The aim of the present in vitro study was to investigate effects 10% and 40% citric acid (CA) on color calcium silicate–based cements (CSCs) comparison common root canal irrigants. Samples six CSCs (n = 6)—ProRoot MTA (Dentsply, Tulsa, OK, USA), Biodentine (Septodont, Saint-Maur-des-Fossés, France), Plus (Avalon Biomed Inc, by Prevest Denpro Limited, Jammu, India), Repair HP (Angelus, Londrina,...

White spot lesions are observed in nearly 50% of patients undergoing orthodontic treatment. Long-lasting antibacterial properties of orthodontic cements can reduce this phenomenon. The aim of this research was to compare antimicrobial activity of three commercial glass ionomer cements with three commercial zinc phosphate cements, over time, against streptococcus mutans and candida albicans. Dir...

OBJECTIVE Mineral Trioxide Aggregate (MTA) is a calcium silicate cement composed of Portland cement (PC) and bismuth oxide. Hydroxyapatite has been incorporated to enhance mechanical and biological properties of dental materials. This study evaluated physicochemical and mechanical properties and antibiofilm activity of MTA and PC associated with zirconium oxide (ZrO2) and hydroxyapatite nanopar...

To study the mechanical effect of clay under acidic and basic conditions, typical minerals, montmorillonite illite, were taken as main research objects in this study. The variation law mechanism cohesive force internal friction angle studied by immersing remoulded soil HNO 3 solution with pH = NaOH (alkaline waste liquid) 13.5, respectively. It was found that, a corrosion reaction between miner...

The Phenolate Cement Zinc oxide-eugenol cements have always been regarded as the blandest in terms of their effect on the dental pulp. For this reason, these materials were commonly used as the control in biocompatibility pulp research studies on cements and restorative materials. Zinc oxide-eugenol cements have traditionally been used as temporary restoratives because of the sedative effect on...

Creep of the cement matrix affects structural stability concrete. In Portland cements, creep is largely controlled by binding phase calcium-(aluminum-)silicate-hydrate, or C-(A-)S-H. This has a lamellar structure and under deviatoric stress aligns its c -axis with principal stress. However, limiting resistance to this reorientation unknown at nanocrystalline level. Small-angle X-ray scattering ...