Journal of Korean society of Dental Hygiene (한국치위생학회지)

Korean Society of Dental Hygiene (한국치위생학회)
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Effect of non-thermal atmospheric pressure nitrogen and air plasma on the surface properties and the disinfection of denture base resin

상온대기압 질소 및 공기 플라즈마가 의치상용 레진의 표면 특성과 살균효과에 미치는 영향

  • Seo, Hye-Yeon (Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Yonsei University) ;
  • Yoo, Eun-Mi (Department of Dental Hygiene, Shingu College) ;
  • Choi, Yu-Ri (Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Yonsei University) ;
  • Kim, Soo-Hwa (Department of Dental Hygiene, Hanyang Women’s University) ;
  • Kim, Kwang-Mahn (Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Yonsei University) ;
  • Kim, Kyoung-Nam (Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Yonsei University)
  • 서혜연 (연세대학교 치과대학 치과생체재료공학교실 및 연구소) ;
  • 유은미 (신구대학교 치위생과) ;
  • 최유리 (연세대학교 치과대학 치과생체재료공학교실 및 연구소) ;
  • 김수화 (한양여자대학교 치위생과) ;
  • 김광만 (연세대학교 치과대학 치과생체재료공학교실 및 연구소) ;
  • 김경남 (연세대학교 치과대학 치과생체재료공학교실 및 연구소)
  • Received : 2014.07.25
  • Accepted : 2014.09.25
  • Published : 2014.10.30
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Abstract

Objectives : The purpose of this study was to investigate the effect of non-thermal atmospheric pressure plasma jet(NTAPPJ) on surface properties and Streptococcus mutans disinfection of denture base resin. Methods : Self-cured denture base resin (Jet denture repair resin, Lang dental Mfg, co., USA) was used to make specimen($12mm{\times}2mm$). To observe surface change before and after plasma process, surface roughness and contact angle were measured. For sterilization experiments, the surfaces of specimens were treated with nitrogen and air NTAPPJ for 1 minute after S. mutans was inoculated on the material surfaces. Results : Before plasma process, surface roughness of denture base resin was $0.21{\mu}m{\pm}0.02{\mu}m$. After air and nitrogen NTAPPJ process, surface roughness was $0.19{\mu}m{\pm}0.03{\mu}m$ and $0.18{\mu}m{\pm}0.01{\mu}m$ respectively. There was no significant difference(p>0.05). Contact angle of control group without plasma process was $83.81^{\circ}{\pm}3.14^{\circ}$, while after plasma treatment, contact angles of air NTAPPJ and nitrogen NTAPPJ groups were $63.29^{\circ}{\pm}2.27^{\circ}$ and $46.68^{\circ}{\pm}5.82^{\circ}$ respectively. The result showed a significant decrease in contact angle after plasma process(p<0.05). Compared to the control group 6020.33(CFU/mL) without plasma process, CFU decreased significantly after air NTAPPJ 90.75(CFU/mL) and nitrogen NTAPPJ 80.25(CFU/mL) treatment(p<0.05). Conclusions : It was considered that NTAPPJ can be used for denture disinfection without changing surface properties of materials.

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References

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