MICROLEAKAGE OF COMPOSITE RESINS POLYMERIZED WITH ARGON LASER AND VISIBLE LIGHT

,; ,; ,

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

가시광선과 아르곤 레이저로 복합레진 중합시 미세누출에 관한 비교 연구

장기택, 정태련, 김종철

서울대학교 치과대학 소아치과학교실

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).