Sol-gel dip coating of yttria-stabilized tetragonal zirconia dental ceramic by aluminosilicate nanocomposite as a novel technique to improve the bonding of veneering porcelain

Madani, A. and Nakhaei, M. and Karami, P. and Rajabzadeh, G. and Salehi, S. and Bagheri, H. (2016) Sol-gel dip coating of yttria-stabilized tetragonal zirconia dental ceramic by aluminosilicate nanocomposite as a novel technique to improve the bonding of veneering porcelain. International Journal of Nanomedicine, 11. pp. 3215-3223.

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The aim of this in vitro study was to evaluate the effect of silica and aluminosilicate nanocomposite coating of zirconia-based dental ceramic by a sol-gel dip-coating technique on the bond strength of veneering porcelain to the yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) in vitro. Thirty Y-TZP blocks (10 mm ×10 mm ×3 mm) were prepared and were assigned to four experimental groups (n=10/group): C, without any further surface treatment as the control group; S, sandblasted using 110 µm alumina powder; Si, silica sol dip coating + calcination; and Si/Al, aluminosilicate sol dip coating + calcination. After preparing Y-TZP samples, a 3 mm thick layer of the recommended porcelain was fired on the coated Y-TZP surface. Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray analysis were used to characterize the coating and the nature of the bonding between the coating and zirconia. To examine the zirconia-porcelain bond strength, a microtensile bond strength (µTBS) approach was chosen. FT-IR study showed the formation of silica and aluminosilicate materials. XRD pattern showed the formation of new phases consisting of Si, Al, and Zr in coated samples. SEM showed the formation of a uniform coating on Y-TZP samples. Maximum µTBS values were obtained in aluminosilicate samples, which were significantly increased compared to control and sandblasted groups (P=0.013 and P<0.001, respectively). This study showed that aluminosilicate sol-gel dip coating can be considered as a convenient, less expensive reliable method for improving the bond strength between dental Y-TZP ceramics and veneering porcelain. © 2016 Madani et al.

Item Type: Article
Additional Information: Cited By :5 Export Date: 16 February 2020 Correspondence Address: Bagheri, H.; Department of Operative Dentistry, Faculty of Dentistry, Dental Materials Research Center, Mashhad University of Medical Sciences, Ferdowsi Campus, Vakilabad Highway, Iran; email:
Uncontrolled Keywords: Bond strength Dip coating Porcelain Zirconia aluminosilicate nanocomposite aluminum aluminum oxide dental ceramics dental porcelain nanocomposite silicon unclassified drug yttrium zirconium zirconium oxide aluminosilicate aluminum silicate dental material yttria Article controlled study dental bonding dental veneer in vitro study infrared spectroscopy material coating scanning electron microscopy sol gel dip coating tensile strength X ray analysis chemistry spectrometry X ray diffraction Aluminum Silicates Dental Materials Dental Veneers Microscopy, Electron, Scanning Nanocomposites Spectrometry, X-Ray Emission Spectroscopy, Fourier Transform Infrared X-Ray Diffraction
Subjects: WU Dentistry. Oral surgery
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib4 lib4
Date Deposited: 02 Mar 2020 04:51
Last Modified: 02 Mar 2020 04:51

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