19 results match your criteria groups pmta

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Effect of exposure to root canal irrigants on the push-out bond strength of calcium silicate-based cements.

Clin Oral Investig 2021 May 28;25(5):3267-3274. Epub 2020 Oct 28.

Departamento de Odontología Conservadora y Prótesis Bucofacial, Facultad de Odontología, Universidad Complutense de Madrid, Pza. Ramón y Cajal, s/n. Ciudad Universitaria, 28040, Madrid, Spain.

Objectives: The aim of this study was to compare the push-out bond strength (POBS) of three calcium silicate-based cements (CSBC) after exposure to saline, sodium hypochlorite (NaOCl), ethylenediaminetetraacetic acid (EDTA), and a mixture of NaOCl and etidronic acid (NaOCl+HEBP) in simulated perforation.

Materials And Methods: A total of 180 dentin slices were perforated and then filled with either Biodentine (BD), ProRoot MTA (PMTA), or Total Fill (TF). After 1 week, specimens in each group were divided into 4 subgroups (n = 15) according to the root canal irrigant (RCI) that their coronal surface was exposed to: saline, 5. Read More

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Effects of four novel root-end filling materials on the viability of periodontal ligament fibroblasts.

Restor Dent Endod 2018 Aug 25;43(3):e24. Epub 2018 May 25.

Department of Endodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey.

Objectives: The aim of this study was to evaluate the biocompatibility of newly proposed root-end filling materials, Biodentine, Micro-Mega mineral trioxide aggregate (MM-MTA), polymethylmethacrylate (PMMA) bone cement, and Smart Dentin Replacement (SDR), in comparison with contemporary root-end filling materials, intermediate restorative material (IRM), Dyract compomer, ProRoot MTA (PMTA), and Vitrebond, using human periodontal ligament (hPDL) fibroblasts.

Materials And Methods: Ten discs from each material were fabricated in sterile Teflon molds and 24-hour eluates were obtained from each root-end filling material in cell culture media after 1- or 3-day setting. hPDL fibroblasts were plated at a density of 5 × 10/well, and were incubated for 24 hours with 1:1, 1:2, 1:4, and 1:8 dilutions of eluates. Read More

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[Surgical Options for Refractory Heart Failure Patients with Non-ischemic Dilated Cardiomyopathy].

Kyobu Geka 2018 Jul;71(7):484-487

Department of Cardiovascular and Thoracic Surgery, Hokkaido University, Sapporo, Japan.

Surgical strategy for non-ischemic dilated cardiomyopathy (NIDCM) is currently controversial. Subjects were 20 patients who underwent left ventriculoplasty(LVP) from 2006 to 2013 and 6 patients who underwent papillary muscle tugging approximation (PMTA) after 2015. PMTA is a new trans-mitral approach combined with valve replacement without left ventriculotomy. Read More

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Tooth discoloration effects of calcium silicate based barrier materials used in revascularization and treatment with internal bleaching.

J Dent Sci 2017 Dec 9;12(4):347-353. Epub 2017 May 9.

Selcuk University, Faculty of Dentistry, Department of Endodontics, Konya, Turkey.

Background/purpose: Usage of barrier materials is an important step in revascularization procedure. One of the undesired properties of these barrier materials is to cause coronal tooth discoloration. The aim of this study was to evaluate the tooth discoloration induced by ProRoot MTA (PMTA), Biodentine, and MM-MTA, as well as the efficacy of internal bleaching on this discoloration. Read More

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December 2017

Effect of Sodium Hypochlorite on Push-out Bond Strength of Four Calcium Silicate-based Endodontic Materials when used for repairing Perforations on Human Dentin: An in vitro Evaluation.

Authors:
Sara A Alsubait

J Contemp Dent Pract 2017 Apr 1;18(4):289-294. Epub 2017 Apr 1.

Department of Restorative Dental Science, College of Dentistry King Saud University, Riyadh, Kingdom of Saudi Arabia, e-mail:

Aim: This study aimed to evaluate the push-out bond strength of NeoMTA Plus (NMTA), EndoSequence root repair material fast set putty (ERRMF), biodentine (BD), and ProRoot white mineral trioxide aggregate (PMTA) when used as perforation repair materials after exposure to 2.5% sodium hypochlorite (NaOCl) during the early setting phase.

Materials And Methods: Horizontal midroot sections were prepared from single-rooted human teeth. Read More

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The effect of human blood on the setting and surface micro-hardness of calcium silicate cements.

Clin Oral Investig 2016 Nov 23;20(8):1997-2005. Epub 2015 Dec 23.

Microscope Center, Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea.

Objectives: The purpose of the present study was to evaluate the effects of human blood on the setting and microhardness of calcium silicate cements.

Materials And Methods: Three types of silicate-based cements were used: ProRoot MTA (PMTA), OrthoMTA (OMTA), and RetroMTA (RMTA). Mixed cement was placed into polyethylene molds with lengths of 2 and 4 mm. Read More

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November 2016

'Effects of novel root repair materials on attachment and morphological behaviour of periodontal ligament fibroblasts: Scanning electron microscopy observation'.

Microsc Res Tech 2016 Dec 20;79(12):1214-1221. Epub 2016 Sep 20.

Department of Endodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey.

The aim of this study was to evaluate the adhesion of periodontal ligament fibroblasts (PDLs) on newly proposed root repair materials [Biodentine, MM-MTA, polymethylmethacrylate (PMMA) bone cement, and SDR], in comparison with contemporary root repair materials [IRM, Dyract compomer, ProRoot MTA (PMTA), and Vitrebond]. Five discs from each material were fabricated in sterile Teflon molds, and the specimens were aged and prewetted in cell culture media for 96 hours. Three material discs were used for scanning electron microscopy (SEM) for the assessment of the attachment, density, and morphological changes in the PDLs, while two samples were used for energy dispersive x-ray spectroscopy (SEM-EDX) to determine the elemental composition of the materials. Read More

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December 2016

A Comparison of the Discoloration Potential for EndoSequence Bioceramic Root Repair Material Fast Set Putty and ProRoot MTA in Human Teeth: An In Vitro Study.

J Esthet Restor Dent 2017 Feb 17;29(1):59-67. Epub 2016 Sep 17.

Dental intern, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.

Objective: To compare the discoloration potential of Endosequence Bioceramic Root Repair Material fast set putty (ERRMF) and ProRoot MTA (PMTA) when placed coronally in human extracted teeth over a 4-month period.

Methodology: Forty-eight premolars were sectioned 2 mm below the cementoenamel junction. The pulp chambers were cleaned chemo-mechanically. Read More

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February 2017

A comparative evaluation of ProRoot mineral trioxide aggregate and Portland cement as a pulpotomy medicament.

J Indian Soc Pedod Prev Dent 2016 Apr-Jun;34(2):172-6

Department of Pedodontics and Preventive Dentistry, RKDF Dental College and Research Centre, Bhopal, Madhya Pradesh, India.

Introduction: Recently, some studies have compared mineral trioxide aggregate (MTA) with portland cement (PC), concluding that the principle ingredients of PC are similar to those of MTA. The purpose of the present study was to evaluate the biocompatibility of PC as a pulpotomy medicament.

Materials And Methods: Thirty premolars that scheduled for extraction for therapeutic reasons were randomly assigned to two experimental groups: ProRoot MTA (PMTA) and PC. Read More

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Bond strength of composite resin to pulp capping biomaterials after application of three different bonding systems.

J Dent Res Dent Clin Dent Prospects 2013 30;7(3):152-6. Epub 2013 Aug 30.

Associate Professor, Department of Operative Dentistry, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Background and aims. Bonding of composite resin filling materials to pulp protecting agents produces an adhesive joint which is important for the quality of filling as well as success of restoration. We aimed to assess the bond strength of composite resin to three pulp capping biomaterials: Pro Root mineral trioxide aggregate (PMTA), Root MTA (RMTA) and calcium enriched mixture (CEM) cement, using three bonding systems [a total-etch (Single Bond) and two self-etch systems (Protect bond and SE Bond)]. Read More

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October 2013

Legionella bozemanae synthesizes phosphatidylcholine from exogenous choline.

Microbiol Res 2011 Feb 24;166(2):87-98. Epub 2010 Mar 24.

Department of Genetics and Microbiology, Institute of Microbiology and Biotechnology, Maria Curie-Sklodowska University, Akademicka St. 19, PL 20-033 Lublin, Poland.

The phospholipid class and fatty acid composition of Legionella bozemanae were determined using thin-layer chromatography, gas-liquid chromatography, and matrix-assisted laser desorption ionization-time of flight mass spectrometry. Phosphatidylcholine, phosphatidylethanolamine, and diphosphatidylglycerol were the predominant phospholipids, while phosphatidyl-N-monomethylethanolamine, phosphatidylglycerol, and phosphatidyl-N,N-dimethylethanolamine were present at low concentrations. With the use of the LC/MS technique, PC16:0/15:0, PC17:/15:0, and PE16:1/15:0 were shown to be the dominant phospholipid constituents, which may be taxonomically significant. Read More

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February 2011

Phosphatidylcholine levels of peanut-nodulating Bradyrhizobium sp. SEMIA 6144 affect cell size and motility.

FEMS Microbiol Lett 2010 Feb 3;303(2):123-31. Epub 2009 Dec 3.

Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, Córdoba, Argentina.

Phosphatidylcholine, the major phospholipid in eukaryotes, is found in rhizobia and in many other bacteria interacting with eukaryotic hosts. Phosphatidylcholine has been shown to be required for a successful interaction of Bradyrhizobium japonicum USDA 110 with soybean roots. Our aim was to study the role of bacterial phosphatidylcholine in the Bradyrhizobium-peanut (Arachis hypogaea) symbiosis. Read More

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February 2010

Expression and physiological relevance of Agrobacterium tumefaciens phosphatidylcholine biosynthesis genes.

J Bacteriol 2009 Jan 31;191(1):365-74. Epub 2008 Oct 31.

Microbial Biology, Ruhr-University Bochum, Bochum, Germany.

Phosphatidylcholine (PC), or lecithin, is the major phospholipid in eukaryotic membranes, whereas only 10% of all bacteria are predicted to synthesize PC. In Rhizobiaceae, including the phytopathogenic bacterium Agrobacterium tumefaciens, PC is essential for the establishment of a successful host-microbe interaction. A. Read More

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January 2009

Phosphatidylcholine synthesis is required for optimal function of Legionella pneumophila virulence determinants.

Cell Microbiol 2008 Feb 2;10(2):514-28. Epub 2007 Nov 2.

Department of Molecular Biology and Microbiology, Tufts University School of Medicine, 150 Harrison Avenue, Boston, MA 02111, USA.

The function of phosphatidylcholine (PC) in the bacterial cell envelope remains cryptic. We show here that productive interaction of the respiratory pathogen Legionella pneumophila with host cells requires bacterial PC. Synthesis of the lipid in L. Read More

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February 2008

Virulence of Agrobacterium tumefaciens requires phosphatidylcholine in the bacterial membrane.

Mol Microbiol 2006 Nov 29;62(3):906-15. Epub 2006 Sep 29.

Lehrstuhl für Biologie der Mikroorganismen, Ruhr-Universität Bochum, Bochum, Germany.

Phosphatidylcholine (PC, lecithin) has long been considered a solely eukaryotic membrane lipid. Only a minority of all bacteria is able to synthesize PC. The plant-transforming bacterium Agrobacterium tumefaciens encodes two potential PC forming enzymes, a phospholipid N-methyltransferase (PmtA) and a PC synthase (Pcs). Read More

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November 2006

Bacterial leakage of mineral trioxide aggregates and portland cement.

Iran Endod J 2006 1;1(3):93-6. Epub 2006 Oct 1.

General practitioner, Tehran, Iran.

Introduction: The purpose of this study was to compare the ability of ProRoot mineral trioxide aggregate (PMTA) and Root mineral trioxide aggregate (RMTA) as root-end filling materials, and Portland cement (PC) to prevent bacterial leakage through filled root end cavities.

Materials And Methods: Fifty-one extracted human single rooted teeth were cleaned and shaped using a step back technique. The root-ends were resected and a 4 mm deep root-end preparation was made with fissure bur. Read More

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January 2014

Synthesis of phosphatidylcholine, a typical eukaryotic phospholipid, is necessary for full virulence of the intracellular bacterial parasite Brucella abortus.

Cell Microbiol 2006 Aug;8(8):1322-35

Departamento de Microbiología, Universidad de Navarra, Pamplona, Spain.

Phosphatidylcholine (PC) is a typical eukaryotic phospholipid absent from most prokaryotes. Thus, its presence in some intracellular bacteria is intriguing as it may constitute host mimicry. The role of PC in Brucella abortus was examined by generating mutants in pcs (BApcs) and pmtA (BApmtA), which encode key enzymes of the two bacterial PC biosynthetic routes, the choline and methyl-transferase pathways. Read More

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Brucella abortus synthesizes phosphatidylcholine from choline provided by the host.

J Bacteriol 2006 Mar;188(5):1929-34

Instituto de Investigaciones Biotecnológicas, Universidad de Gral. San Martín (IIB-UNSAM), Av. Gral. Paz 5445, INTI, Ed. 24, 1650 San Martín, Buenos Aires, Argentina.

The Brucella cell envelope is characterized by the presence of phosphatidylcholine (PC), a common phospholipid in eukaryotes that is rare in prokaryotes. Studies on the composition of Brucella abortus 2308 phospholipids revealed that the synthesis of PC depends on the presence of choline in the culture medium, suggesting that the methylation biosynthetic pathway is not functional. Phospholipid composition of pmtA and pcs mutants indicated that in Brucella, PC synthesis occurs exclusively via the phosphatidylcholine synthase pathway. Read More

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[Sudden sensorineural hearing loss: a treatment protocol including glucocorticoids and hyperbaric oxygen therapy].

Otolaryngol Pol 2004 ;58(4):821-30

Katedra i Klinika Otolaryngologii AM w Gdańsku.

The aim of this study was to evaluate the efficacy of pharmacological treatment (corticosteroids, vasodilators, vitamins, Betaserc) combined with hyperbaric oxygen therapy (HBO) in the sudden sensorineural hearing loss (SSNHL). We reviewed 52 patients with SSNHL treated pharmacologically and with HBO (group A) between 1997 and 2000. All patients in this group received once daily, five days a week, 100% oxygen in a multiplace chamber under pressure of 2. Read More

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