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D189006
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关键词:'D189006'
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Jennifer L Moreau et al.
Journal of biomedical materials research. Part A, 81(3), 594-602 (2006-12-21)
There is an increasing need to develop new biomaterials as tissue engineering scaffolds. Unfortunately, many of the materials that have been studied for these purposes are polyesters that hydrolytically degrade into acidic products, which may harm the surrounding tissue, and
S Makihira et al.
Mycoses, 45(8), 300-305 (2003-02-08)
The effects of four liquid components of denture acrylic resin on host cell activity and fungal adhesion were investigated in this study. The low concentration (1 micromol l(-1)) of the liquid components caused no change in the activities and morphologies
Yi-Ching Li et al.
Journal of biomedical materials research. Part B, Applied biomaterials, 84(1), 58-63 (2007-04-25)
9-Fluorenone (9F), the aromatic photosensitizer, is widely used as an initiator in visible-light (VL) cured resin systems. There is growing concern that 9F may produce genetic damage by inducing mutation. In this study, 9F in the presence or absence of
M Noda et al.
Journal of biomedical materials research. Part A, 83(1), 123-129 (2007-03-27)
Resin composites are widely used in dentistry, and are polymerized in situ using a blue-light activated, free-radical polymerization mechanism. Blue light (400-500nm) is used to activate camphoroquinone (CQ), which decomposes to form free radicals that are stabilized by dimethyl-p-toludine (DMPT).
National Toxicology Program technical report series, (579)(579), 1-211 (2012-10-03)
N,N-dimethyl-p-toluidine was nominated for toxicology and carcinogenesis studies by the National Cancer Institute based on the potential for human exposure through its use in dental materials and bone cements and the lack of toxicity and carcinogenicity data. Male and female
Y Nomura et al.
Journal of materials science. Materials in medicine, 17(1), 29-32 (2006-01-04)
The polymerization initiators for resins cured using visible light usually consist of a photosensitizer, primarily camphorquinone (CQ), and a reducing agent, which is often a tertiary amine (DMPT, DMAEMA), while the initiator used for self-curing resins consists of benzoyl peroxide
Monika Smiga-Matuszowicz et al.
Materials science & engineering. C, Materials for biological applications, 45, 64-71 (2014-12-11)
In this study new biodegradable materials obtained by crosslinking poly(3-allyloxy-1,2-propylene succinate) (PSAGE) with oligo(isosorbide maleate) (OMIS) and small amount of methyl methacrylate were investigated. The porous scaffolds were obtained in the presence of a foaming system consisted of calcium carbonate/carboxylic
Libby R Heeb et al.
The journal of physical chemistry. A, 110(20), 6408-6414 (2006-05-19)
The dynamics of proton transfer within the triplet contact radical ion pair of a variety of substituted benzophenones with N,N-diethylaniline, N,N-dimethyl-p-toluinide, and N,N-diallylaniline are examined in solvents of varying polarity. The correlation of the rate constants with driving force reveal
Adilson Y Furuse et al.
Dental materials : official publication of the Academy of Dental Materials, 27(5), 497-506 (2011-03-11)
To evaluate the influence of different tertiary amines on degree of conversion (DC), shrinkage-strain, shrinkage-strain rate, Knoop microhardness, and color and transmittance stabilities of experimental resins containing BisGMA/TEGDMA (3:1wt), 0.25wt% camphorquinone, 1wt% amine (DMAEMA, CEMA, DMPT, DEPT or DABE). Different
Julie M Hasenwinkel et al.
Journal of biomedical materials research, 59(3), 411-421 (2002-01-05)
Porous-free, two-solution bone cements have been developed in our laboratory as an alternative to commercial powder/liquid formulations. Each pair of solutions consist of poly(methyl methacrylate) (PMMA) powder dissolved in methyl methacrylate (MMA) monomer, with benzoyl peroxide (BPO) added to one
Wasana Iramaneerat et al.
The International journal of prosthodontics, 17(3), 345-349 (2004-07-09)
The purpose of this study was to determine the proper prerequisite conditions for gas injection and the steps for applying gas injection for obturator fabrication. Optimal prerequisite conditions were investigated by using thermocoupling to verify exothermic changes in the resin
Richard Milner
Journal of biomedical materials research. Part B, Applied biomaterials, 68(2), 180-185 (2004-01-23)
Commercially available acrylic bone cements are two-component systems based on the polymerization of methyl methacrylate around poly(methyl methacrylate) particles. When benzoyl peroxide (BPO), which is the initiator, in the powder component meets accelerator (N,N-dimethyl-p-toluidine (DMpT)) in the liquid component, radicals
Seungbum Lee et al.
Journal of biomedical materials research. Part B, Applied biomaterials, 83(2), 391-399 (2007-04-20)
The objective of this investigation was to analyze whether various combinations of the ROS scavengers glutathione (GSH), N-acetyl-cysteine (NAC), and vitamins C and E decrease DNA damage due to visible-light-irradiated (VL-irradiated) camphorquinone/N,N-dimethyl-p-toluidine (CQ/DMT) compared with individual vitamin C or E.
Chemoselective C? H Bond Activation: Ligand and Solvent Free Iron-Catalyzed Oxidative C? C Cross-Coupling of Tertiary Amines with Terminal Alkynes. Reaction Scope and Mechanism.
Volla C M R, et al.
Organic Letters, 11(8), 1701-1704 (2009)
Gladius Lewis et al.
Journal of biomedical materials research. Part A, 81(3), 544-553 (2006-11-30)
In all but one of the acrylic bone cement brands used in cemented arthroplasties, N,N-dimethyl-4-toluidine (DMPT) serves as the activator of the polymerization reaction. However, many concerns have been raised about this activator, all related to its toxicity. Thus, various
Kyle Winter et al.
Biomaterials, 26(26), 5321-5329 (2005-04-09)
Previous investigations have found that visible-light (VL)-irradiated camphorquinone (CQ), in the presence of a tertiary amine (e.g., N,N-dimethyl-p-toluidine, DMT), generates reactive oxygen species and causes oxidative DNA damage in vitro. In this study, oxidative DNA damage produced by VL-irradiated CQ/DMT
Sachiko Kaihara et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 68(1), 67-73 (2007-09-25)
While many synthetic, hydrolytically degradable hydrogels have been developed for biomedical applications, there are only a few examples whose polymer backbone does not form acidic products upon degradation. In order to address this concern, we proposed to develop a hydrogel
Chiemi Hirabayashi et al.
Dental materials journal, 21(4), 314-321 (2003-03-01)
Polymerization characteristics of poly (methyl methacrylate)(PMMA)/(methyl methacrylate) (MMA) resin initiated by tributylborane (TBB) were compared with those by benzoyl peroxide (BPO)/N,N-dimethyl-p-toluidine and camphorquinone (CQ)/N,N-dimethylaminoethyl methacrylate from the aspects of temporal changes of residual MMA and molecular weight up to 4
Silke Schlaubitz et al.
PloS one, 9(10), e110251-e110251 (2014-10-21)
The repair of bone defects is of particular interest for orthopedic, oral, maxillofacial, and dental surgery. Bone loss requiring reconstruction is conventionally addressed through bone grafting. Depending on the size and the location of the defect, this method has limits
Anuradha Prakki et al.
Dental materials : official publication of the Academy of Dental Materials, 25(1), 26-32 (2008-09-02)
The purpose of this study was to evaluate the effect of two additives, propionaldehyde/aldehyde or 2,3-butanedione/diketone, on mechanical properties of Bis-GMA-based composites containing TEGDMA, propoxylated Bis-GMA (CH(3)Bis-GMA) or propoxylated fluorinated Bis-GMA (CF(3)Bis-GMA). Three control composites, Bis-GMA/diluent monomer (25/75 mol%), and
Kazuo Umemura et al.
Journal of microbiological methods, 92(3), 349-354 (2013-01-23)
We performed a trajectory analysis of movements of Navicula pavillardii diatom cells that were confined to semi-circular microgrooves with several different curvature radii. Using the semi-circular micropattern, we succeeded in observing change of velocity of the same cell before and
Kelly J Dix et al.
Journal of toxicology and environmental health. Part A, 70(10), 789-798 (2007-04-25)
N,N-Dimethyl-p-toluidine (DMPT) is used as a polymerization accelerator, in industrial glues, and as an intermediate in dye and pesticide synthesis. There is potential for human exposure to DMPT. The disposition of oral and intravenous (i.v.) doses of [14C]DMPT in F344
Kouhei Masuki et al.
Dental materials journal, 26(6), 861-869 (2008-01-22)
The aim of this study was to examine the apoptotic and necrotic influence of four dental resin polymerization initiators--namely benzoyl peroxide (BPO), camphorquinone (CQ), dimethylaminoethyl methacrylate (DMAEMA), and dimethyl-para-toluidine (DMPT)--on human gingival fibroblast (HGF) cells. To this end, the growth
Nam-Cheol Kim et al.
Journal of toxicology and environmental health. Part A, 70(10), 781-788 (2007-04-25)
The metabolism of orally administered N,N-dimethyl-p-toluidine (DMPT) in male F344 rats was investigated. The rat urinary metabolite profile was determined by analytical reverse-phase high performance liquid chromatography (HPLC). Four radiolabeled peaks were observed, isolated, and purified by solid-phase extraction (SPE)
S G Pereira et al.
Journal of materials science. Materials in medicine, 19(9), 3135-3144 (2008-04-17)
Electron paramagnetic resonance (EPR) was used to study the kinetics of methacrylate radical formation in the monomer mixture 2,2-bis [4-(2-hydroxy-3-methacryloxyprop-1-oxy) phenyl] propane (Bis-GMA)/triethylene glycol dimethacrylate (TEGDMA), in the presence of a photo-initiator system (camphorquinone, CQ/N,N-dimethyl-p-toluidine, DET). Curing-time dependences on the
En-Sheng Keh et al.
Dental materials journal, 21(4), 373-382 (2003-03-01)
Self-curing dental resins are always manipulated in the presence of curing inhibitory factors such as oxygen, hydroquinone, water and another contaminants such as saliva and blood. The purpose of this study was to elucidate the effects of eliminating these curing
Izabela M Barszczewska-Rybarek et al.
Acta of bioengineering and biomechanics, 17(3), 13-22 (2015-12-22)
This paper presents the pilot study aimed at the development of new full interpenetrating polymer networks based on urethane- dimethacrylate and biodegradable epoxy-polyester as the proposition of new biomaterials with gradually emerging porosity. The urethane-dimethacrylate monomer was obtained from 4,4'-methylenebis(phenyl
Yi-Ching Li et al.
Journal of biomedical materials research. Part B, Applied biomaterials, 82(1), 23-28 (2006-10-17)
Camphorquinone (CQ) is widely used as an initiator in modern visible-light (VL) cured resin systems. CQ is also characterized as a potential allergenic compound. To date, there is growing concern that CQ may produce genetic damage by inducing mutation. In
Chiemi Hirabayashi
Dental materials journal, 22(1), 48-55 (2003-06-07)
The effects of dual use of tributylborane (TBB) and benzoyl peroxide/ N,N-dimethyl-p-toluidine (BPO/DMPT) or camphorquinone/N,N-dimethyaminoethyl methacrylate (CQ/DMAEMA), as well as BPO/DMPT and CQ/DMAEMA for comparison purposes, on postpolymerization of PMMA/MMA resin were examined from the view point of long term
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