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J Korean Acad Pediatr Dent. 2002;29(4): 592-599.
THE EFFECT OF LIGHT CURING METHODS AND RESIN ADHESIVES ON THE MICROLEAKAGE OF RESTORATIONS IN PRIMARY TEETH
정영남, 김대업, 이광희
원광대학교 치과대학 소아치과학교실.원광치의학연구소
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ABSTRACT
Objective : The purpose of this study was to evaluate the effects of several light curing methods and several adhesives on the microleakage of composite resin restorations in primary teeth. Materials and methods : In 150 extracted human primary anterior teeth, O-shaped cavities were prepared in the labial surface ; the cavity diameter and depth were 1.6mm. The cavities were filled with light-activated composite resin, Compoglass. Four kinds of adhesives were used. Each filling materials were polymerized with three light cure methods. The restorations were polished using Sof-Lex discs(3M Co., USA). The samples were thermocycled 1,000 times between 5℃ and 55℃ with a 1-minute dwell time. Then, they were immersed in a 2% methylene blue solution(pH 7) for 12hours. Subsequently they were sectioned labio-lingually through the center of the restoration with a diamond saw at low speed with a water coolant, and evaluated by stereomicroscopy. Microleakage analyses were done, using scores from 0 to 4. Results : Results showed the least microleakage in Compoglass group(P<0.05). There were less microleakage in SBMP group among the adhesive groups, but no significant difference was observed(P>0.05). And there were no significant differences among the groups depending on curing methods(P>0.05).
Keywords: Primary teeth; Microleakage | Composite resin | Compomer | Resin adhesives | Light curing
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