Introduction One of the most important factors for successful endodontic therapy is root canal cleaning. The difficulty involved in eliminating microorganisms, as well as their residual presence, warrants the use of root canal dressings after bio-mechanical preparation. Aim The aim of the study was to compare the diffusion ability between nonalcoholic calcium hydroxide-propolis paste, calcium...

residual microorganisms in the root canal system (rcs) after endodontic therapy such as candida albicans are a major cause of endodontic failure. calcium hydroxide (ch) and chlorhexidine (chx) have suitable antimicrobial activity against bacteria and can be used as intracanal medicaments. nanosilver has also shown antimicrobial activity against microorganisms. this study aimed to compare the an...

introduction : this investigation evaluates the effects of mineral trioxide aggregate (mta), calcium hydroxide (ch) and calcium enriched mixture (cem) as pulp capping materials on dental pulp tissues. materials and methods: the experimental procedures were performed on eighteen intact dog canine teeth. the pulps were exposed. cavities were randomly filled with cem, mta, or ch followed by glass ...

      Nanocrystalline hydroxyapatite was precipitated from calcium hydroxide and phosphoric acid. Effects of precipitation temperature and different calcium to phosphate ratios (Ca/P) on the obtained powders were investigated. Characteriza-tion of the powders was performed using XRD and FTIR spectra, scanning electron microscopy, and transmission electron microscopy. Increase in precipitation t...

introduction: root canal treatment is based on elimination of intraradicular microorganisms. calcium hydroxide ca(oh) 2 is the most widely used material for canal dressing, however, enterococcus faecalis has been reported to be resistant bacteria in persistent apical periodontitis . the purpose of this study was to evaluate the efficacy of ca(oh) 2 on the elimination of intraluminal and intratu...

introduction: enterococcus faecalis ( e. faecalis ) has the ability to invade the dentinal tubules and resist high ph levels. as a result, calcium hydroxide (ch) is not much effective on this bacterium. in theory, nanoparticle calcium hydroxide (nch) has smaller size and high surface area that enables it to penetrate into the deeper layers of dentin and be more effective on e. faecalis. this in...

introduction: direct pulp capping (dpc) is coverage of exposed pulp by a biocompatible material after traumatic or carious exposure. the purpose of this procedure is to seal against bacterial leakage, stimulate dentinal barrier formation, and maintain the vitality of pulp. several factors contribute to the consequence of this treatment such as material and the procedural technique. the aim of t...

Spherical silica nanoparticles (n‐SiO2) with controllable size have been synthesized using tetraethoxysilane as starting material and ethanol as solvent by sol‐gel method. Morphology and size of the particles was controlled through surfactants. Sorbitan monolaurate, sorbitain monopalmitate and sorbitain monostearate produced silica nanoparticles of varying siz...