支台歯石膏模型の消毒方法の研究　第１報　消毒液浸漬が石膏硬化体の表面粗さと表面微細構造に及ぼす影響

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  • A Study of a Method for Disinfection of Die Stone Cast. Part 1 Influence of Immersion in Disinfectant Solutions on Surface Roughness and Surface Microstructure of Set Gypsum.
  • Part 1 Influence of Immersion in Disinfectant Solutions on Surfa ce Roughness and Surface Microstructure of Set Gypsum
  • 第1報消毒液浸漬が石膏硬化体の表面粗さと表面微細構造に及ぼす影響

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To investigate the influence of disinfectant solution on the surface of gypsum, 3% glutaraldehyde, 10% formaldehyde, and water were prepared and surface roughness was observed by SEM.<BR>The results were as follows:<BR>1. Immersion in any solution greatly damaged the surface of set gypsums, and surface roughness increased.2. It was suggested that immersion in solution for a considerably long time makes the surface rougher, because there was no significant difference between immersing in disinfectant solution and in water which wasused as a control.<BR>3. SEM views showed that gypsum crystals which were grown on an acrylic plate were washed away, and gypsum crystal projections were created. Gypsum crystal on part of the surface of the set gypsum, which was immersed in glutaraldehyde and formaldehyde, was destroyed.

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