지르코니아 표면처리가 골유착에 미치는 영향
Investigation of effect of zirconia on osseointegration by surface treatments
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초록
목적: 본연구의 목적은 다양한 산용액을 이용하여 지르코니아의 표면을 처리하여 표면의 양상과 골유착에 미치는 영향을 알아보는 것이다. 연구 재료 및 방법: 준비된 지르코니아 디스크에 다양한 산용액 및 광촉매 산부식을 이용하여 표면을 처리하였다. 각 시편을 SEM으로 관찰하고, 골유착을 관찰하기 위해 MC3T3E-1 세포를 이용하여 형광염색과 역전사 중합효소 연쇄반응을 통해 평가하였다. 결과: 처리한 방법에 따라 다양한 거칠기를 보였다. 불산처리군은 표면의 거칠기가 증가하였으나 약한 네트워크 구조를가지고 있었다. 골유착능에서는 광촉매 산부식을 시행한 군에서 더 좋은 결과를 보였다(P < 0.05). 결론: 지르코니아를 광촉매 산부식방법으로 처리할 경우 다른 산처리방법에 비해 골유착능을 높이는데 효과적일 것으로 사료된다.
Abstract
Purpose: The aim of this study was to investigate effect of zirconia on osseointegration and Surface appearance by surface treatments using various acid solution. Materials and Methods: The prepared zirconia disks were treated with hydrofluoric acid solution and photo-assisted etching under various condition. The surface was analyzed by SEM and the surface roughness was analyzed by using surface profiler. The osteogenic effect of MC3T3-E1 cells was assessed via fluorescent staining observation and reverse transcriptase-polymerase chain reaction (RT-PCR). Results: Various roughness were obtained according to the surface treatment method. The surface roughness increased in the group treated with hydrofluoric acid solution, but that had week network structure. In the method using photo-assisted etching, the surface roughness increased in micro units. Cell reaction showed better results in the photo-assisted etching group than in the hydrofluoric acid-treated group (P < 0.05). And it showed even osteoblastic cell distribution in photo-assisted etching group. Conclusion: As a result, the photo-assisted etching method is more effective than the simple acid solution treatment for zirconia treatment for osseointegration. (J Dent Rehabil Appl Sci 2021;37(1):23-30)
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