구강양치용액이 복합레진의 색조 안정성과 표면미세경도 및 표면조도에 미치는 영향
The Effect of Oral rinsing solution on the color stability and Surface Microhardness, Surface Roughness change of Composite Resin.
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초록
본 연구는 구강양치용액이 복합레진의 색조 안정성과 표면미세경도 및 표면조도에 미치는 영향에 대하여 알아보고자 하였으며, 실험실 연구로 Filtek P60과 Filtek Z250의 두 종류의 복합레진으로 시편을 제작하였다. 각 시편은 10개씩 8개 그룹으로 나누었다. 실험전 모든 시편을 colorimater를 이용하여 색조(L*, a*, b*)를 측정하였다. 대조군으로 증류수, 실험군으로 무색소, 녹색 및 보라색을 띄는 시판 구강양치용액을 사용하여 14일간 색변화, 표면미세경도, 표면조도 등을 측정하여 수집된 자료들 분석하였다. 녹색 및 보라색을 띄는 구강양치용액에서 눈에 띄는 색변화를 보였고, 모든 구강양치용액군에서 표면미세경도는 감소하고 표면조도는 거칠어진 양상이 관찰되었다. 따라서 구강양치용액을 2주 이상 장기간 사용하게 되면 복합레진 표면에 변화를 야기할 수 있으므로, 안전한 사용을 위하여 짧은 기간 사용을 권장해야 할 것으로 사료된다.
Abstract
This study aimed to evaluate the effects of oral rinsing solution on the color stability, surface microhardness and surface roughness change of composite resin. In this in-vitro study, 80 disc-shaped specimens were fabricated of Filtek P60 and Filtek Z250(A2 shade). The samples of each group were randomly divided into eight subgroups (n=10). The baseline color values (L*, a*, b*) of each specimen were measured according to CIE LAB system using a colorimeter. After baseline color measurements, the control samples were immersed in distilled water and the test groups were immersed colorless, green and purple mouthrinses three times a day for thirty minutes. This process was repeated for two weeks. Green and purple oral rinsing solutions displayed color, microhardness and roughness change of all composite resin after immersion in the mouthrinses. Therefore, prescription of oral rinsing solution for a minimum of two weeks is a common practice, which may cause discoloration of aesthetic composite restorations of patients.
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