J Adv Prosthodont.  2017 Apr;9(2):118-123. 10.4047/jap.2017.9.2.118.

The effect of plasma on shear bond strength between resin cement and colored zirconia

• Park C
• Yoo SH
• Park SW
• Yun KD
• Ji MK
• Shin JH
• Lim HP

• KMID: 2376299
• DOI: http://doi.org/10.4047/jap.2017.9.2.118

Abstract

PURPOSE
To investigate the effect of non-thermal atmospheric pressure plasma (NTAPP) treatment on shear bond strength (SBS) between resin cement and colored zirconia made with metal chlorides.
MATERIALS AND METHODS
60 zirconia specimens were divided into 3 groups using coloring liquid. Each group was divided again into 2 sub-groups using plasma treatment; the experimental group was treated with plasma, and the control group was untreated. The sub-groups were: N (non-colored), C (0.1 wt% aqueous chromium chloride solution), M (0.1 wt% aqueous molybdenum chloride solution), NP (non-colored with plasma), CP (0.1 wt% aqueous chromium chloride solution with plasma), and MP (0.1 wt% aqueous molybdenum chloride solution with plasma). Composite resin cylinders were bonded to zirconia specimens with MDP-based resin cement, and SBS was measured using a universal testing machine. All data was analyzed statistically using a 2-way ANOVA test and a Tukey test.
RESULTS
SBS significantly increased when specimens were treated with NTAPP regardless of coloring (P<.001). Colored zirconia containing molybdenum showed the highest value of SBS, regardless of NTAPP. The molybdenum group showed the highest SBS, whereas the chromium group showed the lowest.
CONCLUSION
NTAPP may increase the SBS of colored zirconia and resin cement. The NTAPP effect on SBS is not influenced by the presence of zirconia coloring.

Keyword

Colored zirconia; Non-thermal atmospheric pressure plasma (NTAPP); Shear bond strength (SBS)

MeSH Terms

Chlorides
Chromium
Molybdenum
Plasma Gases
Plasma*
Resin Cements*
Chlorides
Chromium
Molybdenum
Plasma Gases
Resin Cements

Figure

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  Fig. 1 Experimental groups. (A) Uncolored zirconia, (B) 0.1 wt% chromium coloring liquid, (C) 0.1 wt% molybdenum coloring liquid.

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  Fig. 2 Process of shear bond strength test. (A) Composite resin cylinder cemented on zirconia disc, (B) Universal testing machine.

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  Fig. 3 Result of Tukey HSD test for shear bond strength before plasma treatment (*: significant at P < .05, **: significant at P < .001).

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  Fig. 4 Result of Tukey HSD test for shear bond strength after plasma treatment (*: significant at P < .05).

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  Fig. 5 Result of Independent t-test for shear bond strength (**: significant at P < .001).

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  Fig. 6 SEM representative image of specimen fractured surfaces (×180 magnification). (A) Non-colored, (B) Non-colored with plasma, (C) Chromium colored, (D) Chromium colored with plasma, (E) Molybdenum colored, (F) Molybdenum colored with plasma (R is composite resin, Z is zirconia specimen).

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