Introduction: Beta calcium sulfate hemihydrate (BCSH), which is commonly known as “Gypsum plaster” has long been used as bone graft material because of its excellent biocompatibility and the ability for bone regeneration. Several methods have been used for the preparation of BCSH, including heat treatment of calcium sulfate dihydrate with water, application of inorganic acids or condensed inorg...

The aim of this study was evaluated, in vitro, the tensile bond strength to dentin Single Bond (3M) adhesive system applied over surfaces treated with hith-speed handpiece, Er.YAG laser or air abrasion. Thity four enclosed molars extracted due therapeutic indication had been used. teeth sectioned on mesial-distal sense. dental portions included a selfcured acrilic resin and so fourty five sampl...

Objective: To compare the effect of Maleic acid and Irritrol (combination Chlorhexidine & Ethylenediaminetetraacetic acid) irrigation on sealing ability Biodentine when used as root-end filling material. Material Methods: Thirty single-rooted human premolars were subjected to standardized root canal instrumentation irrigated with 2.5% Sodium Hypochlorite (NaOCl) after each instrument change. Ap...

This study aimed to compare marginal adaptation in enamel and dentin before after aging of laser vs. bur-prepared mixed class V cavities restored by different restorative systems. Seventy two caries-free human molars were distributed nine experimental groups; prepared using lasers: a handpiece -integrated 2.94 μm Er:YAG at 4.5 W, 300 mJ, 0.75 50 mJ with 15 Hz (LiteTouch, Light Instruments, Isra...

Histone-lysine methylation is linked to transcriptional regulation and the control of epigenetic inheritance. Lysine residues can be mono-, di-, or trimethylated, and it has been suggested that each methylation state of a given lysine may impart a unique biological function. In yeast, histone H3 lysine 4 (K4) is mono-, di-, and trimethylated by the Set1 histone methyltransferase. Previous studi...