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MTA study

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https://www.readbyqxmd.com/read/29336880/marginal-gaps-between-2-calcium-silicate-and-glass-ionomer-cements-and-apical-root-dentin
#1
Vladimir Biočanin, Đorđe Antonijević, Srđan Poštić, Dragan Ilić, Zorica Vuković, Marija Milić, Yifang Fan, Zhiyu Li, Božidar Brković, Marija Đurić
INTRODUCTION: The outcome of periapical surgery has been directly improved with the introduction of novel material formulations. The aim of the study was to compare the retrograde obturation quality of the following materials: calcium silicate (Biodentine; Septodont, Saint-Maur-des-Fosses, France), mineral trioxide aggregate (MTA+; Cerkamed Company, Stalowa Wola, Poland), and glass ionomer cement (Fuji IX; GC Corporation, Tokyo, Japan). METHODS: Materials' wettability was calculated concerning the contact angles of the cements measured using a glycerol drop...
January 12, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29315559/substance-use-through-adolescence-into-early-adulthood-after-childhood-diagnosed-adhd-findings-from-the-mta-longitudinal-study
#2
Brooke S G Molina, Andrea L Howard, James M Swanson, Annamarie Stehli, John T Mitchell, Traci M Kennedy, Jeffery N Epstein, L Eugene Arnold, Lily Hechtman, Benedetto Vitiello, Betsy Hoza
BACKGROUND: Inconsistent findings exist regarding long-term substance use (SU) risk for children diagnosed with attention-deficit/hyperactivity disorder (ADHD). The observational follow-up of the Multimodal Treatment Study of Children with ADHD (MTA) provides an opportunity to assess long-term outcomes in a large, diverse sample. METHODS: Five hundred forty-seven children, mean age 8.5, diagnosed with DSM-IV combined-type ADHD and 258 classmates without ADHD (local normative comparison group; LNCG) completed the Substance Use Questionnaire up to eight times from mean age 10 to mean age 25...
January 8, 2018: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29314393/global-cerebral-atrophy-detected-by-routine-imaging-relationship-with-age-hippocampal-atrophy-and-white-matter-hyperintensities
#3
Omar M Al-Janabi, Pradeep Panuganti, Erin L Abner, Ahmed A Bahrani, Ronan Murphy, Shoshana H Bardach, Allison Caban-Holt, Peter T Nelson, Brian T Gold, Charles D Smith, Donna M Wilcock, Gregory A Jicha
BACKGROUND AND PURPOSE: Interpreting the clinical significance of moderate-to-severe global cerebral atrophy (GCA) is a conundrum for many clinicians, who visually interpret brain imaging studies in routine clinical practice. GCA may be attributed to normal aging, Alzheimer's disease (AD), or cerebrovascular disease (CVD). Understanding the relationships of GCA with aging, AD, and CVD is important for accurate diagnosis and treatment decisions for cognitive complaints. METHODS: To elucidate the relative associations of age, moderate-to-severe white matter hyperintensities (WMHs), and moderate-to-severe medial temporal lobe atrophy (MTA), with moderate-to-severe GCA, we visually rated clinical brain imaging studies of 325 participants from a community based sample...
January 5, 2018: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/29306530/evaluation-of-biocompatibility-and-osteogenic-potential-of-tricalcium-silicate-based-cements-using-human-bone-marrow-derived-mesenchymal-stem-cells
#4
Neha Sultana, Manisha Singh, Ruchika Roongta Nawal, Sarika Chaudhry, Seema Yadav, Sujata Mohanty, Sangeeta Talwar
INTRODUCTION: The success of endodontic regeneration lies in the appropriate combination of stem cells and bioactive materials. Several novel dental materials are available on the market in this regard. Hence, the current study aimed to evaluate the proliferation, differentiation, and osteogenic potential of human bone marrow-derived mesenchymal stem cells (hBMSCs) onto biomaterials like ProRoot MTA (MTA; Dentsply Tulsa Dental, Tulsa, OK), Biodentine (BD; Septodont, Saint Maur de Fosses, France), and EndoSequence Root Repair Material (ERRM; Brasseler USA, Savannah, GA)...
January 3, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29306529/comparison-of-gap-volume-after-retrofilling-using-4-different-filling-materials-evaluation-by-micro-computed-tomography
#5
Sue Youn Kim, Hyeon-Cheol Kim, Su-Jung Shin, Euiseong Kim
INTRODUCTION: The purpose of this study was to evaluate the gap volume between dentin and root-end filling materials. METHODS: Four root-end filling materials were compared in the present study: ProRoot MTA (PRM; Dentsply Tulsa Dental, Tulsa, OK), MTA Angelus (MAG; Angelus, Londrina, Brazil), EndoCem MTA (ECM; Maruchi, Wonju, Korea), and RetroMTA (RTM; BioMTA, Seoul, Korea). Forty-eight single-rooted, extracted human teeth were instrumented with nickel-titanium instruments and oburated with gutta-percha...
January 3, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29302286/management-of-permanent-teeth-with-necrotic-pulps-and-open-apices-according-to-the-stage-of-root-development
#6
Hugo Plascencia, Mariana Díaz, Gerardo Gascón, Susana Garduño, Carlos Guerrero-Bobadilla, Salvador Márquez-De Alba, Geovani González-Barba
Background: This paper analyzed the distribution of treatments for permanent teeth with necrotic pulps and open apices according to the stage of root development. Material and Methods: Dental records from all root canal procedures performed in permanent teeth with necrotic pulps and open apices over a period of 14 years by residents of the Speciality of Endodontics, University of Guadalajara, Mexico, were analized. Results: Records from 206 treatments were mainly divided into the following 3 different stages according to criteria described by Cvek: stage IV (n = 79, 38...
November 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29290183/comparison-of-retrograde-primary-and-secondary-bonding-materials-with-tooth-substance
#7
Tabinda Nawaz Khan, Syed Yawar Ali Abidi
OBJECTIVE: To compare the microleakage of MTA (mineral trioxide aggregate) and resin-modified GIC (glass ionomer vitremer) as retrograde endodontic material. STUDY DESIGN: Experimental study. PLACE AND DURATION OF STUDY: Operative Department of DIIKIOHS (DUHS) and NED University, Karachi, from February to June 2014. METHODOLOGY: Forty human anterior teeth were divided into four groups. Each tooth was endodontically treated...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29288401/x-ray-diffraction-analysis-of-mta-mixed-and-placed-with-various-techniques
#8
F B Basturk, Mohammad Hossein Nekoofar, M Gunday, P M H Dummer
OBJECTIVES: The aim of this study was to evaluate the effect of various mixing techniques as well as the effect of ultrasonic placement on hydration of mineral trioxide aggregate (MTA) using X-ray diffraction (XRD) analysis. MATERIALS AND METHODS: One gram of ProRoot MTA and MTA Angelus powder was mixed with a 0.34-g of distilled water. Specimens were mixed either by mechanical mixing of capsules for 30 s at 4500 rpm or by manual mixing followed by application of a compaction pressure of 3...
December 29, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29284950/effect-of-biomineralization-ability-on-push-out-strength-of-proroot-mineral-trioxide-aggregate-mineral-trioxide-aggregate-branco-and-calcium-phosphate-cement-on-dentin-an-in-vitro-evaluation
#9
Vanita D Revankar, M S Prathap, K Harish Kumar Shetty, Azmin Shahul, K Sahana
Context: Biomineralization is a process which leads to the formation of an interfacial layer with tag-like structures at the cement-dentin interface. It is due to interaction of mineral trioxide aggregate (MTA) and Portland cement with dentin in phosphate-buffered solution (PBS). This study is aimed to evaluate the effect of influence of biomineralization process on push-out bond strength of ProRoot MTA (Dentsply Tulsa Dental, Tulsa, OK, USA), MTA Branco (Angelus Soluc¸o˜es Odontolo´gicas, Londrina, PR, Brazil) and calcium phosphate cement (BioGraft CPC)...
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29284531/cerebrovascular-and-amyloid-pathology-in-predementia-stages-the-relationship-with-neurodegeneration-and-cognitive-decline
#10
Isabelle Bos, Frans R Verhey, Inez H G B Ramakers, Heidi I L Jacobs, Hilkka Soininen, Yvonne Freund-Levi, Harald Hampel, Magda Tsolaki, Åsa K Wallin, Mark A van Buchem, Ania Oleksik, Marcel M Verbeek, Marcel Olde Rikkert, Wiesje M van der Flier, Philip Scheltens, Pauline Aalten, Pieter Jelle Visser, Stephanie J B Vos
BACKGROUND: Cerebrovascular disease (CVD) and amyloid-β (Aβ) often coexist, but their influence on neurodegeneration and cognition in predementia stages remains unclear. We investigated the association between CVD and Aβ on neurodegenerative markers and cognition in patients without dementia. METHODS: We included 271 memory clinic patients with subjective or objective cognitive deficits but without dementia from the BioBank Alzheimer Center Limburg cohort (n = 99) and the LeARN (n = 50) and DESCRIPA (n = 122) multicenter studies...
December 29, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/29283996/genome-wide-association-study-and-genetic-diversity-analysis-on-nitrogen-use-efficiency-in-a-central-european-winter-wheat-triticum-aestivum-l-collection
#11
István Monostori, Fruzsina Szira, Alessandro Tondelli, Tamás Árendás, Krisztián Gierczik, Luigi Cattivelli, Gábor Galiba, Attila Vágújfalvi
To satisfy future demands, the increase of wheat (Triticum aestivum L.) yield is inevitable. Simultaneously, maintaining high crop productivity and efficient use of nutrients, especially nitrogen use efficiency (NUE), are essential for sustainable agriculture. NUE and its components are inherently complex and highly influenced by environmental factors, nitrogen management practices and genotypic variation. Therefore, a better understanding of their genetic basis and regulation is fundamental. To investigate NUE-related traits and their genetic and environmental regulation, field trials were evaluated in a Central European wheat collection of 93 cultivars at two nitrogen input levels across three seasons...
2017: PloS One
https://www.readbyqxmd.com/read/29279572/reactions-of-human-dental-pulp-cells-to-capping-agents-in-the-presence-or-absence-of-bacterial-exposure
#12
Shiwei Cai, Wenjian Zhang, Gena Tribble, Wei Chen
An ideal pulp-capping agent needs to have good biocompatibility and promote reparative dentinogenesis. Although the effects of capping agents on healthy pulp are known, limited data regarding their effects on bacterial contaminated pulp are available. This study aimed to evaluate the reaction of contaminated pulps to various capping agents to assist clinicians in making informed decisions. Human dental pulp (HDP) cell cultures were developed from extracted human molars. The cells were exposed to a bacterial cocktail comprising Porphyromonas gingivalis, Prevotella intermedia, and Streptococcus gordonii before being cocultured with capping agents such as mineral trioxide aggregate (MTA) Portland cement (PC), and Dycal...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/29275850/outcomes-of-direct-pulp%C3%A2-capping-by-using-either-proroot-mineral-trioxide-aggregate-or-biodentine-in-permanent-teeth-with-carious-pulp-exposure-in-6-to-18-year-old-patients-a-randomized-controlled-trial
#13
Nuttaporn Parinyaprom, Areerat Nirunsittirat, Patchanee Chuveera, Sakarat Na Lampang, Tanida Srisuwan, Thanapat Sastraruji, Puangporn Bua-On, Sophon Simprasert, Issaraporn Khoipanich, Thitida Sutharaphan, Suthida Theppimarn, Narumol Ue-Srichai, Waritorn Tangtrakooljaroen, Papimon Chompu-Inwai
INTRODUCTION: This study aimed to compare the success rates of direct pulp capping (DPC) by using either ProRoot Mineral Trioxide Aggregate (MTA) or Biodentine in the cariously exposed permanent teeth of 6- to 18-year-old patients. Gray discoloration was also evaluated. METHODS: Fifty-nine cariously exposed permanent teeth, including teeth with diagnosis of normal pulp, reversible pulpitis, or irreversible pulpitis, early periapical involvement, and exposure size of up to 2...
December 21, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29274535/in%C3%A2-vitro-effects-of-virgin-microplastics-on-fish-head-kidney-leucocyte-activities
#14
Cristóbal Espinosa, José María García Beltrán, María Angeles Esteban, Alberto Cuesta
Microplastics are well-documented pollutants in the marine environment that result from production or fragmentation of larger plastic items. The knowledge about the direct effects of microplastics on immunity, including fish, is still very limited. We investigated the in vitro effects of microplastics [polyvinylchloride (PVC) and polyethylene (PE)] on gilthead seabream (Sparus aurata) and European sea bass (Dicentrarchus labrax) head-kidney leucocytes (HKLs). After 1 and 24 h of exposure of HKLs with 0 (control), 1, 10 and 100 mg mL-1 MPs in a rotatory system, cell viability, innate immune parameters (phagocytic, respiratory burst and peroxidase activities) and the expression of genes related to inflammation (il1b), oxidative stress (nrf2, prdx3), metabolism of xenobiotics (cyp1a1, mta) and cell apoptosis (casp3) were studied...
December 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29261125/rheological-characterization-as-an-alternative-method-to-indentation-for-determining-the-setting-time-of-restorative-and-endodontic-cements
#15
William N Ha, Timothy M Nicholson, Bill Kahler, Laurence J Walsh
This study explored an alternative approach using rheology to assess setting time. The following cements were tested: ProRoot® MTA (Dentsply, Tulsa, OK, USA), Biodentine® (Septodont, Saint Maur des Fosses, France), Fuji VII®, FujiVII® EP, and Fuji IX® (from GC Corporation, Tokyo, Japan), RealSeal SE™ Sealer (SybronEndo, Amersfoort, The Netherlands), AH 26® and AH Plus (both from Dentsply DeTrey, Konstanz, Germany). Freshly mixed cements were placed into a strain-controlled rheometer (1 rad·s-1 with an applied strain of 0...
December 20, 2017: Materials
https://www.readbyqxmd.com/read/29258562/leishmania-infantum-5-methylthioadenosine-phosphorylase-presents-relevant-structural-divergence-to-constitute-a-potential-drug-target
#16
Hela Abid, Emna Harigua-Souiai, Thouraya Mejri, Mourad Barhoumi, Ikram Guizani
BACKGROUND: The 5'-methylthioadenosine phosphorylase (MTAP), an enzyme involved in purine and polyamine metabolism and in the methionine salvage pathway, is considered as a potential drug target against cancer and trypanosomiasis. In fact, Trypanosoma and Leishmania parasites lack de novo purine pathways and rely on purine salvage pathways to meet their requirements. Herein, we propose the first comprehensive bioinformatic and structural characterization of the putative Leishmania infantum MTAP (LiMTAP), using a comparative computational approach...
December 19, 2017: BMC Structural Biology
https://www.readbyqxmd.com/read/29246250/posterior-atrophy-predicts-time-to-dementia-in-patients-with-amyloid-positive-mild-cognitive-impairment
#17
Jung-Min Pyun, Young Ho Park, Hang-Rai Kim, Jeewon Suh, Min Ju Kang, Beom Joon Kim, Young Chul Youn, Jae-Won Jang, SangYun Kim
BACKGROUND: In patients with amyloid-positive mild cognitive impairment (MCI), neurodegenerative biomarkers such as medial temporal lobe atrophy (MTA) are useful to predict disease progression to dementia. Although posterior atrophy (PA) is a well-known neurodegenerative biomarker of Alzheimer's disease, little is known about PA as a predictor in patients with amyloid-positive MCI. METHODS: We included 258 patients with amyloid-positive MCI with at least one follow-up visit, and who had low cerebrospinal fluid (CSF) β-amyloid1-42 concentration...
December 16, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/29243186/effect-of-root-canal-sealers-on-human-periodontal-ligament-fibroblast-viability-ex-vivo-study
#18
Grzegorz Szczurko, Małgorzata Pawińska, Elżbieta Łuczaj-Cepowicz, Anna Kierklo, Grażyna Marczuk-Kolada, Adam Hołownia
The aim of the study was to compare ex vivo the toxic effects of six root canal sealers immediately after mixing or setting on human periodontal ligament fibroblasts (HPdLF). Freshly mixed (I group) or set (allowed to dry for 24 h) (II group) specimens of AH Plus Jet (AH), Apexit Plus (AP), MTA Fillapex (FL), GuttaFlow (GF), MetaSEAL Soft (META), and Tubli-Seal (TS) were prepared. HPdLF were exposed for 24 h to the specimens. 3-(4,5-dimethylthiazolo-2-yl)-2,5-diphenyltetrazolium bromide assay was used to examine the effect of the root canal sealers on mitochondrial metabolic activity...
December 14, 2017: Odontology
https://www.readbyqxmd.com/read/29238376/the-effect-of-different-root-canal-sealers-on-the-fracture-resistance-of-endodontically-treated-teeth-in-vitro-study
#19
Anuve Hrishi Phukan, Shivani Mathur, Meera Sandhu, Vinod Sachdev
Background: The aim of this study was to compare the in vitro effects of four different root canal sealers on the fracture resistance of endodontically treated teeth. Materials and Methods: Seventy-five freshly extracted human mandibular premolars were used for the study. Teeth were divided into five groups based on type of root canal sealers used. Gutta-percha was used for all the samples: Group I: AH Plus root canal sealer, Group II: MTA Fillapex root canal sealer, Group III: Apexit root canal sealer, Group IV: Conventional zinc oxide-eugenol (ZOE) sealer, Group V: Control (unobturated teeth)...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29232874/alkaline-material-effects-on-roots-of-teeth
#20
REVIEW
Sowmya Shetty, Sam L Kahler, Bill Kahler
The aim of this review was to identify and analyse all studies related to the effects of alkaline materials used in dentistry on roots of teeth. The first part of the review focused on mechanical property alterations of root dentine due to sodium hypochlorite (SH) used as an irrigant solution based on MeSH (Medical Subject Heading) terms from a previous study by Pascon et al in 2009. The second part reviewed literature on calcium hydroxide (CH), mineral trioxide aggregate (MTA) and other alkaline materials used as root canal dressings or filling materials...
December 10, 2017: Materials
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