Properties of NeoMTA Plus and MTA Plus cements for endodontics

Aim: To test a novel calcium silicate cement mixed with a water-based gel (NeoMTA Plus) with regard to chemical-physical properties and apatite-forming ability. Methodology: NeoMTA Plus (Avalon Biomed Inc. Bradenton, FL, USA; lot. 2014090301) and a commercial MTA-based material with similar properties (MTA Plus, Prevest Denpro Limited, Jammu, India; lot. 41001) were tested for ion-releasing ability, initial and final setting times, radiopacity, open and impervious porosity and apparent porosity, water sorption, weight loss, solubility, ability to nucleate calcium phosphates (CaP) after immersion in HBSS (Hank's Balanced Salt Solution) by ESEM-EDX and micro-Raman spectroscopy. The results were analysed statistically with the anova test (P<0.05). Results: NeoMTA Plus had a prolonged setting time (315min) and a satisfactory radiopacity (3.76mm Al). Calcium and hydroxyl ion release was significantly greater and more prolonged in comparison with MTA Plus (P