Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (25): 4609-4615.doi: 10.3969/j.issn.2095-4344.2013.25.007

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Properties of nanometer silver antibacterial agent and tetrapod-like zinc oxide antibacterial agent against Candida albicans 

Xiao Yue, Kang Liang, Lü Qing, Yu Bo-wen, Ma Ying-jun   

  1. Stomatology Hospital, Jiamusi University, Jiamusi  154002, Heilongjiang Province, China
  • Received:2013-01-06 Revised:2013-01-22 Online:2013-06-18 Published:2013-06-18
  • Contact: Ma Ying-jun, Associate chief nurse, Stomatology Hospital, Jiamusi University, Jiamusi 154002, Heilongjiang Province, China
  • About author:Xiao Yue, Chief physician, Professor, Stomatology Hospital, Jiamusi University, Jiamusi 154002, Heilongjiang Province, China kangliang008@sina.com

Abstract:

BACKGROUND: Surface structure of room temperature curing methyl methacrylate is loose and porous, easy to be attached to a variety of bacteria, microbes, leading to the occurrence of denture stomatitis. Thus, antibacterial agent added in methyl methacrylate has been a hot focus in the study.
OBJECTIVE: To compare the antibacterial activity of room temperature curing methyl methacrylate against Candida albicans after addition of the nanometer silver antibacterial agent and tetrapod-like zinc oxide antibacterial agent.
METHODS: Minimum bactericidal concentration of nanometer silver antibacterial agent and tetrapod-like zinc oxide antibacterial agents against Candida albicans was determined by dilution method. The nanometer silver antibacterial agent loaded nanometer zirconium phosphate or tetrapod-like zinc oxide antibacterial agent with 0%, 1%, 2%, 3% mass fraction were added to the room temperature curing methyl methacrylate to detect the antibacterial property against Candida albicans.
RESULTS AND CONCLUSION: The minimum bactericidal concentration of nanometer silver antibacterial agent was 40 g/L. The minimum bactericidal concentration of tetrapod-like zinc oxide agent against Candida albicans was 25 g/L. Methyl methacrylate without addition of nanometer silver antibacterial agent or tetrapod-like zinc oxide antibacterial agent did not have antibacterial activity, and the antibacterial activity significantly increased after addition of the two antibacterial agents. With the increased mass fraction of nanometer silver antibacterial agent or tetrapod-like zinc oxide antibacterial agent, the antibacterial properties of room temperature curing methyl methacrylate increased gradually. At 3% mass fraction, antibacterial rate of methyl methacrylate with nanometer silver antibacterial agent was 92.23%, and the antibacterial rate of methyl methacrylate with the tetrapod-like zinc oxide antibacterial agent was 98.23%. These results indicated that the nanometer silver antibacterial agent and tetrapod-like zinc oxide antibacterial agent have antibacterial effects against Candida albicans, and the tetrapod-like zinc oxide antibacterial agent has a good antibacterial effect compared with the nanometer silver antibacterial agent.

Key words: biomaterials, tissue-engineered oral materials, methyl methacrylate, nanometer silver, tetrapod-like, zinc oxide, Candida albicans, antibacterial agent, minimum bactericidal concentration

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