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Investigation of effect of zirconia on physical property and osseointegration by surface treatments
EAO Online Library. Song Y. Oct 9, 2018; 232649; P-BR-96
Young-Gyun Song
Young-Gyun Song
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Abstract
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Zirconia implants are somewhat new to the implant arena. In the US, we have been using Zirconia for implants since the late 1980’s while we have been using Titanium for dental implants since the 1960’s. Both materials are biocompatible offering high acceptance rates with the body promoting Osseointegration. But, there are not many studies of surface treatment on zirconia implants, because titanium implants are common. The aim of this study was to investigate effect of zirconia on osseointegration and physical properties by surface treatments using various acid solution, and to suggest the optimum conditions for application in clinical treatment on the basis of the results.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 surfaceprofiler. The osteogenic effect of MC3T3-E1 cells was assessed via cell counting and reverse transcriptase-polymerase chain reaction (RT-PCR). **Various roughnesses were obtained according to the surface treatment method. The surface roughness increased in the group treated with hydrofluoric acid solution, but the aspect of roughness increased in nano units. 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). **As a result, the photo-assisted etching method is more effective than the simple hydrofluoric acid solution treatment for zirconia treatment for osseointegration.
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