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Razeq Fakhria M FM Department of Biology and Institute of Biochemistry, Carleton University, Ottawa, Ontario, - - 2014
Camelina sativa (L.) Crantz is an emerging low input, stress tolerant crop with seed oil composition suitable for biofuel and bioproduct production. The chemical compositions and ultrastructural features of surface waxes from C. sativa aerial cuticles, seeds, and roots were analyzed using gas chromatography and microscopy. Alkanes, primary fatty alcohols, ...
Silveira Cintia C Department of Pediatric Dentistry, School of Dentistry, São Leopoldo Mandic Dental Research Center, Campinas, - - 2014
The aim of this study was to analyze the effect of solutions containing saturated anacardic acid (AA) on dentine erosion in vitro. AA was chemically isolated from natural cashew nutshell liquid obtained by continuous extraction in a Soxhlet extractor and was fully saturated by catalytic hydrogenation. Matrix metalloproteinase 2 (MMP-2) ...
Dehghan M - - 2014
This in vitro study investigated 4 products (containing calcium, phosphate, and/or fluoride) and their ability to reharden enamel softened by hydrochloric acid as compared to hardening with saliva alone. Extracted human molars were embedded and polished, and baseline Vickers hardness (VH) of enamel was measured. Statistical analysis was performed with ...
Guedes Sarah F F SF 1 Faculty of Pharmacy, Dentistry, and Nursing, Federal University of Ceará , Rodolfo Teófilo, Brazil - - 2014
Abstract Objective: This study investigated the effect of phosphoric acid concentration on microshear bond strength (μSBS) of an etch-and-rinse adhesive system to demineralized irradiated enamel. Background data: Er:YAG laser irradiation may increase acid resistance of enamel; however, its use is associated with reduced bonding effectiveness. Materials and methods: Three experimental ...
Srinivasan Raghu R Department of Conservative Dentistry and Endodontics, A.E.C.S Maaruti College of Dental Sciences and Research Centre, Bangalore, Karnataka, - - 2014
To evaluate the efficacy of 35% orthophosphoric acid, 24% ethylenediaminetetraacetic acid (EDTA) and 10% citric acid in the removal of smear layer from retrocavities prepared with ultrasonic retro-tips using scanning electron microscopy. Root canals of fifty single-rooted teeth were cleaned, shaped, and obturated with gutta-percha and AH plus sealer. The ...
Sipponen Mika Henrikki MH Aalto University School of Chemical Technology, Department of Biotechnology and Chemical Technology, Espoo, Finland. Electronic address: - - 2014
A new colorimetric method for determining the surface-accessible acidic lignin hydroxyl groups in lignocellulose solid fractions was developed. The method is based on selective adsorption of Azure B, a basic dye, onto acidic hydroxyl groups of lignin. Selectivity of adsorption of Azure B on lignin was demonstrated using lignin and ...
Stawarczyk Bogna B Senior Materials Scientist, Department of Prosthodontics, Dental School, Ludwig-Maximilians-University of Munich, Munich, Germany. Electronic address: - - 2014
Polyetheretherketone (PEEK) can be used as a framework material for fixed dental prostheses. However, information about the durable bond to veneering resins is still scarce. The purpose of this study was to investigate the effect of chemical treatments of PEEK on tensile bond strength (TBS) to veneering resins with special ...
Pinto Shelon Cristina - - 2014
Considering the current high use of high fluoride toothpastes, the aim of the study was to quantify alterations in the root dentine permeability submitted to treatment with a high fluoride toothpaste and 8% arginine, calcium carbonate, sodium monofluorophosphate toothpaste as a preventive treatment for dentinal tubules exposure followed by acid ...
Yeasmin Sabina S Department of Environmental Sciences, Faculty of Agriculture and Environment, The University of Sydney, Sydney, NSW 2006, Australia. Electronic address: - - 2014
Batch experiments were conducted to evaluate the sorption-desorption behaviour of (14)C-labelled carboxylic acids (citric and oxalic) and amino acids (glutamic, alanine, phenylalanine and lysine) on pure minerals (kaolinite, illite, montmorillonite, ferrihydrite and goethite). The sorption experiments were complemented by ATR-FTIR spectroscopy to gain possible mechanistic insight into the organic acids-mineral ...
Al-Khateeb S N SN Department of Preventive Dentistry, Faculty of Dentistry, School of Dentistry, Jordan University of Science and Technology, P.O. Box 3030, Irbid, Jordan, - - 2014
To investigate the effect of acid etching procedure on the remineralisation of white spot lesions (WSL) which had undergone an initial phase of arrest, and to compare between the effect of fluoride and/or CPP-ACP on remineralisation before and after acid etching. In vitro study. WSL were prepared in vitro on ...
Pan Baofei - - 2014
As part of our ongoing interest in main group Lewis acids for fluoride anion complexation and element-fluorine bond activation, we have synthesized the stibonium borate salt [Sb(C6F5)4][B(C6F5)4] (3). The perfluorinated stibonium cation [Sb(C6F5)4]+ present in this salt is a potent Lewis acid which abstracts a fluoride anion from [SbF6]- and ...
Menees Timothy S TS Undergraduate student, Department of Chemistry, University of Alabama at Birmingham School of Dentistry, Birmingham, - - 2014
Lithium disilicate is a translucent, glass-containing material used for ceramic restorations. Clinicians frequently use alumina abrading or hydrofluoric acid etching to create micromechanical retention in the intaglio surface before bonding a lithium disilicate restoration to the tooth. Few studies have investigated how the etching or abrasion processes affect the flexural ...
Masoudi Rad H H Department of Endodontics, Faculty of Dentistry, Guilan University of Medical Sciences, Rasht, - - 2014
This study determines the mean concentrations of free amino acids in stimulated and unstimulated whole saliva in healthy young adults. Standardised salivary amino acids as a substitute for their counterpart in blood, searched for the source of free amino acids in saliva, the probable correlation between particular amino acids with ...
Liu Y Y University of Missouri-Kansas City School of Dentistry, 650 East 25th Street, Kansas City, MO 64108, - - 2014
Previous studies found that grape seed extract (GSE), which is rich in proanthocyanidins, could protect demineralized dentin collagen from collagenolytic activities following clinically relevant treatment. Because of proanthocyanidin's adverse interference to resin polymerization, it was believed that GSE should be applied and then rinsed off in a separate step, which ...
Parker Alexander S AS Electrochemistry and Interfaces Group, Department of Chemistry, University of Warwick, Coventry, CV4 7AL, - - 2014
To investigate the formation of hydroxyapatite (HAP) from calcium silicate and the deposition of calcium silicate onto sound and acid eroded enamel surfaces in order to investigate its repair and protective properties. Calcium silicate was mixed with phosphate buffer for seven days and the resulting solids analysed for crystalline phases ...
Hornby Kate K Unilever Oral Care, Quarry Road East, Bebington, Wirral, CH63 3JW, UK. Electronic address: - - 2014
To investigate the enamel health benefits of a novel toothpaste and a dual phase gel containing calcium silicate, sodium phosphate and fluoride. Enamel demineralisation was assessed using two pH cycling protocols with either lactic acid or citric acid as the acid challenge. Remineralisation of lactic acid softened and citric acid ...
Wang Z Z Division of Endodontics, Department of Oral Biological & Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada; The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, PR - - 2014
To investigate the microhardness and microstructural features of three tricalcium silicate materials: mineral trioxide aggregate (MTA), Endosequence Root Repair Material Putty (ERRM Putty) and Endosequence Root Repair Material Paste (ERRM Paste), after exposure to a range of acidic environments in comparison with intermediate restorative material (IRM). ERRM Putty (Brasseler, Savannah, ...
Zhao Lixia L Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR - - 2014
The sorption of four perfluoroalkyl acids (PFAAs) [perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS), perfluorooctanoic acid (PFOA) and perfluorohexanoic acid (PFHxA)] on three typical minerals [montmorillonite (MM), kaolinite (KL) and hematite (HM)] was studied. The sorption of PFOS and PFHxS was much stronger than PFOA and PFHxA. The sorption of each ...
Park Inyu - - 2014
The samarium-doped barium cerate (BaCe0.8Sm0.2O(3-delta), BCS) nano crystalline powders were synthesized via citric-nitrate method. The BCS nanopowders were prepared with various molar ratio of citric acid to metal nitrate. The pure perovskite structure was obtained from the BCS calcinated at 1200 degrees C and its crystalline size was increased with ...
Kirchhoff A L - - 2014
The action of endodontic instruments during biomechanical preparation results in smear layer formation. Removing the smear layer enhances disinfection into dentinal tubules in addition to allowing tridimensional sealing of the root canal system. This study was designed to evaluate the smear layer removal and quantify the calcium ion release resulting ...
Alavi Shiva S Dental Materials Research Center and Department of Orthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, - - 2014
Laser ablation has been suggested as an alternative method to acid etching; however, previous studies have obtained contrasting results. The purpose of this study was to compare the shear bond strength (SBS) and fracture mode of orthodontic brackets that are bonded to enamel etched with acid and erbium-doped yttrium aluminum ...
Giacaman Rodrigo A RA Cariology Unit, Department of Oral Rehabilitation and Interdisciplinary Excellence Research Program on Healthy Aging (PIEI-ES), University of Talca, 2 Norte 685, Escuela de Odontología, Talca, Chile, - - 2014
Based on scarce evidence, fatty acids have been described as anticariogenic. The aim was to evaluate the effect of different types of fatty acids on enamel demineralization and on the cariogenic properties of Streptococcus mutans biofilms on a biofilm/caries model. Mature biofilms of S. mutans UA159 growing on bovine enamel ...
Aykut-Yetkiner Arzu A University of Zurich, Clinic for Preventive Dentistry, Periodontology and Cariology, Zurich, Switzerland; University of Ege, Faculty of Dentistry, Department of Pediatric Dentistry, Izmir, Turkey. Electronic address: - - 2014
To investigate the effect of saliva substitutes on enamel erosion in vitro. Material and methods: A total of 204 bovine enamel samples were embedded in acrylic resin and allocated to 17 groups (n=12). The specimens were eroded in an artificial mouth (3 d; 6×30 s/d, flow rate: 2ml/min) using citric ...
Sharma Abhishek A Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz khas, New Delhi 110016, - - 2014
Protease and fatty acids are known to serve as pathogenic factors against root-knot nematodes. Here, we utilized Karanja deoiled cake as a nitrogen source for the first time in induction of protease by Paecilomyces lilacinus. Fatty acids, especially butyric acid, have also been detected in the same fungal culture filtrate.
Harryparsad A - - 2014
The aim of this in-vitro study was to assess the long-term effects of hydrochloric acid on the surface roughness of three all-ceramic restorative materials CEREC VITABLOC Mark II CAD, IPS Empress CAD and IPS e.max CAD. Six cylindrical specimens (10mm diameter, 3mm height) of each material type were prepared, using ...
Bertacci Angelica A 1 School of Dentistry, Department of Biomedical and Neuromotor Sciences (DiBiNeM), University of Bologna, Bologna - - - 2014
Purpose: The aim of this study was to evaluate enamel acid-induced structural changes after 2 different treatments, by means of Raman and infrared (IR) spectroscopy analyses, and to correlate these findings with permeability measured as fluid discharge from outer enamel. Methods: Two different treatments were investigated: 10 enamel slices were ...
Al-Kawari Huda M - - 2014
The effects of fluoride and CPP-ACP before bracket bonding on the shear bond strength of orthodontic brackets have been reported with contradicting results. The objective of this in vitro study was to evaluate the effect of different preventive agents namely; casein phosphopeptide-amorphous-calcium-phosphate (CPP-ACP), fluoride-containing-CPP-ACP (CPP-ACPF) and 5% sodium fluoride (5%NaF), ...
Manuela Díaz-Monroy Jennifer J Universidad Autónoma del Estado de México, Facultad de Odontología, Centro de Investigación y Estudios Avanzados en Odontología (CIEAO), Jesús Carranza esq. Paseo Tollocan, Col. Universidad, C.P. 50130, Toluca, Estado de México, - - 2014
Several scientific reports have shown the effects of Er:YAG laser irradiation on enamel morphology. However, there is lack of information regarding the morphological alterations produced by the acid attack on the irradiated surfaces. The aim of this study was to evaluate the morphological changes produced by acid dissolution in Er:YAG ...
Singh Harpal H National Botanical Research Institute (NBRI) , Council of Scientific and Industrial Research (CSIR), Rana Pratap Marg, Lucknow, 226001 Uttar Pradesh, - - 2014
Tomatoes are one of the most consumed crops in the whole world because of their versatile importance in dietary food as well as many industrial applications. They are also a rich source of secondary metabolites, such as phenolics and flavonoids. In the present study, we described a method to produce ...
Murata Toshihiro T Department of Pharmacognosy, Tohoku Pharmaceutical - - 2014
An extract of whole plants of Pycnanthemum flexuosum showed an inhibitory effect on hyaluronidase activity. From an 80% acetone extract of aerial parts, 3-[(3E)-4-phenylbut-3-enoylamino]propionic acid, 3-O-β-D-glucuronopyranosyl- echinocystic acid 28-O-β-D-xylopyranosyl-(1→3)-[3,4-diacetyl-β-D-xylopyranosyl- (1→4)]-a-L-rhamnopyranosyl-(1→2)-a-L-arabinopyranosyl ester, vanillic acid 1-O-[(5-O-syringoyl)-β-D-apiofuranosyl]-(1→2)-β-D-glucopyranoside, and (4S,5R)-4-hydroxy-5-phenyl-tetrahydrofuran-2-one were isolated together with 30 known compounds. Six known compounds were isolated from an ...
Zhang Luan L School of Resource and Environmental Sciences, Wuhan University, Wuhan, Hubei 430079, PeopleÎ│s Republic of - - 2014
The roots of metallophytes serve as the key interface between plants and heavy metal-contaminated underground environments. It is known that the roots of metallicolous plants show a higher activity of acid invertase enzymes than those of non-metallicolous plants when under copper stress. To test whether the higher activity of acid ...
Dalir Neda N Department of Soil Science, College of Agriculture, Isfahan University of Technology, 84154 Isfahan, - - 2014
This study investigated the effect of exogenous amino acids on apoplastic and symplastic uptake and root to shoot translocation of nickel (Ni) in two wheat cultivars. Seedlings of a bread (Triticum aestivum cv. Back Cross) and a durum wheat cultivar (T. durum cv. Durum) were grown in a modified Johnson ...
Pouyet Frédéric F Grenoble INP-Pagora, The International School of Paper Print Media and Biomaterials, 461 rue de la papeterie - CS 10065, 38402 St Martin d'Hères Cedex, France. Electronic address: - - 2014
The formation of carbonyl groups during the ozone treatment (Z) of eucalyptus (Eucalyptus grandis and Eucalyptus urophylla hybrid) kraft pulps and their behaviors during subsequent alkaline stages were investigated by the CCOA method with carbazole-9-carboxylic acid [2-(2-aminooxethoxy)-ethoxy] amide (CCOA) as the carbonyl-selective fluorescence label. Several pulp samples with or without ...
Huang Yijing Y Department of Clinical Nutrition, Shanghai No.9 People's Hospital, Shanghai Jiaotong University School of Medicine, 639 Zhizhaoju Road, Shanghai, - - 2014
Periodontal diseases represent the most common chronic inflammatory diseases in humans and a major cause of tooth loss. Combining mass spectrometry-based ionomics and a targeted lipidomics on fatty acids metabolites, we identified significant alterations in redox status and fatty acids metabolism in saliva in response to chronic inflammation and oxidative ...
Wu Xingyuan - - 2014
The evolution of rice straw char reactivity during reaction with NO was examined in differential reactor at 900 and 1000 °C. Original and acid-washed rice straw chars were used. Surface area and mineral content of char samples with different conversion were analyzed. The reactivity of the acid-washed char increased until ...
Eversole Sandra L SL The Procter & Gamble Company, Mason, OH, - - 2014
To investigate the relative erosion protection potential of marketed dentifrices formulated with either stabilised stannous fluoride (SnF2 ), sodium fluoride (NaF) and/or sodium monofluorophosphate (SMFP) using an established laboratory erosion cycling model. Sound enamel cores from extracted, human enamel were cleaned, ground and polished, soaked in pooled saliva (pellicle formation) ...
Faller Robert V RV Kornberg School of Dentistry, Temple University, Philadelphia, PA, - - 2014
To assess the potential of a stabilised stannous (Sn)-containing NaF dentifrice (Oral B/blend-a-Med(®) Pro-Expert), in addition to a number of other marketed European dentifrices formulated with various fluoride actives and two control dentifrices, to protect enamel against erosive acid damage. Cores of human enamel (four per group) were soaked in ...
Baig Arif A AA The Procter & Gamble Company, Mason, OH, - - 2014
To compare the ability of two active ingredients - sodium fluoride (NaF) and stannous fluoride (SnF2 ) - to inhibit hydroxyapatite (HAP) dissolution in buffered acidic media. Two in vitro studies were conducted. HAP powder, which is representative of tooth mineral, was pretreated with: test solutions of NaF or SnF2 ...
Shokouhinejad Noushin N Associate Professor, Dental Research Center Dentistry Research Institute, Department of Endodontics, School of Dentistry Tehran University of Medical Sciences, Tehran, - - 2014
The aim of this study was to compare the effect of an acidic environment on dislocation resistance (push-out bond strength) of EndoSequence Root Repair Material (ERRM putty and ERRM paste), a new bioceramic-based material, to that of mineral tri-oxide aggregate (MTA). One-hundred twenty root dentin slices with standardized canal spaces ...
Feitosa Victor P VP Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil; King's College London Dental Institute, London, United Kingdom. Electronic address: - - 2014
To evaluate the effects of acidic functional monomers with different hydrophilicity and spacer carbon chain length on the degree of conversion (DC), wettability (contactangle), water sorption (WS) and ultimate tensile strength (UTS) of experimental one-step self-etch adhesives (1-SEAs). A series of standard resin blends was prepared with each formulation containing ...
Passos Vanara F VF 1 Post-graduation Program, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará , Brazil - - 2014
Abstract Objective: This in vitro study aimed to evaluate the effect of a low intensity diode laser (λ=808 nm; 60 J/cm(2)) associated with stannous fluoride on the inhibition of dentin erosion by assessing percentage of superficial hardness loss (%SHL) and calcium release into the acid solution. Materials and methods: Human root dentin ...
Zhu Jia Jun JJ Research postgraduate student, Paediatric Dentistry and Orthodontics, Faculty of Dentistry, the University of Hong Kong, Hong Kong - - 2014
The laboratory-based enamel acid-etching doctrine with 30% to 50% phosphoric acid for 60 seconds to generate the maximum amount of Type 1 and/or Type 2 etch pattern has been established for more than 30 years. However, this recommendation may not be clinically relevant. The purpose of this systematic review was ...
Kulichikhin Konstantin K Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, - - 2014
Formation of a barrier to radial oxygen (O2 ) loss (ROL) in the root is an important adaptation of plants to root flooding, but the biochemical changes in plant roots where the barrier is formed are unclear. In this study, we analyzed metabolic profiles and gene expression profiles in roots ...
Ravikumar J J Department of Conservative Dentistry & Endodontics, Drs. S & NR Siddhartha Institute of Dental Sciences, Chinaoutpally, Gannavaram, Andhra Pradesh, - - 2014
To evaluate the effect of EDTA, Maleic acid, Citric acid and MTAD Irrigating Solutions on the shear bond Strength of A-H plus sealer. Forty mandibular single rooted premolar teeth with straight roots were taken, decoronated and instrumented using Protaper rotary instruments to size #F3, 0.09 taper, at the working length, ...
Koecher Katie J - - 2014
Gut bacteria ferment fiber at different rates to primarily short chain fatty acids (SCFA) and gas while proteins are metabolized to SCFA, branched chain fatty acids (BCFA), gas, and undesirable metabolites. Large volumes of gas produced in vivo may contribute to bloating and flatulence in an individual. The objectives of ...
Memarpour Mahtab - - 2014
Purpose: To evaluate microleakage from an antibacterial adhesive and bonding agent added to the ssure sealant on intact enamel. Materials and Methods: One hundred twenty sound third mandibular molars were randomly divided into 6 groups of 20 teeth each. Occlusal pits and ssures were sealed with un lled sealant material ...
Elkassas Dina D Assistant Professor at Department of Restorative Dentistry, Faculty of Oral and Dental Medicine, Misr International University, - - 2014
To assess enamel remineralization of different calcium-phosphate and fluoride delivery systems. Artificial caries lesions were created on 115 extracted human molars. Specimens assigned according to remineralizing agent into five groups: G1: Control (artificial saliva), G2: Clinpro™ white varnish, G3: Relief, G4: Tooth Mousse Plus, G5: Vanish(XT)TM. Surface micro-hardness (SMH), surface ...
Lim Chee Shan CS Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore. pumera@ntu.edu.sg - - 2014
Well-defined graphene nanosheets have become increasingly popular in the electrochemical detection and quantification of small molecules. In this work, the electrochemical oxidation of biomarkers such as uric acid, ascorbic acid, dopamine, NADH and DNA bases, namely guanine and adenine, was performed using cyclic voltammetry and differential pulse voltammetry to compare ...
Saghiri Mohammad Ali MA Department of Ophthalmology & Visual Sciences, and Biomedical Engineering, University of Wisconsin, Madison, Wisconsin, - - 2014
To evaluate the effect of storage pH on solubility of white mineral trioxide aggregate (WMTA), bioaggregate (BA), and nano WMTA cements. Forty-eight moulds randomly allocated into three groups of pH 4.4 (group A), 7.4 (group B), and 10.4 (group C); and one empty as control in each group. Each group ...
Díaz-Monroy Jennifer Manuela JM 0000-0002-7419-9310 Facultad de Odontología, Centro de Investigación y Estudios Avanzados en Odontología (CIEAO), Universidad Autónoma del Estado de México, Jesús Carranza Esq. Paseo Tollocan, Col. Universidad, 50130 Toluca, MEX, - - 2014
Background. An increase in the acid resistance of dental enamel, as well as morphological and structural changes produced by Er:YAG laser irradiation, has been reported. Purpose. To evaluate the chemical changes associated with acid resistance of enamel treated with Er:YAG laser. Methods. Forty-eight enamel samples were divided into 4 groups ...
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