Influence of powder-liquid ratio on the physicochemical properties of MTA Repair HP cement

Roberta Bosso-Martelo, Mariana Mena Barreto Pivoto-João, Cristiane Lopes Zordan-Bronzel, Kennia Scapin Viola, Eric Hernán Coaguila-Llerena, Mario Tanomaru-Filho

Introduction: MTA Repair HP has been recently developed. The aim of this study was to evaluate setting time, radiopacity and solubility of HP Repair MTA in powder-liquid ratio according to manufacturer’s instructions (MTA HP+, 0.8 g powder and liquid 320μl) or less powder (MTA HP- 0.7 g powder and liquid 320 μl) compared to MTA Angelus. Material and methods: The radiopacity was assessed by radiographs of materials in relation to an aluminum scale. Setting time was evaluated by Gilmore needles; and solubility, after immersing the material in distilled water (7 days). Data were analyzed by using ANOVA and Tukey tests with a 5% significance level. Results: The initial and final setting times were longer for MTA HP- than MTA HP+ and MTA Angelus (p <0.05). MTA HP+ and MTA HP- had higher solubility than the MTA Angelus (p <0.05). The radiopacity values of MTA HP+ and MTA HP- were lower than the MTA Angelus (p <0.05). Conclusions: Decreasing the amount of powder in powder-liquid ratio of MTA HP results in longer setting time, with no change in other properties evaluated. MTA HP had lower radiopacity than MTA Angelus.

Keywords: Endodontics. Root Canal Preparation. Dental Pulp Cavity.

How to cite: Bosso-Martelo R, Pivoto-João mmB, Zordan-Bronzel CL, Viola KS, Coaguila-Llerena EH, Tanomaru-Filho M. Influence of powder-liquid ratio on the physicochemical properties of MTA Repair HP cement. Dental Press Endod. 2018 Jan-Apr;8(1):46-50. DOI: https://doi.org/10.14436/2358-2545.8.1.046-050.oar

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