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수종의 저장 용액에서 나노필러를 함유한 복합레진의 필러의 용출량에 관한 연구

FILLER LEACHING FROM NANOFILLER-CONTAINED COMPOSITE RESIN IN VARIOUS MEDIA

김선미|최남기|양규호|허수경
대한소아치과학회 (The Korean Academy Of Pediatric Dentistry)|2009.02|대한소아치과학회지 (Journal of the Korean academy of pediatric dentistry)|제36권 제1호|pp. 62-70

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키워드

증류수Composite resin복합레진Nanofiller인공타액Artificial saliva나노필러0.1N NaOH필러 용출량Distilled waterFiller leaching
주제분류치의학

초록

본 연구는 최근 시판되고 있는 4종의 복합레진 Palfique Estelite sigma® (Tokuyama Dental Corp., Tokyo, Japan), Z-350® (3M ESPE, USA), Ceram X duo E3®, Ceram X duo D3® (Dentsply, Konstanz, Germany)이 3가지 액체 환 경에 노출될 때 시간에 따라 필러의 용출 양상이 변하는지 알아보고 이를 비교 분석하였다. 필러의 용출량을 평가하기 위해 내경 10mm, 두께 3mm인 테프론 몰드를 이용하여 시편을 제작하였다. 각각의 시편을 5ml의 0.1N NaOH 용액, 증류수, 인공타액이 담긴 폴리에틸렌 용기에 담구고 37℃ 오븐에서 보관하였다. Si, Ba의 용출량 을 알아보기 위해 ICP-AE 기기를 이용하여 0.1N NaOH 용액에 담군 시편은 2주 후에, 증류수와 인공타액에 담군 시편은 1 개월 간격으로 5회에 걸쳐 정량 분석하여 다음과 같은 결과를 얻었다. 1. 0.1N NaOH에서 필러의 용출량은 모든 시편에 대해서 유의하게 높았다 (p<.0.001). 2. 증류수에 저장하였을 때, Si 용출량은 Z-350가 가장 적고, 인공 타액에 저장하였을 때, Si 용출량은 Estelite에서 가장 적었다. 3. 저장용액에 따른 원소의 용출량에서 모두 유의한 평균차이를 보였다(p<.0.001) 4. 인공타액에 저장된 시편이 증류수에 저장된 시편보다 시간이 증가할수록 Ba와 Si의 용출량이 더 많았다. 5. 저장기간에 따른 필러의 용출량은 저장 용액 간, 재료 간에 유의한 상관관계를 보였다(p<.0001). 이상을 통해 나노필러를 함유한 복합레진이 수분환경에 노출되었을 때 필러 입자들의 지속적인 용출이 일어남을 확인할 수 있었다.

Abstract

The objective of this study was to measure the leaching of filler (Si, Ba) from nanofiller-contained composites (Palfique Estelite sigma® (Tokuyama Dental Corp., Tokyo, Japan), Z-350® (3M ESPE, USA), Ceram X duo E3®, D3® (Dentsply, Konstanz, Germany)) under different conditions. The samples used for the study of leachable components were made by insertion of the material into a circular mold, 10 mm in diameter and 3.0 mm high. Each specimen was placed in a disposable polystyrene vial containing 5 mL of distilled water, artificial saliva or 0.1N NaOH and kept in an oven at 37℃. ; water and artificial saliva - 150 days, 0.1N NaOH - 15days. Inductively coupled plasma atomic emission spectroscopy (ICP-AES) was used to determine the amount of Si and Ba in the test solutions. 1. Filler leaching was significantly great in 0.1N NaOH among all samples(p<.0.001). 2. When samples were stored in the distilled water, Estelite showed the lowest amount of Si leaching. When samples were stored in the artificial saliva, Z-350 showed the lowest amount of Si leaching. 3. There were significant differences in filler leaching between 3 storage medias and composite resins(p<.0.001). 4. Si and Ba leaching occurred in greater proportion when samples were stored in the artificial saliva than distilled water. 5. There were significant interactions in monthly filler leaching between leaching in artificial saliva and in distilled water, as well as the interaction between storage medium and filler(p<.0001). These results indicate that a continuous filler leaching of nanofiller-contained composite resins was in storing aqueous solutions under over time.

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