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MTA study

John T Mitchell, Andrea L Howard, Katherine A Belendiuk, Traci M Kennedy, Annamarie Stehli, James M Swanson, Lily Hechtman, L Eugene Arnold, Betsy Hoza, Benedetto Vitiello, Bo Lu, Scott H Kollins, Brooke S G Molina
Introduction: Children with attention-deficit/hyperactivity disorder (ADHD) are at increased risk for smoking cigarettes, but there is little longitudinal research on the array of smoking characteristics known to be prognostic of long-term smoking outcomes into adulthood. These variables were studied into early adulthood in a multi-site sample diagnosed with ADHD combined-type at ages 7-9.9 and followed prospectively alongside an age- and sex-matched local normative comparison group (LNCG)...
March 12, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
Jorge Henrique Stefaneli Marques, Yara Teresinha Corrêa Silva-Sousa, Fuad Jacob Abi Rached-Júnior, Luciana Martins Domingues de Macedo, Jardel Francisco Mazzi-Chaves, Josette Camilleri, Manoel Damião Sousa-Neto
The aim of this study was to evaluate the bond strength of different triccalcium silicate cements to retrograde cavity using a push out test. Thirty maxillary central incisors were shaped using #80 hand files and sectioned transversally. Root slices were obtained from the apical 4 mm after eliminating the apical extremity. The specimens were embedded in acrylic resin and positioned at 45° to the horizontal plane for preparation of root-end cavities with a diamond ultrasonic retrotip. The samples were divided into three groups according to the root-end filling material (n = 10): MTA Angelus, ProRoot MTA and Biodentine...
March 8, 2018: Brazilian Oral Research
Simon Jonas Enkirch, Andreas Traschütz, Andreas Müller, Catherine N Widmann, Gerrit H Gielen, Michael T Heneka, Alina Jurcoane, Hans H Schild, Elke Hattingen
Purpose To establish and evaluate a visual score focused on entorhinal cortex atrophy (ERICA), as the entorhinal cortex is one of the first brain structures affected in Alzheimer disease (AD). Materials and Methods In this retrospective study, ERICA was visually evaluated with magnetic resonance imaging (2009-2016). First, a four-point ERICA score was developed by using data in 48 consecutive subjects (20 patients with AD and 28 control subjects). Then, in the main analysis, ERICA and the standard medial temporal lobe atrophy (MTA) scores were determined in an independent cohort of 60 patients suspected of having AD (mean age, 69...
March 7, 2018: Radiology
F Tirone, S Salzano, A Piattelli, V Perrotti, G Iezzi
OBJECTIVES: The aim of this study was to investigate for the first time the histological response of periodontium to mineral trioxide aggregate (MTA) and Biodentine in human experimental models. MATERIALS AND METHODS: Six patients scheduled for implant full-arch rehabilitation via the all-on-4 technique were randomly assigned to one of the two test groups: either to MTA or Biodentine treatment. For each patient, 2 teeth scheduled for strategic extraction were randomly assigned either to the test or to the control treatment...
March 6, 2018: Australian Dental Journal
Seok Woo Chang
Chemical composition and porosity characteristics of calcium silicate-based endodontic cements are important determinants of their clinical performance. Therefore, the aim of this study was to investigate the chemical composition and porosity characteristics of various calcium silicate-based endodontic cements: MTA-angelus, Bioaggregate, Biodentine, Micromega MTA, Ortho MTA, and ProRoot MTA. The specific surface area, pore volume, and pore diameter were measured by the porosimetry analysis of N2 adsorption/desorption isotherms...
2018: Bioinorganic Chemistry and Applications
G L Dou, N Wu, S Y Zhao, B Xia
OBJECTIVE: To evaluate the two-year outcomes of primary molars pulpotomy using mineral trioxided aggregate (MTA) and to find out the potential influence factor, with the help of electronic medical record database. METHODS: Children who received primary molars pulpotomy in the Department of Pediatric Dentistry in Peking University School and Hospital of Stomatology from May, 2014 to November, 2015 were searched in the Electronic Medical Record Database of Peking University School and Hospital of Stomatology, via the database for scientific research provided by the corporation of Kaientai...
February 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
K X Xie, Y G Li, P Zhang, X Wang
OBJECTIVE: To evaluate the effect of acid etching of retropreps on seal of different retrofill materials. METHODS: In the study, 80 freshly extracted lower molar teeth were used. They were examined under 3.5× magnifying glass to rull out fractures. They were cleaned and stored in distilled water before use. The distal roots were sectioned off and underwent root canal treatment. Rotary nickel-titanium instruments were used during instrumentation and the roots were obturated using lateral condensation technique...
February 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Omid Dianat, Fatemeh Mashhadiabbas, Zohreh Ahangari, Sara Saedi, Saeed Reza Motamedian
Previous in vitro studies have suggested that simvastatin can be used as a direct pulp capping material due to its ability to induce odontoblastic differentiation and angiogenesis. The aim of this animal study was to evaluate the pulpal response to mineral trioxide aggregate (MTA) and four concentrations of simvastatin/MTA in combination. The study was conducted in two stages using four different simvastatin concentrations and MTA as a capping material for rat maxillary molars. The grades of inflammation and continuity of dentin formation were evaluated in hematoxylin and eosin (HE)-stained samples...
February 26, 2018: Journal of Oral Science
Selen Küçükkaya Eren, Peter Parashos
This systematic review analysed the literature comparing marginal adaptation of mineral trioxide aggregate (MTA) with other filling materials in root-end cavities. The PubMed, Ovid, Web of Science, SCOPUS, and Cochrane library databases were searched using appropriate keywords related to root-end filling materials and adaptation. Of 38 articles assessed, 20 met the inclusion criteria. No in vivo study was identified. In 10 studies, MTA gave the best marginal adaptation results, but no significant differences were found between MTA and any of the tested filling materials in seven studies...
February 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
Cyrielle Fischbach-Boulanger, Aikaterini Fitsiori, Vincent Noblet, Seyyid Baloglu, Hélène Oesterle, Silviu Draghici, Nathalie Philippi, Emmanuelle Duron, Olivier Hanon, Jean-Louis Dietemann, Frédéric Blanc, Stéphane Kremer
BACKGROUND: MR imaging is part of the diagnostic criteria for Alzheimer's disease through the evaluation of hippocampal atrophy. The objective of this study is to evaluate which sequence between T1 Weighted Imaging (T1WI) and T2 Weighted Imaging (T2WI) allows the best visual evaluation of hippocampal atrophy. METHODS: Visual qualitative ratings of the hippocampus of 100 MCI and 50 AD patients were made independently by four operators according to the Medial Temporal lobe Atrophy (MTA) score based either on T1WI or T2WI...
February 14, 2018: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
Amber A Miller, Koyo Takimoto, James Wealleans, Anibal Diogenes
INTRODUCTION: There is a complex interaction between biomaterials placed as a coronal barrier with stem cells and dentin in regenerative procedures. In this study, the effect of Biodentine (BD; Septodont, Saint-Maurdes-Fossés, France), Endosequence BC Root Repair Material-Putty (ES; Brasseler, Savannah, GA), Endosequence BC Root Repair Material-Putty Fast set (ES-fast, Brasseler), and ProRoot (Dentsply Tulsa Dental Specialties, Johnson City, TN) mineral trioxide aggregate (MTA) on the viability and differentiation of stem cells of the apical papilla (SCAP) was evaluated using an ex vivo dentin disk model...
February 6, 2018: Journal of Endodontics
Leandro Borges Araújo, Leopoldo Cosme-Silva, Ana Paula Fernandes, Thais Marchini de Oliveira, Bruno das Neves Cavalcanti, João Eduardo Gomes Filho, Vivien Thiemy Sakai
The aim of the study was to evaluate the effects of the capping materials mineral trioxide aggregate (MTA), calcium hydroxide (CH) and BiodentineTM (BD) on stem cells from human exfoliated deciduous teeth (SHED) in vitro. SHED were cultured for 1 - 7 days in medium conditioned by incubation with MTA, BD or CH (1 mg/mL), and tested for viability (MTT assay) and proliferation (SRB assay). Also, the migration of serum-starved SHED towards conditioned media was assayed in companion plates, with 8 μm-pore-sized membranes, for 24 h...
February 1, 2018: Journal of Applied Oral Science: Revista FOB
Amin Salem-Milani, Saeede Ghasemi, Saeed Rahimi, Amir Ardalan-Abdollahi, Mohammad Asghari-Jafarabadi
Background: The aim of this study was to evaluate the discoloration induced by CEM cement, Portland cement (PC) and MTA mixed with propylene glycol (MTA-PG) in comparison to White MTA. Material and Methods: Ninety extracted premolar and canine teeth were resected 2 mm below the CEJ. The coronal part of crown was prepared with peeso reamer and Gates-Glidden drills, and the specimens were randomly divided into 4 experimental (n=20) and one control (n=10) groups. The tooth crowns in experimental groups 1 to 4 were filled with White MTA, PC, CEM cement and MTA-PG, respectively; and in group 5, the teeth were kept empty...
December 2017: Journal of Clinical and Experimental Dentistry
Hideto Joki, Yuichi Higashiyama, Yoshiharu Nakae, Chiharu Kugimoto, Hiroshi Doi, Katsuo Kimura, Hitaru Kishida, Naohisa Ueda, Tatsu Nakano, Tatsuya Takahashi, Shigeru Koyano, Hideyuki Takeuchi, Fumiaki Tanaka
BACKGROUND: In dementia with Lewy bodies (DLB) and Parkinson's disease with dementia (PDD), it is still debated whether white matter hyperintensities (WMH) on MRI reflect atherosclerotic cerebrovascular changes or Alzheimer's disease (AD)-related pathology such as cerebral amyloid angiopathy. To examine AD-related pathology in DLB and PDD, we compared the severity of WMH and medial temporal lobe atrophy among patients with DLB, PDD, non-demented PD (PDND), and AD. METHODS: We retrospectively studied sex- and age-matched outpatients with AD, DLB, PDD, and PDND, as well as subjects without central nervous system disorders as normal controls (n=50 each)...
February 15, 2018: Journal of the Neurological Sciences
Aline S Andrade, Guilherme F Silva, Josette Camilleri, Estela S Cerri, Juliane M Guerreiro-Tanomaru, Paulo S Cerri, Mário Tanomaru-Filho
INTRODUCTION: The aim of the present study was to evaluate the inflammatory response induced by experimental tricalcium silicate cement with 20% zirconium oxide (TSC) and MTA Plus (MTAP; Avalon Biomed Inc, Bradenton, FL) in rat subcutaneous tissues. METHODS: Polyethylene tubes were filled with TSC (n = 20) and MTAP (n = 20) and implanted in the dorsal subcutaneous tissues of 32 rats. Empty tubes were used as the control (control group [CG], n = 20). After 7, 15, 30, and 60 days, the tubes with connective tissue were removed, and the inflammatory cells and immunolabeled cells for interleukin 6 (IL-6) were counted...
February 2, 2018: Journal of Endodontics
Mira Kebudi Benezra, Pierre Schembri Wismayer, Josette Camilleri
INTRODUCTION: The stability and long-term success of root canal obturation depends on the choice of sealer because the sealer bonds to the dentin and stabilizes the solid cone. Furthermore, the sealer needs to be nontoxic because sealer toxicity will certainly lead to treatment failure. The aim of this study was to assess the sealer-dentin interface of 3 hydraulic root canal sealers and to evaluate their cytocompatibility compared with AH Plus (Dentsply DeTrey GmbH, Konstanz, Germany)...
February 2, 2018: Journal of Endodontics
Neeraj Choudhary, Vanya Bawa, Rajneesh Paliwal, Bikram Singh, Mohd Ashraf Bhat, Javid Iqbal Mir, Moni Gupta, Parvaze A Sofi, Mahendar Thudi, Rajeev K Varshney, Reyazul Rouf Mir
Common bean (Phaseolus vulgaris L.) is one of the most important grain legume crops in the world. The beans grown in north-western Himalayas possess huge diversity for seed color, shape and size but are mostly susceptible to Anthracnose disease caused by seed born fungus Colletotrichum lindemuthianum. Dozens of QTLs/genes have been already identified for this disease in common bean world-wide. However, this is the first report of gene/QTL discovery for Anthracnose using bean germplasm from north-western Himalayas of state Jammu & Kashmir, India...
2018: PloS One
Bor-Shiunn Lee, Hong-Ping Lin, Jerry Chun-Chung Chan, Wei-Chuan Wang, Ping-Hsuan Hung, Yu-Hsin Tsai, Yuan-Ling Lee
Mineral trioxide aggregate (MTA) is the most frequently used repair material in endodontics, but the long setting time and reduced mechanical strength in acidic environments are major shortcomings. In this study, a novel sol-gel-derived calcium silicate cement (sCSC) was developed using an initial Ca/Si molar ratio of 3, with the most effective mixing orders of reactants and optimal HNO3 catalyst volumes. A Fourier transform infrared spectrometer, scanning electron microscope with energy-dispersive X-ray spectroscopy, and X-ray powder diffractometer were used for material characterization...
2018: International Journal of Nanomedicine
Shilpa Shetty, Geeta Hiremath, Mahantesh Yeli
Aim of the Study: The aim of this study was to compare and evaluate the sealing ability of four root end filling materials mineral trioxide aggregate (MTA)-Plus, Biodentine, MTA (MTA Angelus) and glass ionomer cement (GIC) using fluid filtration method. Materials and Methods: Forty-four extracted, human single-rooted teeth were collected. The crown of each tooth was decoronated 2 mm above the cementoenamel junction. Canals were negotiated, instrumented, obturated using lateral compaction method...
September 2017: Journal of Conservative Dentistry: JCD
Fatih Tulumbaci, Merve Erkmen Almaz, Volkan Arikan, Merve Safa Mutluay
Significance of Study: Mineral trioxide aggregate (MTA) and Biodentine (calcium silicate-based materials) have great importance in dentistry. There is no study comparing the bond strength of Biodentine and MTA for composite, compomer, and compomer or resin-modified glass ionomer (RMGIC). Although many advantages of Biodentine over MTA; in this study, MTA has shown better shear bond strength (SBS) to restorative materials. Aim: Recently, a variety of calcium silicate-based materials are often used for pulp capping, perforation repair, and endodontic therapies...
September 2017: Journal of Conservative Dentistry: JCD
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