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KMID : 0358920060330030422
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Journal of the Korean Academy of Pedodontics
2006 Volume.33 No. 3 p.422 ~ p.428
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Microleakage of 7th generation dentin bonding system
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Lee Sang-Yup
Lee Kwang-Hee
Kim Dae-Eop
Ra Ji-Young
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Abstract
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Dentin bonding system have recently been developed in an effort to simplify and shorten bonding procedure. The intent of this study was to evaluate microleakage of newer generation of dentin bonding system comparing with other generations. Forty extracted human premolar teeth were randomly assigned to four groups for bonding : the 4th generation bonding system (Scotchbond Multi-Purpose). the 5th generation bonding system (Clearfil SE Bond), 6th generation bonding system (AQ bond) and 7th generation bonding system(i-bond)^{TM} Class V cavities were prepared in buccal and lingual surface. The cavities were restored with composite resin (Z100) after the application of dentin bonding systems according to the instructions of the manufacturer Samples were thermocycled and immersed in methylene blue dye(2%). Each sample was sectioned with Isomet and evaluated for microleakage using stereomicroscopy. The mean value of the microleakage in 7th generation bonding system was greater than those of 4, 5, 6th generation dentin bonding system. Statistically, the mean values of microleakage between 4th and 7th generation bonding system were significantly different from each other (p<0.05).
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KEYWORD
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7th generation dentin bonding system, Microleakage, Resin composite
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