Restorative Dentistry and Endodontics
- 제26권6호
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- Pages.492-498
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- 2001
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
백악질 변연을 갖는 2급 와동에 충전된 4종 복합레진의 미세누출
MICROLEAKAGE OF 4 DIFFERENT COMPOSITE RESIN RESTORATIONS IN CLASS II CAVITY WITH CEMENTAL MARGIN
초록
The purpose of this study was to evaluate four different composite resins in vitro for microleakage in Class II box type restorations that have gingival margins apical to the cementoenamel junction. Forty caries free extracted human molars were used in this study. The Class II cavities were prepared 1.0mm below cementoenamel junction with a #701 carbide bur. The teeth were randomly divided into four groups, each group comprising 20 treated cavities according to adhesives and filling materials ; Group 1: Scotchbond Multipurpose/Z 100. Group 2: Ariston Liner/Ariston pHc, Group 3: One Step/Pyramid, Group 4: Prime & Bond NT/SureFil. To simulate the clinical situation during restoration placement, a restoration template was fabricated and composite resin was filled using a three sited light-curing incremental technique. The specimens were stored in the 100% humidity for 7 days prior to thermocycling. The specimens were immersed in 2% methylene blue dye solution for 24 hours and then embeded in transparent acrylic resin and sectioned mesiodistally with a diamond wheel saw. The degree of marginal leakage was scored under the stereomicroscope(