نتایج جستجو برای: filtek z350
تعداد نتایج: 772 فیلتر نتایج به سال:
Aims and Objectives To evaluate the influence of indirect chair-side polymerization of resin composite cores on the fracture resistance of overlaying IPS e.max Press crowns. Materials and Methods Root canals of 60 extracted premolars were prepared to receive #2 fiber posts after the crowns were sectioned 2 mm above the cervical line. In Groups 1-3 (n = 10 each), posts were luted to the prepar...
STATEMENT OF THE PROBLEM Composite resin may be used in different temperatures; it is crucial to determine the effect of temperature on mechanical properties of nanohybrid and silorane-based composite. PURPOSE This in vitro study compared the flexural strength and modulus of elasticity of nanohybrid and silorane-based resin composite, at 4˚C, room temperature (25˚C), and 45˚C. MATERIALS AND...
BACKGROUND With the increase in various resin-based composites with varying monomeric formulations and fi llers had led to a significant number of problems, and one of such is postoperative pain. Clinician is in a dilemma what to select and what not to. The latest nanocomposite is there for a short while that no individual research is available currently, hence, this study was undertaken. The a...
PURPOSE The purpose of this study was to evaluate the interfacial micromorphology of direct esthetic restorations bonded to primary or permanent tooth dentin with a self-etching primer adhesive system. METHODS Superficial dentin at the occlusal surface of 15 primary and 15 permanent molars was exposed with a carbide bur. Prompt-L-Pop was applied in one half of each surface. A control bonding ...
Background and Aims: Marginal seal in class V cavities and determining the best restorative material to decrease microleakage is of great importance in operative dentistry. The aim of this study was to evaluate the effect of polishing time on the microleakage of three types of tooth-colored restorative materials in class V cavity preparations and to assess the marginal integrity of these materi...
Background and Aims: Finishing and polishing of composites is a critical step influencing the clinical service of restorations. The aim of this article was to evaluate and compare the effect of two liquid polishes on the polish retention of two nanocomposites. Materials and Methods: Eighty standardized disk-shaped specimens (4×2 mm) were prepared from two nanocomposites (n=40), including one n...
STATEMENT OF PROBLEM Patients' demand for tooth-colored restoratives in the posterior region is increasing. Clinicians use universal nanohybrid resin composites for both anterior and posterior regions. There are few published reports comparing fracture toughness of nonohybrids and that of hybrid composite stored wet and dry. OBJECTIVES To investigate the fracture toughness of three nanohybrid...
This in vitro study investigated the aging behavior of dental composites with regard to surface roughness (SR), Vickers hardness (VH) and flexural strength (FS), and the study elucidated the impact of artificial aging parameters. One hundred and sixty-five rectangular specimens were prepared from five composites (Filtek Supreme XT, Filtek Silorane, CeramX, Quixfil, experimental ormocer) and sub...
Purpose: The polymerization of restorative materials has the potential to increase pulpal temperature and may result in damage health tissue. aim this study is investigate change primary teeth with two LED light-curing units (Valo Cordless®, EliparTM DeepCure-S) three groups (Filtek™ Bulk Fill Flowable, Filtek™ Z250 Universal Restorative empty cavity) by using a microcirculation model.
 Ma...
خلاصه: سابقه و هدف: محدودیت عمق کیور و تاثیر آن بر میزان پلیمریزاسیون از مشکلات کار با کامپوزیتهای نوری میباشد که عامل مهمی در شکست کلینیکی ترمیمهای کامپوزیتی است. یکی از راههای مقابله با آن استفاده از کامپوزیتهای بالک فیل معرفی شده اما تحقیقات تا کنون به نتیجه هماهنگی دست نیافتهاند لذا در این تحقیق به بررسی تاثیر ضخامت بر میزان پلیمریزاسیون سه نوع کامپوزیت بالک فیل و هیبرید در سال 1395 ...
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