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은 나노 입자가 도핑된 실리카 함유 치과용 레진의 가시광선 조사에 따른 항균성

Other Titles
 Antibacterial properties of dental resin incorporated with nano-silver doped silica in accordance with exposure of visible light 
Authors
 이민용  ;  윤희원  ;  김광만  ;  권재성 
Citation
 Korean Journal of Dental Materials(대한치과재료학회지), Vol.49(4) : 161-172, 2022-12 
Journal Title
Korean Journal of Dental Materials(대한치과재료학회지)
ISSN
 2384-4434 
Issue Date
2022-12
Keywords
Silver ; Silica ; Reactive oxygen species ; Visible light ; Band gap ; Antibacterial
Abstract
This study investigated reduction of the bandgap of silica by applying nano-silver doping technique and possible application of such silica as a filler in dental resin. Due to reduce band gap, newly fabricated nano-silver doped silica was able to release ROS in accordance with exposure of visible light. Nano-silver doped silica was composed of below 20 nm size crystal silver nanoparticle and 100~500 nm size amorphous silica. These two components were chemically attached to each other (Si-O-Ag). The reduced bandgap was 2.10 eV, which the value could be interpreted as occurrence of surface plasmon resonance generating ROS in visible light exposure conditions. When such nano-silver doped silica was used as a filler in dental resin, increased antibacterial property of nano-silver ion was observed which was related to releasing of ROS when exposed in visible light. The antibacterial properties were statistically significant following exposure to visible light when 0.7 to 1.5 wt% of nano-silver doped silica were incorporated into resin. When the contents of nano-silver doped silica were below 0.7 wt%, minimal ROS release resulted in no significant increase in antibacterial properties as there would be less exposed nano-silver doped silica on the resin surface by visible light. Meanwhile, more than 1.5 wt% of nano-silver doped silica also resulted no significant increase in antibacterial properties following exposure to visible light as the antibacterial effects from nano-silver ion itself were greater than effects from released ROS. Hence, it was concluded that dental resin containing 0.7 to 1.5 wt% of nano-silver doped silica would provide antibacterial properties when exposed to visible light, significantly greater than in dark conditions.
Files in This Item:
T9992022955.pdf Download
DOI
10.14815/kjdm.2022.49.4.161
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Jae-Sung(권재성) ORCID logo https://orcid.org/0000-0001-9803-7730
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/193989
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