AN IN VITRO STUDY OF MICROLEAKAGE OF COMPOSITE RESINS

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Journal of the Korean Academy of Pediatric Dentistry 2003;30(4):593-599.
Published online November 30, 2003.

AN IN VITRO STUDY OF MICROLEAKAGE OF COMPOSITE RESINS

복합레진의 미세누출에 관한 연구

이선영, 양연미, 백병주, 전철완, 김재곤

전북대학교 치과대학 소아치과학교실 및 구강생체과학연구소

Correspondence: ,

Abstract

The purposes of this study were to evaluate the microleakage of class V composite resin restorations utilizing the different curing lights, to assess the flowable resin, Filtek^TMFlow (3M Dental Products, USA) and composite resin, Filtek^TM Z250(3M Dental Products, USA) which need 20s curing time for halogen light could replace Z100^TM Restorative(3M Dental Products, USA) for the microleakage, and to evaluate the effect of adhesive resin on marginal microleakage. Light curing units used in this study were conventional halogen light, XL3000(3M Dental Products, USA) and plasma arc light, Flipo(Lokki, France). Class V cavities were prepared and each cavity was filled with each composite resin. After being filled, the teeth were stored in distilled water, polished, thermocycled and soaked in 1% methylene blue solution. Following results were obtained from evaluation of the sectioned surface. 1. There was no statistically significant difference in microleakage of Filtek^TMFlow and Filk^TMZ250 between two kinds of curing units(p>0.05). 2. Flowable resin, Filtek^TMFlow showed more microleakage than Z100 and Filtek^TMZ250 regardless of curing units(p<0.05). 3. Adhesive resin reduced the microleakage of composite resin in both halogen light and plasma arc light(p<0.05).

Key Words: Microleakage, Composite resin, Halogen light, Plasma light, Adhesive resin