OBJECTIVES This study examined the influence of the resin thickness on the polymerization of silorane- and methacrylate-based composites. MATERIALS AND METHODS One silorane-based (Filtek P90, 3M ESPE) and two methacrylate-based (Filtek Z250 and Z350, 3M ESPE) composite resins were used. The number of photons were detected using a photodiode detector at the different thicknesses (thickness, 1,...

Objective: This study aimed to investigate the impact of artificial aging on color stability and hardness nanocomposite resin. Methods: Four resin materials were used: Filtek Z350 XT (FZ), Synergy D6 (SD), Grandio (GD), Clearfil Majesty Esthetic (CM). Thirty specimens created from each material, which divided into three (A,B,C) groups 10 each. For values visual lightness (L*), degree redness gr...

Bulk-fill restorative material has gained popularity in clinical practice, due to their perceived timesaving aspect. Objective was compare the properties of bulk-fill direct materials. Filtek Z350 (CR), One Bulk Fill Restorative (BF), Fuji IX and EQUIA Forte (EF) were compared. Thirty specimens from each prepared according ISO 4049 for three-point flexural strength. Elastic moduli hardness (n =...

The main aim of the present in-vitro study is to assess effect daily consumable drinks on aesthetics dental composite resin materials. Sixty-four microhybrid and nanohybrid direct (3M™ Filtek™ Z350 XT Universal Restorative, Bulk Fill Flowable USA) block samples were made with a dimension 15mm X 2mm are allocated into four groups. Each sample was immersed in test media such as Arabic coffee, bla...

BACKGROUND Dental composites are one of the most desired restorative materials today. Composite materials can be bonded successfully to human tooth enamel; however, developing the same degree of adhesion to dentin or cementum is a more challenging task. Polymerization contraction stress of dental composites is often associated with marginal and interfacial failures of bonded restorations. The m...

OBJECTIVES Nanofilled composite resins are claimed to provide superior mechanical properties compared with microhybrid resins. Thus, the aim of this study was to compare nanofilled with microhybrid composite resins. The null hypothesis was that the size and the distribution of fillers do not influence the mechanical properties of surface roughness and wear after simulated toothbrushing test. ...

INTRODUCTION This study evaluated the fluorescence intensity (FI) of different brands of composite resins (CRs) and compare those values with the FI of human tooth, under the action of cigarette smoke (CI), coffee (CA), and soft drink (CO), measured by direct spectrometry. MATERIALS AND METHODS A total of 30 specimens of each brand (Filtek Z350, Esthet-X, Amelogen, Durafill) were made. Others...

This study was carried out to verify if composites could be bleached using chlorine dioxide as compared with hydrogen peroxide. 3M ESPE Filtek Z350 Universal Restorative discs were prepared (n=40), with dimensions 5 mm diameter x 2 mm thickness. The discs were divided into 4 groups of 10 discs each. Color assessment was performed by CIEDE2000. The discs were stained with coffee, tea, wine and d...

This study sought to assess the use of chlorhexidine with several excipients as a dentin surface treatment and its effect on marginal adaptation of class V restorations with current-generation dentin bonding agents. A total of 120 human third molars were selected and allocated into 12 groups, with standardized buccal class V restorations randomly divided into preconditioned dentin rinsed with: ...

The fracture resistance (R-curve behaviour) of two commercial dental composites (Filtek Z350(®) and Concept Advanced(®)) were studied using Double Cantilever Beam sandwich specimens loaded with pure bending moments to obtain stable crack growth. The experiments were conducted in an environmental scanning electron microscope to (a) accurately measure the applied energy-release rate for crack ini...