기존의 임플란트 코팅물질로 사용되는 Hydroxyapatite는 체내에서 코팅층이 박리되는 문제가 있어 이를 극복하고자 Plasma Spray법을 이용하여 Bioglass 세라믹을 치과용 임플란트에 코팅하였다. 이 임플란트를 시술함으로써 시술시간을 단축시키고 환자에게 부담을 감소시킨다. 또한 Hydroxyapatite보다 생체활성도가 우수하여 빠른 골유착이 일어난다. 또한 기존의 Bioglass의 단점인 체내에서의 빠른 용출 문제와 어려운 제조공정을 극복하기 위해 상용되는 물유리를 기반으로 ...
기존의 임플란트 코팅물질로 사용되는 Hydroxyapatite는 체내에서 코팅층이 박리되는 문제가 있어 이를 극복하고자 Plasma Spray법을 이용하여 Bioglass 세라믹을 치과용 임플란트에 코팅하였다. 이 임플란트를 시술함으로써 시술시간을 단축시키고 환자에게 부담을 감소시킨다. 또한 Hydroxyapatite보다 생체활성도가 우수하여 빠른 골유착이 일어난다. 또한 기존의 Bioglass의 단점인 체내에서의 빠른 용출 문제와 어려운 제조공정을 극복하기 위해 상용되는 물유리를 기반으로 침전법을 이용하여 더욱 쉽고 빠르게 만들수 있다. 또한 열처리를 통한 결정화로 용출속도를 늦추었다. 코팅법은 Plasma Spray를 이용하여 빠르고 균질하게 코팅할 수 있어 대량생산에도 용이하다. 실험 결과, 세포독성시험에서 이상이 없었고 SEM을 통해 표면이 균일하게 코팅되었음을 확인할 수 있었다. 또한 코팅 후에도 Bioglass ceramic의 성분이 변하지 않았음을 XRD로 확인하였다.
기존의 임플란트 코팅물질로 사용되는 Hydroxyapatite는 체내에서 코팅층이 박리되는 문제가 있어 이를 극복하고자 Plasma Spray법을 이용하여 Bioglass 세라믹을 치과용 임플란트에 코팅하였다. 이 임플란트를 시술함으로써 시술시간을 단축시키고 환자에게 부담을 감소시킨다. 또한 Hydroxyapatite보다 생체활성도가 우수하여 빠른 골유착이 일어난다. 또한 기존의 Bioglass의 단점인 체내에서의 빠른 용출 문제와 어려운 제조공정을 극복하기 위해 상용되는 물유리를 기반으로 침전법을 이용하여 더욱 쉽고 빠르게 만들수 있다. 또한 열처리를 통한 결정화로 용출속도를 늦추었다. 코팅법은 Plasma Spray를 이용하여 빠르고 균질하게 코팅할 수 있어 대량생산에도 용이하다. 실험 결과, 세포독성시험에서 이상이 없었고 SEM을 통해 표면이 균일하게 코팅되었음을 확인할 수 있었다. 또한 코팅 후에도 Bioglass ceramic의 성분이 변하지 않았음을 XRD로 확인하였다.
In this study, bioactive bioglass(45S5) ceramic powder was coated on Ti surface. The new synthetic method of bioglass ceramic was developed at Yeungnam University using a commercial water-glass by adding bioglass 67 elements. Therefore, the bioglass ceramic materials can be manufactured by relativel...
In this study, bioactive bioglass(45S5) ceramic powder was coated on Ti surface. The new synthetic method of bioglass ceramic was developed at Yeungnam University using a commercial water-glass by adding bioglass 67 elements. Therefore, the bioglass ceramic materials can be manufactured by relatively simple and inexpensive process. Prior to plasma spray coating, the bioglass ceramic granules were washed with alcohol to obtain the high flowability during plasma spray coating. The washed granules was about 30-50 μm size. Then, plasma coating was conducted by Won Jin Thermal Spray Co,. LTD. The coating layer of bioglass ceramic was characterized using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffractometer (XRD). It was found that the coated bioglass ceramic layer was well bonded on Ti substrate. Average of the coated layer was 15.2 μm. Based on XRD analysis, sodium calcium silicate (Na6Ca3Si6O18) and sodium calcium phosphate peaks were detected as the major crystalline phase of bioglass ceramic. Adhesion strength between coating layer and Ti substrate was measured with tensile test machine by following ASTM C-633 standard with. The average adhesion strength was 16.193 MPa. In order to measure the bioactivity of bioglass coated Ti, the samples were soaked in a simulated body fluid (SBF). And it was found that the amount of 68 HA formed on the coated surface increased with the duration period of soaking in SBF. The HA covered the whole surface of the coated layer after soaking in SBF at 5 days. In addition, the bioglass ceramic material was found to be non-toxic after cytotoxicity test.
In this study, bioactive bioglass(45S5) ceramic powder was coated on Ti surface. The new synthetic method of bioglass ceramic was developed at Yeungnam University using a commercial water-glass by adding bioglass 67 elements. Therefore, the bioglass ceramic materials can be manufactured by relatively simple and inexpensive process. Prior to plasma spray coating, the bioglass ceramic granules were washed with alcohol to obtain the high flowability during plasma spray coating. The washed granules was about 30-50 μm size. Then, plasma coating was conducted by Won Jin Thermal Spray Co,. LTD. The coating layer of bioglass ceramic was characterized using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffractometer (XRD). It was found that the coated bioglass ceramic layer was well bonded on Ti substrate. Average of the coated layer was 15.2 μm. Based on XRD analysis, sodium calcium silicate (Na6Ca3Si6O18) and sodium calcium phosphate peaks were detected as the major crystalline phase of bioglass ceramic. Adhesion strength between coating layer and Ti substrate was measured with tensile test machine by following ASTM C-633 standard with. The average adhesion strength was 16.193 MPa. In order to measure the bioactivity of bioglass coated Ti, the samples were soaked in a simulated body fluid (SBF). And it was found that the amount of 68 HA formed on the coated surface increased with the duration period of soaking in SBF. The HA covered the whole surface of the coated layer after soaking in SBF at 5 days. In addition, the bioglass ceramic material was found to be non-toxic after cytotoxicity test.
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