Journal of the Korean Academy of Pediatric Dentistry 1996;23(4):899-905.
Published online November 30, 1996.
MICROLEAKAGE OF COMPOSITE RESINS POLYMERIZED WITH ARGON LASER AND VISIBLE LIGHT
 
Abstract
For the purpose of evaluation of microleakage of class V resin restoration, 64 extracted bovine teeth were filled with two kinds of light curing composite resins(Z-100, Clearfil) and polymerized with 40 seconds of visible light and with 10 seconds of argon laser. After 1000 thermocycling(5℃/55℃), specimens were placed in 1 % methylen blue dye solution for 72 hours in 37℃ water bath. The specimens were sectioned at center of filling body and the degree of dye penetration was observed with a stereomicroscope. The following results were obtained, 1. Differences of the microleakage of resin restorations polymerized with 10 seconds of argon laser and 40 seconds of visible light were statistically insignificant. 2. There was more microleakage in Z-100 than clearfil and there was a statistical significancy (p<0.05).


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