복합레진 표면에 때한 APF gel의 영향
Effect of APF gel on the surface of composite resin
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초록
소아의 치아우식증을 예방하기 위한 불소의 국소도포는 소아치과 영역에서 널리 시행되고 있다. 하지만 이러한 잇점에도 불구하고 최근 수복물 표면을 거칠게 한다는 부작용에 대해 논란이 되고 있다. 이에 본 연구에서는 불소도포가 심미 수복물의 표면변화에 미치는 영향을 평가하기 위해 수종의 복합레진에 국소도포용 불소젤을 도포시킨 후 변화를 관찰하였다. 시판용 레진인 Z 250(3M ESPE, USA), Ultraseal XTⓇ(Ultradent, USA), Filtek flowⓇ(3M, USA), RevolutionⓇ(Kerr, USA), DenfilⓇ(Vericom, Korea)를 이용하여 시편을 제작하고, 불소젤은 TopexⓇ(Sultan Dental Products, Canada)을 각각 1분과 4분동안 도포시켰다. 각 제품마다 불소젤을 도포하지 않은 5개의 시편을 대조군으로 사용하였다. 그 후 이 시편들의 표면 거칠기(Ra value, µm)와 무게 차이를 측정하고 주사전자현미경을 이용하여 다음과 같은 결과를 얻었다. 1. 불소젤을 도포시키지 않은 대조군에서 가장 평활한 표면을 보였으며 1분군, 4분 군 순으로 표면 거칠기가 증가하였다. 그리고 Revolution을 제외한 모든 제품에서 유의한 차이를 보였다(p<0.05). 2. 국소도포용 불소젤을 도포한 각 레진 시편의 무게 차이를 비교한 결과 대조군, 1분군, 4분군 간에 유의한 차이는 없었다(p>0.05). 3. 주사전자현미경 관찰시 불소젤에 도포시킨 실험군은 대조군에 비해 거친 표 면을 나타냈다. 이상의 결과로 국소적 불소도포는 복합레진의 표면 거칠기에 영향을 미치며 이를 고려하여 사용한다면 4분보다는 1분간의 불소도포법을 이용하는 것을 추천할 수 있을 것으로 사료된다.
Abstract
Topical fluoride application for children is a widely performed procedure in the field of pediatric dentistry to prevent dental caries. However, it is recently recognized as having some unwanted effects on several esthetic restorative materials as it roughens the surface of the restorative materials. The aim of this study was to evaluate the surface changes in composite resins to topical fluoride. Composite resins(Z 250Ⓡ, Ultraseal XTⓇ, Filtek flowⓇ, RevolutionⓇ, DenfilⓇ) in topical fluoride agents were immersed and their surface roughness, weight loss and SEM were evaluated. The results were as follows: 1. The 4 minutes-immersion groups showed more roughened surface than 1 minute-immersion groups and the control groups showed the smoothest surface among all the materials, and there was statistically significant difference except the revolution between the groups. 2. There was no significant difference between the 1 minute-immersion groups and 4 minutes-immersion groups in weight loss. 3. The experimental group treated with topical fluoride gel showed the generally mere roughened surface than control group in the SEM findings.
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