A5086315172- Dental materials and restorations
- Dental Erosion and Treatment
- Dental Research and COVID-19
- Semiconductor Lasers and Optical Devices
- Dental Implant Techniques and Outcomes
- Endodontics and Root Canal Treatments
- Semiconductor Quantum Structures and Devices
- Bone Tissue Engineering Materials
- Photonic and Optical Devices
- Surgical Sutures and Adhesives
- Anodic Oxide Films and Nanostructures
- Advanced Fiber Laser Technologies
- Nanofabrication and Lithography Techniques
- Engineering Technology and Methodologies
- Orthodontics and Dentofacial Orthopedics
- Spectroscopy and Laser Applications
- Additive Manufacturing and 3D Printing Technologies
- Laser Design and Applications
- Mesoporous Materials and Catalysis
- Optical Coatings and Gratings
- Dental Health and Care Utilization
- Nanoparticle-Based Drug Delivery
- Injection Molding Process and Properties
Hokkaido University
2011-2018
University of Dental Medicine
2017
Osaka Electro-Communication University
2008-2010
Renesas Electronics (Japan)
2009
The buffering capacity and inhibitory effects on enamel demineralization of two commercially available dental sealants were evaluated in this study. filler particles also examined. Disks cured sealant materials BeautiSealant (silica or S‐PRG filler) Teethmate F‐1 incubated lactic acid solutions ( pH 4.0) for 1–6 d. changes amounts ions released the assessed, surfaces observed using a scanning electron microscope. solution with (S‐PRG was neutralized from 4.0 to 6.1 (after incubation 1 d) 6.7...
The purpose of this study was to evaluate the short-term µTBS (Micro-tensile bond strength) and microscopic (SEM TEM) observation four recent adhesives. One adhesive an experimental step-less 1-step system (LLB-2, Tokuyama Dental), which is all-in-one without light-curing step in application process. other two were self-adhering light-cured flowable composite resin systems FLD (Fusio Liquid Dentin, Pentron Clinical Technologies) VF (Vertise Flow Dental Restorative Materials, Kerr...
The purpose of this study was to evaluate the effect remaining dentin thickness (RDT) on bond strength current adhesive systems. Third molars were randomly allocated among four groups depending system used: Clearfil SE Bond ONE (SE1), G-Bond PLUS (GB), BeautiBond (BB), and Mega (MB). Bonded specimens stored in water at 37°C for 24 h. Teeth then sectioned perpendicular interface produce beams. After measuring RDT each beam, microtensile test carried out using a universal testing machine...
The purpose of this study was to evaluate the microtensile bond strength (µTBS) a newly developed resin cement, ECD-89 (ECD, Tokuyama Dental, Tokyo, Japan) dentin and observe interfacial micromorphology by comparing with two commercial cements, Multilink Automix (MA, Ivoclar Vivadent AG, Schaan, Liechtenstein) Panavia F2.0 (PF, Kuraray Noritake Japan). Flat surfaces human third molars were exposed using #600 SiC. After application primer cement surface, each applied cured light (light...
The purpose of this study was to compare the micro-tensile bond strength (µTBS) three resin core composites dentin and examine bonded interface composites. One experimental TDK-03(TD) and, two commercial, DC Automix (DC) Unifil EM(UN) were used. Flat surfaces human molars exposed using #600 SiC paper with respective adhesive each system. After bonding, built up on cured under conditions: "light condition" or "dark condition". µTBSs (MPa) in light condition were: TD; 60.02±17.08, DC;...
The purpose of this study was to evaluate the effect air-blowing duration on bonding performance all-in-one systems using same pressure (0.25 MPa). Three were: EB (Easy Bond, 3M ESPE, USA), BB (BeautiBond, Shofu Inc., Japan) and GBp (G-Bond plus, GC Corporation, Japan). After adhesive application, 3 were air-blown thereafter 7 different durations (5 s, 10 15 20 25 30 s 35 s). Bond strengths dentin determined µTBS test after 24 h water storage. In addition, evaluation both resin-dentin...
The purpose of this study was to investigate the effect remaining dentin thickness (RDT) and long term water storage on bond strength in-vitro. Twenty-seven third molars were randomly divided into 3 groups: Clearfil Bond SE ONE (SE1, Kuraray Noritake Dental, Okayama, Japan), G-Bond plus (GB, GC, Tokyo, Japan) Mega (MB, Dental). Bonded specimens stored in at 37ºC for 24 h. teeth then sectioned perpendicular adhesive interface produce beams. RDT each beam measured digital calliper....
The aim of this study was to determine the performance an experimental all-in-one adhesive. adhesive, named MTB-200 (Kuraray Medical), contained components enhance both bond strength and hydrophobicity. adhesive compared with that CLEARFIL TRI-S BOND Medical) BeautiBond (SHOFU) using micro-tensile test ultramicroscopic observations. revealed new had highest tensile value among three adhesives over time, although transmission electron microscopic images showed phenomenon filler de-bonding in...
Abstract The band offsets and subband levels in a double quantum well layer for 660nm‐Ga 0.4 In 0.6 P/(Al 0.5 Ga ) P laser are determined by photoreflectance using 410 nm InGaN with current modulation at room temperature. analyzed numerical calculation of the Schrödinger equation structure varying conduction offset compared measured spectra. ratio is to be + 0.03. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Carrier recombination lifetime below threshold has been measured for quantum well lasers with different band offset between the wells and barrier layers. It is longer larger as high ∼5ns in InGaAs formed on GaAs, shorter smaller low ∼1ns InGaAsP InP.
The band offsets and subband levels in a double quantum well layer for 660 nm‐Ga0.4In0.6P/(Al0.5Ga0.5)0.5In0.5P laser are determined by photoreflectance using 410 nm InGaN with current modulation at room temperature. analyzed numerical calculation of Schroedinger equation the structure varying conduction offset compared measured spectra. Conduction ratio is to be 0.5???0.03.
Systematical study of the spontaneous carrier recombination lifetime has been performed in GaAs- and InP-based SCH quantum well lasers with different band offset. The decreases as offset decreases, accompanying electron overflow.