نتایج جستجو برای: mta سفید

تعداد نتایج: 10376  

Journal: :Journal of neurology, neurosurgery, and psychiatry 2005
W M van der Flier E C W van Straaten F Barkhof J M Ferro L Pantoni A M Basile D Inzitari T Erkinjuntti L O Wahlund E Rostrup R Schmidt F Fazekas P Scheltens

OBJECTIVE To assess the associations of medial temporal lobe atrophy (MTA) and white matter hyperintensities (WMH) with cognitive function in a large group of independently functioning elderly people. METHODS Data were drawn from the multicentre, multinational leukoaraiosis and disability (LADIS) project which is studying prospectively the role of WMH as an independent predictor of the transi...

Journal: :Biomaterials 2004
Yuan-Ling Lee Bor-Shiunn Lee Feng-Huei Lin Ava Yun Lin Wan-Hong Lan Chun-Pin Lin

Utilizing scanning electron microscope, X-ray diffraction (XRD) and microhardness tests, we evaluated how various physiological environments affect the hydration behavior and physical properties of mineral trioxide aggregate (MTA). We found that the microstructure of hydrated MTA consists of cubic and needle-like crystals. The former comprised the principal structure of MTA, whereas the later w...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1992
P Scheltens D Leys F Barkhof D Huglo H C Weinstein P Vermersch M Kuiper M Steinling E C Wolters J Valk

Magnetic resonance imaging (MRI) has shown a great reduction in medial temporal lobe and hippocampal volume of patients with Alzheimer's disease as compared to controls. Quantitative volumetric measurements are not yet available for routine clinical use. We investigated whether visual assessment of medial temporal lobe atrophy (MTA) on plain MRI films could distinguish patients with Alzheimer's...

Journal: :ECS sensors plus 2023

The present work focuses on the synthesis of Fe 3 O 4 magnetite core@shell type nanoparticles modified with three types ligands: Magnetite activated carbon (MAC), silica (tetraethoxysilane, TEOS, and 3-aminopropyltriethoxysilane, APTES) (MTA) silica, APTES humic acids (MTAH). MTAH sample shows greater porosity in comparison to MTA, MAC samples. band gap is 4.08 eV, which higher than MTA (2.92 e...

2016
Kusai Baroudi Samah Samir

There were several materials used to seal different types of perforation defects. MTA is one of these restorative materials that is considered the most effective, biocompatible, non-toxic, and non-irritant; promote bone healing and cementum regeneration. The objective of this article was to review and summarize the sealing ability of MTA compared with the other materials used for sealing differ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1392

مقدمه در سراسر دوره زندگی یک دندان، بافت پالپ وایتال، تولید عاج ثانویه، عاج پری توبولار (اسکلروزیس) و عاج ترمیمی که در پاسخ به یک تحریک بیولوژیک و/ یا پاتولوژیک ایجاد می شود، را به عهده دارد .پالپ کپ یک راه درمانی است که در آن ماده حفاظتی روی پالپ اکسپوز شده قرارداده می شود تا به پالپ جهت حفظ وایتالیتی و فانکشن کمک کند. بنابراین، موفقیت درمان پالپ کپ به حفظ وایتالیتی پالپ و تشکیل سد عاجی وابس...

Journal: :Indonesian Journal of Chemistry 2023

The physical and antibacterial properties of mineral trioxide aggregate (MTA) have been improved by adding copper nanoparticles (CuNP). CuNP colloid was synthesized reacting CuCl2·2H2O NaBH4 as the reducing agent using C6H8O6 capping agent. Cu(II) concentration varied 3.0, 6.0, 9.0 mM to produce CuNP-3, CuNP-6, CuNP-9 colloids, respectively. colloids were characterized with a UV-Vis spectrophot...

2017
Emre Bayram H Melike Bayram Elif Tekin

A number of root-repair materials have been developed by various manufacturers, including Mineral Trioxide Aggregate (MTA) that has adequate biological and physical properties of a good root repair material [1,2]. MTA has been used for apexification, perforation repair, root resorption, and as a root-end filling material. The main ingredients of MTA are silicate oxide, tricalcium oxide, tricalc...

Journal: :Journal of oral science 2008
Jun-Beom Park Jeong-Heon Lee

Mineral trioxide aggregate (MTA) has shown potential as a root-end filling material. This clinical case describes the successful treatment of a premolar with an open apex using MTA and the warm gutta-percha technique. The results suggested that MTA may be used as an apical filling material in permanent teeth with multiple canals.

2017
Hadi Mokhtari Sara Jafarizadeh Hamid Reza Mokhtari Zonouzi Mehrdad Lotfi Mohammad Forough Reyhani Aydin Sohrabi

INTRODUCTION Mineral trioxide aggregate (MTA) can be used in the treatment of irritated vital pulp and repair of root perforations. However, the initial reaction of inflammatory cells to this material and also its setting time are not ideal. Studies have shown that disodium hydrogen phosphate (DHP), decreases the setting time of MTA, with no effect on its pH. This study was undertaken to evalua...

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