The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Characterization of tissue conditioner containing chitosan-doped silver nanoparticles

키토산-은나노 복합체가 함유된 의치 연성이장재 특성에 관한 연구

  • Nam, Ki Young (Department of Dentistry, College of Medicine, Keimyung University) ;
  • Lee, Chul Jae (Division of Cosmetics Chemistry, Yeungnam College of Science & Technology)
  • 남기영 (계명대학교 의과대학 치과학교실 및 계명대학교 동산병원 치과) ;
  • 이철재 (영남이공대학교 화장품화공계열)
  • Received : 2020.02.03
  • Accepted : 2020.09.11
  • Published : 2020.10.30
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Abstract

Purpose: Development of a latent antimicrobial soft liner is strongly needed to overcome a possible inflammation related with its dimensional degrade or surface roughness. Modified tissue conditioner (TC) containing chitosan-doped silver nanoparticles (ChSN) complexes were synthesized and assessed for their characterizations. Materials and methods: ChSN were preliminarily synthesized from silver nitrate (AgNO3), sodium borohydride (NaBH4) as a reducing agent and chitosan biopolymer as a capping agent. Ultraviolet-visible and Fourier transform infrared spectroscopy were conducted to confirm the stable reduction of nanoparticles with chitosan. Modified TC blended with ChSN by 0 (control), 1.0, 3.0 and 5.0 % mass fraction were mechanically tested by ultimate tensile strength (UTS), silver ion elution and color stability (n=7). Results: At 24 hour and 7 day storage periods, UTS values were not significant (P>.05) as compared with pristine TC (control) and silver ion was detected with the dose-dependent values of ChSN incorporated. Color stability of TC were influenced by ChSN add, with the higher doses, the significantly greater color changes (P<.05). Conclusion: A stable synthesized ChSN was acquired and modified TC loading ChSN was characterized as silver ion releasing without detrimental physical property. For its clinical application, antimicrobial test, color control and multifactor investigations are still required.

목적: 의치 연성이장재 적용기간 경과에 따른 물성저하 및 표면거침성이 의치구내염 발생을 야기할 수 있으며 이 논문의 목적은 항균물질인 키토산-은나노 복합체를 환원법으로 합성하고 이것을 연성이장재에 투여 후 그 특성을 평가하는 것이다. 재료 및 방법: 질산은과 키토산 분말로 혼합 정제된 키토산-은나노 복합체를 자외선 가시광선 및 적외선 분광법으로 분석하고 연성이장재 분말에 각각 0(대조군), 1.0, 3.0 및 5.0의 질량 분율로 첨가 후 단량체 용액과 각각 중합하였다. 항균복합체가 첨가된 연성이장재 시편의 특성은 중합완료 24 시간과 7 일 후 미세인장강도, 은 이온 용출 그리고 색조변화 등을 통하여 각각 평가하였다. 결과: 분광분석을 통하여 안정적인 키토산-은나노 복합체의 합성을 확인하였다. 대조군과 비교 시 복합체첨가에 따른 연성이장재의 유의한 인장강도 변화는 나타내지 않았고 (P > .05) 은 이온 용출은 복합체 투여량에 대하여 농도비례적으로 측정되었으며 색조변화량 또한 농도비례적으로 증가되었다 (P < .05). 결론: 키토산-은나노 복합체가 투여된 연성이장재는 적절한 물성과 은 이온 용출 특성을 가진 보철생체재료의 가능성을 도출하였고 임상 적용을 위한 항균실험 및 색조 안정성 등의 연구들이 추후 필요할 것으로 사료된다.

Keywords

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