pa href=http://www.hubmed.org/fulltext.cgi?uids=22337700J Dent Res/a. 2012 Feb 15; brKitasako Y, Sadr A, Hamba H, Ikeda M, Tagami JpThe aim of this study was to assess the effect of chewing gum containing phosphoryl oligosaccharides of calcium (POs-Ca) and a low concentration of fluoride (F) on the hardness of enamel subsurface lesions, utilizing a double-blind, randomized, and controlled … Continue reading »
Evaluation of resin composite polymerization by three dimensional micro-CT imaging and nanoindentation.
pa href=http://www.hubmed.org/fulltext.cgi?uids=21820729Dent Mater/a. 2011 Aug 4; brCho E, Sadr A, Inai N, Tagami JpOBJECTIVES: Light-cured composites undergo shrinkage during polymerization. The aim of this study was to evaluate regional shrinkage within a light-cured composite during polymerization by microcomputed tomography and mechanical properties by nanoindentation in bonded or non-bonded class-I cavity. METHODS: Zirconium oxide spherical fillers … Continue reading »
CO2 laser improves 45S5 bioglass interaction with dentin.
J Dent Res. 2011 Feb; 90(2): 246-50Bakry AS, Takahashi H, Otsuki M, Sadr A, Yamashita K, Tagami J Bioglass 45S5 is a bioactive glass that can create a layer of calcium-phosphate crystals on mineralized hard tissues. In this study, 45S5 bioglass was mixed with phosphoric acid and irradiated with CO(2) laser and examined as a … Continue reading »
Effect of double-application of three single-step self-etch adhesives on dentin bonding and mechanical properties of resin-dentin area.
Oper Dent. 2009 Nov-Dec; 34(6): 716-24Wei S, Shimada Y, Sadr A, Tagami J This study investigated whether double-application influences the bond strength of single-step self-etch adhesives and the mechanical properties of the resin-dentin area.Three single-step self-etch adhesives (EXL-683, experimental, 3M ESPE; Clearfil Tri-S Bond, Kuraray Medical; G BOND, GC) were applied on dentin surfaces by … Continue reading »
The viscoelastic behavior of dental adhesives: a nanoindentation study.
Dent Mater. 2009 Jan; 25(1): 13-9Sadr A, Shimada Y, Lu H, Tagami J In order to predict the long-term performance of dental adhesives, it is necessary to understand their mechanical properties. The objective of this study was to use a new nanoindentation technique to characterize the in-plane linear viscoelastic properties of dental adhesive layers.The dental … Continue reading »
Effect of caries-affected dentin hardness on the shear bond strength of current adhesives.
J Adhes Dent. 2008 Dec; 10(6): 431-40Wei S, Sadr A, Shimada Y, Tagami J The aim of this study was to evaluate the microshear bond strength of three current adhesives to normal and caries-affected dentin, and to examine the correlation between dentin nanoindentation hardness and bond strength.Nanoindentation hardness of dentin and microshear bond strength of … Continue reading »
