A5087702316- Bone Tissue Engineering Materials
- Dental Implant Techniques and Outcomes
- Dental materials and restorations
- Titanium Alloys Microstructure and Properties
- Polymer Surface Interaction Studies
- biodegradable polymer synthesis and properties
- Electrospun Nanofibers in Biomedical Applications
- Glass properties and applications
- Chemical Synthesis and Characterization
- Silicone and Siloxane Chemistry
- Additive Manufacturing and 3D Printing Technologies
- Mesoporous Materials and Catalysis
- Orthopaedic implants and arthroplasty
- Advanced NMR Techniques and Applications
- Synthesis of heterocyclic compounds
- Dental Erosion and Treatment
- Synthesis and Reactions of Organic Compounds
- 3D Printing in Biomedical Research
- Collagen: Extraction and Characterization
- Marine Biology and Environmental Chemistry
- Advanced Photocatalysis Techniques
- Hydrogels: synthesis, properties, applications
- Luminescence Properties of Advanced Materials
- Calcium Carbonate Crystallization and Inhibition
- Drug Transport and Resistance Mechanisms
Nihon University
2009-2025
Okayama University
2014-2024
Council of Science Editors
2014-2018
Waldorf College
2014-2018
Hudson Institute
2016-2018
Okayama University of Science
2013-2017
Okayama Prefecture
2017
Animal Science Research Institute
2014-2015
Okayama Shoka University
2014
Nagoya Institute of Technology
1989-2013
According to the ‘Adhesion–Decalcification’ concept, specific functional monomers within dental adhesives can ionically interact with hydroxyapatite (HAp). Such ionic bonding has been demonstrated for 10-methacryloyloxydecyl dihydrogen phosphate (MDP) manifest in form of self-assembled ‘nano-layering’. However, it remained be explored if such nano-layering also occurs on tooth tissue when commercial MDP-containing (Clearfil SE Bond, Kuraray; Scotchbond Universal, 3M ESPE) were applied...
Abstract Currently, the functional monomer 10-methacryloyloxy-decyl-dihydrogen-phosphate (10-MDP) was documented to chemically bond zirconia ceramics. However, little research has been conducted unravel underlying mechanisms. This study aimed assess chemical interaction and demonstrate mechanisms of coordination between 10-MDP zirconium oxide using 1 H 31 P magic angle spinning (MAS) nuclear magnetic resonance (NMR) two dimensional (2D) → heteronuclear correlation (HETCOR) NMR. In addition,...
Among functional monomers used in contemporary dental adhesives, 10-methacryloyloxydecyl dihydrogen phosphate (MDP) has been found to interact chemically with hydroxyapatite (HAp) most intensively and stably. This effect was thought be the basis of superior bonding effectiveness MDP-based self-etch adhesives enamel/dentin. To elucidate fully chemical interaction reactivity MDP HAp, we 31 P CP-MAS NMR spectroscopy powder x-ray diffraction. In an aqueous ethanol solution, Ca ions were leached...
Commercially available pure metallic titanium was chemically treated at 60°C for 24 h with H2O2 solutions containing various metal chlorides to provide bioactivity, that is, give it the ability form a biologically active bone-like apatite layer on surface. After chemical treatment specimens were soaked in simulated body fluid (the Kokubo solution). Apatite found deposit H2O2/TaCl5 and H2O2/SnCl2 solutions. X-ray photoelectron spectroscopic (XPS) study of those indicated basic Ti-OH groups...
A titania layer with ordered nanostructures is expected to be of high photocatalytic activity due mainly its specific surface area. In the present work, large-area films nanorods were deposited on titanium substrates through a solution approach. The nanorods, phase composition mixture anatase and rutile, grew top condensed interlayer along rutile [001]-axis. was evaluated by decomposing rhodamine B in water compared general sol−gel derived commercial DP-25 coating. It found that as-deposited...
Previous research showed that the functional monomer 10-methacryloxydecyl dihydrogen phosphate (MDP) ionically bonds to hydroxyapatite (HAp) and forms a nano- layered structure at interface with HAp-based substrates. Such hydrophobic nano-layering is considered contribute long-term durability of bond tooth tissue. However, dental adhesives are complex mixtures usually containing different monomers. This study investigated effect 2-hydroxyethylmethacrylate (HEMA) on chemical interaction MDP...
Besides chemically interacting with hard tooth tissue, acidic functional monomers of self-etch adhesives should etch the prepared surface to dissolve smear layer and provide micro-retention. Although etching efficacy is commonly determined in terms pH, pH cannot accurately be measured. Better measure hydroxyapatite (HAp)-dissolving capacity, also considering that may form monomer-Ca salts. Here, 6 (GPDM, phenyl-P, MTEGP, 4-META, 6-MHP 10-MDP) was investigated. Solutions containing 15 wt%...
Surface modification of titanium and its alloys to induce apatite deposition within a short period is practical importance in clinical applications. In this study, substrates were treated with hydrogen peroxide solutions at low temperatures yield titania layers consisting anatase rutile. Those layers, regardless the fraction rutile, bioactive Kokubo's simulated body fluid 24 h. The bioactivity was attributed both epitaxial effect abundant Ti–OH group layer.
Commercially pure titanium was treated with a H2 O2/3mM TaCl5 solution at 80°C for various periods and titania gel layer formed on the surface. This remained amorphous when heating 1 h below 200°C transformed to anatase after between 300° 600°C. The layers were found be bioactive as deposit carbonate ion-incorporated apatite within day of immersion in Kokubo solution, whereas did not 7 days. particles nucleate preferentially inside cracks prevailing thicker 1-h chemically specimens. After...
Commercially pure titanium specimens are subjected to three different treatments, and their bioactivity evaluated by immersing the in a simulated body fluid (SBF, Kokubo's recipe) for various periods up 7 days, with particular attention being paid differences apatite deposition between surfaces open SBF contact container's bottom. The treatment H(2)O(2)/HCl solution at 80 degrees C 30 min followed heating 400 1 h produces an anatase titania gel layer on specimen surface. This deposits both...
Commercially pure titanium specimens are subjected to three different treatments, and their bioactivity evaluated by immersing the in a simulated body fluid (SBF, Kokubo's recipe) for various periods up 7 days, with particular attention being paid differences apatite deposition between surfaces open SBF contact container's bottom. The treatment H(2)O(2)/HCl solution at 80 degrees C 30 min followed heating 400 1 h produces an anatase titania gel layer on specimen surface. This deposits both...
Abstract Two highly enantioselective methods for hydrocyanation of aldehydes were developed by using chiral alkoxytitanium reagents. Treatment benzaldehyde with cyanotrimethylsilane in the presence a affords mandelonitrile good chemical and optical yields. By use cyanotitanium reagent generated situ from cyanotrimethylsilane, aliphatic are converted into corresponding cyanohydrins manner.
Previous research, in which the bonding effectiveness of 3 self-etch monomers HAEPA, EAEPA, and MAEPA was determined, showed that most effective. In this study, molecular interactions these with hydroxyapatite dentin were investigated by combining x-ray diffraction, infrared spectroscopy, scanning electron microscopy. We tested null hypothesis performance does not correlate to formation monomer-calcium salts hydrolytic stability complexes. Monomer/ethanol/water solutions prepared applied...