نتایج جستجو برای: having different materials and thicknesses

تعداد نتایج: 16989241  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و علوم انسانی 1391

‘romanticism’ and ‘romantic’ are among the most controversial terms in literature. most readers, when encountering these words, would think of the well-known period of romanticism of the first three decades of the nineteenth century and the great six english poets known as ‘the big six’ of this period. however, romanticism does not belong to certain artists in a special period; one may seek ele...

Journal: :مجله دانشکده دندانپزشکی مشهد 0
سیّد مصطفی سیّد مصطفی معظّمی seyedmostafa moazzami assistant professor, dept. of operative dentistry,dental school, mashhad university of medical sciences, mashhad, i.r.iranاستادیار گروه ترمیمی و زیبائی دانشکده دندانپزشکی دانشگاه علوم پزشکی مشهد نونا نونا عطّاران nona attaran dentistدندانپزشکسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)

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Journal: :Journal of oral science 2015
Bilal Yasa Ebru Kucukyilmaz Elif Yasa Elif T Ertas

This study investigated the radiopacity values of glass ionomer- and resin-based bulk-fill restoratives of different thicknesses using digital radiography. Two glass ionomer-based and three resin-based bulk-fill restoratives, and a conventional composite were studied. Five disc-shaped specimens were prepared from each of these materials at three different thicknesses; specimens of enamel and de...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده ادبیات و زبانهای خارجی 1393

the purpose of this study was to find the relationship between critical thinking and self-regulation with reading comprehension of iranian female elementary language learners. the present study is a correlational one having a descriptive design. two questionnaires, critical thinking questionnaire and self-regulation questionnaire which were valid and reliable questionnaires and four reading com...

Introduction: Development of higher energy modalities such as positron emission tomography/computed tomography (PET/CT), has led to more complex shielding problems. This is due to several factors, such as the radiopharmaceutical relatively high-administered activity, high patient throughput, and high energies of 511 kilo-electron volt (keV) positron annihilation photon...

Ramin Tabari, Shahroz Almasi, Shiva Sadeghi,

Introdouction: It is important for the clinician to be aware regarding the necessary thickness of materials used as intra-orifice coronal barriers to prevent microleakage. The purpose of this in vitro study was to compare coronal microleakage of three different thicknesses of white and gray Angelus mineral trioxide aggregate (WAMTA, GAMTA). Materials and methods: A total of 66 canals of extrac...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1372

in this study reference as one of the five cohesive devices in the achievement of textuality in english and persian narrative/descripitive written texts is focused on and analysed . to do so , the theoretical framework elaborated by halliday and hasan (1976) and its version adapted by the writer to match the sub-types of reference in farsi are applied to the analysis of reference in english and...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1389

oxidative addition reactions of 1,4-diiodo-butane and 1,3-diiodo-propane with [ptme2(ph2phen)]; in which ph2phen=4,7-diphenyl-1,10-phenanthroline, were studied in different solvents such as acetone and benzene.oxidative addition reaction of [pt me2(ph2phen)] with i(ch2)4i and i(ch2)3i produced the [pt me2i(ch2)4(ph2phen)i] (1a) and [pt me2i(ch2)3(ph2phen)i] (1b).all the platinum (iv) products w...

Journal: :journal of dentistry, shiraz university of medical sciences 0
farideh darabi oromaxillofacial developmental disease research center, dept. of operative dentistry, school of dentistry, guilan university of medical sciences, rasht, iran. golpar radafshar oromaxillofacial developmental disease research center, dept. of periodontology, school of dentistry, guilan university of medical sciences, rasht, iran. maryam tavangar oromaxillofacial developmental disease research center, dept. of operative dentistry, school of dentistry, guilan university of medical sciences, rasht, iran. reza davaloo oromaxillofacial developmental disease research center, dept. of operative dentistry, school of dentistry, guilan university of medical sciences, rasht, iran. aref khosravian dentist, private practice, tehran, iran. nastaran mirfarhadi ms in nursing education, oromaxillofacial developmental disease research center, school of dentistry, guilan university of medical sciences, rasht, iran.

statement of the problem: optical properties of the composite resins, concerning their translucency and thickness, are affected by discolored tooth structure or inherent darkness of the oral cavity. purpose: this study aimed to compare the translucency parameter (tp) of five different composite resins in different thicknesses and to evaluate their masking ability in black backgrounds. materials...

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