laser processing of zirconia is proposed based on the experimental data.

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Laser-assisted manufacturing of 45S5 Bioglass-coated zirconia structured surfaces targeting medical implants: adhesive, wettability, mechanical, and bioactivity evaluation

Cited by 2 publications

References 83 publications

Cell Biological and Antibacterial Evaluation of a New Approach to Zirconia Implant Surfaces Modified with MTA

Cell Biological and Antibacterial Evaluation of a New Approach to Zirconia Implant Surfaces Modified with MTA

Fabrication of Multiscale and Periodically Structured Zirconia Surfaces Using Direct Laser Interference Patterning

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