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양극 산화에 의해 티타늄 표면에 형성된 산화 피막이 세포 부착 및 성장에 미치는 영향
노세라,이용렬,송호준,박영준,Noh, Se-Ra,Lee, Yong-Ryeol,Song, Ho-Jun,Park, Yeong-Joon 한국재료학회 2006 한국재료학회지 Vol.16 No.10
This study was purposed to evaluate the influence of anodically oxidized film on titanium (Ti) onto MG-63 osteoblast-like cell attachment and activity. Only scratch lines created by polishing were seen in ASR and ANO-1 groups. About $1.5{\mu}m$-thick homogeneous oxide film which has pores of about $0.5{\mu}m$ diameter were formed in ANO-12. The crystalline structure of the oxide films formed by anodization in phosphoric acid electrolyte was $TiP_2O_7$. The total protein amounts of ANO-1 and ANO-12 groups showed higher values of maximum protein amount than that of AS-R group. At 3 days of incubation, total protein amount showed higher value in ANO-2 when comparing to that of AS-R (p<0.05). Based on the results of ALPase activity test, the degree of MG-63 cell differentiation for initial mineralization matrix formation was similar. For all the test groups after 1 day of incubation, MG-63 cells grew healthily in mono-layer with dendritic extensions. After incubation for 3 days, the specimen surfaces were covered more densely by cells, and numerous micro filaments were extruding to the extracellular matrix.
Micro-computed tomography 영상을 이용한 치아의 컴퓨터 3차원 모델 생성 및 유한요소 분석에의 응용
노세라 ( Se Ra Noh ),김명수 ( Myong Soo Kim ) 조선대학교 치의학연구원 2013 Oral Biology Research (Oral Biol Res) Vol.37 No.2
Purpose: Among mechanical stress analysis methods of teeth and prosthetic appliances, finite element analysis using computer generated 3-dimensional models has been widely applied. We tested a new method to generate 3-dimensional tooth models which can be applied to finite element analysis. Materials and Methods: Three-dimensional tooth models were generated from micro-computer tomography images using 3-dimensional graphic software and computer aided design (CAD) software, and the models were applied to finite element analysis. Results: The models generated using this method better mimicked the anatomical structure of natural teeth than those generated by other methods. As a sample case, a 3-dimensional model of an upper first molar tooth with a class I cavity was generated using 3-dimensional CAD software. Finite element analysis was carried out using this model by assuming that the cavity was filled with three different materials. Conclusion: The method used in the present study yielded high-quality 3-dimensional models of teeth that can easily be applied to mechanical stress analysis using finite element analysis and other dental applications.