INTRODUCTION The purpose of this study was to evaluate the effect of different solvents; carbonic acid (H2CO3), hydrochloric acid (HCl), chlorhexidine (CHX) and sodium hypochlorite (NaOCl) on the surface hardness of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement. METHODS AND MATERIALS Plexiglass molds were prepared and filled with Angelus MTA or CEM cement and then...

A study was directed to analyze the influence of different types Ordinary Portland Cements (OPC) on hardened cement paste exposed high temperatures. Hardened specimens with three and nine water-cement ratios were investigated heated 11 heat steps at 28 days age. Residual compressive strength relative residual compared unheated results. It shown that expected range for OPC up 400 °C is between 9...

PURPOSE The aim was to evaluate the effect of curing mode and different dentin surface pretreatment on microtensile bond strength (µTBS) of self-adhesive resin cements. MATERIALS AND METHODS Thirty-six extracted human permanent molars were sectioned horizontally exposing flat dentin surface. The teeth were divided into 12 groups (3 teeth/group) according to the dentin surface pretreatment met...

Yeelimite is one of the main components SulfoBelite (SB) and Calcium SulfoAluminate cements which are promising low carbon alternatives to Portland ones. In this study, stoichiometric yeelimite, obtained at different temperatures, was characterized by XRD, Q-XRD SEM-EDS. Additionally, mortars synthetic with without standard sand, were studied in terms development strength over time. The result ...

In order to improve the contribution sustainability of cement production, several strategies have been developed, such as incorporation additions clinker replacement. Regarding production commercial cements with additions, those made binary binders are mostly produced. However, use ternary for manufacturing is still very low, at least in Spain, and they could also be an adequate solution produc...

UNLABELLED Clinicians tend to make reductions in glass ionomer power/liquid (P/L) ratios since some materials are difficult to mix and flow into small cavities, grooves or pits. In general, changing the P/L ratio decreases the physical and mechanical properties of conventional glass ionomer cements (GICs) and resin modified glass ionomer cements (RMGICs), but alterations seem to depend on their...

Abstract Most supplementary cementitious materials (SCMs) are predominantly poorly-crystalline or amorphous. Their reactivity is routinely evaluated through SEM image analysis (SEM/IA), which a laborious and resource intensive technique. Quantitative X-ray diffraction (QXRD) provides an alternative, facilitating simultaneous evaluation of reaction kinetics phase assemblages. However, QXRD requi...

Background and aims. Bonding of composite resin filling materials to pulp protecting agents produces an adhesive joint which is important for the quality of filling as well as success of restoration. We aimed to assess the bond strength of composite resin to three pulp capping biomaterials: Pro Root mineral trioxide aggregate (PMTA), Root MTA (RMTA) and calcium enriched mixture (CEM) cement, us...

introduction: the purpose of this study was to evaluate the effect of different solvents; carbonic acid (h 2 co 3 ), hydrochloric acid (hcl), chlorhexidine (chx) and sodium hypochlorite (naocl) on the surface hardness of mineral trioxide aggregate (mta) and calcium-enriched mixture (cem) cement. methods and materials: plexiglass molds were prepared and filled with angelus mta or cem cement and ...

In concrete technology, cements with a high content of Portland clinker are increasingly being replaced by blended binders lower carbon footprint. Such include blastfurnace cements, which successfully used in concretes designed for large-scale elements, self-compacting concretes, as well the precast industry. Blast furnace exhibit strength gain relative to and heat hydration. Composites that in...