نتایج جستجو برای: mta اندازه ذرات

تعداد نتایج: 96904  

Journal: :Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics 2008
Clóvis Monteiro Bramante Ana Claudia Cardoso Oliveira Demarchi Ivaldo Gomes de Moraes Norberti Bernadineli Roberto Brandão Garcia Lars S W Spångberg Marco Antonio Hungaro Duarte

OBJECTIVE The presence of arsenic in various types of mineral trioxide aggregate (MTA) and Portland cements were evaluated to verify if they comply with the ISO-recommended limit for water-based cements of 2 mg arsenic/kg material. STUDY DESIGN An amount of 5 mL of hydrochloric acid was added to 2 g each of MTA and Portland cement to be analyzed. After 15 minutes, the material was filtered an...

2018
Laura Siqueira Pintado Eliana do Nascimento Torre Maicon dos Santos Selayaran Rodrigo Varella de Carvalho Cesar Henrique Zanchi Fábio Renato Manzolli Leite Adriana Etges

Purpose The purpose of this study is to compare the physical, mechanical, and biocompatibility properties of a new dual-cure white mineral trioxide aggregate (D-W-MTA) and a commercial W-MTA. Materials and Methods Diametral tensile strength (DTS), water sorption (WSp), and water solubility (WSl) tests were performed. Cytotoxicity was observed in primary culture of human pulp fibroblasts (HPFs...

ژورنال: مجله دندانپزشکی 2007
افضلی‌فر, رز, خرازی‌فرد, محمدجواد, رزمی, حسن, شریفیان, محمدرضا, ضرابیان, محمد, قبادی, مهرنوش, همت‌زاده, فرهید,

Background and Aim: Mineral Trioxide Aggregate (MTA) is a material used in many endodontic problems. Recently a number of studies, have reported that Portland Cement (PC) and MTA have similar physical, chemical and biologic properties. In addition, a material known as Root MTA which is produced in Iran has been claimed to have similar properties to Pro Root MTA. If these claims are true, possib...

ژورنال: مجله دندانپزشکی 2018

Background and Aims: Microorganisms are the main cause of pulpal and periapical diseases. The most important failure factor is the lack of proper seals for the canal, resulting in microbial leakage. Therefore, the purpose of this study was to evaluate the sealing ability of ProRoot MTA and Bio MTA in canal obturation using fluid infiltration. Materials and Methods: In this experimental study, ...

2014
Beatriz Moreno Iciar Lopez Begoña Fernández-Díez Miroslav Gottlieb Carlos Matute María Victoria Sánchez-Gómez María Domercq Albert Giralt Jordi Alberch Kevin W. Collon Helen Zhang Jack M. Parent Meritxell Teixido Ernest Giralt Valentín Ceña Inmaculada Posadas Eva Martínez-Pinilla Pablo Villoslada Rafael Franco

BACKGROUND 5'-deoxy-5'-methylthioadenosine (MTA) is an endogenous compound produced through the metabolism of polyamines. The therapeutic potential of MTA has been assayed mainly in liver diseases and, more recently, in animal models of multiple sclerosis. The aim of this study was to determine the neuroprotective effect of this molecule in vitro and to assess whether MTA can cross the blood br...

Journal: :Brain : a journal of neurology 2009
E J Burton R Barber E B Mukaetova-Ladinska J Robson R H Perry E Jaros R N Kalaria J T O'Brien

The purpose of this study was to determine the diagnostic accuracy of medial temporal lobe atrophy (MTA) on MRI for distinguishing Alzheimer's disease from other dementias in autopsy confirmed cases, and to determine pathological correlates of MTA in Alzheimer's disease, dementia with Lewy bodies (DLB) and vascular cognitive impairment (VCI). We studied 46 individuals who had both antemortem MR...

لباف, دکتر حسین, نظری مقدم, دکتر کیومرث, هنردار, دکتر کیامرث,

In vitro Comparsion of Two Implanted Materials, Iranian (Root MTA) and Foreign (Pro Root – MTA), Regarding dye Microleakage of Furcation Perforation in Human Molar H. Labaf DDs , K. Nazari Moghadam DDs , K. Honardar DDs2 Received: 19/04/06 Sent for Revision: 12/07/06 Received Revised Manuscript: 15/03/07 Accepted: 17/03/07 Background and Objective: One of the great challenges in den...

Journal: :Journal of oral science 2015
Yakup Üstün Hüseyin S Topçuoğlu Firdevs Akpek Tuğrul Aslan

This study evaluated the retention characteristics of ProRoot mineral trioxide aggregate (MTA), RetroMTA, Supra MTA, and Biodentine biomaterials used to repair furcation perforations contaminated with blood. Furcal perforations measuring 1.3 mm in diameter and 2 mm in height were created in 96 mandibular first molar teeth, which were then randomly divided into the following two groups (n = 48):...

Journal: :Journal of endodontics 2010
Masoud Parirokh Mahmoud Torabinejad

INTRODUCTION Mineral trioxide aggregate (MTA) has been recommended for various uses in endodontics. Two previous publications provided a comprehensive list of articles from November 1993-September 2009 regarding the chemical and physical properties, sealing ability, antibacterial activity, leakage, and biocompatibility of MTA. The purpose of Part III of this literature review is to present a co...

Journal: :International journal of oral and maxillofacial surgery 2015
L G R deC Silva S H Kim S M Luczyszyn V Papalexiou A Giovanini L E Almeida V A Tramontina

This work focused on the process of bone repair of defects in standardized calvaria of Wistar rats treated with biphasic calcium phosphate (BCP), mineral trioxide aggregate (MTA), or a combination of the two. Eighty Wistar rats were divided into four treatment groups and were examined at 2 and 8 weeks. A surgical defect was created in the calvaria using a 6-mm diameter trephine drill. The cavit...

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