Wettability of ceramic surfaces -A wide range control of surface wettability from super hydrophilicity to super hydrophobicity, from static wettability to dynamic wettability

Watanabe, Toshiya

doi:10.2109/jcersj2.117.1285

Cited by 41 publications

(17 citation statements)

References 37 publications

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“…The more active behavior of Fe‐bioceramic implants was also marked by the increasing content of Fe and O on the degradation layer (Figure ), especially on the Fe‐BCP. The bioceramic‐Fe interface on the Fe grain boundaries may have facilitated fluid imbibition into the bulk because bioceramics are hydrophilic . Therefore the Fe‐bioceramic implants degraded from both external and internal attack.…”

Section: Discussionmentioning

confidence: 99%

“…The bioceramic-Fe interface on the Fe grain boundaries may have facilitated fluid imbibition into the bulk because bioceramics are hydrophilic. 49 Therefore the Fe-bioceramic implants degraded from both external and internal attack. The increasing degradation layer thickness of the Febioceramics (Table IV) correlates with the decreasing echogenicity pattern plotted along the implant length ( Figure 3).…”

Section: Implant Retrieval Analysismentioning

confidence: 99%

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Evidences ofin vivobioactivity of Fe‐bioceramic composites for temporary bone implants

et al. 2014

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Iron-bioceramic composites have been developed as biodegradable implant materials with tailored degradation behavior and bioactive features. In the current work, in vivo bioactivity of the composites was comprehensively studied by using sheep animal model. Five groups of specimens (Fe-HA, Fe-TCP, Fe-BCP composites, and pure-Fe and SS316L as controls) were surgically implanted into medio proximal region of the radial bones. Real-time ultrasound analysis showed a decreased echo pattern at the peri-implant biodegradation site of the composites indicating minimal tissue response during the wound healing process. Peripheral whole blood biomarkers monitoring showed a normal dynamic change of blood cellular responses and no stress effect was observed. Meanwhile, the released Fe ion concentration was increasing along the implantation period. Histological analysis showed that the composites corresponded with a lower inflammatory giant cell count than that of SS316L. Analysis of the retrieved implants showed a thicker degradation layer on the composites compared with pure-Fe. It can be concluded that the iron-bioceramic composites are bioactive and induce a preferable wound healing process.

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Section: Discussionmentioning

confidence: 99%

Section: Implant Retrieval Analysismentioning

confidence: 99%

Evidences ofin vivobioactivity of Fe‐bioceramic composites for temporary bone implants

et al. 2014

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“…, optical sessile-drop contact angle measurements) were devised for smooth samples and only provide a static and approximate evaluation for microrough, clinically-relevant surfaces [18, 19] (Fig. 1A).…”

Section: Introductionmentioning

confidence: 99%

The roles of titanium surface micro/nanotopography and wettability on the differential response of human osteoblast lineage cells

et al. 2013

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Surface micro and nanostructural modifications of dental and orthopaedic implants have shown promising in vitro, in vivo, and clinical results. Surface wettability has also been suggested to play an important role in osteoblast differentiation and osseointegration. However, the available techniques to measure surface wettability are not reliable on clinically-relevant, rough surfaces. Furthermore, how the differentiation state of osteoblast lineage cells impacts their response to micro/nanostructured surfaces, and the role of wettability on this response, remains unclear. In the current study, surface wettability analyses (optical sessile drop analysis, ESEM analysis, and the Wilhelmy technique) indicated hydrophobic static responses for deposited water droplets on microrough and micro/nanostructured specimens, while hydrophilic responses were observed with dynamic analyses of micro/nanostructured specimens. The maturation and local factor production of human immature osteoblast-like MG63 cells was synergistically influenced by nanostructures superimposed onto microrough titanium (Ti) surfaces. In contrast, human mesenchymal stem cells (MSCs) cultured on micro/nanostructured surfaces in the absence of exogenous soluble factors, exhibited less robust osteoblastic differentiation and local factor production compared to cultures on unmodified microroughened Ti. Our results support previous observations using Ti6Al4V surfaces showing that recognition of surface nanostructures and subsequent cell response is dependent on the differentiation state of osteoblast lineage cells. The results also indicate that this effect may be partly modulated by surface wettability. These findings support the conclusion that the successful osseointegration of an implant depends on contributions from osteoblast lineage cells at different stages of osteoblast commitment.

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“…It is known that BN powder is less hydrophilic than alumina powder [5,8]. This quality plays a role in the adhesion of particles with the polymeric matrix by affecting the bonding at the particle-matrix interface.…”

Section: Discussionmentioning

confidence: 99%

Modification of polyethylene properties by encapsulation of inorganic material

Vanga-Bouanga

Savoie

Fréchette

et al. 2014

IEEE Trans. Dielect. Electr. Insul.

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This study investigated the effect of various ceramic micro and nano fillers on the different properties (dielectric and thermal) of a polyethylene (PE) matrix. The fillers used were alumina (Al 2 O 3 ) and boron nitride (BN). The polymer composites were prepared by ball milling and thick films containing wt. 50% of the inorganic phase were pressed. The encapsulation of the inorganic additives into the PE matrix was successfully achieved. The real part of the dielectric permittivity of a microcomposite containing Al 2 O 3 was found to be close to that of the PE matrix value whereas the losses remained quite low. Thermal conductivity of PE was greatly improved: it increased by about 50% irrespective of the nature and size of the fillers. When the filler was nano BN, the breakdown strength was found to be slightly reduced by only 5%. This could be due to the size of the particles or to the high percentage of additives and the interface behavior of the fillers/matrix. Improvement of the PE surface resistance to discharges was achieved, specially with using nano-BN.

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Wettability of ceramic surfaces -A wide range control of surface wettability from super hydrophilicity to super hydrophobicity, from static wettability to dynamic wettability

Cited by 41 publications

References 37 publications

Evidences ofin vivobioactivity of Fe‐bioceramic composites for temporary bone implants

Evidences ofin vivobioactivity of Fe‐bioceramic composites for temporary bone implants

The roles of titanium surface micro/nanotopography and wettability on the differential response of human osteoblast lineage cells

Modification of polyethylene properties by encapsulation of inorganic material

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