Comparison of Elastic Modulus and Compressive Strength of Ariadent and Harvard Polycarboxylate Cement and Vitremer Resin Modified Glass Ionomer

Leila Ahmadian; Rasoul Arbabi Kalati; Parvin Arbabi Kalati

Zahedan Journal of Research in Medical Sciences

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Comparison of Elastic Modulus and Compressive Strength of Ariadent and Harvard Polycarboxylate Cement and Vitremer Resin Modified Glass Ionomer

Author(s):

Leila Ahmadian¹,

Rasoul Arbabi Kalati ^1,*,

Parvin Arbabi Kalati²

1Assistant Prof, Dept of Prosthodontics, Faculty of Dentistry, Zahedan University of Medical Science, Zahedan, Iran

2Student of Dentistry, Faculty of Dentistry, Zahedan University of Medical Science, Zahedan, Iran

Zahedan Journal of Research in Medical Sciences:Vol. 11, issue 3; e94390

Published online:Nov 21, 2009

Article type:Research Article

Received:Aug 24, 2008

Accepted:Jun 20, 2009

How to Cite:Leila AhmadianRasoul Arbabi Kalati Parvin Arbabi KalatiComparison of Elastic Modulus and Compressive Strength of Ariadent and Harvard Polycarboxylate Cement and Vitremer Resin Modified Glass Ionomer.Zahedan J Res Med Sci.11(3):e94390.

Abstract

Background: Luting agents are used to attach indirect restoration into or on the tooth. Poor mechanical properties of cement may be a cause of fracture of this layer and lead to caries and restoration removal. The purpose of this study was to compare the elastic modulus and compressive strength of Ariadent (A Poly) and Harvard polycarboxylate (H Poly) cements and Vitremer resin modified glass ionomer (RGl). Materials & Methods: In this experimental study 15 specimens were prepared form each experimental cement in Laboratory of Tehran Oil Refining Company. The cylindrical specimens were compressed in Instron machine after 24 hours. Elastic modulus and compressive strength were calculated from stress/strain curve of each specimen. One way ANOVA and Tukey tests were used for statistical analysis and P values<0.05 were considered to be statistically significant. Results: The mean elastic modulus and mean compressive strength were 2.2 GPa and 87.8MPa in H poly, 2.4 GPa and 56.5 MPa in A Poly, and 0.8GPa and 105.6 MPa in RGI, respectively. Statistical analysis showed that compressive strength and elastic modulus of both polycarboxylate cements were significantly different from hybrid ionomer (P<0.05), but the difference between elastic modulus of two types of polycarboxilate cements was not statistically significant. Compressive strength of two polycarboxilate cements were significantly different (P<0.05). Conclusion: An ideal lutting agent must have the best mechanical properties. Between the tested luttins RGl cement had the lowest elastic modulus and the highest compressive strength, but the A poly cement had the highest elastic modulus and the lowest compressive strength. Therefore none of them was the best.

Keywords

Lutting agent

compressive strength

elastic modulus.

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