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Displaying 76 - 100 of 2768

Light-Cured Dimethacrylate-Based Resins and Their Composites: Comparative Study of Mechanical Strength, Water Sorption and Ion Release

July 30, 2008
Author(s)
Justin N. O'Donnell, Sarah Langhorst, Michael D. Fow, Joseph M. Antonucci, Drago Skrtic
… flexure strength (BFS), water sorption (WS) and mineral ion release upon immersion in HEPES-buffered saline solution … higher than the BFS of the corresponding ACP composites. Ion release data indicated that a minimum mass fraction of 35 … amorphous calcium phosphate, composites, ion release, mechanical strength, photo-polymerization, water …

Calcium Phosphate Cement With Non-Rigidity and Strength Durability for Periodontal Bone Repair

August 1, 2006
Author(s)
Hockin D. Xu, Shozo Takagi, Limin Sun, L A. Hussain, Laurence C. Chow, William F. Guthrie, James H. Yen
… resorbable, and mech/anically strong calcium phosphate cement (CPC) in a non-rigid form that can provide … motion in periodontal bone repair. Methods. Tetracalcium phosphate, dicalcium phosphate anhydrous, and biopolymer chitosan were used to … calcium phosphate cement, nano hydroxyapatite, non-rigid, periodontal …

The Clinical Effect of Amorphous Calcium Phosphate (ACP) on Root Surface Hypersensitivity

September 1, 2003
Author(s)
S B. Geiger, S Matalon, Joe Blasic, Ming L. Tang, F Eichmiller
… of dentin tubules. A method of rapidly forming calcium phosphate compounds within tubules can mimic sclerosis and … in situ by the sequential application of calcium and phosphate solutions. In this clinical study, thirty patients … air stimulus, amorphous calcium phosphate, dentin sensitivity, obturation of dentin tubules, …

Effect of Resin Composition on the Mechanical and Physical Properties of Calcium Phosphate Filled Bonding Systems

August 1, 2004
Author(s)
Sabine H. Dickens, Glenn M. Flaim, C J. Floyd
… from RCPC via a bonding agent barrier, use of calcium phosphate-filled single solution bonding agents have been … (PMGDM vs. HEMA) and type and amount of the calcium phosphate filler on biaxial flexural strength and ion release … solvent. The composition with the highest calcium and phosphate ion release was further investigated in dentin bond …

Histopathological Reactions of Calcium Phosphate Cement for Alveolar Ridge Augmentation Containing Hydroxyapatite-Coated Implants in Dog Mandibles

October 12, 2021
Author(s)
A Sugawara, K Fujikawa, S K. Kusama, Shozo Takagi, Laurence Chow
… Previous studies have shown that a calcium phosphate cement (CPC), consisting of tetracalcium phosphate and dicalcium phosphate anhydrous, was highly biocompatible and more … alveolar bone, calcium phosphate, cement, histopathology, implant, osteointegration … Histopathological Reactions of Calcium Phosphate Cement for Alveolar Ridge Augmentation Containing …

Effects of Addition of Mannitol Crystals on the Porosity and Dissolution Rates of a Calcium Phosphate Cement

August 1, 2010
Author(s)
Debra Vazquez, Shozo Takagi, Stanislav Frukhtbeyn, Laurence Chow
… The bone defect repair functions of calcium phosphate cement (CPC) are related to its osteoconductivity … prepared by combining an equimolar mixture of tetracalcium phosphate and anhydrous dicalcium phosphate with (0, 10, or 50) mass% of mannitol. … Calcium Phosphate Cement, dissolution rate, porosity, mannitol …

Neutron Polarization Analysis for Biphasic Solvent Extraction Systems

June 16, 2016
Author(s)
Ryuhei Motokawa, Hitoshi Endo, Michihiro Nagao, William T. Heller
… complexes, comprised of Zr(NO 3 ( 4 and tri-n-butyl phosphate (TBP), to decompose the intensity distribution of … Solvent Extraction and Ion Exchange … polarization analysis, Solvent extraction, Tri-n-butyl phosphate …

Post-Source Decay of Polystyrene Ions in Matrix-Assisted LaserDesorption/Ionization

January 1, 1999
Author(s)
R J. Goldschmidt, S Wetzel, William R. Blair, Charles M. Guttman
… Analyte ions produced in matrix-assisted laser desorption/ionization … little or no prompt fragmentation ofinitially formed ions. In many cases only intact molecular ions are observed in MALDI mass spectra. This is generally … Post-Source Decay of Polystyrene Ions in Matrix-Assisted LaserDesorption/Ionization …

The Mobilities of Ions and Cluster Ions Drifting in Polar Gas

April 1, 1997
Author(s)
J A. de Gouw, M Krishnamurthy, S R. Leone
… The mobility of ions drifting in polar gases is explored both theoretically … New expermental results are presented for (1) NO+ ions drifting in H 2 O (the resuced zero-field mobility K 0 … is 0.66+or-}0.07 cm 2 V -1 s -1 ), (2) H 3 O+(H6d2^O) 3 ions drifting in H 2 O (K 0 (0) =0.43+or-}0.06cm 2 V -1 s -1 …

Effect of a Water Rinse on Labile Fluoride and Ether Ions in Plaque and Saliva Before and After Conventional and Experimental Fluoride Rinses

March 1, 2001
Author(s)
Gerald L. Vogel, Z Zhang, Laurence C. Chow, Gary E. Schumacher
… apparently due to water induced loss of calcium binding ions. Water- or fluoride-rinse-induced changes in plaque … caries, fluoride, labile ions, plaque, saliva … Effect of a Water Rinse on Labile Fluoride and Ether Ions in Plaque and Saliva Before and After Conventional and …

Phosphate-Functionalized MOF-808 for High Performance Li-S Batteries

May 8, 2023
Author(s)
Bingqian Liu, Avery Baumann, Megan Butala, V. Sara Thoi
… their practical implementation. Herein, we adopted a phosphate-functionalized zirconium metal–organic framework … in preventing soluble polysulfides from leaching. Phosphate groups were introduced to the framework … Li ion transport. The successful incorporation of phosphate in MOF-808 was demonstrated by a series of …

Crystal Structures of Calcium Orthophosphates

December 1, 2001
Author(s)
M Mathew, Shozo Takagi
… related to apatite-type structures, such as octacalcium phosphate (OCP), Ca 8 (HPO 4 ) 2 (PO 4 ) 4 5H 2 O and tetracalcium phosphate (TTCP), Ca 4 (PO 4 ) 2 O;(2) the glaserite type, … 4 sheet-containing compounds, which include dicalcium phosphate dihydrate (DCPD), CaHPO 4 2H 2 O, dicalcium …

Properties of Calcium Phosphate Cement with Chondroitin Sulfate

October 12, 2021
Author(s)
S Hirayama, Francis W. Wang, Shozo Takagi, T Ikemi
… (HA) conversion of polymer-modified self-hardening calcium phosphate cements (CPCs) that were prepared with chondroitin … calcium phosphate cement, Condroitin sulfate, glycosaminoglycan, … Properties of Calcium Phosphate Cement with Chondroitin Sulfate …

An In Vitro Model for Studying Bioresorption Rate of Calcium Phosphate Bone Graft Materials

October 16, 2008
Author(s)
Laurence C. Chow, Shozo Takagi, Milenko Markovic
… postulated that the in vivo resorption rates of calcium phosphate bone graft materials are closely related to their … the factors that control resorption rates of other calcium phosphate biomaterials and coating. … bioresorption, bone graft materials, calcium phosphate cement, dissolution, macroporosity, microporosity …

Measurement of Calcium Activity in Oral Fluids by Ion Selective Electrode: Method Evaluation and Simplified Calculation of Ion Activity Products

March 1, 2000
Author(s)
Clifton M. Carey, Gerald L. Vogel
… activity in very small plaque fluid samples is by micro ion-selective electrode (ISE). Two commercially available … made with micro ISEs that contained the neutral ion-carrier of whole plaque samples and plaque fluid samples … simplified calculation method is presented to estimate the ion activity product (IAP) of the calcium-phosphate minerals. …

Inkjet Metrology and Standards for Ion Mobility Spectrometry

September 1, 2007
Author(s)
R M. Verkouteren, J Brazin, Eric S. Windsor, Robert A. Fletcher, R Maditz, Wayne Smith, John G. Gillen
… BHT-PLGA microspheres show peaks in positive and negative ion modes, which demonstrate usefulness for testing portals … International Journal of Ion Mobility Spectrometry … calibration, explosives, homeland security, inkjet, ion mobility spectrometry, piezoelectric, portals, standards, …

Composition of Plaque and Saliva Following Use of an A-tricalcium Phosphate-Containing Chewing Gum and a Subsequent Sucrose Challenge

January 1, 2000
Author(s)
Gerald L. Vogel, Z Zhang, Clifton M. Carey, A K. Ly, Laurence C. Chow, H M. Proskin
… that chewing of a 2.5% (mass fraction) α-tricalcium phosphate-fortified (a-TCP) experimental chewing gum released sufficient calcium and phosphate to eliminate any fall in the tooth mineral … was to examine if the release of ions from plaque calcium phosphate pools induced by this gum could provide protection …

Changes in Lactate and Other Ions in Plaque and Saliva After a Fluoride Rinse and Subsequent Sucrose Administration

January 1, 2002
Author(s)
Gerald L. Vogel, Z Zhang, Laurence C. Chow, A L. Galvin
… studies showing a pH mediated increase in the latter ions, was due to salivary clearance or diffusive loss into … of the rinses. Similarly the site distribution of all ions appeared to be not only controlled by these factors … (fluoride, sucrose and water), as well as the clearance of ions into these components require further study if a …

Masked Ion Beam Lithography with Highly Charged Ions

September 1, 1998
Author(s)
John D. Gillaspy, D Parks, L P. Ratliff
… Masked ion beam lithography using highly charged ions is demonstrated for the first time by producing an array … exposure of the resist is incomplete and isolated single-ion impact sites can be seen within the exposed areas. Atomic … AFM, atomic force microscopy, highly charged ion, ion beam, ion tracks, lithography, PMMA …

In Vitro and in Vivo Characteristics of Fluorapatite-forming Calcium Phosphate Cements

August 1, 2010
Author(s)
Shozo Takagi, Stanislav A. Frukhtbeyn, Laurence C. Chow, Akiyoshi Sugawara, Kenji Fujikawa, Kidehiro Ogata, Makoto Hayashi, Bunnai Ogiso
… in vivo properties of fluorapatite (FA)-forming calcium phosphate cements (CPCs). The experimental cements contained … fluorapatite-forming calcium phosphate cement, high crystallinity, biocompatible, animal … in Vivo Characteristics of Fluorapatite-forming Calcium Phosphate Cements …
Displaying 76 - 100 of 2768
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