Ricardo Walter

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PURPOSE To evaluate the shear bond strength (SBS) of a novel low-shrink posterior resin composite (Filtek LS) to various substrates. METHODS The dedicated LS System Adhesive was used to bond Filtek LS to bovine dentin, ground bovine enamel, resin-modified glass-ionomer liner (Vitrebond Plus), conventional glass-ionomer restorative material (Fuji IX GP(More)
PURPOSE The purpose of this study was to evaluate the microtensile bond strength (muTBS) of two dual-cured resin cements and a glass ionomer cement to coronal dentin versus root dentin. MATERIALS AND METHODS RelyX Unicem (3M ESPE, St. Paul, MN, USA) and Panavia F (Kuraray Medical Inc., Tokyo, Japan) were the resin cements used and FujiCEM (GC Corp.,(More)
OBJECTIVES This study measured resin/dentin bond strengths and evaluated gap formation at the pulpal floor of occlusal composite restorations using a flowable resin as a liner with either bulk or incremental placement of the restorative composite. METHODS Class I occlusal preparations were made in 16 extracted molars, and were randomly divided into two(More)
PURPOSE To evaluate enamel bond strengths of self-etching primer systems with and without the use of phosphoric acid etching. MATERIALS AND METHODS The enamel of sixteen bovine incisors was ground with wet 600-grit SiC paper, and specimens were divided into seven groups. Group SE and group ABF were bonded with Clearfil SE Bond (Kuraray) and an(More)
UNLABELLED statement of problem:  Self-etch adhesives typically are mildly acidic and therefore less effective than etch-and-rinse adhesives for bonding to enamel. PURPOSE   The purpose of this study was to evaluate the enamel and dentin shear bond strengths of a new two-step self-etch adhesive system, OptiBond XTR (Kerr Corporation, Orange, CA, USA). (More)
OBJECTIVES This study evaluated the antibacterial potential of four different adhesive systems. METHODS & MATERIALS Gluma Comfort Bond + Desensitizer, Gluma Comfort Bond, iBond and One-Up Bond F were tested against Streptococcus mutans, Streptococcus sobrinus, Lactobacillus acidophilus and Actinomyces viscosus. The inhibition of growth by calibrated(More)
OBJECTIVES To test the long-term in vitro bonding performance of "all-in-one" self-etch adhesives to dentine. METHODS Adper Prompt (3M ESPE), Bond Force (Tokuyama), Brush & Bond (Parkell), iBond Self Etch (Heraeus Kulzer), OptiBond All-In-One (Kerr), and Xeno IV (Dentsply Caulk) were tested. The two-step self-etch adhesive Clearfil SE Bond (Kuraray)(More)
OBJECTIVE To determine whether temperature affects the polymerization shrinkage of composite resin. METHOD AND MATERIALS Volumetric shrinkage of a microfill composite was measured using a video-imaging device. The material was cooled to 4 degrees C or heated to 37 degrees C, 54 degrees C, or 68 degrees C. Room-temperature (20 degrees C) composite was used(More)
Recent developed flowable composite resins have been marketed for bulk filling of preparations or replacement of dentin in a single increment. The obvious attraction of these materials-quicker placement of restorations-has rapidly made them very popular despite the limited in vitro data and lack of clinical studies. This Critical Appraisal will review some(More)
OBJECTIVES The aim of the present study was to determine the antibacterial properties of three resin-based pit and fissure sealant products: Clinpro (3M ESPE), Embrace (Pulpdent), and UltraSeal XT plus (Ultradent). METHODS The antibacterial effects of the sealants were tested in both an agar diffusion assay and a planktonic growth inhibition assay using(More)