J Dent Res Dent Clin Dent Prospects. 2021;15(2): 129-132.
doi: 10.34172/joddd.2021.022
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Clinical Dentistry

Original Article

Effects of various liquid-to-powder ratios on the compressive strength of calcium enriched mixture: Original research

Mohammad Forough Reyhani 1, Sheida Hosseinian Ahangarnezhad 2*, Negin Ghasemi 1, Amin Salem Milani 1

1 Department of Endodontics, Dental and Periodontal Research Center, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
2 Dentist, Private Practitioner, Tabriz, Iran
*Corresponding author: Sheida Hosseinian Ahangarnezhad, Email: sheida.hosseinian91@gmail.com


Background. Calcium-enriched mixture (CEM) cement has been introduced and marketed as a biomaterial for use in furcal perforation repair and apexogenesis procedures, in which the compressive strength that indicates the material’s resistance against crushing is of utmost importance. This study evaluated the effect of various liquid-to-powder ratios on CEM cement’s compressive strength.

Methods. One gram of the cement was mixed with 0.5, 0.34, and 0.25 mL of demineralized water and transferred to stainless steel molds (6 and 4 mm in height and diameter, respectively). Five cells in the mold were considered for each group. The compressive strength test was conducted using the universal testing machine after incubating for seven days under 95% humidity at 37°C. One-way ANOVA was applied for data analysis at P≤0.05 significance level.

Results. The mean compressive strength in the liquid-to-powder ratios of 0.5, 0.34, and 0.25 were 3.4456, 3.2960, and 3.3485, respectively, with no significant differences between them.

Conclusion. Under this study’s limitations, changing the liquid-to-powder ratio did not affect CEM cement’s compressive strength.

Keywords: CEM cement, Compressive strength, Liquid-to-powder ratio
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Submitted: 19 Apr 2020
Accepted: 27 Jan 2021
ePublished: 05 May 2021
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