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KMID : 0362420130510020073
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Journal of Korean Academy of Prosthodontics
2013 Volume.51 No. 2 p.73 ~ p.81
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The effect of surface treatment conditioning on shear bond strength between zirconia and dental resin cements
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Kim Ji-Hae
Seo Jae-Min
Ahn Seung-Geun
Park Ju-Mi
Song Kwang-Yeob
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Abstract
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PURPOSE: The purpose of this study was to evaluate the effect of surface treatment on the shear bond strength of zirconia ceramic to 3 resin cements.
MATERIALS AND METHODS: A total of 143 disk-shaped Zirconia blocks (HASS Co., Gangneung, Korea) were randomly divided into three treatment groups: (1) only 50 ㎛ Al2O3 sandblasting, (2) 50 ㎛ Al2O3 sandblast and zircona liner, (3) 50 ㎛ Al2O3 sandblasting and Rocatec (3M ESPE, Seefeld, Germany). Bistite II (Tokuyama Dental Co., Japan), Panavia F (Kuraray Medical, Japan), and Superbond C&B (Sun Medical, Japan) were used to cement onto the zirconia. After 24h of storage in distilled water, shear bond strength was evaluated. High value group was re-tested after thermocycling at 5,000 cycles(5-55℃). Shear bond strength data were analyzed with one-way ANOVA, two-way ANOVA test and Post Hoc Test (α=.05). Shear bond strength data before and after thermocycling were analyzed with Independent sample T test (α=.05).
RESULTS: Super-bond C&B treated with Rocatec showed the most high shear bond strength. Super-bond C&B groups resulted in significantly higher than other cement groups (P<.05). Rocatec groups resulted in significantly higher than other surface treatment groups (P<.05). Shear bond strength has increased in Panavia F treated with Zirconia liner (P<.05). After thermocycling, shear bond strength was increased in Super-bond C&B treated with Rocatec but decreased in other groups (P<.05).
CONCLUSION: Super-bond C&B cement resulted the highest shear bond strength and Rocatec system enhanced the shear bond strength. After thermocycling, shear bond strength has decreased in most resin cements except Super-bond C&B treated with Rocatec.
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KEYWORD
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Zirconia, Shear bond strength, Sandblasting, Zirconia liner, Rocatec
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