OBJECTIVES This study examined the color changes of a resin composite with different shades upon exposure to water with different pH. MATERIALS AND METHODS Nanohybrid resin composites (Filtek Z350XT, 3M ESPE) with four different shades (A2, A3, B1, and B2) were immersed in water with three different pH (pH 3, 6, and 9) for 14 day. The CIE L*a*b* color coordinates of the specimens were evaluat...

Objective:  To evaluate in vitro the flexural strength of two newer composite resin materials .  Material and Methods:  Twenty-four samples were equally divided into groups: G1 - Brilliant EverGlow G2: NG. The rectangular blocks 25 mm length, 2 width thickness prepared from materials. Blocks created by applying composites to a customized split mold formed between parallel glass plates. Before l...

In the present study, facile and synergistic approach for electrochemical sensing of paracetamol (PA) drug was demonstrated by hydrothermally synthesized copper oxide-copper ferrite nanohybrid composite supported on reduced graphene oxide (CuO-CuFe 2 O 4 @rGO) glassy carbon electrode. The surface texture structural information electrode material were examined FE-SEM, HR-TEM, X-ray diffraction t...

Changes in the organic matrix of composite resins have been proposed to improve their surface properties. However, polishing systems may perform differently different materials. This study compared effect on roughness four containing resin monomers: Admira Fusion (nanohybrid pure ormocer), Aura Bulkfill Bis-GMA, UDMA), Charisma Diamond TCD-DI-HEA) and Vittra APS (nanofilled UDMA). Cylinders (N ...

INTRODUCTION Preventive resin restorations (PRR) are the conservative choice for the most common carious lesions in children. Thus, new age flowable resin composites with higher filler content are readily used. The aim of this study was to evaluate the microshear bond strength and microleakage of two flowable resin composites containing different percentages of nano zinc oxide (NZnO) particles,...

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...

The objective of this study was to use nanohybrid Curcumin Cur-ZnO and Cur-MgO as well free curcumin detect, isolate, characterize, inhibit the development certain yeasts locally isolated from some spoilage foods. Yeasts responsible for spoiling were recovered in 21 different colonies cheese, cooked pickles, fig jam, apple dates, rice, canned chickpeas, dried figs. Nine yeast isolates chosen fu...

Objectives: The aim of this study was to evaluate the structural microporosity (MP) and marginal gap (MG) different flowable composite resins placed with instruments using micro-computed tomography (μCT). 
 Materials Methods: Standard Class II MOD cavities were prepared on 108 lower third molar teeth. Three resins; Filtek Bulk-fill, SDR Bulk-fill I-Flow conventional resin applied a sharp e...