Influence of powder-to-water ratio on radiopacity, setting time, pH, calcium ion release and a micro-CT volumetric solubility of white mineral trioxide aggregate

The purpose of this study was to improve the operability of calcium silicate cements (CSCs) such as mineral trioxide aggregate (MTA) cement. The flow, working time, and setting time of CSCs with different compositions containing low-viscosity methyl cellulose (MC) or hydroxypropyl cellulose (HPC) additive were examined according to ISO 6876-2012; calcium ion release analysis was also conducted. MTA and low-heat Portland cement (LPC) including 20% fine particle zirconium oxide (ZO group), LPC including zirconium oxide and 2 wt% low-viscosity MC (MC group), and HPC (HPC group) were tested. MC and HPC groups exhibited significantly higher flow values and setting times than other groups (p<0.05). Additionally, flow values of these groups were higher than the ISO 6876-2012 reference values; furthermore, working times were over 10 min. Calcium ion release was retarded with ZO, MC, and HPC groups compared with MTA. The concentration of calcium ions was decreased by the addition of the MC or HPC group compared with the ZO group. When low-viscosity MC or HPC was added, the composition of CSCs changed, thus fulfilling the requirements for use as root canal sealer. Calcium ion release by CSCs was affected by changing the CSC composition via the addition of MC or HPC.

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pH, Calcium Ion Release, and Setting Time of an Experimental Mineral Trioxide Aggregate–based Root Canal Sealer

Journal of Endodontics ◽

10.1016/j.joen.2011.02.033 ◽

2011 ◽

Vol 37 (6) ◽

pp. 844-846 ◽

Cited By ~ 40

Author(s):

Santiago Massi ◽

Mário Tanomaru-Filho ◽

Guilherme Ferreira Silva ◽

Marco Antonio Hungaro Duarte ◽

Larissa Tercilia Grizzo ◽

...

Keyword(s):

Root Canal ◽

Calcium Ion ◽

Setting Time ◽

Mineral Trioxide Aggregate ◽

Root Canal Sealer ◽

Ion Release

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Evaluation of pH and Calcium Ion Release of a Dual-cure Bisphenol A Ethoxylate Dimethacrylate/Mineral Trioxide Aggregate–based Root-end Filling Material

Journal of Endodontics ◽

10.1016/j.joen.2013.08.013 ◽

2013 ◽

Vol 39 (12) ◽

pp. 1603-1606 ◽

Cited By ~ 3

Author(s):

Giane da Silva Linhares ◽

Maximiliano Sérgio Cenci ◽

César Blaas Knabach ◽

Camila Mizette Oliz ◽

Mariana Antunes Vieira ◽

...

Keyword(s):

Bisphenol A ◽

Calcium Ion ◽

Mineral Trioxide Aggregate ◽

Filling Material ◽

Ion Release

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Effect of powder-to-water ratio on the push-out bond strength of white mineral trioxide aggregate

Dental Traumatology ◽

10.1111/edt.12194 ◽

2015 ◽

Vol 32 (2) ◽

pp. 153-155 ◽

Cited By ~ 4

Author(s):

Sevinç Aktemur Türker ◽

Emel Uzunoğlu

Keyword(s):

Bond Strength ◽

Mineral Trioxide Aggregate ◽

Push Out ◽

Water Ratio ◽

White Mineral

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The Use of a Setting Accelerator and Its Effect on pH and Calcium Ion Release of Mineral Trioxide Aggregate and White Portland Cement

Journal of Endodontics ◽

10.1016/j.joen.2006.07.018 ◽

2006 ◽

Vol 32 (12) ◽

pp. 1194-1197 ◽

Cited By ~ 67

Author(s):

E ANTUNESBORTOLUZZI ◽

N JUAREZBROON ◽

M ANTONIOHUNGARODUARTE ◽

A DEOLIVEIRADEMARCHI ◽

C MONTEIROBRAMANTE

Keyword(s):

Portland Cement ◽

Calcium Ion ◽

Mineral Trioxide Aggregate ◽

Ion Release ◽

White Portland Cement

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Evaluation of Physicochemical Properties of New Calcium Silicate-Based Sealer

Brazilian Dental Journal ◽

10.1590/0103-6440201802088 ◽

2018 ◽

Vol 29 (6) ◽

pp. 536-540 ◽

Cited By ~ 7

Author(s):

Aline Teixeira Mendes ◽

Paula Barcellos da Silva ◽

Bruna Barcelos Só ◽

Lina Naomi Hashizume ◽

Rodrigo Ricci Vivan ◽

...

Keyword(s):

Physicochemical Properties ◽

Calcium Ion ◽

Calcium Silicate ◽

Calcium Release ◽

Setting Time ◽

Porto Alegre ◽

Ion Release ◽

Ph Values ◽

Time Flow ◽

Ah Plus

Abstract This study aimed to evaluate the physicochemical properties of a calcium silicate-based sealer (Sealer Plus BC; MK Life, Porto Alegre, Brazil) compared with an epoxy-resin sealer (AH Plus; Dentsply DeTrey GmbH, Konstanz, Germany). Initial and final setting time was assessed based on ISO 6876:2012 and ASTM C266:03. Calcium ion release and pH were evaluated by filling polyethylene tubes with sealers and then immersing them in 10 mL of deionized water. Following experimental periods of 1, 24, 72 and 168 hours, the samples were measured regarding pH and calcium ion release with a pH meter and a colorimetric spectrophotometer, respectively. The flow was examined based on ISO 6876:2012. Rings of 10 mm in diameter with 1 mm thickness were prepared to analyze the radiopacity (ISO 6876:2012 and ADA n.57) and solubility (ISO 6876:2012). The data were analyzed by variance analysis, Student-T and Tukey tests (p<0.05). The calcium ion release and pH values were significantly higher for the Sealer Plus BC compared with the AH Plus (p<0.05). Lower setting time, flow and radiopacity were observed for the bioceramic sealer than for AH Plus (p<0.05). Sealer Plus BC exhibited higher solubility compared with AH Plus (p<0.05). Sealer Plus BC showed physicochemical properties as setting time, pH, calcium release, flow, and radiopacity following the required standards, but higher solubility than the minimum values required by ISO 6876:2012.

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Chemical modification of MTA and CEM cement to decrease setting time and improve bioactivity properties by adding alkaline salts

Journal of Dental Research Dental Clinics Dental Prospects ◽

10.34172/joddd.2020.001 ◽

2020 ◽

Vol 14 (1) ◽

pp. 1-11

Author(s):

Faeze Jamali Zavare ◽

Hanieh Nojehdehian ◽

Maryam Moezizadeh ◽

Mehdi Daneshpooya

Keyword(s):

Surface Morphology ◽

Calcium Ion ◽

Inductively Coupled Plasma ◽

Setting Time ◽

Calcium Nitrate ◽

Release Profile ◽

Phase Identification ◽

Ion Release ◽

Cem Cement

Background . Mineral trioxide aggregate (MTA) and Calcium-enriched Mixture (CEM) cement are used for pulp capping since they induce the formation of a dentinal bridge. Long setting time is a shortcoming of these types of cement. This study aimed to assess the effect of the incorporation of some alkaline salts to MTA and CEM cement on their setting time, ion release profile, pH, and surface morphology. Methods. In this in vitro experimental study, 5% calcium chloride (CaCl2), calcium oxide (CaO), sodium fluoride (NaF), and calcium nitrate [Ca(NO3)2] were separately added to MTA and CEM cement. The primary and final setting times of the cements were measured using a Gillmore needle apparatus. The samples were immersed in simulated body fluid (SBF) for one, seven, and 14 days and subjected to x-ray diffraction (XRD) and scanning electron microscopy (SEM) for phase identification and surface morphology assessment. The change in the pH of solutions was studied, and the calcium ion release profile was determined using inductively coupled plasma atomic emission spectroscopy (ICP-AES). The data were analyzed with ANOVA, followed by post hoc tests. Results. CaCl2 and CaO decreased the setting time of MTA, and Ca(NO3)2 decreased the setting time of CEM cement. The incorporation of the salts increased the pH and calcium ion release from both cements, and hydroxyapatite deposits were noted to cover the surface of the samples (observed by SEM and confirmed by EDXA). Conclusion. The incorporation of CaCl2 and CaO into MTA and Ca(NO3)2 into CEM cement decreased their setting time and increased their pH and calcium ion release.

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