Evaluation of Cure Depth and Geometrical Overgrowth Depending on Zirconia Volume Fraction Using Digital Light Processing

Jang, Kyoung-Jun; Kang, Jin Ho; Sakthiabirami, Kumaresan; Lim, Hyun-Pil; Yun, Kwi-Dug; Yim, Eun-Kyung; Oh, Gye-Jeong; Yang, Hyun-Sam; Lee, Kyung-Ku; Park, Sang-Won

doi:10.1166/jnn.2019.15971

Cited by 15 publications

(5 citation statements)

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“…The reduction of carbon is related to the cleaning effect of the organic substance left on the surface of the specimen due to plasma treatment. [1] The increase of oxygen can be attributed to surface modified by connecting a large number of oxygenbonded functional groups (Ti-O and O-H) to the surface of substrate. [14] At the same time, the generation of more Ti-O (or TiO 2 ) groups arise from the increase of Ti 2p.…”

Section: Resultsmentioning

confidence: 99%

“…Ti and its alloys are frequently applied in dental implants, [1,2] orthopedic applications, [3] and aerospace industries [4,5] due to their integrating excellent mechanical strength, [6,7] corrosion resistance, [8] and biocompatibility. [6,9] However, the hydrophilicity of Ti surface is not satisfactory, leading to poor bonding interface strength, [5,10] which makes titanium workpieces hard to join together.…”

Section: Introductionmentioning

confidence: 99%

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Efficient hydrophilicity improvement of titanium surface by plasma jet in micro-hollow cathode discharge geometry

et al. 2023

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The surface hydrophilicity improvement of titanium (Ti) has significant implications to the applications of the important biomaterial. In this paper, efficient hydrophilicity improvement is realized on the Ti surface by an air plasma jet in a micro- hollow cathode discharge (MHCD) geometry. Elementary discharge aspects of the plasma jet and surface characteristics of the Ti surface have been investigated with varying dissipated power (P d ). Results show that the plasma jet operates in a pulsed mode or a continuous mode depending on P d . The plume length increases with increasing P d and air flow rate. By optical emission spectroscopy, plasma parameters are investigated as functions of P d . After plasma treatment, water contact angel (WCA) of the Ti sample decreases until it reaches a minimum of 15° with increasing P d . In addition, surface topography, roughness, and content of chemical compositions are investigated by scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS) with increasing P d . It is revealed that Ti-O bond and O-H group on the Ti surface are favorable for the improvement of Ti surface hydrophilicity.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient hydrophilicity improvement of titanium surface by plasma jet in micro-hollow cathode discharge geometry

et al. 2023

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“…The major challenges of 3D printed dental prostheses for real clinical applications are surface finishing/topography, staircase effects, geometrical overgrowth, and mechanical properties. Specifically, the marginal tolerance requirement (< 0.1 mm) for dental prosthetic applications via AM-based techniques is hard to realize, particularly when material strength and density are also mandatory [54,140].…”

Section: Clinical Challengesmentioning

confidence: 99%

Perspective Chapter: Additive Manufactured Zirconia-Based Bio-Ceramics for Biomedical Applications

Sakthiabirami¹,

Vaiyapuri²,

Kang³

et al. 2022

Advanced Additive Manufacturing

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Zirconia was established as one of the chief vital ceramic materials for its superior mechanical permanency and biocompatibility, which make it a popular material for dental and orthopedic applications. This has inspired biomedical engineers to exploit zirconia-based bioceramics for dental restorations and repair of load-bearing bone defects caused by cancer, arthritis, and trauma. Additive manufacturing (AM) is being promoted as a possible technique for mimicking the complex architecture of human tissues, and advancements reported in the recent past make it a suitable choice for clinical applications. AM is a bottom-up approach that can offer a high resolution to 3D printed zirconia-based bioceramics for implants, prostheses, and scaffold manufacturing. Substantial research has been initiated worldwide on a large scale for reformatting and optimizing zirconia bioceramics for biomedical applications to maximize the clinical potential of AM. This book chapter provides a comprehensive summary of zirconia-based bioceramics using AM techniques for biomedical applications and highlights the challenges related to AM of zirconia.

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“…Moreover, the proportion of air gaps caused by the debinding of zirconia samples during sintering was found to decrease and then remain constant. If the air gaps were not constant, micro-cracks were more likely to occur due to external forces that may degrade strength, hardness, and physical properties [33,38]. If zirconia-based prostheses are applied in actual dental clinical practice, the foregoing can increase the possibility of prosthesis breakage caused by the masticatory force of patients.…”

Section: Microstructure Evaluationmentioning

confidence: 99%

“…In this study, the zirconia suspensions with a volume fraction of 52-56% without added silane were set as the control group [33], whereas those with the coupling agent were set as the experimental groups. The groups were prepared to compare the physical properties of zirconia specimens after sintering based on the incorporation or absence of a silane coupling agent.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Physical Properties of Zirconia Suspension with Added Silane Coupling Agent for Additive Manufacturing Processes

et al. 2022

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In this study, we have analysed the effects of a silane coupling agent on the volume fraction of zirconia for digital light processing (DLP)-based additive manufacturing processes. Zirconia suspension was prepared by the incorporation of silane-modified zirconia particles (experimental group) or untreated zirconia particles (control group). Furthermore, the control and experimental group were subdivided into three groups based on the volume fraction (52, 54, and 56 vol%) of zirconia particles. The disk-shaped zirconia samples were 3D (three-dimensional) printed using the DLP technique and their physical and mechanical properties were evaluated. The addition of a silane coupling agent to the zirconia samples was found to have influence of about 6% on the hardness and biaxial flexural strength. Moreover, the decrease in minute air gaps inside the zirconia layers significantly increased the material density (visualized from the microstructure analysis). Thus, from this study, it was established that the silane-modified zirconia particles had a positive effect on the physical properties of the zirconia parts.

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Evaluation of Cure Depth and Geometrical Overgrowth Depending on Zirconia Volume Fraction Using Digital Light Processing

Cited by 15 publications

References 0 publications

Efficient hydrophilicity improvement of titanium surface by plasma jet in micro-hollow cathode discharge geometry

Efficient hydrophilicity improvement of titanium surface by plasma jet in micro-hollow cathode discharge geometry

Perspective Chapter: Additive Manufactured Zirconia-Based Bio-Ceramics for Biomedical Applications

Evaluation of Physical Properties of Zirconia Suspension with Added Silane Coupling Agent for Additive Manufacturing Processes

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