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KMID : 1023820170090020104
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The Journal of Advanced Prosthodontics
2017 Volume.9 No. 2 p.104 ~ p.109
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Acid etching of glass-infiltrated zirconia and its biological response
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Vu Van Thi
Oh Gye-Jeong
Yun Kwi-Dug
Lim Hyun-Pil
Kim Ji-Won
Nguyen Thao Phuong Thi
Park Sang-Won
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Abstract
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PURPOSE: The purpose of this study was to evaluate the influence of acid etching treatment on surface characteristics and biological response of glass-infiltrated zirconia.
MATERIALS AND METHODS: A hundred zirconia specimens were divided into four groups depending on surface treatments: untreated zirconia (group Z); acid-etched zirconia (group ZE); glass-infiltrated zirconia (group ZG); and glass-infiltrated and acid-etched zirconia (group ZGE). Surface roughness, surface topography, surface morphology, and Vickers hardness of specimens were evaluated. For biological response test, MC3T3-E1 cell attachment and proliferation on surface of the specimens were examined. The data were statistically analyzed using one-way ANOVA and Tukey's HSD test at a significance level of 0.05.
RESULTS: Group ZGE showed the highest surface roughness (Ra = 1.54 μm) compared with other groups (P < .05). Meanwhile, the hardness of group Z was significantly higher than those of other groups (P < .05). Cell attachment and cell proliferation were significantly higher in group ZGE (P < .05).
CONCLUSION: We concluded that effective surface roughness on zirconia could be made by acid etching treatment after glass infiltration. This surface showed significantly enhanced osteoblast cell response.
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KEYWORD
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Zirconia, Roughness, Glass infiltration, Acid etching, Biological response
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