Antimicrobial Effect of Titanium Hydroxyapatite in Denture Base Resin

被引：4
作者：
Sato, Wataru [1 ]
Yoshida, Yasuo [2 ]
Komasa, Satoshi [1 ]
Hasegawa, Yoshiaki [2 ]
Okazaki, Joji [1 ]
机构：
[1] Osaka Dent Univ, Dept Removable Prosthodont & Occlus, Hirakata, Osaka 5731144, Japan
[2] Aichi Gakuin Univ, Sch Dent, Dept Microbiol, Nagoya, Aichi 4648650, Japan
来源：
APPLIED SCIENCES-BASEL | 2018年 / 8卷 / 06期
基金：
日本学术振兴会;
关键词：
titanium hydroxyapatite; photocatalyst; bacterial biofilms; antimicrobial effect; denture; ACRYLIC RESIN; IN-VITRO; STOMATITIS; SALIVA; VIVO;
D O I：
10.3390/app8060963
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In the current study, we investigated the antimicrobial effect of titanium hydroxyapatite (TiHA), a photo-oxidizing organic material, in denture base resin on single-species biofilms formed by laboratory bacteria and on multispecies biofilms formed by bacteria from the human saliva. Although TiHA reportedly restricts the growth of planktonic bacteria upon ultraviolet A (UVA) irradiation, the antimicrobial effect of TiHA on bacterial biofilms remains to be elucidated. Resin specimens were prepared by adding TiHA to polymethyl methacrylate-based, denture base resin. The specimens were incubated with biofilm-forming Streptococcus sanguinis, Actinomyces naeslundii, Staphylococcus aureus, Escherichia coli, or bacteria from the human saliva obtained from volunteers. After UVA irradiation, the colony-forming units (CFUs) from the biofilms formed on the specimens were determined. CFU numbers for S. sanguinis, A. naeslundii, and S. aureus that formed biofilms on TiHA-containing specimens were significantly lower than those formed on specimens without TiHA. TiHA did not reduce the CFUs of biofilm-forming E. coli. In all cases, CFU numbers in the biofilms formed on TiHA-containing specimens by the salivary bacteria were significantly reduced. In addition, neither a 56 h UVA irradiation nor a 28 d soaking in water diminished the antibacterial effect of TiHA. TiHA in denture base resin exerts an antimicrobial effect on single-species bacterial biofilms and biofilms formed by a wide variety of bacteria from human saliva.
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页数：12
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