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OBJECTIVES To distinguish the physical properties of a new silorane-based restorative material in comparison to five methacrylate-based restorative materials--a compomer, giomer, nanocomposite, hybrid and micro-hybrid. METHODS The following properties were examined per restorative material: compressive strength, diametral tensile strength, flexural(More)
OBJECTIVE New fluoride varnishes have been marketed that reportedly release more fluoride (Enamel Pro) or release fluoride more slowly (Vanish XT). The purpose of this study was to compare the amount and rate of fluoride release of new fluoride varnishes with other traditional fluoride varnishes. METHOD AND MATERIALS Extracted molars were cut into block(More)
INTRODUCTION Study models are an essential part of an orthodontic record. Digital models are now available. One option for generating a digital model is cone-beam computed tomography (CBCT) scanning of orthodontic impressions and bite registrations. However, the accuracy of digital measurements from models generated by this method has yet to be thoroughly(More)
OBJECTIVES The purpose of this study was to measure the polymerization shrinkage of three dental resin composites using two commercially available video-imaging devices to determine if the devices produced equivalent results. METHODS Small, semi-spherical specimens of a microhybrid (Venus), microfill (Filtek A110), and flowable (Esthet*X Flow) resin(More)
BACKGROUND Elucidating the microstructural responses of the lithium disilicate system like the popular IPS e.max® CAD (LS2), made specifically for computer-aided design and computer-aided manufacturing (CAD-CAM), as a temperature-dependent system unravels new ways to enhance material properties and performance. OBJECTIVE To study the effect of various(More)
OBJECTIVE This study evaluated the effect of preparation utilization and design, and addition of resin composite to the bonding interface, on the fracture resistance of reattached incisal fragments. METHOD AND MATERIALS Sixty bovine incisors were distributed among 1 control group and 5 experimental groups. Experimental specimens were sectioned 3.0 mm from(More)
OBJECTIVES The purpose of this study was to determine the minimal extent of cure required by the base of a Class 2 resin composite restoration (Z250, 3M ESPE, St Paul, MN, USA) that allows it to support the rest of the restoration and maintain its marginal seal under simulated clinical conditions. METHODS Resin composite (Z250, 3M ESPE, St Paul, MN, USA)(More)
PURPOSE Mechanical spatulation of alginate impression materials reportedly produces fewer voids and superior casts than hand mixing. Two current methods of alginate mechanical preparation are a vacuum mixer Vac-U-Vestor, (Whip Mix Corp, Louisville, KY) and a semiautomated method that involves hand spatulation in a rotating bowl Alginator II (Cadco, Oxnard,(More)
BACKGROUND A randomized block, split-mouth design was used to determine the effectiveness of a vibratory device with topical anesthetic compared to topical anesthetic only in reducing the pain experienced during an inferior alveolar nerve block. METHODS Twenty participants each received two inferior alveolar injections with a 5-minute interval between(More)