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수종의 수복재의 불소 적용법에 따른 불소 유리에 관한 비교 연구

Comparative study on fluoride release and re-uptake capacity of several fluoride-releasingrestorative materials

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참고문헌

키워드

주제분류치의학

초록

불소는 구강내에서 치아 우식의 예방 및 초기 우식의 재광화를 유도하기 위한 목적으로 널리 사용되고 있으며, 불소가 유리되는 수복물을 이용하게 되면, 수복물 주위의 이차 우식 및 구강내의 우식 감수성을 감소시킬 수 있다. 현재 소아치과 영역에서 주로 사용되고 있는 불소유리 수복재로는, 전통적인 글라스 아이오노머와 레진 강화형 글라스 아이오노머, 컴포머등이 있는데, 본 연구에서는 현재 소아치과 영역에서 많이 사용되고 있는 불소를 유리하는 수복재의 불소 유리량 및 불소 적용방법에 따른 불소유리량의 변화를 비교하고 확인하고자 한다. 복합레진으로 Z-250TM(Group Ⅰ)과 컴포머로 DyractⓇ AP(Group Ⅱ), 레진 강화형 글라스 아이오노머로 Fuji II LCⓇ(Group Ⅲ), 자가중합형 글라스 아이오노머로 Fuji IX GP FastⓇ(Group Ⅳ)를 실험대상으로 선정하였다. 각 재료별로 동일한 크기의 디스크를 제작하여, 31일 동안 매일 새로운 용액으로 교환하면서 불소 유리량을 측정하였다(실험 Ⅰ). 이후 수복 재료별로 불소 적용 방법에 따라 4군으로 나누는데, A군은 대조군(No treatment)으로, B군은 불소가 함유된 치약(500ppm, Stages, Oral-BⓇ, Holland)을 3분간 3회 적용하고, C군은 1.23% APF Foam(1000ppm, Sultan Topex, #31150, Canada)을 1회 적용하며, D군은 B군과 동일한 치약을 3회 적용하고, 1.23% APF Foam을 1회 적용하였다. 불소 적용 후 7일 동안 불소 유리량을 측정하였다(실험 Ⅱ). 실험 I에서, 실험 개시일부터 7일까지 불소 유리량이 급속히 감소하고, 이후 일정한 불소 유리량을 보였다. Ⅲ군 (Fuji II-LCⓇ)과 IV군 (Fuji IX GP FastⓇ)이 다른 군에 비해 높은 불소 유리량을 보였으며, Ⅲ군과 IV군 사이에서는 유의한 차이를 보아지 않았다. 실험 II에서, 불소 적용 후 II, Ⅲ, IV군에서 불소 유리량이 증가한 양상을 보이는데, II군에서는 불소 적용 후 2일, Ⅲ군에서는 5일, IV군에서는 4일부터 초기 불소 유리량 수준으로 돌아갔다.

Abstract

Fluoride released from dental restorative materials effectively declines the incidence and activity of dental caries and inhibits tooth demineralization. This study investigated the fluoride release and uptake characteristics of one composite resin (Z-250TM)three glass ionomer-based restorative material (DyractⓇ AP, Fuji II LCⓇ, Fuji IX GP FastⓇ). Forty discs(6 mm diameter and 1 mm height) were prepared for each material. Each disc was immersed in 5ml of distilled water within polyethylene vial and stored at 37℃. The distilled water was changed every 24 hours and the release of fluoride was measured for 31 days. At the end of this period, each specimen was subjected to one of four treatments : (A) no fluoride treatment (control); (B) application of a fluoride dentifrice (500ppm) for three minutes three times; (C) application of the 1.23% acidulated phosphate fluoride(APF) foam for one minute once; (D) the same regimen as (B), plus application of the APF foam for one minute once. Then, all samples were reassessed for an additional 7 days. For all samples, the greatest fluoride release was observed after the first day of the study but diminished with time. On the 7th day of the study, fluoride release level was stabilized. Fuji II LCⓇ and Fiji IX GP FastⓇ released higher amount of fluoride than other materials; however, no statistically significant difference was found from Fuji II LCⓇ and Fiji IX GP FastⓇ. The amount of fluoride of DyractⓇ AP, Fuji II LCⓇ and Fuji IX GP FastⓇ was increased after fluoride treatment, and diminished with time.

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