J Dent Rehabil Appl Sci.  2016 Sep;32(3):194-201. 10.14368/jdras.2016.32.3.194.

The effect of Zirconium Nitride coating on shear bond strength with denture base resin in Co-Cr alloy and titanium alloy

• Park C
• Lee KH
• Lim HP

• KMID: 2357847
• DOI: http://doi.org/10.14368/jdras.2016.32.3.194

Abstract

PURPOSE
The purpose of this study was to evaluate of Zirconium Nitride (ZrN) coating on shear bond strength with denture base resin in Co-Cr and Ti-6Al-4V alloy.
MATERIALS AND METHODS
Co-Cr and Ti-6Al-4V alloy disks (10 mm in diameter, 2.5 mm in thickness; each other: n = 14) were prepared and divided with 2 groups each other by ZrN coating. After primer was applied to disks surface, denture base resin with diameter 6 mm, height 5 mm was bonded on metal disk surface. After surface roughness was measured by Profiler, shear bond strength was determined with Universal testing machine and analyzed with two-way ANOVA. The specimen surfaces and failure mode were examined using a scanning electron microscope.
RESULTS
ZrN coated groups showed significantly higher rough surface than non-coated groups (P < 0.05). Irrespective of alloy materials, shear bond strength of ZrN coated groups were lower than non-coated groups (P < 0.001). The scanning electron microscope (SEM) of ZrN coated groups showed mixed and adhesive fractures.
CONCLUSION
ZrN coating weakened bonding strength between denture base resin and Co-Cr, Ti-6Al-4V alloy.

Keyword

Zirconium Nitride (ZrN); Co-Cr alloy; Ti-6Al-4V alloy; denture base resin; shear bond strength

MeSH Terms

Adhesives
Alloys*
Denture Bases*
Dentures*
Titanium*
Zirconium*
Adhesives
Alloys
Titanium
Zirconium

Figure

• 

  Fig. 1 Schematic diagrams of (A) the wax cylinder and disk, (B) the denture base resin on the disk, and (C) the shear bond strength test.

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  Fig. 2 SEM micrographs of the Co-Cr surface (group C) and ZrN coating surface (group CZ). A) group C (×200), B) group C (×500), C) group CZ (×200), D) group CZ (×500).

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  Fig. 3 SEM micrographs of the Ti surface (group T) and ZrN coating surface (group TZ). A) group T (×200), B) group T (×500), C) group TZ (×200), D) group TZ (×500).

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  Fig. 4 SEM photomicrographs Co-Cr alloy specimens after shear bonding stress test. (A) group C mixed fracture (×200), (B) group C mixed fracture (×500), (C) group C mixed fracture (×200), (D) group C mixed fracture (×500), (E) group CZ adhesive fracture (×200), (F) group CZ adhesive fracture (×500), (G) group CZ mixed fracture (×200), (H) group CZ mixed fracture (×500).

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  Fig. 5 SEM photomicrographs Ti-6Al-4V specimens after shear bonding stress test. (A) group T mixed fracture (×200), (B) group T mixed fracture (×500), (C) group T mixed fracture (×200), (D) group T mixed fracture (×500), (E) group TZ adhesive fracture (×200), (F) group TZ adhesive fracture (×500), (G) group TZ mixed fracture (×200), (H) group TZ mixed fracture (×500).

Reference

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