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KMID : 0358920060330020244
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Journal of the Korean Academy of Pedodontics
2006 Volume.33 No. 2 p.244 ~ p.252
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EVALUATION OF THREE FLOWABLE COMPOSITES AS PIT AND FISSURE SEALANTS WITHOUT USING BONDING AGENTS
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Kwon Ho-Beom
Kim Myoung-Jin
Shin Cheol-Hwan
Kim Ji-Yeon
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Abstract
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The aims of this study were to determine if flowable composites can be used as pit and fissure sealants without bonding agents. Three flowable composites(Filtek Flow, Tetric Flow, Charmfil Flow) and a filled sealant (Ultraseal XT plus) were used. The pattern of resin tag formation in the four sealant meterials were compared using SEM. For the microleakage assessment, 54 extracted human premolar teeth were randomly divided into 3 groups containing 18 premolars each. In each group, a conventional filled sealant and one of the three flowable composites were applied to occlusal fissures. The teeth were thermocycled(1200 cycles between 5˚± 2℃ and 55˚± 2℃ with a dwell time of 30 seconds) and immersed in a 1% methylene blue solution for 48 hours. Each tooth was sectioned and examined to determine the extent of dye penetration. Three flowable composites and a filled sealant showed a similar resin tag formation pattern. The three flowable composites showed significantly more microleakage in each group than the filled sealant. The level of microleakage was similar in the three flowable composites. Flowable composites are not recommended as pit and fissure sealants because more microleakage can occur even when occlural fissures are mechanically widened.
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KEYWORD
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Flowable composite, Pit and fissure sealant, Microleakage, SEM
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