A5011028717- Dental materials and restorations
- Dental Implant Techniques and Outcomes
- Bone Tissue Engineering Materials
- Advanced Nanomaterials in Catalysis
- Oral microbiology and periodontitis research
- Dental Research and COVID-19
- Additive Manufacturing and 3D Printing Technologies
- Endodontics and Root Canal Treatments
- Nanoplatforms for cancer theranostics
- Probiotics and Fermented Foods
- Dental Erosion and Treatment
- TiO2 Photocatalysis and Solar Cells
- Natural product bioactivities and synthesis
- Nanoparticles: synthesis and applications
- Dental Health and Care Utilization
- Bone Metabolism and Diseases
- Orthodontics and Dentofacial Orthopedics
- Medical and Biological Ozone Research
- Graphene and Nanomaterials Applications
- Advanced ceramic materials synthesis
- Fluoride Effects and Removal
- Laser-Ablation Synthesis of Nanoparticles
- Conducting polymers and applications
- Innovative concrete reinforcement materials
- Gold and Silver Nanoparticles Synthesis and Applications
Wonkwang University
2015-2025
Yonsei University Dental Hospital
2002
Titania and reduced graphene oxide (rGO) are well-known materials with excellent photocatalytic properties, but research on the photocatalytic-based antibacterial effects of their combination remains limited. This study explored suitability titania nanotubes (TiO2 NTs) combined rGO two terminal functional groups (nonfunctional aminated (NH2)) as efficient photocatalysts for antimicrobial applications under visible light irradiation. Field-emission scanning electron microscopy observations...
This study was aimed at preparing zirconia samples via additive manufacturing (AM) and subtractive (SM) testing the following aspects: (1) accuracy of (2) bond strength porcelain to evaluate applicability fabricated by AM in dental clinics. We used three milling machines for SM (AR, K5, UP) a 3D printer (AO). The specimen internal marginal areas evaluated superimposing techniques calculate root mean square (RMS) values. strengths prepared were measured using universal machine. RMS values...
The aim of this study was to evaluate the dynamic fatigue strengths at 105 cycles and strains particulate filler composite resins with without reinforcing fibers. An UHMWPE (Ribbond), a polyaromatic polyamide fiber (Fibreflex), three glass fibers (GlasSpan, FibreKor, Vectris Frame) were used reinforce resins. properties measured in three-point bending mode using servohydraulic universal testing machine frequency 5Hz, until failure occurred or had been completed. determined by staircase...
ABSTRACT Background: Customized zirconia abutments are increasingly applied for the fabrication of esthetic implant restorations aimed at imitating natural situation. These individually shaped according to anatomical needs respective site. Purpose: This study sought compare fracture resistance and fit accuracy prefabricated customized using an internal hexagonal system (TSV®, Zimmer, Carlsbad, CA, USA). Materials Methods: Two abutment groups were tested: (ZirAce, Acucera, Seoul, Korea)...
This study aimed at evaluating the visible light mediated antimicrobial and osteogenic applications of noble metal, such as gold (Au) platinum (Pt) coated titania (TiO2) nanotubes (NTs). In this study, Au Pt nanoparticles (NPs) were deposited on anodized 100 nm TiO2 NTs by ion plasma sputtering. The NPs mainly top surface layer showed absorbance peaks around 470 600 region used in seen from characterization. From results antibacterial activity test, that excellent under irradiation due to...
The infection control of implants is one the hot issues in field medicine and dentistry. In this study, we prepared gold nanorod-sputtered titania nanotubes on titanium surface, which main component implant material, aimed to estimate remote-controlled tetracycline release resulting antibacterial effects using near-infrared laser irradiation. Gold nanorods by ion plasma sputtering (aspect ratio = 1:3) showed optical properties like those chemically synthesized nanorods, exhibiting...
The aims of this study were to estimate the machinability and machining accuracy polymer-based CAM blocks using merlon fracture test model specified in ISO 18675: 2022. Three hybrid disc blanks (MazicDuro, HC Disk, Enamic) three polymethyl methacrylate (PMMA) (PMMA PMMA Block, MazicTemp Hybrid) tested study. was evaluated by assigning scores according range merlons with areas divided ten vertical planes. superimposing methods via CAD reference data specimen data. Within limits study, a...
It has been reported that Janus tyrosine kinase (JAK)-dependent signaling pathways play a critical role in the pathogenesis of numerous malignancies and immune reactions, inhibition JAK implicated cell growth inhibition. The which on osteoclast differentiation anti-bone resorptive activity is not well understood. In this study, we investigated effects pan-JAK inhibitor, pyridone 6, bone-resorption vitro ex vivo. Pyridone 6 inhibited mouse bone marrow macrophage (BMM) cultures stimulated by...
The aim of this study was to estimate the flexural properties three kinds experimental fiber-reinforced composite (FRC) posts and evaluate their potential use as posts. Experimental FRC were fabricated with glass, aramid, UHMWP fibers. Commercial used for comparison. A three-point bending test performed at a crosshead speed 1 mm/min. glass fiber showed significantly higher strengths moduli than aramid demonstrated superior toughness commercial displayed stiff, strong brittle features, while...
The aim of this study was to evaluate the effect reinforcing polyaromatic polyamide (aramid) fibers with various orientations on flexural properties denture base resin. Aramid four unidirectional, woven, non-woven and paper-type were pre-impregnated placed at bottom a specimen mold. Heat-polymerized resin packed over polymerized. A three-point bending test performed using universal testing machine crosshead speed 5 mm/min. strengths moduli unidirectional woven groups significantly higher...
The visible light reactions of noble metal-based photocatalysts have been increasingly utilized to investigate their antibacterial activities. Furthermore, the photoreactions at various wavelengths for specific combinations titania nanotubes and metal nanoparticles found promote osteogenic functionality. In this investigation, a novel multi-coating combination metals (gold platinum) on was assessed using plasmonic photocatalysis low-level laser therapy 470 600 nm. results showed that coating...
The purpose of this research was to prepare gold nanorod‐ (GNR‐) grafted TiO 2 nanotubes by thiolactic acid treatment and evaluate remote‐controlled drug elution antibacterial activity infrared (IR) light irradiation. Tetracycline used as an antibiotic loaded into GNR‐grafted using w/v% polylactic solutions. A near‐IR laser (830 nm) for IR Results SEM, TEM, XRD, EDX revealed that GNR chemically bonded the whole surface nanotubes. An release test on‐off triggered effectively photothermal...
We cultured human mesenchymal stem cells (hMSCs) on TiO 2 nanotubes with diameters of 30–100 nm to assess the size‐effect behavior and osteogenic functionality hMSCs. Most studies expression genes encoding alkaline phosphatase (ALP), osteocalcin (OCN), osteopontin (OPN), integrin‐ β (INT‐B), after 1 week incubation, supported results cell viability MTT assays at 48 hrs plating. However, weeks ALP, OPN, INT‐B, protein kinase R‐like ER (PERK) were significantly higher in 70 than that other Ti....
We investigated the inhibitory effect of antibacterial agents mixed with experimental fluoride varnish (EFV) on Streptococcus mutans. The used were (1 and 10) mM xanthorrhizol, bakuchiol, bavachalcone, isobavachromene, bavachromene. Agar diffusion tests performed S. mutans (1.1×1010 CFU/mL), using without EFV. Bavachalcone showed highest inhibition zone EFV at both (p<0.05). All greater semi-inhibition zones than alone cell viability each agent was not significantly different from vehicle...
Photobiomodulation (PBM) therapy is known to have the potential improve bone regeneration after implant surgery. However, combinatory effect of nanotextured and PBM on osseointegration has not yet been proved. This study evaluated photobiomodulation-based synergistic effects Pt-coated titania nanotubes (Pt-TiO2 NT) 850 nm near-infrared (NIR) light osteogenic performance in vitro vivo. The FE-SEM diffuse UV-Vis-NIR spectrophotometer were used perform surface characterization. live-dead, MTT,...
We have developed nitrogen‐doped TiO 2 nanotubes showing photocatalytic activity in the visible light region and investigated triggered release of antibiotics from these response to remote irradiation. Scanning electron microscopy (SEM) observations indicated that structure was not destroyed on conditions 0.05 0.1 M diethanolamine treatment. The results X‐ray photoelectron spectroscopy (XPS) confirmed nitrogen, forms nitrite () nitrogen monoxide (NO), had been incorporated into nanotube...