Surface Hardness of Resin Cement Polymerized under Different Ceramic Materials | Zendy

Pimmada Kesrak | Zendy; KeunWoo Lee | Zendy

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Surface Hardness of Resin Cement Polymerized under Different Ceramic Materials

Author(s) -

Pimmada Kesrak,

KeunWoo Lee

Publication year - 2012

Publication title -

international journal of dentistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.61

H-Index - 33

eISSN - 1687-8736

pISSN - 1687-8728

DOI - 10.1155/2012/317509

Subject(s) - knoop hardness test , ceramic , composite material , materials science , polymerization , cement , indentation hardness , acrylic resin , veneer , polymer , microstructure , coating

Objectives . To evaluate the surface hardness of two light-cured resin cements polymerized under different ceramic discs. Methods . 40 experimental groups of 2 light-cured resin cement specimens (Variolink Veneer and NX3) were prepared and polymerized under 5 different ceramic discs (IPS e.max Press HT, LT, MO, HO, and Cercon) of 4 thicknesses (0.5, 1.0, 1.5, and 2.0 mm), Those directly activated of both resin cements were used as control. After light activation and 37°C storage in an incubator, Knoop hardness measurements were obtained at the bottom. The data were analyzed with three-way ANOVA, t -test, and one-way ANOVA. Results . The KHN of NX3 was of significantly higher than that of Variolink Veneer ( P < 0.05). The KHN of resin cement polymerized under different ceramic types and thicknesses was significant difference ( P < 0.05). Conclusion . Resin cements polymerized under different ceramic materials and thicknesses showed statistically significant differences in KHN.

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