Physicochemical properties of calcium silicate-based formulations MTA Repair HP and MTA Vitalcem

Abstract

ObjectiveThis study aimed to analyze the following physicochemical properties: radiopacity, final setting time, calcium release, pH change, solubility, water sorption, porosity, surface morphology, and apatite-forming ability of two calcium silicate-based materials.Material and methodsWe tested MTA Repair HP and MTA Vitalcem in comparison with conventional MTA, analyzing radiopacity and final setting time. Water absorption, interconnected pores and apparent porosity were measured after 24-h immersion in deionized water at 37°C. Calcium and pH were tested up to 28 d in deionized water. We analyzed data using two-way ANOVA with Student-Newman-Keuls tests (p<0.05). We performed morphological and chemical analyses of the material surfaces using ESEM/EDX after 28 d in HBSS.ResultsMTA Repair HP showed similar radiopacity to that of conventional MTA. All materials showed a marked alkalinizing activity within 3 h, which continued for 28 d. MTA Repair HP showed the highest calcium release at 28 d (p<0.05). MTA Vitalcem showed statistically higher water sorption and solubility values (p<0.05). All materials showed the ability to nucleate calcium phosphate on their surface after 28 d in HBSS.ConclusionsMTA Repair HP and MTA Vitalcem had extended alkalinizing activity and calcium release that favored calcium phosphate nucleation. The presence of the plasticizer in MTA HP might increase its solubility and porosity. The radiopacifier calcium tungstate can be used to replace bismuth oxide.

Cytotoxicity, Biocompatibility and Biomineralization of a New Ready-for-Use Bioceramic Repair Material

“…These data disagree with the present study, where positive structures for von Kossa and polarized light were observed, which would require the release of calcium into the tissue to occur. In addition, according to Guimarães et al (19), the properties of calcium silicate cements that are due to the formation of calcium hydroxide associated with the release of calcium ions, which allow the alkalinizing activity, were observed in both white MTA-Ang and MTA-HP (19).…”

Higher hydration performance and bioactive response of the new endodontic bioactive cement MTA HP repair compared with ProRoot MTA white and NeoMTA plus

“…Besides, supplementary agents as propylene glycol sodium phosphate dibasic or methylcellulose and calcium chloride could well improve significantly different properties of final hydrated material although particular attention to all biocompatibility aspects involved should be taken into consideration . Also, the presence of the plasticizer in MTA Repair HP might increase its solubility and porosity …”

The Effectiveness of Laser-Activated Irrigation on the Apical Microleakage Qualities of MTA Repair HP and NeoMTA Plus in Simulated Immature Teeth: A Comparative Study

“…Eneide et al also showed that antibiofilm efficacy of different irrigation solutions could be increased by various irrigation methods such as passive ultrasonic irrigation (PUI) and passive sonic irrigation (PSI), compared to theconventional needle irrigation technique [ 40 ]. Although a recent literature review reveals that new endodontic cement MTA Repair HP has successful physicochemical and biocompatible properties, such as including a plasticizer to simplify manipulation and insertion to the root canals [ 13 , 14 , 15 ], studies related to the root-end filling/apical sealing performance of MTA Repair HP, as well as to the effects of LAI on both tested calcium silicate cements,are very scarce. Therefore, the possibility of a comparison of the apical microleakage quality of these materials regarding LAI after retrograde filling with similar studies is limited.…”

“…The liquid state of this product is obtained by the addition of an organic plasticizer (to gain plasticity and thus increase its manipulation) into distilled water [ 13 , 14 ]. These bioactive materials are mainly recommended for the dental pulp treatments (pulp capping, pulpotomy), apexification, apexogenesis, root-end filling and repair of root canal resorption [ 15 ].…”