[Study of adherence of normal oral bacteria on polymethyl methyacrylate containing silver-supported silicate inorganic antibacteria].
OBJECTIVE
To study the oral normal bacteria adherence on polymethyl methyacrylate (PMMA) containing silver-supported silicate inorganic antibacterial, and the growth inhibitory concentration of silver-supported silicate inorganic antibacterial to normal oral bacteria were also investigated.


METHODS
A certain volume of normal oral bacteria was inoculated on the RHI plate containing different dilution of silver-supported silicate inorganic antibacterial, then the growth of the bacteria was investigated by light microscope and biochemical methods; the oral bacteria plaque model in vitro was used to evaluate the adherence of 4 species normal oral bacteria mixture on the surface of PMMA which containing silver-supported silicate inorganic antibacterial in the proportion of 5% or 10%.


RESULTS
The growth of normal oral bacteria was inhibited effectively by silver-supported silicate inorganic antibacterial within the concentration of 8%, and the growth of Porphyromonas gingivalis and Conclida albicans were inhibited at concentration from 1.25% to 2.50%, but the PMMA containing silver-supported inorganic antibacterial could not prevent the adherence of bacteria within a period of 16 days.


CONCLUSIONS
Silver-supported silicate inorganic antibacterial has effectiveness on inhibiting the growth of normal oral bacteria, but could not prevent the adherence of oral normal bacteria mixture.
Li
Gang
G
Dept. of Stomatology, Kunming Medical College, Kunming 610093, China.
Chen
Zhi-Qing
ZQ
Wu
Xing-Hui
XH
Xiao
Xiao-Rong
XR
Li
Yan-Hong
YH
Zhu
Zhu
Z
D000900:Anti-Bacterial Agents; D001419:Bacteria; D003773:Dental Plaque; D017640:Silicates; D012834:Silver
D000900:Anti-Bacterial Agents; D017640:Silicates; D012834:Silver