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Eur J Oral Sci. 2016 Feb;124(1):96-102. doi: 10.1111/eos.12232. Epub 2015 Dec 1.

Effect of a functional monomer (MDP) on the enamel bond durability of single-step self-etch adhesives.

Author information

1
Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
2
Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA.

Abstract

The present study aimed to determine the effect of the functional monomer, 10-methacryloxydecyl dihydrogen phosphate (MDP), on the enamel bond durability of single-step self-etch adhesives through integrating fatigue testing and long-term water storage. An MDP-containing self-etch adhesive, Clearfil Bond SE ONE (SE), and an experimental adhesive, MDP-free (MF), which comprised the same ingredients as SE apart from MDP, were used. Shear bond strength (SBS) and shear fatigue strength (SFS) were measured with or without phosphoric acid pre-etching. The specimens were stored in distilled water for 24 h, 6 months, or 1 yr. Although similar SBS and SFS values were obtained for SE with pre-etching and for MF after 24 h of storage in distilled water, SE with pre-etching showed higher SBS and SFS values than MF after storage in water for 6 months or 1 yr. Regardless of the pre-etching procedure, SE showed higher SBS and SFS values after 6 months of storage in distilled water than after 24 h or 1 yr. To conclude, MDP might play an important role in enhancing not only bond strength but also bond durability with respect to repeated subcritical loading after long-term water storage.

KEYWORDS:

10-methacryloxydecyl dihydrogen phosphate (MDP); bond durability; shear bond strength; shear fatigue strength; single-step self-etch adhesives

PMID:
26620762
DOI:
10.1111/eos.12232
[Indexed for MEDLINE]

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