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J Endod. 2014 Jul;40(7):953-7. doi: 10.1016/j.joen.2013.11.007. Epub 2013 Dec 17.

Influence of acidic environment on properties of biodentine and white mineral trioxide aggregate: a comparative study.

Author information

1
Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt. Electronic address: aelnaghy@mans.edu.eg.

Abstract

INTRODUCTION:

The purpose of this study was to evaluate the surface microhardness, compressive strength, bond strength, and morphologic microstructures of Biodentine (BD; Septodont, Saint Maur des Fossés, France) and white mineral trioxide aggregate (WMTA) after exposure to a range of acidic pH levels.

METHODS:

For each test, 4 groups of each material were exposed to pH values of 7.4, 6.4, 5.4, and 4.4, respectively, for 7 days. The surface hardness was determined using Vickers microhardness. The compressive strength and micro-push-out bond strength were determined using the universal testing machine at a crosshead speed of 0.5 mm/min. The morphologic microstructures of specimens were evaluated using scanning electron microscopy.

RESULTS:

BD showed higher surface hardness, compressive strength, and bond strength to root dentin compared with WMTA after exposure to different pH values. A substantial change in the microstructure of BD and WMTA occurred after exposure to different pH values. WMTA appeared to be more sensitive to acidic pH environments than BD.

CONCLUSIONS:

BD material seems more appropriate for use when exposed to an acidic environment compared with WMTA.

KEYWORDS:

Acidic; Biodentine; bond; compressive; hardness; microstructures

PMID:
24935542
DOI:
10.1016/j.joen.2013.11.007
[Indexed for MEDLINE]

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