Nanotube-Modified Dentin Adhesive –Physicochemical and Dentin Bonding Characterizations

Journal Article

, Marco C. Bottino, Ghada Batarseh, Jadesada Palasuk, Mohammed S. Alkatheeri, L. Jack Windsor, and Jeffrey A. Platt. . 2013

• نوع عمل المنشور: بحث
• رابط المنشور على الويب: http://www.demajournal.com/article/S0109-5641(13)00430-2/abstract
• الوسوم: Adhesives, Bond strength, Dentin, Halloysite, Nanotube, Resin–dentin interface, SEM
• المجلة \ الصحيفة: Dental Materials
• رقم العدد: 29
• رقم الإصدار السنوي: 1158–1165

مستخلص المنشور

Abstract

OBJECTIVE:

The aim of this study was to investigate the effect of aluminosilicate clay nanotubes (Halloysite, HNT) incorporated into the adhesive resin of a commercially available three-step etch and rinse bonding system (Adper Scotchbond Multi-Purpose/SBMP) on dentin bond strength, as well as the effect on several key physicochemical properties of the modified adhesive.

METHODS:

Experimental adhesives were prepared by adding five distinct HNT amounts (5-30 wt.%) into the adhesive resin (w/v) of the SBMP dentin bonding system. Bond strength to human dentin, microhardness, and degree of conversion (DC) of the modified adhesives were assessed.

RESULTS:

From the shear bond strength data, it was determined that HNT incorporation at a concentration of 30 wt.% resulted in the highest bond strength to dentin that was statistically significant (p=0.025) when compared to the control. Even though a significant increase in microhardness (p<0.001) was seen for the 30 wt.% HNT-incorporated group, a significantly lower DC (p<0.001) was recorded when compared to the control.

SIGNIFICANCE:

It was concluded that HNT can be incorporated up to 20 wt.% without jeopardizing important physicochemical properties of the adhesive. The modification of the SBMP dentin bonding agent with 20 wt.% HNT appears to hold great potential toward contributing to a durable dentin bond; not only from the possibility of strengthening the bond interface, but also due to HNT intrinsic capability of encapsulating therapeutic agents such as matrix metalloproteinase (MMP) inhibitors.

Copyright © 2013 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.